diff options
Diffstat (limited to 'src/3rdparty')
29 files changed, 0 insertions, 8594 deletions
diff --git a/src/3rdparty/clip2tri/CMakeLists.txt b/src/3rdparty/clip2tri/CMakeLists.txt deleted file mode 100644 index 9b5a56b3..00000000 --- a/src/3rdparty/clip2tri/CMakeLists.txt +++ /dev/null @@ -1,31 +0,0 @@ -# Generated from clip2tri.pro. - -##################################################################### -## Bundled_Clip2Tri Generic Library: -##################################################################### - -qt_internal_add_3rdparty_library(Bundled_Clip2Tri - QMAKE_LIB_NAME _clip2tri - STATIC - SKIP_AUTOMOC # special case - EXCEPTIONS - SOURCES - clip2tri.cpp clip2tri.h - INCLUDE_DIRECTORIES - ../clipper - ../poly2tri - LIBRARIES - Qt::Bundled_Clipper # special case - Qt::Bundled_Poly2Tri # special case -) -qt_disable_warnings(Bundled_Clip2Tri) -qt_set_symbol_visibility_hidden(Bundled_Clip2Tri) - -## Scopes: -##################################################################### - -#### Keys ignored in scope 3:.:.:clip2tri.pro:GCC: -# QMAKE_CFLAGS_OPTIMIZE_FULL = "-ffast-math" - -#### Keys ignored in scope 4:.:.:clip2tri.pro:NOT CLANG AND NOT ICC AND NOT rim_qcc: -# QMAKE_CXXFLAGS_WARN_ON = "-Wno-error=return-type" diff --git a/src/3rdparty/clip2tri/LICENSE b/src/3rdparty/clip2tri/LICENSE deleted file mode 100644 index 9d99b888..00000000 --- a/src/3rdparty/clip2tri/LICENSE +++ /dev/null @@ -1,21 +0,0 @@ -The MIT License (MIT) - -Copyright (c) 2014 Bitfighter developers - -Permission is hereby granted, free of charge, to any person obtaining a copy -of this software and associated documentation files (the "Software"), to deal -in the Software without restriction, including without limitation the rights -to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -copies of the Software, and to permit persons to whom the Software is -furnished to do so, subject to the following conditions: - -The above copyright notice and this permission notice shall be included in all -copies or substantial portions of the Software. - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE -SOFTWARE. diff --git a/src/3rdparty/clip2tri/clip2tri.cpp b/src/3rdparty/clip2tri/clip2tri.cpp deleted file mode 100644 index db4911c1..00000000 --- a/src/3rdparty/clip2tri/clip2tri.cpp +++ /dev/null @@ -1,406 +0,0 @@ -/* - * Authors: kaen, raptor, sam686, watusimoto - * - * Originally from the bitfighter source code - * - * The MIT License (MIT) - * - * Copyright (c) 2014 Bitfighter developers - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in all - * copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#include "clip2tri.h" -#include <poly2tri.h> - -#include <cstdio> - -static const double clipperScaleFactor = 1073741822.0; -static const double clipperScaleFactorInv = 1.0 / 1073741822.0; - -using namespace p2t; - -namespace c2t -{ - - -static const F32 CLIPPER_SCALE_FACT = 1000.0f; -static const F32 CLIPPER_SCALE_FACT_INVERSE = 0.001f; - -///////////////////////////////// - -Point::Point() -{ - x = 0; - y = 0; -} - -Point::Point(const Point& pt) -{ - x = pt.x; - y = pt.y; -} - - -///////////////////////////////// - -clip2tri::clip2tri() : openSubject(false) -{ - // Do nothing! -} - -clip2tri::~clip2tri() -{ - // Do nothing! -} - - -void clip2tri::triangulate(const vector<vector<Point> > &inputPolygons, vector<Point> &outputTriangles, - const vector<Point> &boundingPolygon) -{ - // Use clipper to clean. This upscales the floating point input - PolyTree solution; - mergePolysToPolyTree(inputPolygons, solution); - - Path bounds = upscaleClipperPoints(boundingPolygon); - - // This will downscale the Clipper output and use poly2tri to triangulate - triangulateComplex(outputTriangles, bounds, solution); -} - -void clip2tri::addClipPolygon(const Path &path) -{ - try // prevent any exception to spill into Qt - { - clipper.AddPath(path, ptClip, true); - } - catch(QtClipperLib::clipperException &e) - { - printf("addClipPolygon: %s\n", e.what()); - } -} - -void clip2tri::addSubjectPath(const Path &path, bool closed) -{ - try // prevent any exception to spill into Qt - { - clipper.AddPath(path, ptSubject, closed); - } - catch(QtClipperLib::clipperException &e) - { - printf("addSubjectPath: %s\n", e.what()); - return; - } - if (!closed) - openSubject = true; -} - -void clip2tri::clearClipper() -{ - // clear doesn't throw - clipper.Clear(); - openSubject = false; -} - -static QtClipperLib::ClipType operation(const clip2tri::Operation &op) -{ - switch (op) { - case clip2tri::Intersection: - return QtClipperLib::ctIntersection; - case clip2tri::Union: - return QtClipperLib::ctUnion; - case clip2tri::Difference: - return QtClipperLib::ctDifference; - case clip2tri::Xor: - return QtClipperLib::ctXor; - } - return ctIntersection; -} - -static std::string operationName(const clip2tri::Operation &op) -{ - switch (op) { - case clip2tri::Intersection: - return std::string("Intersection"); - case clip2tri::Union: - return std::string("Union"); - case clip2tri::Difference: - return std::string("Difference"); - case clip2tri::Xor: - return std::string("Xor"); - } - return std::string("Intersection"); -} - -Paths clip2tri::execute(const clip2tri::Operation op, const PolyFillType subjFillType, const PolyFillType clipFillType) -{ - Paths solution; - try // prevent any exception from spilling into Qt - { - if (!openSubject) { - clipper.Execute(operation(op), solution, subjFillType, clipFillType); - } else { - PolyTree res; - clipper.Execute(operation(op), res, subjFillType, clipFillType); - PolyNode *n = res.GetFirst(); - if (n) { - solution.push_back(n->Contour); - while ((n = n->GetNext())) - solution.push_back(n->Contour); - } - } - } - catch(QtClipperLib::clipperException &e) - { - printf("executing %s: %s\n", operationName(op).c_str(), e.what()); - } - return solution; -} - -int clip2tri::pointInPolygon(const IntPoint &pt, const Path &path) -{ - return PointInPolygon(pt, path); -} - -Path clip2tri::upscaleClipperPoints(const vector<Point> &inputPolygon) -{ - Path outputPolygon; - outputPolygon.resize(inputPolygon.size()); - - for(S32 i = 0; i < inputPolygon.size(); i++) - outputPolygon[i] = IntPoint(S64(inputPolygon[i].x * CLIPPER_SCALE_FACT), S64(inputPolygon[i].y * CLIPPER_SCALE_FACT)); - - return outputPolygon; -} - - -Paths clip2tri::upscaleClipperPoints(const vector<vector<Point> > &inputPolygons) -{ - Paths outputPolygons; - - outputPolygons.resize(inputPolygons.size()); - - for(S32 i = 0; i < inputPolygons.size(); i++) - { - outputPolygons[i].resize(inputPolygons[i].size()); - - for(S32 j = 0; j < inputPolygons[i].size(); j++) - outputPolygons[i][j] = IntPoint(S64(inputPolygons[i][j].x * CLIPPER_SCALE_FACT), S64(inputPolygons[i][j].y * CLIPPER_SCALE_FACT)); - } - - return outputPolygons; -} - - -vector<vector<Point> > clip2tri::downscaleClipperPoints(const Paths &inputPolygons) -{ - vector<vector<Point> > outputPolygons; - - outputPolygons.resize(inputPolygons.size()); - - for(U32 i = 0; i < inputPolygons.size(); i++) - { - outputPolygons[i].resize(inputPolygons[i].size()); - - for(U32 j = 0; j < inputPolygons[i].size(); j++) - outputPolygons[i][j] = Point(F32(inputPolygons[i][j].X) * CLIPPER_SCALE_FACT_INVERSE, F32(inputPolygons[i][j].Y) * CLIPPER_SCALE_FACT_INVERSE); - } - - return outputPolygons; -} - - -// Use Clipper to merge inputPolygons, placing the result in a Polytree -// NOTE: this does NOT downscale the Clipper points. You must do this afterwards -// -// Here you add all your non-navigatable objects (e.g. walls, barriers, etc.) -bool clip2tri::mergePolysToPolyTree(const vector<vector<Point> > &inputPolygons, PolyTree &solution) -{ - Paths input = upscaleClipperPoints(inputPolygons); - - // Fire up clipper and union! - Clipper clipper; - clipper.StrictlySimple(true); - - try // there is a "throw" in AddPolygon - { - clipper.AddPaths(input, ptSubject, true); - } - catch(QtClipperLib::clipperException &e) - { - printf("mergePolysToPolyTree: %s\n", e.what()); - } - - return clipper.Execute(ctUnion, solution, pftNonZero, pftNonZero); -} - - -// Delete all poly2tri points from a vector and clear the vector -static void deleteAndClear(vector<p2t::Point*> &vec) -{ - for(U32 i = 0; i < vec.size(); i++) - delete vec[i]; - - vec.clear(); -} - - -// Shrink large polygons by reducing each coordinate by 1 in the -// general direction of the last point as we wind around -// -// This normally wouldn't work in every case, but our upscaled-by-1000 polygons -// have little chance to create new duplicate points with this method. -// -// For information on why this was needed, see: -// -// https://code.google.com/p/poly2tri/issues/detail?id=90 -// -static void edgeShrink(Path &path) -{ - U32 prev = path.size() - 1; - for(U32 i = 0; i < path.size(); i++) - { - // Adjust coordinate by 1 depending on the direction - path[i].X - path[prev].X > 0 ? path[i].X-- : path[i].X++; - path[i].Y - path[prev].Y > 0 ? path[i].Y-- : path[i].Y++; - - prev = i; - } -} - - -// This uses poly2tri to triangulate. poly2tri isn't very robust so clipper needs to do -// the cleaning of points before getting here. -// -// A tree structure of polygons is required for doing complex polygons-within-polygons. -// For reference discussion on how this started to be developed, see here: -// -// https://code.google.com/p/poly2tri/issues/detail?id=74 -// -// For assistance with a special case crash, see this utility: -// http://javascript.poly2tri.googlecode.com/hg/index.html -// -// FIXME: what is ignoreFills and ignoreHoles for? kaen? -bool clip2tri::triangulateComplex(vector<Point> &outputTriangles, const Path &outline, - const PolyTree &polyTree, bool ignoreFills, bool ignoreHoles) -{ - // Keep track of memory for all the poly2tri objects we create - vector<p2t::CDT*> cdtRegistry; - vector<vector<p2t::Point*> > holesRegistry; - vector<vector<p2t::Point*> > polylinesRegistry; - - - // Let's be tricky and add our outline to the root node (it should have none), it'll be - // our first Clipper hole - PolyNode *rootNode = NULL; - - PolyNode tempNode; - if(polyTree.Total() == 0) // Polytree is empty with no root node, e.g. on an empty level - rootNode = &tempNode; - else - rootNode = polyTree.GetFirst()->Parent; - - rootNode->Contour = outline; - - // Now traverse our polyline nodes and triangulate them with only their children holes - PolyNode *currentNode = rootNode; - while(currentNode != NULL) - { - // A Clipper hole is actually what we want to build zones for; they become our bounding - // polylines. poly2tri holes are therefore the inverse - if((!ignoreHoles && currentNode->IsHole()) || - (!ignoreFills && !currentNode->IsHole())) - { - // Build up this polyline in poly2tri's format (downscale Clipper points) - vector<p2t::Point*> polyline; - for(U32 j = 0; j < currentNode->Contour.size(); j++) - polyline.push_back(new p2t::Point(F64(currentNode->Contour[j].X), F64(currentNode->Contour[j].Y))); - - polylinesRegistry.push_back(polyline); // Memory - - // Set our polyline in poly2tri - p2t::CDT* cdt = new p2t::CDT(polyline); - cdtRegistry.push_back(cdt); - - for(U32 j = 0; j < currentNode->Childs.size(); j++) - { - PolyNode *childNode = currentNode->Childs[j]; - - // Slightly modify the polygon to guarantee no duplicate points - edgeShrink(childNode->Contour); - - vector<p2t::Point*> hole; - for(U32 k = 0; k < childNode->Contour.size(); k++) - hole.push_back(new p2t::Point(F64(childNode->Contour[k].X), F64(childNode->Contour[k].Y))); - - holesRegistry.push_back(hole); // Memory - - // Add the holes for this polyline - cdt->AddHole(hole); - } - - cdt->Triangulate(); - - // Add current output triangles to our total - vector<p2t::Triangle*> currentOutput = cdt->GetTriangles(); - - // Copy our data to TNL::Point and to our output Vector - p2t::Triangle *currentTriangle; - for(U32 j = 0; j < currentOutput.size(); j++) - { - currentTriangle = currentOutput[j]; - outputTriangles.push_back(Point(currentTriangle->GetPoint(0)->x * CLIPPER_SCALE_FACT_INVERSE, currentTriangle->GetPoint(0)->y * CLIPPER_SCALE_FACT_INVERSE)); - outputTriangles.push_back(Point(currentTriangle->GetPoint(1)->x * CLIPPER_SCALE_FACT_INVERSE, currentTriangle->GetPoint(1)->y * CLIPPER_SCALE_FACT_INVERSE)); - outputTriangles.push_back(Point(currentTriangle->GetPoint(2)->x * CLIPPER_SCALE_FACT_INVERSE, currentTriangle->GetPoint(2)->y * CLIPPER_SCALE_FACT_INVERSE)); - } - } - - currentNode = currentNode->GetNext(); - } - - - // Clean up memory used with poly2tri - // - // Clean-up workers - for(S32 i = 0; i < cdtRegistry.size(); i++) - delete cdtRegistry[i]; - - // Free the polylines - for(S32 i = 0; i < polylinesRegistry.size(); i++) - { - vector<p2t::Point*> polyline = polylinesRegistry[i]; - deleteAndClear(polyline); - } - - // Free the holes - for(S32 i = 0; i < holesRegistry.size(); i++) - { - vector<p2t::Point*> hole = holesRegistry[i]; - deleteAndClear(hole); - } - - // Make sure we have output data - if(outputTriangles.size() == 0) - return false; - - return true; -} - - -} /* namespace c2t */ diff --git a/src/3rdparty/clip2tri/clip2tri.h b/src/3rdparty/clip2tri/clip2tri.h deleted file mode 100644 index 3848d009..00000000 --- a/src/3rdparty/clip2tri/clip2tri.h +++ /dev/null @@ -1,102 +0,0 @@ -/* - * Authors: kaen, raptor, sam686, watusimoto - * - * Originally from the bitfighter source code - * - * The MIT License (MIT) - * - * Copyright (c) 2014 Bitfighter developers - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in all - * copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. - */ - -#ifndef CLIP2TRI_H_ -#define CLIP2TRI_H_ - -#include <vector> -#include <clipper.h> - -using namespace std; -using namespace QtClipperLib; - -namespace c2t -{ - -typedef signed int S32; -typedef signed long long S64; -typedef unsigned int U32; -typedef float F32; -typedef double F64; - - -struct Point -{ - F32 x; - F32 y; - - Point(); - Point(const Point &pt); - - template<class T, class U> - Point(T in_x, U in_y) { x = static_cast<F32>(in_x); y = static_cast<F32>(in_y); } -}; - -class clip2tri -{ -private: - // - Path upscaleClipperPoints(const vector<Point> &inputPolygon); - - // These operate on a vector of polygons - Paths upscaleClipperPoints(const vector<vector<Point> > &inputPolygons); - vector<vector<Point> > downscaleClipperPoints(const Paths &inputPolygons); - - bool mergePolysToPolyTree(const vector<vector<Point> > &inputPolygons, PolyTree &solution); - - bool triangulateComplex(vector<Point> &outputTriangles, const Path &outline, - const PolyTree &polyTree, bool ignoreFills = true, bool ignoreHoles = false); - -public: - enum Operation { Union, Intersection, Difference, Xor }; - clip2tri(); - virtual ~clip2tri(); - - void triangulate(const vector<vector<Point> > &inputPolygons, vector<Point> &outputTriangles, - const vector<Point> &boundingPolygon); - - // Clip polygons are intended as closed, even if the first and last vertex aren't the same. - void addClipPolygon(const Path &path); - // Closed means the path has to be effectively closed. Meaning path[0] == path[path.size()-1] - void addSubjectPath(const Path &path, bool closed); - - void clearClipper(); - - Paths execute(const Operation op, - const PolyFillType subjFillType = pftNonZero, - const PolyFillType clipFillType = pftNonZero); - - static int pointInPolygon(const IntPoint &pt, const Path &path); - - Clipper clipper; - bool openSubject; -}; - -} /* namespace c2t */ - -#endif /* CLIP2TRI_H_ */ diff --git a/src/3rdparty/clip2tri/clip2tri.pro b/src/3rdparty/clip2tri/clip2tri.pro deleted file mode 100644 index 4059a63a..00000000 --- a/src/3rdparty/clip2tri/clip2tri.pro +++ /dev/null @@ -1,22 +0,0 @@ -TARGET = qt_clip2tri - -CONFIG += staticlib exceptions warn_off optimize_full - -INCLUDEPATH += ../poly2tri -INCLUDEPATH += ../clipper - -load(qt_helper_lib) - -# workaround for QTBUG-31586 -contains(QT_CONFIG, c++11): CONFIG += c++11 - -gcc { - QMAKE_CFLAGS_OPTIMIZE_FULL += -ffast-math - !clang:!intel_icc:!rim_qcc: QMAKE_CXXFLAGS_WARN_ON += -Wno-error=return-type -} - -HEADERS += clip2tri.h -SOURCES += clip2tri.cpp - -LIBS_PRIVATE += -L$$MODULE_BASE_OUTDIR/lib -lqt_poly2tri$$qtPlatformTargetSuffix() -lqt_clipper$$qtPlatformTargetSuffix() - diff --git a/src/3rdparty/clip2tri/qt_attribution.json b/src/3rdparty/clip2tri/qt_attribution.json deleted file mode 100644 index a4a1f183..00000000 --- a/src/3rdparty/clip2tri/qt_attribution.json +++ /dev/null @@ -1,13 +0,0 @@ -{ - "Id": "clip2tri", - "Name": "Clip2Tri Polygon Triangulation Library", - "QDocModule": "qtpositioning", - "QtUsage": "Used in the QML plugin of Qt Location and in Qt Positioning.", - - "Description": "Clip2Tri can be used together with Clipper for robust triangulation.", - "Homepage": "https://github.com/raptor/clip2tri", - "LicenseId": "MIT", - "License": "MIT License", - "LicenseFile": "LICENSE", - "Copyright": "Copyright (c) 2014 Bitfighter developers" -} diff --git a/src/3rdparty/clipper/CMakeLists.txt b/src/3rdparty/clipper/CMakeLists.txt deleted file mode 100644 index 08f2fada..00000000 --- a/src/3rdparty/clipper/CMakeLists.txt +++ /dev/null @@ -1,25 +0,0 @@ -# Generated from clipper.pro. - -##################################################################### -## Bundled_Clipper Generic Library: -##################################################################### - -qt_internal_add_3rdparty_library(Bundled_Clipper - QMAKE_LIB_NAME _clipper - STATIC - SKIP_AUTOMOC # special case - EXCEPTIONS - SOURCES - clipper.cpp clipper.h -) -qt_disable_warnings(Bundled_Clipper) -qt_set_symbol_visibility_hidden(Bundled_Clipper) - -## Scopes: -##################################################################### - -#### Keys ignored in scope 3:.:.:clipper.pro:GCC: -# QMAKE_CFLAGS_OPTIMIZE_FULL = "-ffast-math" - -#### Keys ignored in scope 4:.:.:clipper.pro:NOT CLANG AND NOT ICC AND NOT rim_qcc: -# QMAKE_CXXFLAGS_WARN_ON = "-Wno-error=return-type" diff --git a/src/3rdparty/clipper/LICENSE b/src/3rdparty/clipper/LICENSE deleted file mode 100644 index 2213e374..00000000 --- a/src/3rdparty/clipper/LICENSE +++ /dev/null @@ -1,48 +0,0 @@ -Use, modification & distribution is subject to Boost Software License Ver 1. -http://www.boost.org/LICENSE_1_0.txt - -Attributions: -The code in this library is an extension of Bala Vatti's clipping algorithm: -"A generic solution to polygon clipping" -Communications of the ACM, Vol 35, Issue 7 (July 1992) pp 56-63. -http://portal.acm.org/citation.cfm?id=129906 - -Computer graphics and geometric modeling: implementation and algorithms -By Max K. Agoston -Springer; 1 edition (January 4, 2005) -http://books.google.com/books?q=vatti+clipping+agoston - -See also: -"Polygon Offsetting by Computing Winding Numbers" -Paper no. DETC2005-85513 pp. 565-575 -ASME 2005 International Design Engineering Technical Conferences -and Computers and Information in Engineering Conference (IDETC/CIE2005) -September 24-28, 2005 , Long Beach, California, USA -http://www.me.berkeley.edu/~mcmains/pubs/DAC05OffsetPolygon.pdf - - - -Boost Software License - Version 1.0 - August 17th, 2003 -http://www.boost.org/LICENSE_1_0.txt - -Permission is hereby granted, free of charge, to any person or organization -obtaining a copy of the software and accompanying documentation covered by -this license (the "Software") to use, reproduce, display, distribute, -execute, and transmit the Software, and to prepare derivative works of the -Software, and to permit third-parties to whom the Software is furnished to -do so, all subject to the following: - -The copyright notices in the Software and this entire statement, including -the above license grant, this restriction and the following disclaimer, -must be included in all copies of the Software, in whole or in part, and -all derivative works of the Software, unless such copies or derivative -works are solely in the form of machine-executable object code generated by -a source language processor. - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT -SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE -FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE, -ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER -DEALINGS IN THE SOFTWARE. diff --git a/src/3rdparty/clipper/clipper.cpp b/src/3rdparty/clipper/clipper.cpp deleted file mode 100644 index d9735649..00000000 --- a/src/3rdparty/clipper/clipper.cpp +++ /dev/null @@ -1,4629 +0,0 @@ -/******************************************************************************* -* * -* Author : Angus Johnson * -* Version : 6.4.2 * -* Date : 27 February 2017 * -* Website : http://www.angusj.com * -* Copyright : Angus Johnson 2010-2017 * -* * -* License: * -* Use, modification & distribution is subject to Boost Software License Ver 1. * -* http://www.boost.org/LICENSE_1_0.txt * -* * -* Attributions: * -* The code in this library is an extension of Bala Vatti's clipping algorithm: * -* "A generic solution to polygon clipping" * -* Communications of the ACM, Vol 35, Issue 7 (July 1992) pp 56-63. * -* http://portal.acm.org/citation.cfm?id=129906 * -* * -* Computer graphics and geometric modeling: implementation and algorithms * -* By Max K. Agoston * -* Springer; 1 edition (January 4, 2005) * -* http://books.google.com/books?q=vatti+clipping+agoston * -* * -* See also: * -* "Polygon Offsetting by Computing Winding Numbers" * -* Paper no. DETC2005-85513 pp. 565-575 * -* ASME 2005 International Design Engineering Technical Conferences * -* and Computers and Information in Engineering Conference (IDETC/CIE2005) * -* September 24-28, 2005 , Long Beach, California, USA * -* http://www.me.berkeley.edu/~mcmains/pubs/DAC05OffsetPolygon.pdf * -* * -*******************************************************************************/ - -/******************************************************************************* -* * -* This is a translation of the Delphi Clipper library and the naming style * -* used has retained a Delphi flavour. * -* * -*******************************************************************************/ - -#include "clipper.h" -#include <cmath> -#include <vector> -#include <algorithm> -#include <stdexcept> -#include <cstring> -#include <cstdlib> -#include <ostream> -#include <functional> - -namespace QtClipperLib { - -static double const pi = 3.141592653589793238; -static double const two_pi = pi *2; -static double const def_arc_tolerance = 0.25; - -enum Direction { dRightToLeft, dLeftToRight }; - -static int const Unassigned = -1; //edge not currently 'owning' a solution -static int const Skip = -2; //edge that would otherwise close a path - -#define HORIZONTAL (-1.0E+40) -#define TOLERANCE (1.0e-20) -#define NEAR_ZERO(val) (((val) > -TOLERANCE) && ((val) < TOLERANCE)) - -struct TEdge { - IntPoint Bot; - IntPoint Curr; //current (updated for every new scanbeam) - IntPoint Top; - double Dx; - PolyType PolyTyp; - EdgeSide Side; //side only refers to current side of solution poly - int WindDelta; //1 or -1 depending on winding direction - int WindCnt; - int WindCnt2; //winding count of the opposite polytype - int OutIdx; - TEdge *Next; - TEdge *Prev; - TEdge *NextInLML; - TEdge *NextInAEL; - TEdge *PrevInAEL; - TEdge *NextInSEL; - TEdge *PrevInSEL; -}; - -struct IntersectNode { - TEdge *Edge1; - TEdge *Edge2; - IntPoint Pt; -}; - -struct LocalMinimum { - cInt Y; - TEdge *LeftBound; - TEdge *RightBound; -}; - -struct OutPt; - -//OutRec: contains a path in the clipping solution. Edges in the AEL will -//carry a pointer to an OutRec when they are part of the clipping solution. -struct OutRec { - int Idx; - bool IsHole; - bool IsOpen; - OutRec *FirstLeft; //see comments in clipper.pas - PolyNode *PolyNd; - OutPt *Pts; - OutPt *BottomPt; -}; - -struct OutPt { - int Idx; - IntPoint Pt; - OutPt *Next; - OutPt *Prev; -}; - -struct Join { - OutPt *OutPt1; - OutPt *OutPt2; - IntPoint OffPt; -}; - -struct LocMinSorter -{ - inline bool operator()(const LocalMinimum& locMin1, const LocalMinimum& locMin2) - { - return locMin2.Y < locMin1.Y; - } -}; - -//------------------------------------------------------------------------------ -//------------------------------------------------------------------------------ - -inline cInt Round(double val) -{ - if ((val < 0)) return static_cast<cInt>(val - 0.5); - else return static_cast<cInt>(val + 0.5); -} -//------------------------------------------------------------------------------ - -inline cInt Abs(cInt val) -{ - return val < 0 ? -val : val; -} - -//------------------------------------------------------------------------------ -// PolyTree methods ... -//------------------------------------------------------------------------------ - -void PolyTree::Clear() -{ - for (PolyNodes::size_type i = 0; i < AllNodes.size(); ++i) - delete AllNodes[i]; - AllNodes.resize(0); - Childs.resize(0); -} -//------------------------------------------------------------------------------ - -PolyNode* PolyTree::GetFirst() const -{ - if (!Childs.empty()) - return Childs[0]; - else - return 0; -} -//------------------------------------------------------------------------------ - -int PolyTree::Total() const -{ - int result = (int)AllNodes.size(); - //with negative offsets, ignore the hidden outer polygon ... - if (result > 0 && Childs[0] != AllNodes[0]) result--; - return result; -} - -//------------------------------------------------------------------------------ -// PolyNode methods ... -//------------------------------------------------------------------------------ - -PolyNode::PolyNode(): Parent(0), Index(0), m_IsOpen(false) -{ -} -//------------------------------------------------------------------------------ - -int PolyNode::ChildCount() const -{ - return (int)Childs.size(); -} -//------------------------------------------------------------------------------ - -void PolyNode::AddChild(PolyNode& child) -{ - unsigned cnt = (unsigned)Childs.size(); - Childs.push_back(&child); - child.Parent = this; - child.Index = cnt; -} -//------------------------------------------------------------------------------ - -PolyNode* PolyNode::GetNext() const -{ - if (!Childs.empty()) - return Childs[0]; - else - return GetNextSiblingUp(); -} -//------------------------------------------------------------------------------ - -PolyNode* PolyNode::GetNextSiblingUp() const -{ - if (!Parent) //protects against PolyTree.GetNextSiblingUp() - return 0; - else if (Index == Parent->Childs.size() - 1) - return Parent->GetNextSiblingUp(); - else - return Parent->Childs[Index + 1]; -} -//------------------------------------------------------------------------------ - -bool PolyNode::IsHole() const -{ - bool result = true; - PolyNode* node = Parent; - while (node) - { - result = !result; - node = node->Parent; - } - return result; -} -//------------------------------------------------------------------------------ - -bool PolyNode::IsOpen() const -{ - return m_IsOpen; -} -//------------------------------------------------------------------------------ - -#ifndef use_int32 - -//------------------------------------------------------------------------------ -// Int128 class (enables safe math on signed 64bit integers) -// eg Int128 val1((long64)9223372036854775807); //ie 2^63 -1 -// Int128 val2((long64)9223372036854775807); -// Int128 val3 = val1 * val2; -// val3.AsString => "85070591730234615847396907784232501249" (8.5e+37) -//------------------------------------------------------------------------------ - -class Int128 -{ - public: - ulong64 lo; - long64 hi; - - Int128(long64 _lo = 0) - { - lo = (ulong64)_lo; - if (_lo < 0) hi = -1; else hi = 0; - } - - - Int128(const Int128 &val): lo(val.lo), hi(val.hi){} - - Int128(const long64& _hi, const ulong64& _lo): lo(_lo), hi(_hi){} - - Int128& operator = (const long64 &val) - { - lo = (ulong64)val; - if (val < 0) hi = -1; else hi = 0; - return *this; - } - - bool operator == (const Int128 &val) const - {return (hi == val.hi && lo == val.lo);} - - bool operator != (const Int128 &val) const - { return !(*this == val);} - - bool operator > (const Int128 &val) const - { - if (hi != val.hi) - return hi > val.hi; - else - return lo > val.lo; - } - - bool operator < (const Int128 &val) const - { - if (hi != val.hi) - return hi < val.hi; - else - return lo < val.lo; - } - - bool operator >= (const Int128 &val) const - { return !(*this < val);} - - bool operator <= (const Int128 &val) const - { return !(*this > val);} - - Int128& operator += (const Int128 &rhs) - { - hi += rhs.hi; - lo += rhs.lo; - if (lo < rhs.lo) hi++; - return *this; - } - - Int128 operator + (const Int128 &rhs) const - { - Int128 result(*this); - result+= rhs; - return result; - } - - Int128& operator -= (const Int128 &rhs) - { - *this += -rhs; - return *this; - } - - Int128 operator - (const Int128 &rhs) const - { - Int128 result(*this); - result -= rhs; - return result; - } - - Int128 operator-() const //unary negation - { - if (lo == 0) - return Int128(-hi, 0); - else - return Int128(~hi, ~lo + 1); - } - - operator double() const - { - const double shift64 = 18446744073709551616.0; //2^64 - if (hi < 0) - { - if (lo == 0) return (double)hi * shift64; - else return -(double)(~lo + ~hi * shift64); - } - else - return (double)(lo + hi * shift64); - } - -}; -//------------------------------------------------------------------------------ - -Int128 Int128Mul (long64 lhs, long64 rhs) -{ - bool negate = (lhs < 0) != (rhs < 0); - - if (lhs < 0) lhs = -lhs; - ulong64 int1Hi = ulong64(lhs) >> 32; - ulong64 int1Lo = ulong64(lhs & 0xFFFFFFFF); - - if (rhs < 0) rhs = -rhs; - ulong64 int2Hi = ulong64(rhs) >> 32; - ulong64 int2Lo = ulong64(rhs & 0xFFFFFFFF); - - //nb: see comments in clipper.pas - ulong64 a = int1Hi * int2Hi; - ulong64 b = int1Lo * int2Lo; - ulong64 c = int1Hi * int2Lo + int1Lo * int2Hi; - - Int128 tmp; - tmp.hi = long64(a + (c >> 32)); - tmp.lo = long64(c << 32); - tmp.lo += long64(b); - if (tmp.lo < b) tmp.hi++; - if (negate) tmp = -tmp; - return tmp; -}; -#endif - -//------------------------------------------------------------------------------ -// Miscellaneous global functions -//------------------------------------------------------------------------------ - -bool Orientation(const Path &poly) -{ - return Area(poly) >= 0; -} -//------------------------------------------------------------------------------ - -double Area(const Path &poly) -{ - int size = (int)poly.size(); - if (size < 3) return 0; - - double a = 0; - for (int i = 0, j = size -1; i < size; ++i) - { - a += ((double)poly[j].X + poly[i].X) * ((double)poly[j].Y - poly[i].Y); - j = i; - } - return -a * 0.5; -} -//------------------------------------------------------------------------------ - -double Area(const OutPt *op) -{ - const OutPt *startOp = op; - if (!op) return 0; - double a = 0; - do { - a += (double)(op->Prev->Pt.X + op->Pt.X) * (double)(op->Prev->Pt.Y - op->Pt.Y); - op = op->Next; - } while (op != startOp); - return a * 0.5; -} -//------------------------------------------------------------------------------ - -double Area(const OutRec &outRec) -{ - return Area(outRec.Pts); -} -//------------------------------------------------------------------------------ - -bool PointIsVertex(const IntPoint &Pt, OutPt *pp) -{ - OutPt *pp2 = pp; - do - { - if (pp2->Pt == Pt) return true; - pp2 = pp2->Next; - } - while (pp2 != pp); - return false; -} -//------------------------------------------------------------------------------ - -//See "The Point in Polygon Problem for Arbitrary Polygons" by Hormann & Agathos -//http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.88.5498&rep=rep1&type=pdf -int PointInPolygon(const IntPoint &pt, const Path &path) -{ - //returns 0 if false, +1 if true, -1 if pt ON polygon boundary - int result = 0; - size_t cnt = path.size(); - if (cnt < 3) return 0; - IntPoint ip = path[0]; - for(size_t i = 1; i <= cnt; ++i) - { - IntPoint ipNext = (i == cnt ? path[0] : path[i]); - if (ipNext.Y == pt.Y) - { - if ((ipNext.X == pt.X) || (ip.Y == pt.Y && - ((ipNext.X > pt.X) == (ip.X < pt.X)))) return -1; - } - if ((ip.Y < pt.Y) != (ipNext.Y < pt.Y)) - { - if (ip.X >= pt.X) - { - if (ipNext.X > pt.X) result = 1 - result; - else - { - double d = (double)(ip.X - pt.X) * (ipNext.Y - pt.Y) - - (double)(ipNext.X - pt.X) * (ip.Y - pt.Y); - if (!d) return -1; - if ((d > 0) == (ipNext.Y > ip.Y)) result = 1 - result; - } - } else - { - if (ipNext.X > pt.X) - { - double d = (double)(ip.X - pt.X) * (ipNext.Y - pt.Y) - - (double)(ipNext.X - pt.X) * (ip.Y - pt.Y); - if (!d) return -1; - if ((d > 0) == (ipNext.Y > ip.Y)) result = 1 - result; - } - } - } - ip = ipNext; - } - return result; -} -//------------------------------------------------------------------------------ - -int PointInPolygon (const IntPoint &pt, OutPt *op) -{ - //returns 0 if false, +1 if true, -1 if pt ON polygon boundary - int result = 0; - OutPt* startOp = op; - for(;;) - { - if (op->Next->Pt.Y == pt.Y) - { - if ((op->Next->Pt.X == pt.X) || (op->Pt.Y == pt.Y && - ((op->Next->Pt.X > pt.X) == (op->Pt.X < pt.X)))) return -1; - } - if ((op->Pt.Y < pt.Y) != (op->Next->Pt.Y < pt.Y)) - { - if (op->Pt.X >= pt.X) - { - if (op->Next->Pt.X > pt.X) result = 1 - result; - else - { - double d = (double)(op->Pt.X - pt.X) * (op->Next->Pt.Y - pt.Y) - - (double)(op->Next->Pt.X - pt.X) * (op->Pt.Y - pt.Y); - if (!d) return -1; - if ((d > 0) == (op->Next->Pt.Y > op->Pt.Y)) result = 1 - result; - } - } else - { - if (op->Next->Pt.X > pt.X) - { - double d = (double)(op->Pt.X - pt.X) * (op->Next->Pt.Y - pt.Y) - - (double)(op->Next->Pt.X - pt.X) * (op->Pt.Y - pt.Y); - if (!d) return -1; - if ((d > 0) == (op->Next->Pt.Y > op->Pt.Y)) result = 1 - result; - } - } - } - op = op->Next; - if (startOp == op) break; - } - return result; -} -//------------------------------------------------------------------------------ - -bool Poly2ContainsPoly1(OutPt *OutPt1, OutPt *OutPt2) -{ - OutPt* op = OutPt1; - do - { - //nb: PointInPolygon returns 0 if false, +1 if true, -1 if pt on polygon - int res = PointInPolygon(op->Pt, OutPt2); - if (res >= 0) return res > 0; - op = op->Next; - } - while (op != OutPt1); - return true; -} -//---------------------------------------------------------------------- - -bool SlopesEqual(const TEdge &e1, const TEdge &e2, bool UseFullInt64Range) -{ -#ifndef use_int32 - if (UseFullInt64Range) - return Int128Mul(e1.Top.Y - e1.Bot.Y, e2.Top.X - e2.Bot.X) == - Int128Mul(e1.Top.X - e1.Bot.X, e2.Top.Y - e2.Bot.Y); - else -#endif - return (e1.Top.Y - e1.Bot.Y) * (e2.Top.X - e2.Bot.X) == - (e1.Top.X - e1.Bot.X) * (e2.Top.Y - e2.Bot.Y); -} -//------------------------------------------------------------------------------ - -bool SlopesEqual(const IntPoint pt1, const IntPoint pt2, - const IntPoint pt3, bool UseFullInt64Range) -{ -#ifndef use_int32 - if (UseFullInt64Range) - return Int128Mul(pt1.Y-pt2.Y, pt2.X-pt3.X) == Int128Mul(pt1.X-pt2.X, pt2.Y-pt3.Y); - else -#endif - return (pt1.Y-pt2.Y)*(pt2.X-pt3.X) == (pt1.X-pt2.X)*(pt2.Y-pt3.Y); -} -//------------------------------------------------------------------------------ - -bool SlopesEqual(const IntPoint pt1, const IntPoint pt2, - const IntPoint pt3, const IntPoint pt4, bool UseFullInt64Range) -{ -#ifndef use_int32 - if (UseFullInt64Range) - return Int128Mul(pt1.Y-pt2.Y, pt3.X-pt4.X) == Int128Mul(pt1.X-pt2.X, pt3.Y-pt4.Y); - else -#endif - return (pt1.Y-pt2.Y)*(pt3.X-pt4.X) == (pt1.X-pt2.X)*(pt3.Y-pt4.Y); -} -//------------------------------------------------------------------------------ - -inline bool IsHorizontal(TEdge &e) -{ - return e.Dx == HORIZONTAL; -} -//------------------------------------------------------------------------------ - -inline double GetDx(const IntPoint pt1, const IntPoint pt2) -{ - return (pt1.Y == pt2.Y) ? - HORIZONTAL : (double)(pt2.X - pt1.X) / (pt2.Y - pt1.Y); -} -//--------------------------------------------------------------------------- - -inline void SetDx(TEdge &e) -{ - cInt dy = (e.Top.Y - e.Bot.Y); - if (dy == 0) e.Dx = HORIZONTAL; - else e.Dx = (double)(e.Top.X - e.Bot.X) / dy; -} -//--------------------------------------------------------------------------- - -inline void SwapSides(TEdge &Edge1, TEdge &Edge2) -{ - EdgeSide Side = Edge1.Side; - Edge1.Side = Edge2.Side; - Edge2.Side = Side; -} -//------------------------------------------------------------------------------ - -inline void SwapPolyIndexes(TEdge &Edge1, TEdge &Edge2) -{ - int OutIdx = Edge1.OutIdx; - Edge1.OutIdx = Edge2.OutIdx; - Edge2.OutIdx = OutIdx; -} -//------------------------------------------------------------------------------ - -inline cInt TopX(TEdge &edge, const cInt currentY) -{ - return ( currentY == edge.Top.Y ) ? - edge.Top.X : edge.Bot.X + Round(edge.Dx *(currentY - edge.Bot.Y)); -} -//------------------------------------------------------------------------------ - -void IntersectPoint(TEdge &Edge1, TEdge &Edge2, IntPoint &ip) -{ -#ifdef use_xyz - ip.Z = 0; -#endif - - double b1, b2; - if (Edge1.Dx == Edge2.Dx) - { - ip.Y = Edge1.Curr.Y; - ip.X = TopX(Edge1, ip.Y); - return; - } - else if (Edge1.Dx == 0) - { - ip.X = Edge1.Bot.X; - if (IsHorizontal(Edge2)) - ip.Y = Edge2.Bot.Y; - else - { - b2 = Edge2.Bot.Y - (Edge2.Bot.X / Edge2.Dx); - ip.Y = Round(ip.X / Edge2.Dx + b2); - } - } - else if (Edge2.Dx == 0) - { - ip.X = Edge2.Bot.X; - if (IsHorizontal(Edge1)) - ip.Y = Edge1.Bot.Y; - else - { - b1 = Edge1.Bot.Y - (Edge1.Bot.X / Edge1.Dx); - ip.Y = Round(ip.X / Edge1.Dx + b1); - } - } - else - { - b1 = Edge1.Bot.X - Edge1.Bot.Y * Edge1.Dx; - b2 = Edge2.Bot.X - Edge2.Bot.Y * Edge2.Dx; - double q = (b2-b1) / (Edge1.Dx - Edge2.Dx); - ip.Y = Round(q); - if (std::fabs(Edge1.Dx) < std::fabs(Edge2.Dx)) - ip.X = Round(Edge1.Dx * q + b1); - else - ip.X = Round(Edge2.Dx * q + b2); - } - - if (ip.Y < Edge1.Top.Y || ip.Y < Edge2.Top.Y) - { - if (Edge1.Top.Y > Edge2.Top.Y) - ip.Y = Edge1.Top.Y; - else - ip.Y = Edge2.Top.Y; - if (std::fabs(Edge1.Dx) < std::fabs(Edge2.Dx)) - ip.X = TopX(Edge1, ip.Y); - else - ip.X = TopX(Edge2, ip.Y); - } - //finally, don't allow 'ip' to be BELOW curr.Y (ie bottom of scanbeam) ... - if (ip.Y > Edge1.Curr.Y) - { - ip.Y = Edge1.Curr.Y; - //use the more vertical edge to derive X ... - if (std::fabs(Edge1.Dx) > std::fabs(Edge2.Dx)) - ip.X = TopX(Edge2, ip.Y); else - ip.X = TopX(Edge1, ip.Y); - } -} -//------------------------------------------------------------------------------ - -void ReversePolyPtLinks(OutPt *pp) -{ - if (!pp) return; - OutPt *pp1, *pp2; - pp1 = pp; - do { - pp2 = pp1->Next; - pp1->Next = pp1->Prev; - pp1->Prev = pp2; - pp1 = pp2; - } while( pp1 != pp ); -} -//------------------------------------------------------------------------------ - -void DisposeOutPts(OutPt*& pp) -{ - if (pp == 0) return; - pp->Prev->Next = 0; - while( pp ) - { - OutPt *tmpPp = pp; - pp = pp->Next; - delete tmpPp; - } -} -//------------------------------------------------------------------------------ - -inline void InitEdge(TEdge* e, TEdge* eNext, TEdge* ePrev, const IntPoint& Pt) -{ - std::memset(e, 0, sizeof(TEdge)); - e->Next = eNext; - e->Prev = ePrev; - e->Curr = Pt; - e->OutIdx = Unassigned; -} -//------------------------------------------------------------------------------ - -void InitEdge2(TEdge& e, PolyType Pt) -{ - if (e.Curr.Y >= e.Next->Curr.Y) - { - e.Bot = e.Curr; - e.Top = e.Next->Curr; - } else - { - e.Top = e.Curr; - e.Bot = e.Next->Curr; - } - SetDx(e); - e.PolyTyp = Pt; -} -//------------------------------------------------------------------------------ - -TEdge* RemoveEdge(TEdge* e) -{ - //removes e from double_linked_list (but without removing from memory) - e->Prev->Next = e->Next; - e->Next->Prev = e->Prev; - TEdge* result = e->Next; - e->Prev = 0; //flag as removed (see ClipperBase.Clear) - return result; -} -//------------------------------------------------------------------------------ - -inline void ReverseHorizontal(TEdge &e) -{ - //swap horizontal edges' Top and Bottom x's so they follow the natural - //progression of the bounds - ie so their xbots will align with the - //adjoining lower edge. [Helpful in the ProcessHorizontal() method.] - std::swap(e.Top.X, e.Bot.X); -#ifdef use_xyz - std::swap(e.Top.Z, e.Bot.Z); -#endif -} -//------------------------------------------------------------------------------ - -void SwapPoints(IntPoint &pt1, IntPoint &pt2) -{ - IntPoint tmp = pt1; - pt1 = pt2; - pt2 = tmp; -} -//------------------------------------------------------------------------------ - -bool GetOverlapSegment(IntPoint pt1a, IntPoint pt1b, IntPoint pt2a, - IntPoint pt2b, IntPoint &pt1, IntPoint &pt2) -{ - //precondition: segments are Collinear. - if (Abs(pt1a.X - pt1b.X) > Abs(pt1a.Y - pt1b.Y)) - { - if (pt1a.X > pt1b.X) SwapPoints(pt1a, pt1b); - if (pt2a.X > pt2b.X) SwapPoints(pt2a, pt2b); - if (pt1a.X > pt2a.X) pt1 = pt1a; else pt1 = pt2a; - if (pt1b.X < pt2b.X) pt2 = pt1b; else pt2 = pt2b; - return pt1.X < pt2.X; - } else - { - if (pt1a.Y < pt1b.Y) SwapPoints(pt1a, pt1b); - if (pt2a.Y < pt2b.Y) SwapPoints(pt2a, pt2b); - if (pt1a.Y < pt2a.Y) pt1 = pt1a; else pt1 = pt2a; - if (pt1b.Y > pt2b.Y) pt2 = pt1b; else pt2 = pt2b; - return pt1.Y > pt2.Y; - } -} -//------------------------------------------------------------------------------ - -bool FirstIsBottomPt(const OutPt* btmPt1, const OutPt* btmPt2) -{ - OutPt *p = btmPt1->Prev; - while ((p->Pt == btmPt1->Pt) && (p != btmPt1)) p = p->Prev; - double dx1p = std::fabs(GetDx(btmPt1->Pt, p->Pt)); - p = btmPt1->Next; - while ((p->Pt == btmPt1->Pt) && (p != btmPt1)) p = p->Next; - double dx1n = std::fabs(GetDx(btmPt1->Pt, p->Pt)); - - p = btmPt2->Prev; - while ((p->Pt == btmPt2->Pt) && (p != btmPt2)) p = p->Prev; - double dx2p = std::fabs(GetDx(btmPt2->Pt, p->Pt)); - p = btmPt2->Next; - while ((p->Pt == btmPt2->Pt) && (p != btmPt2)) p = p->Next; - double dx2n = std::fabs(GetDx(btmPt2->Pt, p->Pt)); - - if (std::max(dx1p, dx1n) == std::max(dx2p, dx2n) && - std::min(dx1p, dx1n) == std::min(dx2p, dx2n)) - return Area(btmPt1) > 0; //if otherwise identical use orientation - else - return (dx1p >= dx2p && dx1p >= dx2n) || (dx1n >= dx2p && dx1n >= dx2n); -} -//------------------------------------------------------------------------------ - -OutPt* GetBottomPt(OutPt *pp) -{ - OutPt* dups = 0; - OutPt* p = pp->Next; - while (p != pp) - { - if (p->Pt.Y > pp->Pt.Y) - { - pp = p; - dups = 0; - } - else if (p->Pt.Y == pp->Pt.Y && p->Pt.X <= pp->Pt.X) - { - if (p->Pt.X < pp->Pt.X) - { - dups = 0; - pp = p; - } else - { - if (p->Next != pp && p->Prev != pp) dups = p; - } - } - p = p->Next; - } - if (dups) - { - //there appears to be at least 2 vertices at BottomPt so ... - while (dups != p) - { - if (!FirstIsBottomPt(p, dups)) pp = dups; - dups = dups->Next; - while (dups->Pt != pp->Pt) dups = dups->Next; - } - } - return pp; -} -//------------------------------------------------------------------------------ - -bool Pt2IsBetweenPt1AndPt3(const IntPoint pt1, - const IntPoint pt2, const IntPoint pt3) -{ - if ((pt1 == pt3) || (pt1 == pt2) || (pt3 == pt2)) - return false; - else if (pt1.X != pt3.X) - return (pt2.X > pt1.X) == (pt2.X < pt3.X); - else - return (pt2.Y > pt1.Y) == (pt2.Y < pt3.Y); -} -//------------------------------------------------------------------------------ - -bool HorzSegmentsOverlap(cInt seg1a, cInt seg1b, cInt seg2a, cInt seg2b) -{ - if (seg1a > seg1b) std::swap(seg1a, seg1b); - if (seg2a > seg2b) std::swap(seg2a, seg2b); - return (seg1a < seg2b) && (seg2a < seg1b); -} - -//------------------------------------------------------------------------------ -// ClipperBase class methods ... -//------------------------------------------------------------------------------ - -ClipperBase::ClipperBase() //constructor -{ - m_CurrentLM = m_MinimaList.begin(); //begin() == end() here - m_UseFullRange = false; -} -//------------------------------------------------------------------------------ - -ClipperBase::~ClipperBase() //destructor -{ - Clear(); -} -//------------------------------------------------------------------------------ - -void RangeTest(const IntPoint& Pt, bool& useFullRange) -{ - if (useFullRange) - { - if (Pt.X > hiRange || Pt.Y > hiRange || -Pt.X > hiRange || -Pt.Y > hiRange) - throw clipperException("Coordinate outside allowed range"); - } - else if (Pt.X > loRange|| Pt.Y > loRange || -Pt.X > loRange || -Pt.Y > loRange) - { - useFullRange = true; - RangeTest(Pt, useFullRange); - } -} -//------------------------------------------------------------------------------ - -TEdge* FindNextLocMin(TEdge* E) -{ - for (;;) - { - while (E->Bot != E->Prev->Bot || E->Curr == E->Top) E = E->Next; - if (!IsHorizontal(*E) && !IsHorizontal(*E->Prev)) break; - while (IsHorizontal(*E->Prev)) E = E->Prev; - TEdge* E2 = E; - while (IsHorizontal(*E)) E = E->Next; - if (E->Top.Y == E->Prev->Bot.Y) continue; //ie just an intermediate horz. - if (E2->Prev->Bot.X < E->Bot.X) E = E2; - break; - } - return E; -} -//------------------------------------------------------------------------------ - -TEdge* ClipperBase::ProcessBound(TEdge* E, bool NextIsForward) -{ - TEdge *Result = E; - TEdge *Horz = 0; - - if (E->OutIdx == Skip) - { - //if edges still remain in the current bound beyond the skip edge then - //create another LocMin and call ProcessBound once more - if (NextIsForward) - { - while (E->Top.Y == E->Next->Bot.Y) E = E->Next; - //don't include top horizontals when parsing a bound a second time, - //they will be contained in the opposite bound ... - while (E != Result && IsHorizontal(*E)) E = E->Prev; - } - else - { - while (E->Top.Y == E->Prev->Bot.Y) E = E->Prev; - while (E != Result && IsHorizontal(*E)) E = E->Next; - } - - if (E == Result) - { - if (NextIsForward) Result = E->Next; - else Result = E->Prev; - } - else - { - //there are more edges in the bound beyond result starting with E - if (NextIsForward) - E = Result->Next; - else - E = Result->Prev; - MinimaList::value_type locMin; - locMin.Y = E->Bot.Y; - locMin.LeftBound = 0; - locMin.RightBound = E; - E->WindDelta = 0; - Result = ProcessBound(E, NextIsForward); - m_MinimaList.push_back(locMin); - } - return Result; - } - - TEdge *EStart; - - if (IsHorizontal(*E)) - { - //We need to be careful with open paths because this may not be a - //true local minima (ie E may be following a skip edge). - //Also, consecutive horz. edges may start heading left before going right. - if (NextIsForward) - EStart = E->Prev; - else - EStart = E->Next; - if (IsHorizontal(*EStart)) //ie an adjoining horizontal skip edge - { - if (EStart->Bot.X != E->Bot.X && EStart->Top.X != E->Bot.X) - ReverseHorizontal(*E); - } - else if (EStart->Bot.X != E->Bot.X) - ReverseHorizontal(*E); - } - - EStart = E; - if (NextIsForward) - { - while (Result->Top.Y == Result->Next->Bot.Y && Result->Next->OutIdx != Skip) - Result = Result->Next; - if (IsHorizontal(*Result) && Result->Next->OutIdx != Skip) - { - //nb: at the top of a bound, horizontals are added to the bound - //only when the preceding edge attaches to the horizontal's left vertex - //unless a Skip edge is encountered when that becomes the top divide - Horz = Result; - while (IsHorizontal(*Horz->Prev)) Horz = Horz->Prev; - if (Horz->Prev->Top.X > Result->Next->Top.X) Result = Horz->Prev; - } - while (E != Result) - { - E->NextInLML = E->Next; - if (IsHorizontal(*E) && E != EStart && - E->Bot.X != E->Prev->Top.X) ReverseHorizontal(*E); - E = E->Next; - } - if (IsHorizontal(*E) && E != EStart && E->Bot.X != E->Prev->Top.X) - ReverseHorizontal(*E); - Result = Result->Next; //move to the edge just beyond current bound - } else - { - while (Result->Top.Y == Result->Prev->Bot.Y && Result->Prev->OutIdx != Skip) - Result = Result->Prev; - if (IsHorizontal(*Result) && Result->Prev->OutIdx != Skip) - { - Horz = Result; - while (IsHorizontal(*Horz->Next)) Horz = Horz->Next; - if (Horz->Next->Top.X == Result->Prev->Top.X || - Horz->Next->Top.X > Result->Prev->Top.X) Result = Horz->Next; - } - - while (E != Result) - { - E->NextInLML = E->Prev; - if (IsHorizontal(*E) && E != EStart && E->Bot.X != E->Next->Top.X) - ReverseHorizontal(*E); - E = E->Prev; - } - if (IsHorizontal(*E) && E != EStart && E->Bot.X != E->Next->Top.X) - ReverseHorizontal(*E); - Result = Result->Prev; //move to the edge just beyond current bound - } - - return Result; -} -//------------------------------------------------------------------------------ - -bool ClipperBase::AddPath(const Path &pg, PolyType PolyTyp, bool Closed) -{ -#ifdef use_lines - if (!Closed && PolyTyp == ptClip) - throw clipperException("AddPath: Open paths must be subject."); -#else - if (!Closed) - throw clipperException("AddPath: Open paths have been disabled."); -#endif - - int highI = (int)pg.size() -1; - if (Closed) while (highI > 0 && (pg[highI] == pg[0])) --highI; - while (highI > 0 && (pg[highI] == pg[highI -1])) --highI; - if ((Closed && highI < 2) || (!Closed && highI < 1)) return false; - - //create a new edge array ... - TEdge *edges = new TEdge [highI +1]; - - bool IsFlat = true; - //1. Basic (first) edge initialization ... - try - { - edges[1].Curr = pg[1]; - RangeTest(pg[0], m_UseFullRange); - RangeTest(pg[highI], m_UseFullRange); - InitEdge(&edges[0], &edges[1], &edges[highI], pg[0]); - InitEdge(&edges[highI], &edges[0], &edges[highI-1], pg[highI]); - for (int i = highI - 1; i >= 1; --i) - { - RangeTest(pg[i], m_UseFullRange); - InitEdge(&edges[i], &edges[i+1], &edges[i-1], pg[i]); - } - } - catch(...) - { - delete [] edges; - throw; //range test fails - } - TEdge *eStart = &edges[0]; - - //2. Remove duplicate vertices, and (when closed) collinear edges ... - TEdge *E = eStart, *eLoopStop = eStart; - for (;;) - { - //nb: allows matching start and end points when not Closed ... - if (E->Curr == E->Next->Curr && (Closed || E->Next != eStart)) - { - if (E == E->Next) break; - if (E == eStart) eStart = E->Next; - E = RemoveEdge(E); - eLoopStop = E; - continue; - } - if (E->Prev == E->Next) - break; //only two vertices - else if (Closed && - SlopesEqual(E->Prev->Curr, E->Curr, E->Next->Curr, m_UseFullRange) && - (!m_PreserveCollinear || - !Pt2IsBetweenPt1AndPt3(E->Prev->Curr, E->Curr, E->Next->Curr))) - { - //Collinear edges are allowed for open paths but in closed paths - //the default is to merge adjacent collinear edges into a single edge. - //However, if the PreserveCollinear property is enabled, only overlapping - //collinear edges (ie spikes) will be removed from closed paths. - if (E == eStart) eStart = E->Next; - E = RemoveEdge(E); - E = E->Prev; - eLoopStop = E; - continue; - } - E = E->Next; - if ((E == eLoopStop) || (!Closed && E->Next == eStart)) break; - } - - if ((!Closed && (E == E->Next)) || (Closed && (E->Prev == E->Next))) - { - delete [] edges; - return false; - } - - if (!Closed) - { - m_HasOpenPaths = true; - eStart->Prev->OutIdx = Skip; - } - - //3. Do second stage of edge initialization ... - E = eStart; - do - { - InitEdge2(*E, PolyTyp); - E = E->Next; - if (IsFlat && E->Curr.Y != eStart->Curr.Y) IsFlat = false; - } - while (E != eStart); - - //4. Finally, add edge bounds to LocalMinima list ... - - //Totally flat paths must be handled differently when adding them - //to LocalMinima list to avoid endless loops etc ... - if (IsFlat) - { - if (Closed) - { - delete [] edges; - return false; - } - E->Prev->OutIdx = Skip; - MinimaList::value_type locMin; - locMin.Y = E->Bot.Y; - locMin.LeftBound = 0; - locMin.RightBound = E; - locMin.RightBound->Side = esRight; - locMin.RightBound->WindDelta = 0; - for (;;) - { - if (E->Bot.X != E->Prev->Top.X) ReverseHorizontal(*E); - if (E->Next->OutIdx == Skip) break; - E->NextInLML = E->Next; - E = E->Next; - } - m_MinimaList.push_back(locMin); - m_edges.push_back(edges); - return true; - } - - m_edges.push_back(edges); - bool leftBoundIsForward; - TEdge* EMin = 0; - - //workaround to avoid an endless loop in the while loop below when - //open paths have matching start and end points ... - if (E->Prev->Bot == E->Prev->Top) E = E->Next; - - for (;;) - { - E = FindNextLocMin(E); - if (E == EMin) break; - else if (!EMin) EMin = E; - - //E and E.Prev now share a local minima (left aligned if horizontal). - //Compare their slopes to find which starts which bound ... - MinimaList::value_type locMin; - locMin.Y = E->Bot.Y; - if (E->Dx < E->Prev->Dx) - { - locMin.LeftBound = E->Prev; - locMin.RightBound = E; - leftBoundIsForward = false; //Q.nextInLML = Q.prev - } else - { - locMin.LeftBound = E; - locMin.RightBound = E->Prev; - leftBoundIsForward = true; //Q.nextInLML = Q.next - } - - if (!Closed) locMin.LeftBound->WindDelta = 0; - else if (locMin.LeftBound->Next == locMin.RightBound) - locMin.LeftBound->WindDelta = -1; - else locMin.LeftBound->WindDelta = 1; - locMin.RightBound->WindDelta = -locMin.LeftBound->WindDelta; - - E = ProcessBound(locMin.LeftBound, leftBoundIsForward); - if (E->OutIdx == Skip) E = ProcessBound(E, leftBoundIsForward); - - TEdge* E2 = ProcessBound(locMin.RightBound, !leftBoundIsForward); - if (E2->OutIdx == Skip) E2 = ProcessBound(E2, !leftBoundIsForward); - - if (locMin.LeftBound->OutIdx == Skip) - locMin.LeftBound = 0; - else if (locMin.RightBound->OutIdx == Skip) - locMin.RightBound = 0; - m_MinimaList.push_back(locMin); - if (!leftBoundIsForward) E = E2; - } - return true; -} -//------------------------------------------------------------------------------ - -bool ClipperBase::AddPaths(const Paths &ppg, PolyType PolyTyp, bool Closed) -{ - bool result = false; - for (Paths::size_type i = 0; i < ppg.size(); ++i) - if (AddPath(ppg[i], PolyTyp, Closed)) result = true; - return result; -} -//------------------------------------------------------------------------------ - -void ClipperBase::Clear() -{ - DisposeLocalMinimaList(); - for (EdgeList::size_type i = 0; i < m_edges.size(); ++i) - { - TEdge* edges = m_edges[i]; - delete [] edges; - } - m_edges.clear(); - m_UseFullRange = false; - m_HasOpenPaths = false; -} -//------------------------------------------------------------------------------ - -void ClipperBase::Reset() -{ - m_CurrentLM = m_MinimaList.begin(); - if (m_CurrentLM == m_MinimaList.end()) return; //ie nothing to process - std::sort(m_MinimaList.begin(), m_MinimaList.end(), LocMinSorter()); - - m_Scanbeam = ScanbeamList(); //clears/resets priority_queue - //reset all edges ... - for (MinimaList::iterator lm = m_MinimaList.begin(); lm != m_MinimaList.end(); ++lm) - { - InsertScanbeam(lm->Y); - TEdge* e = lm->LeftBound; - if (e) - { - e->Curr = e->Bot; - e->Side = esLeft; - e->OutIdx = Unassigned; - } - - e = lm->RightBound; - if (e) - { - e->Curr = e->Bot; - e->Side = esRight; - e->OutIdx = Unassigned; - } - } - m_ActiveEdges = 0; - m_CurrentLM = m_MinimaList.begin(); -} -//------------------------------------------------------------------------------ - -void ClipperBase::DisposeLocalMinimaList() -{ - m_MinimaList.clear(); - m_CurrentLM = m_MinimaList.begin(); -} -//------------------------------------------------------------------------------ - -bool ClipperBase::PopLocalMinima(cInt Y, const LocalMinimum *&locMin) -{ - if (m_CurrentLM == m_MinimaList.end() || (*m_CurrentLM).Y != Y) return false; - locMin = &(*m_CurrentLM); - ++m_CurrentLM; - return true; -} -//------------------------------------------------------------------------------ - -IntRect ClipperBase::GetBounds() -{ - IntRect result; - MinimaList::iterator lm = m_MinimaList.begin(); - if (lm == m_MinimaList.end()) - { - result.left = result.top = result.right = result.bottom = 0; - return result; - } - result.left = lm->LeftBound->Bot.X; - result.top = lm->LeftBound->Bot.Y; - result.right = lm->LeftBound->Bot.X; - result.bottom = lm->LeftBound->Bot.Y; - while (lm != m_MinimaList.end()) - { - //todo - needs fixing for open paths - result.bottom = std::max(result.bottom, lm->LeftBound->Bot.Y); - TEdge* e = lm->LeftBound; - for (;;) { - TEdge* bottomE = e; - while (e->NextInLML) - { - if (e->Bot.X < result.left) result.left = e->Bot.X; - if (e->Bot.X > result.right) result.right = e->Bot.X; - e = e->NextInLML; - } - result.left = std::min(result.left, e->Bot.X); - result.right = std::max(result.right, e->Bot.X); - result.left = std::min(result.left, e->Top.X); - result.right = std::max(result.right, e->Top.X); - result.top = std::min(result.top, e->Top.Y); - if (bottomE == lm->LeftBound) e = lm->RightBound; - else break; - } - ++lm; - } - return result; -} -//------------------------------------------------------------------------------ - -void ClipperBase::InsertScanbeam(const cInt Y) -{ - m_Scanbeam.push(Y); -} -//------------------------------------------------------------------------------ - -bool ClipperBase::PopScanbeam(cInt &Y) -{ - if (m_Scanbeam.empty()) return false; - Y = m_Scanbeam.top(); - m_Scanbeam.pop(); - while (!m_Scanbeam.empty() && Y == m_Scanbeam.top()) { m_Scanbeam.pop(); } // Pop duplicates. - return true; -} -//------------------------------------------------------------------------------ - -void ClipperBase::DisposeAllOutRecs(){ - for (PolyOutList::size_type i = 0; i < m_PolyOuts.size(); ++i) - DisposeOutRec(i); - m_PolyOuts.clear(); -} -//------------------------------------------------------------------------------ - -void ClipperBase::DisposeOutRec(PolyOutList::size_type index) -{ - OutRec *outRec = m_PolyOuts[index]; - if (outRec->Pts) DisposeOutPts(outRec->Pts); - delete outRec; - m_PolyOuts[index] = 0; -} -//------------------------------------------------------------------------------ - -void ClipperBase::DeleteFromAEL(TEdge *e) -{ - TEdge* AelPrev = e->PrevInAEL; - TEdge* AelNext = e->NextInAEL; - if (!AelPrev && !AelNext && (e != m_ActiveEdges)) return; //already deleted - if (AelPrev) AelPrev->NextInAEL = AelNext; - else m_ActiveEdges = AelNext; - if (AelNext) AelNext->PrevInAEL = AelPrev; - e->NextInAEL = 0; - e->PrevInAEL = 0; -} -//------------------------------------------------------------------------------ - -OutRec* ClipperBase::CreateOutRec() -{ - OutRec* result = new OutRec; - result->IsHole = false; - result->IsOpen = false; - result->FirstLeft = 0; - result->Pts = 0; - result->BottomPt = 0; - result->PolyNd = 0; - m_PolyOuts.push_back(result); - result->Idx = (int)m_PolyOuts.size() - 1; - return result; -} -//------------------------------------------------------------------------------ - -void ClipperBase::SwapPositionsInAEL(TEdge *Edge1, TEdge *Edge2) -{ - //check that one or other edge hasn't already been removed from AEL ... - if (Edge1->NextInAEL == Edge1->PrevInAEL || - Edge2->NextInAEL == Edge2->PrevInAEL) return; - - if (Edge1->NextInAEL == Edge2) - { - TEdge* Next = Edge2->NextInAEL; - if (Next) Next->PrevInAEL = Edge1; - TEdge* Prev = Edge1->PrevInAEL; - if (Prev) Prev->NextInAEL = Edge2; - Edge2->PrevInAEL = Prev; - Edge2->NextInAEL = Edge1; - Edge1->PrevInAEL = Edge2; - Edge1->NextInAEL = Next; - } - else if (Edge2->NextInAEL == Edge1) - { - TEdge* Next = Edge1->NextInAEL; - if (Next) Next->PrevInAEL = Edge2; - TEdge* Prev = Edge2->PrevInAEL; - if (Prev) Prev->NextInAEL = Edge1; - Edge1->PrevInAEL = Prev; - Edge1->NextInAEL = Edge2; - Edge2->PrevInAEL = Edge1; - Edge2->NextInAEL = Next; - } - else - { - TEdge* Next = Edge1->NextInAEL; - TEdge* Prev = Edge1->PrevInAEL; - Edge1->NextInAEL = Edge2->NextInAEL; - if (Edge1->NextInAEL) Edge1->NextInAEL->PrevInAEL = Edge1; - Edge1->PrevInAEL = Edge2->PrevInAEL; - if (Edge1->PrevInAEL) Edge1->PrevInAEL->NextInAEL = Edge1; - Edge2->NextInAEL = Next; - if (Edge2->NextInAEL) Edge2->NextInAEL->PrevInAEL = Edge2; - Edge2->PrevInAEL = Prev; - if (Edge2->PrevInAEL) Edge2->PrevInAEL->NextInAEL = Edge2; - } - - if (!Edge1->PrevInAEL) m_ActiveEdges = Edge1; - else if (!Edge2->PrevInAEL) m_ActiveEdges = Edge2; -} -//------------------------------------------------------------------------------ - -void ClipperBase::UpdateEdgeIntoAEL(TEdge *&e) -{ - if (!e->NextInLML) - throw clipperException("UpdateEdgeIntoAEL: invalid call"); - - e->NextInLML->OutIdx = e->OutIdx; - TEdge* AelPrev = e->PrevInAEL; - TEdge* AelNext = e->NextInAEL; - if (AelPrev) AelPrev->NextInAEL = e->NextInLML; - else m_ActiveEdges = e->NextInLML; - if (AelNext) AelNext->PrevInAEL = e->NextInLML; - e->NextInLML->Side = e->Side; - e->NextInLML->WindDelta = e->WindDelta; - e->NextInLML->WindCnt = e->WindCnt; - e->NextInLML->WindCnt2 = e->WindCnt2; - e = e->NextInLML; - e->Curr = e->Bot; - e->PrevInAEL = AelPrev; - e->NextInAEL = AelNext; - if (!IsHorizontal(*e)) InsertScanbeam(e->Top.Y); -} -//------------------------------------------------------------------------------ - -bool ClipperBase::LocalMinimaPending() -{ - return (m_CurrentLM != m_MinimaList.end()); -} - -//------------------------------------------------------------------------------ -// TClipper methods ... -//------------------------------------------------------------------------------ - -Clipper::Clipper(int initOptions) : ClipperBase() //constructor -{ - m_ExecuteLocked = false; - m_UseFullRange = false; - m_ReverseOutput = ((initOptions & ioReverseSolution) != 0); - m_StrictSimple = ((initOptions & ioStrictlySimple) != 0); - m_PreserveCollinear = ((initOptions & ioPreserveCollinear) != 0); - m_HasOpenPaths = false; -#ifdef use_xyz - m_ZFill = 0; -#endif -} -//------------------------------------------------------------------------------ - -#ifdef use_xyz -void Clipper::ZFillFunction(ZFillCallback zFillFunc) -{ - m_ZFill = zFillFunc; -} -//------------------------------------------------------------------------------ -#endif - -bool Clipper::Execute(ClipType clipType, Paths &solution, PolyFillType fillType) -{ - return Execute(clipType, solution, fillType, fillType); -} -//------------------------------------------------------------------------------ - -bool Clipper::Execute(ClipType clipType, PolyTree &polytree, PolyFillType fillType) -{ - return Execute(clipType, polytree, fillType, fillType); -} -//------------------------------------------------------------------------------ - -bool Clipper::Execute(ClipType clipType, Paths &solution, - PolyFillType subjFillType, PolyFillType clipFillType) -{ - if( m_ExecuteLocked ) return false; - if (m_HasOpenPaths) - throw clipperException("Error: PolyTree struct is needed for open path clipping."); - m_ExecuteLocked = true; - solution.resize(0); - m_SubjFillType = subjFillType; - m_ClipFillType = clipFillType; - m_ClipType = clipType; - m_UsingPolyTree = false; - bool succeeded = ExecuteInternal(); - if (succeeded) BuildResult(solution); - DisposeAllOutRecs(); - m_ExecuteLocked = false; - return succeeded; -} -//------------------------------------------------------------------------------ - -bool Clipper::Execute(ClipType clipType, PolyTree& polytree, - PolyFillType subjFillType, PolyFillType clipFillType) -{ - if( m_ExecuteLocked ) return false; - m_ExecuteLocked = true; - m_SubjFillType = subjFillType; - m_ClipFillType = clipFillType; - m_ClipType = clipType; - m_UsingPolyTree = true; - bool succeeded = ExecuteInternal(); - if (succeeded) BuildResult2(polytree); - DisposeAllOutRecs(); - m_ExecuteLocked = false; - return succeeded; -} -//------------------------------------------------------------------------------ - -void Clipper::FixHoleLinkage(OutRec &outrec) -{ - //skip OutRecs that (a) contain outermost polygons or - //(b) already have the correct owner/child linkage ... - if (!outrec.FirstLeft || - (outrec.IsHole != outrec.FirstLeft->IsHole && - outrec.FirstLeft->Pts)) return; - - OutRec* orfl = outrec.FirstLeft; - while (orfl && ((orfl->IsHole == outrec.IsHole) || !orfl->Pts)) - orfl = orfl->FirstLeft; - outrec.FirstLeft = orfl; -} -//------------------------------------------------------------------------------ - -bool Clipper::ExecuteInternal() -{ - bool succeeded = true; - try { - Reset(); - m_Maxima = MaximaList(); - m_SortedEdges = 0; - - succeeded = true; - cInt botY, topY; - if (!PopScanbeam(botY)) return false; - InsertLocalMinimaIntoAEL(botY); - while (PopScanbeam(topY) || LocalMinimaPending()) - { - ProcessHorizontals(); - ClearGhostJoins(); - if (!ProcessIntersections(topY)) - { - succeeded = false; - break; - } - ProcessEdgesAtTopOfScanbeam(topY); - botY = topY; - InsertLocalMinimaIntoAEL(botY); - } - } - catch(...) - { - succeeded = false; - } - - if (succeeded) - { - //fix orientations ... - for (PolyOutList::size_type i = 0; i < m_PolyOuts.size(); ++i) - { - OutRec *outRec = m_PolyOuts[i]; - if (!outRec->Pts || outRec->IsOpen) continue; - if ((outRec->IsHole ^ m_ReverseOutput) == (Area(*outRec) > 0)) - ReversePolyPtLinks(outRec->Pts); - } - - if (!m_Joins.empty()) JoinCommonEdges(); - - //unfortunately FixupOutPolygon() must be done after JoinCommonEdges() - for (PolyOutList::size_type i = 0; i < m_PolyOuts.size(); ++i) - { - OutRec *outRec = m_PolyOuts[i]; - if (!outRec->Pts) continue; - if (outRec->IsOpen) - FixupOutPolyline(*outRec); - else - FixupOutPolygon(*outRec); - } - - if (m_StrictSimple) DoSimplePolygons(); - } - - ClearJoins(); - ClearGhostJoins(); - return succeeded; -} -//------------------------------------------------------------------------------ - -void Clipper::SetWindingCount(TEdge &edge) -{ - TEdge *e = edge.PrevInAEL; - //find the edge of the same polytype that immediately preceeds 'edge' in AEL - while (e && ((e->PolyTyp != edge.PolyTyp) || (e->WindDelta == 0))) e = e->PrevInAEL; - if (!e) - { - if (edge.WindDelta == 0) - { - PolyFillType pft = (edge.PolyTyp == ptSubject ? m_SubjFillType : m_ClipFillType); - edge.WindCnt = (pft == pftNegative ? -1 : 1); - } - else - edge.WindCnt = edge.WindDelta; - edge.WindCnt2 = 0; - e = m_ActiveEdges; //ie get ready to calc WindCnt2 - } - else if (edge.WindDelta == 0 && m_ClipType != ctUnion) - { - edge.WindCnt = 1; - edge.WindCnt2 = e->WindCnt2; - e = e->NextInAEL; //ie get ready to calc WindCnt2 - } - else if (IsEvenOddFillType(edge)) - { - //EvenOdd filling ... - if (edge.WindDelta == 0) - { - //are we inside a subj polygon ... - bool Inside = true; - TEdge *e2 = e->PrevInAEL; - while (e2) - { - if (e2->PolyTyp == e->PolyTyp && e2->WindDelta != 0) - Inside = !Inside; - e2 = e2->PrevInAEL; - } - edge.WindCnt = (Inside ? 0 : 1); - } - else - { - edge.WindCnt = edge.WindDelta; - } - edge.WindCnt2 = e->WindCnt2; - e = e->NextInAEL; //ie get ready to calc WindCnt2 - } - else - { - //nonZero, Positive or Negative filling ... - if (e->WindCnt * e->WindDelta < 0) - { - //prev edge is 'decreasing' WindCount (WC) toward zero - //so we're outside the previous polygon ... - if (Abs(e->WindCnt) > 1) - { - //outside prev poly but still inside another. - //when reversing direction of prev poly use the same WC - if (e->WindDelta * edge.WindDelta < 0) edge.WindCnt = e->WindCnt; - //otherwise continue to 'decrease' WC ... - else edge.WindCnt = e->WindCnt + edge.WindDelta; - } - else - //now outside all polys of same polytype so set own WC ... - edge.WindCnt = (edge.WindDelta == 0 ? 1 : edge.WindDelta); - } else - { - //prev edge is 'increasing' WindCount (WC) away from zero - //so we're inside the previous polygon ... - if (edge.WindDelta == 0) - edge.WindCnt = (e->WindCnt < 0 ? e->WindCnt - 1 : e->WindCnt + 1); - //if wind direction is reversing prev then use same WC - else if (e->WindDelta * edge.WindDelta < 0) edge.WindCnt = e->WindCnt; - //otherwise add to WC ... - else edge.WindCnt = e->WindCnt + edge.WindDelta; - } - edge.WindCnt2 = e->WindCnt2; - e = e->NextInAEL; //ie get ready to calc WindCnt2 - } - - //update WindCnt2 ... - if (IsEvenOddAltFillType(edge)) - { - //EvenOdd filling ... - while (e != &edge) - { - if (e->WindDelta != 0) - edge.WindCnt2 = (edge.WindCnt2 == 0 ? 1 : 0); - e = e->NextInAEL; - } - } else - { - //nonZero, Positive or Negative filling ... - while ( e != &edge ) - { - edge.WindCnt2 += e->WindDelta; - e = e->NextInAEL; - } - } -} -//------------------------------------------------------------------------------ - -bool Clipper::IsEvenOddFillType(const TEdge& edge) const -{ - if (edge.PolyTyp == ptSubject) - return m_SubjFillType == pftEvenOdd; else - return m_ClipFillType == pftEvenOdd; -} -//------------------------------------------------------------------------------ - -bool Clipper::IsEvenOddAltFillType(const TEdge& edge) const -{ - if (edge.PolyTyp == ptSubject) - return m_ClipFillType == pftEvenOdd; else - return m_SubjFillType == pftEvenOdd; -} -//------------------------------------------------------------------------------ - -bool Clipper::IsContributing(const TEdge& edge) const -{ - PolyFillType pft, pft2; - if (edge.PolyTyp == ptSubject) - { - pft = m_SubjFillType; - pft2 = m_ClipFillType; - } else - { - pft = m_ClipFillType; - pft2 = m_SubjFillType; - } - - switch(pft) - { - case pftEvenOdd: - //return false if a subj line has been flagged as inside a subj polygon - if (edge.WindDelta == 0 && edge.WindCnt != 1) return false; - break; - case pftNonZero: - if (Abs(edge.WindCnt) != 1) return false; - break; - case pftPositive: - if (edge.WindCnt != 1) return false; - break; - default: //pftNegative - if (edge.WindCnt != -1) return false; - } - - switch(m_ClipType) - { - case ctIntersection: - switch(pft2) - { - case pftEvenOdd: - case pftNonZero: - return (edge.WindCnt2 != 0); - case pftPositive: - return (edge.WindCnt2 > 0); - default: - return (edge.WindCnt2 < 0); - } - break; - case ctUnion: - switch(pft2) - { - case pftEvenOdd: - case pftNonZero: - return (edge.WindCnt2 == 0); - case pftPositive: - return (edge.WindCnt2 <= 0); - default: - return (edge.WindCnt2 >= 0); - } - break; - case ctDifference: - if (edge.PolyTyp == ptSubject) - switch(pft2) - { - case pftEvenOdd: - case pftNonZero: - return (edge.WindCnt2 == 0); - case pftPositive: - return (edge.WindCnt2 <= 0); - default: - return (edge.WindCnt2 >= 0); - } - else - switch(pft2) - { - case pftEvenOdd: - case pftNonZero: - return (edge.WindCnt2 != 0); - case pftPositive: - return (edge.WindCnt2 > 0); - default: - return (edge.WindCnt2 < 0); - } - break; - case ctXor: - if (edge.WindDelta == 0) //XOr always contributing unless open - switch(pft2) - { - case pftEvenOdd: - case pftNonZero: - return (edge.WindCnt2 == 0); - case pftPositive: - return (edge.WindCnt2 <= 0); - default: - return (edge.WindCnt2 >= 0); - } - else - return true; - break; - default: - return true; - } -} -//------------------------------------------------------------------------------ - -OutPt* Clipper::AddLocalMinPoly(TEdge *e1, TEdge *e2, const IntPoint &Pt) -{ - OutPt* result; - TEdge *e, *prevE; - if (IsHorizontal(*e2) || ( e1->Dx > e2->Dx )) - { - result = AddOutPt(e1, Pt); - e2->OutIdx = e1->OutIdx; - e1->Side = esLeft; - e2->Side = esRight; - e = e1; - if (e->PrevInAEL == e2) - prevE = e2->PrevInAEL; - else - prevE = e->PrevInAEL; - } else - { - result = AddOutPt(e2, Pt); - e1->OutIdx = e2->OutIdx; - e1->Side = esRight; - e2->Side = esLeft; - e = e2; - if (e->PrevInAEL == e1) - prevE = e1->PrevInAEL; - else - prevE = e->PrevInAEL; - } - - if (prevE && prevE->OutIdx >= 0 && prevE->Top.Y < Pt.Y && e->Top.Y < Pt.Y) - { - cInt xPrev = TopX(*prevE, Pt.Y); - cInt xE = TopX(*e, Pt.Y); - if (xPrev == xE && (e->WindDelta != 0) && (prevE->WindDelta != 0) && - SlopesEqual(IntPoint(xPrev, Pt.Y), prevE->Top, IntPoint(xE, Pt.Y), e->Top, m_UseFullRange)) - { - OutPt* outPt = AddOutPt(prevE, Pt); - AddJoin(result, outPt, e->Top); - } - } - return result; -} -//------------------------------------------------------------------------------ - -void Clipper::AddLocalMaxPoly(TEdge *e1, TEdge *e2, const IntPoint &Pt) -{ - AddOutPt( e1, Pt ); - if (e2->WindDelta == 0) AddOutPt(e2, Pt); - if( e1->OutIdx == e2->OutIdx ) - { - e1->OutIdx = Unassigned; - e2->OutIdx = Unassigned; - } - else if (e1->OutIdx < e2->OutIdx) - AppendPolygon(e1, e2); - else - AppendPolygon(e2, e1); -} -//------------------------------------------------------------------------------ - -void Clipper::AddEdgeToSEL(TEdge *edge) -{ - //SEL pointers in PEdge are reused to build a list of horizontal edges. - //However, we don't need to worry about order with horizontal edge processing. - if( !m_SortedEdges ) - { - m_SortedEdges = edge; - edge->PrevInSEL = 0; - edge->NextInSEL = 0; - } - else - { - edge->NextInSEL = m_SortedEdges; - edge->PrevInSEL = 0; - m_SortedEdges->PrevInSEL = edge; - m_SortedEdges = edge; - } -} -//------------------------------------------------------------------------------ - -bool Clipper::PopEdgeFromSEL(TEdge *&edge) -{ - if (!m_SortedEdges) return false; - edge = m_SortedEdges; - DeleteFromSEL(m_SortedEdges); - return true; -} -//------------------------------------------------------------------------------ - -void Clipper::CopyAELToSEL() -{ - TEdge* e = m_ActiveEdges; - m_SortedEdges = e; - while ( e ) - { - e->PrevInSEL = e->PrevInAEL; - e->NextInSEL = e->NextInAEL; - e = e->NextInAEL; - } -} -//------------------------------------------------------------------------------ - -void Clipper::AddJoin(OutPt *op1, OutPt *op2, const IntPoint OffPt) -{ - Join* j = new Join; - j->OutPt1 = op1; - j->OutPt2 = op2; - j->OffPt = OffPt; - m_Joins.push_back(j); -} -//------------------------------------------------------------------------------ - -void Clipper::ClearJoins() -{ - for (JoinList::size_type i = 0; i < m_Joins.size(); i++) - delete m_Joins[i]; - m_Joins.resize(0); -} -//------------------------------------------------------------------------------ - -void Clipper::ClearGhostJoins() -{ - for (JoinList::size_type i = 0; i < m_GhostJoins.size(); i++) - delete m_GhostJoins[i]; - m_GhostJoins.resize(0); -} -//------------------------------------------------------------------------------ - -void Clipper::AddGhostJoin(OutPt *op, const IntPoint OffPt) -{ - Join* j = new Join; - j->OutPt1 = op; - j->OutPt2 = 0; - j->OffPt = OffPt; - m_GhostJoins.push_back(j); -} -//------------------------------------------------------------------------------ - -void Clipper::InsertLocalMinimaIntoAEL(const cInt botY) -{ - const LocalMinimum *lm; - while (PopLocalMinima(botY, lm)) - { - TEdge* lb = lm->LeftBound; - TEdge* rb = lm->RightBound; - - OutPt *Op1 = 0; - if (!lb) - { - //nb: don't insert LB into either AEL or SEL - InsertEdgeIntoAEL(rb, 0); - SetWindingCount(*rb); - if (IsContributing(*rb)) - Op1 = AddOutPt(rb, rb->Bot); - } - else if (!rb) - { - InsertEdgeIntoAEL(lb, 0); - SetWindingCount(*lb); - if (IsContributing(*lb)) - Op1 = AddOutPt(lb, lb->Bot); - InsertScanbeam(lb->Top.Y); - } - else - { - InsertEdgeIntoAEL(lb, 0); - InsertEdgeIntoAEL(rb, lb); - SetWindingCount( *lb ); - rb->WindCnt = lb->WindCnt; - rb->WindCnt2 = lb->WindCnt2; - if (IsContributing(*lb)) - Op1 = AddLocalMinPoly(lb, rb, lb->Bot); - InsertScanbeam(lb->Top.Y); - } - - if (rb) - { - if (IsHorizontal(*rb)) - { - AddEdgeToSEL(rb); - if (rb->NextInLML) - InsertScanbeam(rb->NextInLML->Top.Y); - } - else InsertScanbeam( rb->Top.Y ); - } - - if (!lb || !rb) continue; - - //if any output polygons share an edge, they'll need joining later ... - if (Op1 && IsHorizontal(*rb) && - m_GhostJoins.size() > 0 && (rb->WindDelta != 0)) - { - for (JoinList::size_type i = 0; i < m_GhostJoins.size(); ++i) - { - Join* jr = m_GhostJoins[i]; - //if the horizontal Rb and a 'ghost' horizontal overlap, then convert - //the 'ghost' join to a real join ready for later ... - if (HorzSegmentsOverlap(jr->OutPt1->Pt.X, jr->OffPt.X, rb->Bot.X, rb->Top.X)) - AddJoin(jr->OutPt1, Op1, jr->OffPt); - } - } - - if (lb->OutIdx >= 0 && lb->PrevInAEL && - lb->PrevInAEL->Curr.X == lb->Bot.X && - lb->PrevInAEL->OutIdx >= 0 && - SlopesEqual(lb->PrevInAEL->Bot, lb->PrevInAEL->Top, lb->Curr, lb->Top, m_UseFullRange) && - (lb->WindDelta != 0) && (lb->PrevInAEL->WindDelta != 0)) - { - OutPt *Op2 = AddOutPt(lb->PrevInAEL, lb->Bot); - AddJoin(Op1, Op2, lb->Top); - } - - if(lb->NextInAEL != rb) - { - - if (rb->OutIdx >= 0 && rb->PrevInAEL->OutIdx >= 0 && - SlopesEqual(rb->PrevInAEL->Curr, rb->PrevInAEL->Top, rb->Curr, rb->Top, m_UseFullRange) && - (rb->WindDelta != 0) && (rb->PrevInAEL->WindDelta != 0)) - { - OutPt *Op2 = AddOutPt(rb->PrevInAEL, rb->Bot); - AddJoin(Op1, Op2, rb->Top); - } - - TEdge* e = lb->NextInAEL; - if (e) - { - while( e != rb ) - { - //nb: For calculating winding counts etc, IntersectEdges() assumes - //that param1 will be to the Right of param2 ABOVE the intersection ... - IntersectEdges(rb , e , lb->Curr); //order important here - e = e->NextInAEL; - } - } - } - - } -} -//------------------------------------------------------------------------------ - -void Clipper::DeleteFromSEL(TEdge *e) -{ - TEdge* SelPrev = e->PrevInSEL; - TEdge* SelNext = e->NextInSEL; - if( !SelPrev && !SelNext && (e != m_SortedEdges) ) return; //already deleted - if( SelPrev ) SelPrev->NextInSEL = SelNext; - else m_SortedEdges = SelNext; - if( SelNext ) SelNext->PrevInSEL = SelPrev; - e->NextInSEL = 0; - e->PrevInSEL = 0; -} -//------------------------------------------------------------------------------ - -#ifdef use_xyz -void Clipper::SetZ(IntPoint& pt, TEdge& e1, TEdge& e2) -{ - if (pt.Z != 0 || !m_ZFill) return; - else if (pt == e1.Bot) pt.Z = e1.Bot.Z; - else if (pt == e1.Top) pt.Z = e1.Top.Z; - else if (pt == e2.Bot) pt.Z = e2.Bot.Z; - else if (pt == e2.Top) pt.Z = e2.Top.Z; - else (*m_ZFill)(e1.Bot, e1.Top, e2.Bot, e2.Top, pt); -} -//------------------------------------------------------------------------------ -#endif - -void Clipper::IntersectEdges(TEdge *e1, TEdge *e2, IntPoint &Pt) -{ - bool e1Contributing = ( e1->OutIdx >= 0 ); - bool e2Contributing = ( e2->OutIdx >= 0 ); - -#ifdef use_xyz - SetZ(Pt, *e1, *e2); -#endif - -#ifdef use_lines - //if either edge is on an OPEN path ... - if (e1->WindDelta == 0 || e2->WindDelta == 0) - { - //ignore subject-subject open path intersections UNLESS they - //are both open paths, AND they are both 'contributing maximas' ... - if (e1->WindDelta == 0 && e2->WindDelta == 0) return; - - //if intersecting a subj line with a subj poly ... - else if (e1->PolyTyp == e2->PolyTyp && - e1->WindDelta != e2->WindDelta && m_ClipType == ctUnion) - { - if (e1->WindDelta == 0) - { - if (e2Contributing) - { - AddOutPt(e1, Pt); - if (e1Contributing) e1->OutIdx = Unassigned; - } - } - else - { - if (e1Contributing) - { - AddOutPt(e2, Pt); - if (e2Contributing) e2->OutIdx = Unassigned; - } - } - } - else if (e1->PolyTyp != e2->PolyTyp) - { - //toggle subj open path OutIdx on/off when Abs(clip.WndCnt) == 1 ... - if ((e1->WindDelta == 0) && abs(e2->WindCnt) == 1 && - (m_ClipType != ctUnion || e2->WindCnt2 == 0)) - { - AddOutPt(e1, Pt); - if (e1Contributing) e1->OutIdx = Unassigned; - } - else if ((e2->WindDelta == 0) && (abs(e1->WindCnt) == 1) && - (m_ClipType != ctUnion || e1->WindCnt2 == 0)) - { - AddOutPt(e2, Pt); - if (e2Contributing) e2->OutIdx = Unassigned; - } - } - return; - } -#endif - - //update winding counts... - //assumes that e1 will be to the Right of e2 ABOVE the intersection - if ( e1->PolyTyp == e2->PolyTyp ) - { - if ( IsEvenOddFillType( *e1) ) - { - int oldE1WindCnt = e1->WindCnt; - e1->WindCnt = e2->WindCnt; - e2->WindCnt = oldE1WindCnt; - } else - { - if (e1->WindCnt + e2->WindDelta == 0 ) e1->WindCnt = -e1->WindCnt; - else e1->WindCnt += e2->WindDelta; - if ( e2->WindCnt - e1->WindDelta == 0 ) e2->WindCnt = -e2->WindCnt; - else e2->WindCnt -= e1->WindDelta; - } - } else - { - if (!IsEvenOddFillType(*e2)) e1->WindCnt2 += e2->WindDelta; - else e1->WindCnt2 = ( e1->WindCnt2 == 0 ) ? 1 : 0; - if (!IsEvenOddFillType(*e1)) e2->WindCnt2 -= e1->WindDelta; - else e2->WindCnt2 = ( e2->WindCnt2 == 0 ) ? 1 : 0; - } - - PolyFillType e1FillType, e2FillType, e1FillType2, e2FillType2; - if (e1->PolyTyp == ptSubject) - { - e1FillType = m_SubjFillType; - e1FillType2 = m_ClipFillType; - } else - { - e1FillType = m_ClipFillType; - e1FillType2 = m_SubjFillType; - } - if (e2->PolyTyp == ptSubject) - { - e2FillType = m_SubjFillType; - e2FillType2 = m_ClipFillType; - } else - { - e2FillType = m_ClipFillType; - e2FillType2 = m_SubjFillType; - } - - cInt e1Wc, e2Wc; - switch (e1FillType) - { - case pftPositive: e1Wc = e1->WindCnt; break; - case pftNegative: e1Wc = -e1->WindCnt; break; - default: e1Wc = Abs(e1->WindCnt); - } - switch(e2FillType) - { - case pftPositive: e2Wc = e2->WindCnt; break; - case pftNegative: e2Wc = -e2->WindCnt; break; - default: e2Wc = Abs(e2->WindCnt); - } - - if ( e1Contributing && e2Contributing ) - { - if ((e1Wc != 0 && e1Wc != 1) || (e2Wc != 0 && e2Wc != 1) || - (e1->PolyTyp != e2->PolyTyp && m_ClipType != ctXor) ) - { - AddLocalMaxPoly(e1, e2, Pt); - } - else - { - AddOutPt(e1, Pt); - AddOutPt(e2, Pt); - SwapSides( *e1 , *e2 ); - SwapPolyIndexes( *e1 , *e2 ); - } - } - else if ( e1Contributing ) - { - if (e2Wc == 0 || e2Wc == 1) - { - AddOutPt(e1, Pt); - SwapSides(*e1, *e2); - SwapPolyIndexes(*e1, *e2); - } - } - else if ( e2Contributing ) - { - if (e1Wc == 0 || e1Wc == 1) - { - AddOutPt(e2, Pt); - SwapSides(*e1, *e2); - SwapPolyIndexes(*e1, *e2); - } - } - else if ( (e1Wc == 0 || e1Wc == 1) && (e2Wc == 0 || e2Wc == 1)) - { - //neither edge is currently contributing ... - - cInt e1Wc2, e2Wc2; - switch (e1FillType2) - { - case pftPositive: e1Wc2 = e1->WindCnt2; break; - case pftNegative : e1Wc2 = -e1->WindCnt2; break; - default: e1Wc2 = Abs(e1->WindCnt2); - } - switch (e2FillType2) - { - case pftPositive: e2Wc2 = e2->WindCnt2; break; - case pftNegative: e2Wc2 = -e2->WindCnt2; break; - default: e2Wc2 = Abs(e2->WindCnt2); - } - - if (e1->PolyTyp != e2->PolyTyp) - { - AddLocalMinPoly(e1, e2, Pt); - } - else if (e1Wc == 1 && e2Wc == 1) - switch( m_ClipType ) { - case ctIntersection: - if (e1Wc2 > 0 && e2Wc2 > 0) - AddLocalMinPoly(e1, e2, Pt); - break; - case ctUnion: - if ( e1Wc2 <= 0 && e2Wc2 <= 0 ) - AddLocalMinPoly(e1, e2, Pt); - break; - case ctDifference: - if (((e1->PolyTyp == ptClip) && (e1Wc2 > 0) && (e2Wc2 > 0)) || - ((e1->PolyTyp == ptSubject) && (e1Wc2 <= 0) && (e2Wc2 <= 0))) - AddLocalMinPoly(e1, e2, Pt); - break; - case ctXor: - AddLocalMinPoly(e1, e2, Pt); - } - else - SwapSides( *e1, *e2 ); - } -} -//------------------------------------------------------------------------------ - -void Clipper::SetHoleState(TEdge *e, OutRec *outrec) -{ - TEdge *e2 = e->PrevInAEL; - TEdge *eTmp = 0; - while (e2) - { - if (e2->OutIdx >= 0 && e2->WindDelta != 0) - { - if (!eTmp) eTmp = e2; - else if (eTmp->OutIdx == e2->OutIdx) eTmp = 0; - } - e2 = e2->PrevInAEL; - } - if (!eTmp) - { - outrec->FirstLeft = 0; - outrec->IsHole = false; - } - else - { - outrec->FirstLeft = m_PolyOuts[eTmp->OutIdx]; - outrec->IsHole = !outrec->FirstLeft->IsHole; - } -} -//------------------------------------------------------------------------------ - -OutRec* GetLowermostRec(OutRec *outRec1, OutRec *outRec2) -{ - //work out which polygon fragment has the correct hole state ... - if (!outRec1->BottomPt) - outRec1->BottomPt = GetBottomPt(outRec1->Pts); - if (!outRec2->BottomPt) - outRec2->BottomPt = GetBottomPt(outRec2->Pts); - OutPt *OutPt1 = outRec1->BottomPt; - OutPt *OutPt2 = outRec2->BottomPt; - if (OutPt1->Pt.Y > OutPt2->Pt.Y) return outRec1; - else if (OutPt1->Pt.Y < OutPt2->Pt.Y) return outRec2; - else if (OutPt1->Pt.X < OutPt2->Pt.X) return outRec1; - else if (OutPt1->Pt.X > OutPt2->Pt.X) return outRec2; - else if (OutPt1->Next == OutPt1) return outRec2; - else if (OutPt2->Next == OutPt2) return outRec1; - else if (FirstIsBottomPt(OutPt1, OutPt2)) return outRec1; - else return outRec2; -} -//------------------------------------------------------------------------------ - -bool OutRec1RightOfOutRec2(OutRec* outRec1, OutRec* outRec2) -{ - do - { - outRec1 = outRec1->FirstLeft; - if (outRec1 == outRec2) return true; - } while (outRec1); - return false; -} -//------------------------------------------------------------------------------ - -OutRec* Clipper::GetOutRec(int Idx) -{ - OutRec* outrec = m_PolyOuts[Idx]; - while (outrec != m_PolyOuts[outrec->Idx]) - outrec = m_PolyOuts[outrec->Idx]; - return outrec; -} -//------------------------------------------------------------------------------ - -void Clipper::AppendPolygon(TEdge *e1, TEdge *e2) -{ - //get the start and ends of both output polygons ... - OutRec *outRec1 = m_PolyOuts[e1->OutIdx]; - OutRec *outRec2 = m_PolyOuts[e2->OutIdx]; - - OutRec *holeStateRec; - if (OutRec1RightOfOutRec2(outRec1, outRec2)) - holeStateRec = outRec2; - else if (OutRec1RightOfOutRec2(outRec2, outRec1)) - holeStateRec = outRec1; - else - holeStateRec = GetLowermostRec(outRec1, outRec2); - - //get the start and ends of both output polygons and - //join e2 poly onto e1 poly and delete pointers to e2 ... - - OutPt* p1_lft = outRec1->Pts; - OutPt* p1_rt = p1_lft->Prev; - OutPt* p2_lft = outRec2->Pts; - OutPt* p2_rt = p2_lft->Prev; - - //join e2 poly onto e1 poly and delete pointers to e2 ... - if( e1->Side == esLeft ) - { - if( e2->Side == esLeft ) - { - //z y x a b c - ReversePolyPtLinks(p2_lft); - p2_lft->Next = p1_lft; - p1_lft->Prev = p2_lft; - p1_rt->Next = p2_rt; - p2_rt->Prev = p1_rt; - outRec1->Pts = p2_rt; - } else - { - //x y z a b c - p2_rt->Next = p1_lft; - p1_lft->Prev = p2_rt; - p2_lft->Prev = p1_rt; - p1_rt->Next = p2_lft; - outRec1->Pts = p2_lft; - } - } else - { - if( e2->Side == esRight ) - { - //a b c z y x - ReversePolyPtLinks(p2_lft); - p1_rt->Next = p2_rt; - p2_rt->Prev = p1_rt; - p2_lft->Next = p1_lft; - p1_lft->Prev = p2_lft; - } else - { - //a b c x y z - p1_rt->Next = p2_lft; - p2_lft->Prev = p1_rt; - p1_lft->Prev = p2_rt; - p2_rt->Next = p1_lft; - } - } - - outRec1->BottomPt = 0; - if (holeStateRec == outRec2) - { - if (outRec2->FirstLeft != outRec1) - outRec1->FirstLeft = outRec2->FirstLeft; - outRec1->IsHole = outRec2->IsHole; - } - outRec2->Pts = 0; - outRec2->BottomPt = 0; - outRec2->FirstLeft = outRec1; - - int OKIdx = e1->OutIdx; - int ObsoleteIdx = e2->OutIdx; - - e1->OutIdx = Unassigned; //nb: safe because we only get here via AddLocalMaxPoly - e2->OutIdx = Unassigned; - - TEdge* e = m_ActiveEdges; - while( e ) - { - if( e->OutIdx == ObsoleteIdx ) - { - e->OutIdx = OKIdx; - e->Side = e1->Side; - break; - } - e = e->NextInAEL; - } - - outRec2->Idx = outRec1->Idx; -} -//------------------------------------------------------------------------------ - -OutPt* Clipper::AddOutPt(TEdge *e, const IntPoint &pt) -{ - if( e->OutIdx < 0 ) - { - OutRec *outRec = CreateOutRec(); - outRec->IsOpen = (e->WindDelta == 0); - OutPt* newOp = new OutPt; - outRec->Pts = newOp; - newOp->Idx = outRec->Idx; - newOp->Pt = pt; - newOp->Next = newOp; - newOp->Prev = newOp; - if (!outRec->IsOpen) - SetHoleState(e, outRec); - e->OutIdx = outRec->Idx; - return newOp; - } else - { - OutRec *outRec = m_PolyOuts[e->OutIdx]; - //OutRec.Pts is the 'Left-most' point & OutRec.Pts.Prev is the 'Right-most' - OutPt* op = outRec->Pts; - - bool ToFront = (e->Side == esLeft); - if (ToFront && (pt == op->Pt)) return op; - else if (!ToFront && (pt == op->Prev->Pt)) return op->Prev; - - OutPt* newOp = new OutPt; - newOp->Idx = outRec->Idx; - newOp->Pt = pt; - newOp->Next = op; - newOp->Prev = op->Prev; - newOp->Prev->Next = newOp; - op->Prev = newOp; - if (ToFront) outRec->Pts = newOp; - return newOp; - } -} -//------------------------------------------------------------------------------ - -OutPt* Clipper::GetLastOutPt(TEdge *e) -{ - OutRec *outRec = m_PolyOuts[e->OutIdx]; - if (e->Side == esLeft) - return outRec->Pts; - else - return outRec->Pts->Prev; -} -//------------------------------------------------------------------------------ - -void Clipper::ProcessHorizontals() -{ - TEdge* horzEdge; - while (PopEdgeFromSEL(horzEdge)) - ProcessHorizontal(horzEdge); -} -//------------------------------------------------------------------------------ - -inline bool IsMinima(TEdge *e) -{ - return e && (e->Prev->NextInLML != e) && (e->Next->NextInLML != e); -} -//------------------------------------------------------------------------------ - -inline bool IsMaxima(TEdge *e, const cInt Y) -{ - return e && e->Top.Y == Y && !e->NextInLML; -} -//------------------------------------------------------------------------------ - -inline bool IsIntermediate(TEdge *e, const cInt Y) -{ - return e->Top.Y == Y && e->NextInLML; -} -//------------------------------------------------------------------------------ - -TEdge *GetMaximaPair(TEdge *e) -{ - if ((e->Next->Top == e->Top) && !e->Next->NextInLML) - return e->Next; - else if ((e->Prev->Top == e->Top) && !e->Prev->NextInLML) - return e->Prev; - else return 0; -} -//------------------------------------------------------------------------------ - -TEdge *GetMaximaPairEx(TEdge *e) -{ - //as GetMaximaPair() but returns 0 if MaxPair isn't in AEL (unless it's horizontal) - TEdge* result = GetMaximaPair(e); - if (result && (result->OutIdx == Skip || - (result->NextInAEL == result->PrevInAEL && !IsHorizontal(*result)))) return 0; - return result; -} -//------------------------------------------------------------------------------ - -void Clipper::SwapPositionsInSEL(TEdge *Edge1, TEdge *Edge2) -{ - if( !( Edge1->NextInSEL ) && !( Edge1->PrevInSEL ) ) return; - if( !( Edge2->NextInSEL ) && !( Edge2->PrevInSEL ) ) return; - - if( Edge1->NextInSEL == Edge2 ) - { - TEdge* Next = Edge2->NextInSEL; - if( Next ) Next->PrevInSEL = Edge1; - TEdge* Prev = Edge1->PrevInSEL; - if( Prev ) Prev->NextInSEL = Edge2; - Edge2->PrevInSEL = Prev; - Edge2->NextInSEL = Edge1; - Edge1->PrevInSEL = Edge2; - Edge1->NextInSEL = Next; - } - else if( Edge2->NextInSEL == Edge1 ) - { - TEdge* Next = Edge1->NextInSEL; - if( Next ) Next->PrevInSEL = Edge2; - TEdge* Prev = Edge2->PrevInSEL; - if( Prev ) Prev->NextInSEL = Edge1; - Edge1->PrevInSEL = Prev; - Edge1->NextInSEL = Edge2; - Edge2->PrevInSEL = Edge1; - Edge2->NextInSEL = Next; - } - else - { - TEdge* Next = Edge1->NextInSEL; - TEdge* Prev = Edge1->PrevInSEL; - Edge1->NextInSEL = Edge2->NextInSEL; - if( Edge1->NextInSEL ) Edge1->NextInSEL->PrevInSEL = Edge1; - Edge1->PrevInSEL = Edge2->PrevInSEL; - if( Edge1->PrevInSEL ) Edge1->PrevInSEL->NextInSEL = Edge1; - Edge2->NextInSEL = Next; - if( Edge2->NextInSEL ) Edge2->NextInSEL->PrevInSEL = Edge2; - Edge2->PrevInSEL = Prev; - if( Edge2->PrevInSEL ) Edge2->PrevInSEL->NextInSEL = Edge2; - } - - if( !Edge1->PrevInSEL ) m_SortedEdges = Edge1; - else if( !Edge2->PrevInSEL ) m_SortedEdges = Edge2; -} -//------------------------------------------------------------------------------ - -TEdge* GetNextInAEL(TEdge *e, Direction dir) -{ - return dir == dLeftToRight ? e->NextInAEL : e->PrevInAEL; -} -//------------------------------------------------------------------------------ - -void GetHorzDirection(TEdge& HorzEdge, Direction& Dir, cInt& Left, cInt& Right) -{ - if (HorzEdge.Bot.X < HorzEdge.Top.X) - { - Left = HorzEdge.Bot.X; - Right = HorzEdge.Top.X; - Dir = dLeftToRight; - } else - { - Left = HorzEdge.Top.X; - Right = HorzEdge.Bot.X; - Dir = dRightToLeft; - } -} -//------------------------------------------------------------------------ - -/******************************************************************************* -* Notes: Horizontal edges (HEs) at scanline intersections (ie at the Top or * -* Bottom of a scanbeam) are processed as if layered. The order in which HEs * -* are processed doesn't matter. HEs intersect with other HE Bot.Xs only [#] * -* (or they could intersect with Top.Xs only, ie EITHER Bot.Xs OR Top.Xs), * -* and with other non-horizontal edges [*]. Once these intersections are * -* processed, intermediate HEs then 'promote' the Edge above (NextInLML) into * -* the AEL. These 'promoted' edges may in turn intersect [%] with other HEs. * -*******************************************************************************/ - -void Clipper::ProcessHorizontal(TEdge *horzEdge) -{ - Direction dir; - cInt horzLeft, horzRight; - bool IsOpen = (horzEdge->WindDelta == 0); - - GetHorzDirection(*horzEdge, dir, horzLeft, horzRight); - - TEdge* eLastHorz = horzEdge, *eMaxPair = 0; - while (eLastHorz->NextInLML && IsHorizontal(*eLastHorz->NextInLML)) - eLastHorz = eLastHorz->NextInLML; - if (!eLastHorz->NextInLML) - eMaxPair = GetMaximaPair(eLastHorz); - - MaximaList::const_iterator maxIt; - MaximaList::const_reverse_iterator maxRit; - if (m_Maxima.size() > 0) - { - //get the first maxima in range (X) ... - if (dir == dLeftToRight) - { - maxIt = m_Maxima.begin(); - while (maxIt != m_Maxima.end() && *maxIt <= horzEdge->Bot.X) maxIt++; - if (maxIt != m_Maxima.end() && *maxIt >= eLastHorz->Top.X) - maxIt = m_Maxima.end(); - } - else - { - maxRit = m_Maxima.rbegin(); - while (maxRit != m_Maxima.rend() && *maxRit > horzEdge->Bot.X) maxRit++; - if (maxRit != m_Maxima.rend() && *maxRit <= eLastHorz->Top.X) - maxRit = m_Maxima.rend(); - } - } - - OutPt* op1 = 0; - - for (;;) //loop through consec. horizontal edges - { - - bool IsLastHorz = (horzEdge == eLastHorz); - TEdge* e = GetNextInAEL(horzEdge, dir); - while(e) - { - - //this code block inserts extra coords into horizontal edges (in output - //polygons) whereever maxima touch these horizontal edges. This helps - //'simplifying' polygons (ie if the Simplify property is set). - if (m_Maxima.size() > 0) - { - if (dir == dLeftToRight) - { - while (maxIt != m_Maxima.end() && *maxIt < e->Curr.X) - { - if (horzEdge->OutIdx >= 0 && !IsOpen) - AddOutPt(horzEdge, IntPoint(*maxIt, horzEdge->Bot.Y)); - maxIt++; - } - } - else - { - while (maxRit != m_Maxima.rend() && *maxRit > e->Curr.X) - { - if (horzEdge->OutIdx >= 0 && !IsOpen) - AddOutPt(horzEdge, IntPoint(*maxRit, horzEdge->Bot.Y)); - maxRit++; - } - } - }; - - if ((dir == dLeftToRight && e->Curr.X > horzRight) || - (dir == dRightToLeft && e->Curr.X < horzLeft)) break; - - //Also break if we've got to the end of an intermediate horizontal edge ... - //nb: Smaller Dx's are to the right of larger Dx's ABOVE the horizontal. - if (e->Curr.X == horzEdge->Top.X && horzEdge->NextInLML && - e->Dx < horzEdge->NextInLML->Dx) break; - - if (horzEdge->OutIdx >= 0 && !IsOpen) //note: may be done multiple times - { -#ifdef use_xyz - if (dir == dLeftToRight) SetZ(e->Curr, *horzEdge, *e); - else SetZ(e->Curr, *e, *horzEdge); -#endif - op1 = AddOutPt(horzEdge, e->Curr); - TEdge* eNextHorz = m_SortedEdges; - while (eNextHorz) - { - if (eNextHorz->OutIdx >= 0 && - HorzSegmentsOverlap(horzEdge->Bot.X, - horzEdge->Top.X, eNextHorz->Bot.X, eNextHorz->Top.X)) - { - OutPt* op2 = GetLastOutPt(eNextHorz); - AddJoin(op2, op1, eNextHorz->Top); - } - eNextHorz = eNextHorz->NextInSEL; - } - AddGhostJoin(op1, horzEdge->Bot); - } - - //OK, so far we're still in range of the horizontal Edge but make sure - //we're at the last of consec. horizontals when matching with eMaxPair - if(e == eMaxPair && IsLastHorz) - { - if (horzEdge->OutIdx >= 0) - AddLocalMaxPoly(horzEdge, eMaxPair, horzEdge->Top); - DeleteFromAEL(horzEdge); - DeleteFromAEL(eMaxPair); - return; - } - - if(dir == dLeftToRight) - { - IntPoint Pt = IntPoint(e->Curr.X, horzEdge->Curr.Y); - IntersectEdges(horzEdge, e, Pt); - } - else - { - IntPoint Pt = IntPoint(e->Curr.X, horzEdge->Curr.Y); - IntersectEdges( e, horzEdge, Pt); - } - TEdge* eNext = GetNextInAEL(e, dir); - SwapPositionsInAEL( horzEdge, e ); - e = eNext; - } //end while(e) - - //Break out of loop if HorzEdge.NextInLML is not also horizontal ... - if (!horzEdge->NextInLML || !IsHorizontal(*horzEdge->NextInLML)) break; - - UpdateEdgeIntoAEL(horzEdge); - if (horzEdge->OutIdx >= 0) AddOutPt(horzEdge, horzEdge->Bot); - GetHorzDirection(*horzEdge, dir, horzLeft, horzRight); - - } //end for (;;) - - if (horzEdge->OutIdx >= 0 && !op1) - { - op1 = GetLastOutPt(horzEdge); - TEdge* eNextHorz = m_SortedEdges; - while (eNextHorz) - { - if (eNextHorz->OutIdx >= 0 && - HorzSegmentsOverlap(horzEdge->Bot.X, - horzEdge->Top.X, eNextHorz->Bot.X, eNextHorz->Top.X)) - { - OutPt* op2 = GetLastOutPt(eNextHorz); - AddJoin(op2, op1, eNextHorz->Top); - } - eNextHorz = eNextHorz->NextInSEL; - } - AddGhostJoin(op1, horzEdge->Top); - } - - if (horzEdge->NextInLML) - { - if(horzEdge->OutIdx >= 0) - { - op1 = AddOutPt( horzEdge, horzEdge->Top); - UpdateEdgeIntoAEL(horzEdge); - if (horzEdge->WindDelta == 0) return; - //nb: HorzEdge is no longer horizontal here - TEdge* ePrev = horzEdge->PrevInAEL; - TEdge* eNext = horzEdge->NextInAEL; - if (ePrev && ePrev->Curr.X == horzEdge->Bot.X && - ePrev->Curr.Y == horzEdge->Bot.Y && ePrev->WindDelta != 0 && - (ePrev->OutIdx >= 0 && ePrev->Curr.Y > ePrev->Top.Y && - SlopesEqual(*horzEdge, *ePrev, m_UseFullRange))) - { - OutPt* op2 = AddOutPt(ePrev, horzEdge->Bot); - AddJoin(op1, op2, horzEdge->Top); - } - else if (eNext && eNext->Curr.X == horzEdge->Bot.X && - eNext->Curr.Y == horzEdge->Bot.Y && eNext->WindDelta != 0 && - eNext->OutIdx >= 0 && eNext->Curr.Y > eNext->Top.Y && - SlopesEqual(*horzEdge, *eNext, m_UseFullRange)) - { - OutPt* op2 = AddOutPt(eNext, horzEdge->Bot); - AddJoin(op1, op2, horzEdge->Top); - } - } - else - UpdateEdgeIntoAEL(horzEdge); - } - else - { - if (horzEdge->OutIdx >= 0) AddOutPt(horzEdge, horzEdge->Top); - DeleteFromAEL(horzEdge); - } -} -//------------------------------------------------------------------------------ - -bool Clipper::ProcessIntersections(const cInt topY) -{ - if( !m_ActiveEdges ) return true; - try { - BuildIntersectList(topY); - size_t IlSize = m_IntersectList.size(); - if (IlSize == 0) return true; - if (IlSize == 1 || FixupIntersectionOrder()) ProcessIntersectList(); - else return false; - } - catch(...) - { - m_SortedEdges = 0; - DisposeIntersectNodes(); - throw clipperException("ProcessIntersections error"); - } - m_SortedEdges = 0; - return true; -} -//------------------------------------------------------------------------------ - -void Clipper::DisposeIntersectNodes() -{ - for (size_t i = 0; i < m_IntersectList.size(); ++i ) - delete m_IntersectList[i]; - m_IntersectList.clear(); -} -//------------------------------------------------------------------------------ - -void Clipper::BuildIntersectList(const cInt topY) -{ - if ( !m_ActiveEdges ) return; - - //prepare for sorting ... - TEdge* e = m_ActiveEdges; - m_SortedEdges = e; - while( e ) - { - e->PrevInSEL = e->PrevInAEL; - e->NextInSEL = e->NextInAEL; - e->Curr.X = TopX( *e, topY ); - e = e->NextInAEL; - } - - //bubblesort ... - bool isModified; - do - { - isModified = false; - e = m_SortedEdges; - while( e->NextInSEL ) - { - TEdge *eNext = e->NextInSEL; - IntPoint Pt; - if(e->Curr.X > eNext->Curr.X) - { - IntersectPoint(*e, *eNext, Pt); - if (Pt.Y < topY) Pt = IntPoint(TopX(*e, topY), topY); - IntersectNode * newNode = new IntersectNode; - newNode->Edge1 = e; - newNode->Edge2 = eNext; - newNode->Pt = Pt; - m_IntersectList.push_back(newNode); - - SwapPositionsInSEL(e, eNext); - isModified = true; - } - else - e = eNext; - } - if( e->PrevInSEL ) e->PrevInSEL->NextInSEL = 0; - else break; - } - while ( isModified ); - m_SortedEdges = 0; //important -} -//------------------------------------------------------------------------------ - - -void Clipper::ProcessIntersectList() -{ - for (size_t i = 0; i < m_IntersectList.size(); ++i) - { - IntersectNode* iNode = m_IntersectList[i]; - { - IntersectEdges( iNode->Edge1, iNode->Edge2, iNode->Pt); - SwapPositionsInAEL( iNode->Edge1 , iNode->Edge2 ); - } - delete iNode; - } - m_IntersectList.clear(); -} -//------------------------------------------------------------------------------ - -bool IntersectListSort(IntersectNode* node1, IntersectNode* node2) -{ - return node2->Pt.Y < node1->Pt.Y; -} -//------------------------------------------------------------------------------ - -inline bool EdgesAdjacent(const IntersectNode &inode) -{ - return (inode.Edge1->NextInSEL == inode.Edge2) || - (inode.Edge1->PrevInSEL == inode.Edge2); -} -//------------------------------------------------------------------------------ - -bool Clipper::FixupIntersectionOrder() -{ - //pre-condition: intersections are sorted Bottom-most first. - //Now it's crucial that intersections are made only between adjacent edges, - //so to ensure this the order of intersections may need adjusting ... - CopyAELToSEL(); - std::sort(m_IntersectList.begin(), m_IntersectList.end(), IntersectListSort); - size_t cnt = m_IntersectList.size(); - for (size_t i = 0; i < cnt; ++i) - { - if (!EdgesAdjacent(*m_IntersectList[i])) - { - size_t j = i + 1; - while (j < cnt && !EdgesAdjacent(*m_IntersectList[j])) j++; - if (j == cnt) return false; - std::swap(m_IntersectList[i], m_IntersectList[j]); - } - SwapPositionsInSEL(m_IntersectList[i]->Edge1, m_IntersectList[i]->Edge2); - } - return true; -} -//------------------------------------------------------------------------------ - -void Clipper::DoMaxima(TEdge *e) -{ - TEdge* eMaxPair = GetMaximaPairEx(e); - if (!eMaxPair) - { - if (e->OutIdx >= 0) - AddOutPt(e, e->Top); - DeleteFromAEL(e); - return; - } - - TEdge* eNext = e->NextInAEL; - while(eNext && eNext != eMaxPair) - { - IntersectEdges(e, eNext, e->Top); - SwapPositionsInAEL(e, eNext); - eNext = e->NextInAEL; - } - - if(e->OutIdx == Unassigned && eMaxPair->OutIdx == Unassigned) - { - DeleteFromAEL(e); - DeleteFromAEL(eMaxPair); - } - else if( e->OutIdx >= 0 && eMaxPair->OutIdx >= 0 ) - { - if (e->OutIdx >= 0) AddLocalMaxPoly(e, eMaxPair, e->Top); - DeleteFromAEL(e); - DeleteFromAEL(eMaxPair); - } -#ifdef use_lines - else if (e->WindDelta == 0) - { - if (e->OutIdx >= 0) - { - AddOutPt(e, e->Top); - e->OutIdx = Unassigned; - } - DeleteFromAEL(e); - - if (eMaxPair->OutIdx >= 0) - { - AddOutPt(eMaxPair, e->Top); - eMaxPair->OutIdx = Unassigned; - } - DeleteFromAEL(eMaxPair); - } -#endif - else throw clipperException("DoMaxima error"); -} -//------------------------------------------------------------------------------ - -void Clipper::ProcessEdgesAtTopOfScanbeam(const cInt topY) -{ - TEdge* e = m_ActiveEdges; - while( e ) - { - //1. process maxima, treating them as if they're 'bent' horizontal edges, - // but exclude maxima with horizontal edges. nb: e can't be a horizontal. - bool IsMaximaEdge = IsMaxima(e, topY); - - if(IsMaximaEdge) - { - TEdge* eMaxPair = GetMaximaPairEx(e); - IsMaximaEdge = (!eMaxPair || !IsHorizontal(*eMaxPair)); - } - - if(IsMaximaEdge) - { - if (m_StrictSimple) m_Maxima.push_back(e->Top.X); - TEdge* ePrev = e->PrevInAEL; - DoMaxima(e); - if( !ePrev ) e = m_ActiveEdges; - else e = ePrev->NextInAEL; - } - else - { - //2. promote horizontal edges, otherwise update Curr.X and Curr.Y ... - if (IsIntermediate(e, topY) && IsHorizontal(*e->NextInLML)) - { - UpdateEdgeIntoAEL(e); - if (e->OutIdx >= 0) - AddOutPt(e, e->Bot); - AddEdgeToSEL(e); - } - else - { - e->Curr.X = TopX( *e, topY ); - e->Curr.Y = topY; -#ifdef use_xyz - e->Curr.Z = topY == e->Top.Y ? e->Top.Z : (topY == e->Bot.Y ? e->Bot.Z : 0); -#endif - } - - //When StrictlySimple and 'e' is being touched by another edge, then - //make sure both edges have a vertex here ... - if (m_StrictSimple) - { - TEdge* ePrev = e->PrevInAEL; - if ((e->OutIdx >= 0) && (e->WindDelta != 0) && ePrev && (ePrev->OutIdx >= 0) && - (ePrev->Curr.X == e->Curr.X) && (ePrev->WindDelta != 0)) - { - IntPoint pt = e->Curr; -#ifdef use_xyz - SetZ(pt, *ePrev, *e); -#endif - OutPt* op = AddOutPt(ePrev, pt); - OutPt* op2 = AddOutPt(e, pt); - AddJoin(op, op2, pt); //StrictlySimple (type-3) join - } - } - - e = e->NextInAEL; - } - } - - //3. Process horizontals at the Top of the scanbeam ... - m_Maxima.sort(); - ProcessHorizontals(); - m_Maxima.clear(); - - //4. Promote intermediate vertices ... - e = m_ActiveEdges; - while(e) - { - if(IsIntermediate(e, topY)) - { - OutPt* op = 0; - if( e->OutIdx >= 0 ) - op = AddOutPt(e, e->Top); - UpdateEdgeIntoAEL(e); - - //if output polygons share an edge, they'll need joining later ... - TEdge* ePrev = e->PrevInAEL; - TEdge* eNext = e->NextInAEL; - if (ePrev && ePrev->Curr.X == e->Bot.X && - ePrev->Curr.Y == e->Bot.Y && op && - ePrev->OutIdx >= 0 && ePrev->Curr.Y > ePrev->Top.Y && - SlopesEqual(e->Curr, e->Top, ePrev->Curr, ePrev->Top, m_UseFullRange) && - (e->WindDelta != 0) && (ePrev->WindDelta != 0)) - { - OutPt* op2 = AddOutPt(ePrev, e->Bot); - AddJoin(op, op2, e->Top); - } - else if (eNext && eNext->Curr.X == e->Bot.X && - eNext->Curr.Y == e->Bot.Y && op && - eNext->OutIdx >= 0 && eNext->Curr.Y > eNext->Top.Y && - SlopesEqual(e->Curr, e->Top, eNext->Curr, eNext->Top, m_UseFullRange) && - (e->WindDelta != 0) && (eNext->WindDelta != 0)) - { - OutPt* op2 = AddOutPt(eNext, e->Bot); - AddJoin(op, op2, e->Top); - } - } - e = e->NextInAEL; - } -} -//------------------------------------------------------------------------------ - -void Clipper::FixupOutPolyline(OutRec &outrec) -{ - OutPt *pp = outrec.Pts; - OutPt *lastPP = pp->Prev; - while (pp != lastPP) - { - pp = pp->Next; - if (pp->Pt == pp->Prev->Pt) - { - if (pp == lastPP) lastPP = pp->Prev; - OutPt *tmpPP = pp->Prev; - tmpPP->Next = pp->Next; - pp->Next->Prev = tmpPP; - delete pp; - pp = tmpPP; - } - } - - if (pp == pp->Prev) - { - DisposeOutPts(pp); - outrec.Pts = 0; - return; - } -} -//------------------------------------------------------------------------------ - -void Clipper::FixupOutPolygon(OutRec &outrec) -{ - //FixupOutPolygon() - removes duplicate points and simplifies consecutive - //parallel edges by removing the middle vertex. - OutPt *lastOK = 0; - outrec.BottomPt = 0; - OutPt *pp = outrec.Pts; - bool preserveCol = m_PreserveCollinear || m_StrictSimple; - - for (;;) - { - if (pp->Prev == pp || pp->Prev == pp->Next) - { - DisposeOutPts(pp); - outrec.Pts = 0; - return; - } - - //test for duplicate points and collinear edges ... - if ((pp->Pt == pp->Next->Pt) || (pp->Pt == pp->Prev->Pt) || - (SlopesEqual(pp->Prev->Pt, pp->Pt, pp->Next->Pt, m_UseFullRange) && - (!preserveCol || !Pt2IsBetweenPt1AndPt3(pp->Prev->Pt, pp->Pt, pp->Next->Pt)))) - { - lastOK = 0; - OutPt *tmp = pp; - pp->Prev->Next = pp->Next; - pp->Next->Prev = pp->Prev; - pp = pp->Prev; - delete tmp; - } - else if (pp == lastOK) break; - else - { - if (!lastOK) lastOK = pp; - pp = pp->Next; - } - } - outrec.Pts = pp; -} -//------------------------------------------------------------------------------ - -int PointCount(OutPt *Pts) -{ - if (!Pts) return 0; - int result = 0; - OutPt* p = Pts; - do - { - result++; - p = p->Next; - } - while (p != Pts); - return result; -} -//------------------------------------------------------------------------------ - -void Clipper::BuildResult(Paths &polys) -{ - polys.reserve(m_PolyOuts.size()); - for (PolyOutList::size_type i = 0; i < m_PolyOuts.size(); ++i) - { - if (!m_PolyOuts[i]->Pts) continue; - Path pg; - OutPt* p = m_PolyOuts[i]->Pts->Prev; - int cnt = PointCount(p); - if (cnt < 2) continue; - pg.reserve(cnt); - for (int i = 0; i < cnt; ++i) - { - pg.push_back(p->Pt); - p = p->Prev; - } - polys.push_back(pg); - } -} -//------------------------------------------------------------------------------ - -void Clipper::BuildResult2(PolyTree& polytree) -{ - polytree.Clear(); - polytree.AllNodes.reserve(m_PolyOuts.size()); - //add each output polygon/contour to polytree ... - for (PolyOutList::size_type i = 0; i < m_PolyOuts.size(); i++) - { - OutRec* outRec = m_PolyOuts[i]; - int cnt = PointCount(outRec->Pts); - if ((outRec->IsOpen && cnt < 2) || (!outRec->IsOpen && cnt < 3)) continue; - FixHoleLinkage(*outRec); - PolyNode* pn = new PolyNode(); - //nb: polytree takes ownership of all the PolyNodes - polytree.AllNodes.push_back(pn); - outRec->PolyNd = pn; - pn->Parent = 0; - pn->Index = 0; - pn->Contour.reserve(cnt); - OutPt *op = outRec->Pts->Prev; - for (int j = 0; j < cnt; j++) - { - pn->Contour.push_back(op->Pt); - op = op->Prev; - } - } - - //fixup PolyNode links etc ... - polytree.Childs.reserve(m_PolyOuts.size()); - for (PolyOutList::size_type i = 0; i < m_PolyOuts.size(); i++) - { - OutRec* outRec = m_PolyOuts[i]; - if (!outRec->PolyNd) continue; - if (outRec->IsOpen) - { - outRec->PolyNd->m_IsOpen = true; - polytree.AddChild(*outRec->PolyNd); - } - else if (outRec->FirstLeft && outRec->FirstLeft->PolyNd) - outRec->FirstLeft->PolyNd->AddChild(*outRec->PolyNd); - else - polytree.AddChild(*outRec->PolyNd); - } -} -//------------------------------------------------------------------------------ - -void SwapIntersectNodes(IntersectNode &int1, IntersectNode &int2) -{ - //just swap the contents (because fIntersectNodes is a single-linked-list) - IntersectNode inode = int1; //gets a copy of Int1 - int1.Edge1 = int2.Edge1; - int1.Edge2 = int2.Edge2; - int1.Pt = int2.Pt; - int2.Edge1 = inode.Edge1; - int2.Edge2 = inode.Edge2; - int2.Pt = inode.Pt; -} -//------------------------------------------------------------------------------ - -inline bool E2InsertsBeforeE1(TEdge &e1, TEdge &e2) -{ - if (e2.Curr.X == e1.Curr.X) - { - if (e2.Top.Y > e1.Top.Y) - return e2.Top.X < TopX(e1, e2.Top.Y); - else return e1.Top.X > TopX(e2, e1.Top.Y); - } - else return e2.Curr.X < e1.Curr.X; -} -//------------------------------------------------------------------------------ - -bool GetOverlap(const cInt a1, const cInt a2, const cInt b1, const cInt b2, - cInt& Left, cInt& Right) -{ - if (a1 < a2) - { - if (b1 < b2) {Left = std::max(a1,b1); Right = std::min(a2,b2);} - else {Left = std::max(a1,b2); Right = std::min(a2,b1);} - } - else - { - if (b1 < b2) {Left = std::max(a2,b1); Right = std::min(a1,b2);} - else {Left = std::max(a2,b2); Right = std::min(a1,b1);} - } - return Left < Right; -} -//------------------------------------------------------------------------------ - -inline void UpdateOutPtIdxs(OutRec& outrec) -{ - OutPt* op = outrec.Pts; - do - { - op->Idx = outrec.Idx; - op = op->Prev; - } - while(op != outrec.Pts); -} -//------------------------------------------------------------------------------ - -void Clipper::InsertEdgeIntoAEL(TEdge *edge, TEdge* startEdge) -{ - if(!m_ActiveEdges) - { - edge->PrevInAEL = 0; - edge->NextInAEL = 0; - m_ActiveEdges = edge; - } - else if(!startEdge && E2InsertsBeforeE1(*m_ActiveEdges, *edge)) - { - edge->PrevInAEL = 0; - edge->NextInAEL = m_ActiveEdges; - m_ActiveEdges->PrevInAEL = edge; - m_ActiveEdges = edge; - } - else - { - if(!startEdge) startEdge = m_ActiveEdges; - while(startEdge->NextInAEL && - !E2InsertsBeforeE1(*startEdge->NextInAEL , *edge)) - startEdge = startEdge->NextInAEL; - edge->NextInAEL = startEdge->NextInAEL; - if(startEdge->NextInAEL) startEdge->NextInAEL->PrevInAEL = edge; - edge->PrevInAEL = startEdge; - startEdge->NextInAEL = edge; - } -} -//---------------------------------------------------------------------- - -OutPt* DupOutPt(OutPt* outPt, bool InsertAfter) -{ - OutPt* result = new OutPt; - result->Pt = outPt->Pt; - result->Idx = outPt->Idx; - if (InsertAfter) - { - result->Next = outPt->Next; - result->Prev = outPt; - outPt->Next->Prev = result; - outPt->Next = result; - } - else - { - result->Prev = outPt->Prev; - result->Next = outPt; - outPt->Prev->Next = result; - outPt->Prev = result; - } - return result; -} -//------------------------------------------------------------------------------ - -bool JoinHorz(OutPt* op1, OutPt* op1b, OutPt* op2, OutPt* op2b, - const IntPoint Pt, bool DiscardLeft) -{ - Direction Dir1 = (op1->Pt.X > op1b->Pt.X ? dRightToLeft : dLeftToRight); - Direction Dir2 = (op2->Pt.X > op2b->Pt.X ? dRightToLeft : dLeftToRight); - if (Dir1 == Dir2) return false; - - //When DiscardLeft, we want Op1b to be on the Left of Op1, otherwise we - //want Op1b to be on the Right. (And likewise with Op2 and Op2b.) - //So, to facilitate this while inserting Op1b and Op2b ... - //when DiscardLeft, make sure we're AT or RIGHT of Pt before adding Op1b, - //otherwise make sure we're AT or LEFT of Pt. (Likewise with Op2b.) - if (Dir1 == dLeftToRight) - { - while (op1->Next->Pt.X <= Pt.X && - op1->Next->Pt.X >= op1->Pt.X && op1->Next->Pt.Y == Pt.Y) - op1 = op1->Next; - if (DiscardLeft && (op1->Pt.X != Pt.X)) op1 = op1->Next; - op1b = DupOutPt(op1, !DiscardLeft); - if (op1b->Pt != Pt) - { - op1 = op1b; - op1->Pt = Pt; - op1b = DupOutPt(op1, !DiscardLeft); - } - } - else - { - while (op1->Next->Pt.X >= Pt.X && - op1->Next->Pt.X <= op1->Pt.X && op1->Next->Pt.Y == Pt.Y) - op1 = op1->Next; - if (!DiscardLeft && (op1->Pt.X != Pt.X)) op1 = op1->Next; - op1b = DupOutPt(op1, DiscardLeft); - if (op1b->Pt != Pt) - { - op1 = op1b; - op1->Pt = Pt; - op1b = DupOutPt(op1, DiscardLeft); - } - } - - if (Dir2 == dLeftToRight) - { - while (op2->Next->Pt.X <= Pt.X && - op2->Next->Pt.X >= op2->Pt.X && op2->Next->Pt.Y == Pt.Y) - op2 = op2->Next; - if (DiscardLeft && (op2->Pt.X != Pt.X)) op2 = op2->Next; - op2b = DupOutPt(op2, !DiscardLeft); - if (op2b->Pt != Pt) - { - op2 = op2b; - op2->Pt = Pt; - op2b = DupOutPt(op2, !DiscardLeft); - }; - } else - { - while (op2->Next->Pt.X >= Pt.X && - op2->Next->Pt.X <= op2->Pt.X && op2->Next->Pt.Y == Pt.Y) - op2 = op2->Next; - if (!DiscardLeft && (op2->Pt.X != Pt.X)) op2 = op2->Next; - op2b = DupOutPt(op2, DiscardLeft); - if (op2b->Pt != Pt) - { - op2 = op2b; - op2->Pt = Pt; - op2b = DupOutPt(op2, DiscardLeft); - }; - }; - - if ((Dir1 == dLeftToRight) == DiscardLeft) - { - op1->Prev = op2; - op2->Next = op1; - op1b->Next = op2b; - op2b->Prev = op1b; - } - else - { - op1->Next = op2; - op2->Prev = op1; - op1b->Prev = op2b; - op2b->Next = op1b; - } - return true; -} -//------------------------------------------------------------------------------ - -bool Clipper::JoinPoints(Join *j, OutRec* outRec1, OutRec* outRec2) -{ - OutPt *op1 = j->OutPt1, *op1b; - OutPt *op2 = j->OutPt2, *op2b; - - //There are 3 kinds of joins for output polygons ... - //1. Horizontal joins where Join.OutPt1 & Join.OutPt2 are vertices anywhere - //along (horizontal) collinear edges (& Join.OffPt is on the same horizontal). - //2. Non-horizontal joins where Join.OutPt1 & Join.OutPt2 are at the same - //location at the Bottom of the overlapping segment (& Join.OffPt is above). - //3. StrictSimple joins where edges touch but are not collinear and where - //Join.OutPt1, Join.OutPt2 & Join.OffPt all share the same point. - bool isHorizontal = (j->OutPt1->Pt.Y == j->OffPt.Y); - - if (isHorizontal && (j->OffPt == j->OutPt1->Pt) && - (j->OffPt == j->OutPt2->Pt)) - { - //Strictly Simple join ... - if (outRec1 != outRec2) return false; - op1b = j->OutPt1->Next; - while (op1b != op1 && (op1b->Pt == j->OffPt)) - op1b = op1b->Next; - bool reverse1 = (op1b->Pt.Y > j->OffPt.Y); - op2b = j->OutPt2->Next; - while (op2b != op2 && (op2b->Pt == j->OffPt)) - op2b = op2b->Next; - bool reverse2 = (op2b->Pt.Y > j->OffPt.Y); - if (reverse1 == reverse2) return false; - if (reverse1) - { - op1b = DupOutPt(op1, false); - op2b = DupOutPt(op2, true); - op1->Prev = op2; - op2->Next = op1; - op1b->Next = op2b; - op2b->Prev = op1b; - j->OutPt1 = op1; - j->OutPt2 = op1b; - return true; - } else - { - op1b = DupOutPt(op1, true); - op2b = DupOutPt(op2, false); - op1->Next = op2; - op2->Prev = op1; - op1b->Prev = op2b; - op2b->Next = op1b; - j->OutPt1 = op1; - j->OutPt2 = op1b; - return true; - } - } - else if (isHorizontal) - { - //treat horizontal joins differently to non-horizontal joins since with - //them we're not yet sure where the overlapping is. OutPt1.Pt & OutPt2.Pt - //may be anywhere along the horizontal edge. - op1b = op1; - while (op1->Prev->Pt.Y == op1->Pt.Y && op1->Prev != op1b && op1->Prev != op2) - op1 = op1->Prev; - while (op1b->Next->Pt.Y == op1b->Pt.Y && op1b->Next != op1 && op1b->Next != op2) - op1b = op1b->Next; - if (op1b->Next == op1 || op1b->Next == op2) return false; //a flat 'polygon' - - op2b = op2; - while (op2->Prev->Pt.Y == op2->Pt.Y && op2->Prev != op2b && op2->Prev != op1b) - op2 = op2->Prev; - while (op2b->Next->Pt.Y == op2b->Pt.Y && op2b->Next != op2 && op2b->Next != op1) - op2b = op2b->Next; - if (op2b->Next == op2 || op2b->Next == op1) return false; //a flat 'polygon' - - cInt Left, Right; - //Op1 --> Op1b & Op2 --> Op2b are the extremites of the horizontal edges - if (!GetOverlap(op1->Pt.X, op1b->Pt.X, op2->Pt.X, op2b->Pt.X, Left, Right)) - return false; - - //DiscardLeftSide: when overlapping edges are joined, a spike will created - //which needs to be cleaned up. However, we don't want Op1 or Op2 caught up - //on the discard Side as either may still be needed for other joins ... - IntPoint Pt; - bool DiscardLeftSide; - if (op1->Pt.X >= Left && op1->Pt.X <= Right) - { - Pt = op1->Pt; DiscardLeftSide = (op1->Pt.X > op1b->Pt.X); - } - else if (op2->Pt.X >= Left&& op2->Pt.X <= Right) - { - Pt = op2->Pt; DiscardLeftSide = (op2->Pt.X > op2b->Pt.X); - } - else if (op1b->Pt.X >= Left && op1b->Pt.X <= Right) - { - Pt = op1b->Pt; DiscardLeftSide = op1b->Pt.X > op1->Pt.X; - } - else - { - Pt = op2b->Pt; DiscardLeftSide = (op2b->Pt.X > op2->Pt.X); - } - j->OutPt1 = op1; j->OutPt2 = op2; - return JoinHorz(op1, op1b, op2, op2b, Pt, DiscardLeftSide); - } else - { - //nb: For non-horizontal joins ... - // 1. Jr.OutPt1.Pt.Y == Jr.OutPt2.Pt.Y - // 2. Jr.OutPt1.Pt > Jr.OffPt.Y - - //make sure the polygons are correctly oriented ... - op1b = op1->Next; - while ((op1b->Pt == op1->Pt) && (op1b != op1)) op1b = op1b->Next; - bool Reverse1 = ((op1b->Pt.Y > op1->Pt.Y) || - !SlopesEqual(op1->Pt, op1b->Pt, j->OffPt, m_UseFullRange)); - if (Reverse1) - { - op1b = op1->Prev; - while ((op1b->Pt == op1->Pt) && (op1b != op1)) op1b = op1b->Prev; - if ((op1b->Pt.Y > op1->Pt.Y) || - !SlopesEqual(op1->Pt, op1b->Pt, j->OffPt, m_UseFullRange)) return false; - }; - op2b = op2->Next; - while ((op2b->Pt == op2->Pt) && (op2b != op2))op2b = op2b->Next; - bool Reverse2 = ((op2b->Pt.Y > op2->Pt.Y) || - !SlopesEqual(op2->Pt, op2b->Pt, j->OffPt, m_UseFullRange)); - if (Reverse2) - { - op2b = op2->Prev; - while ((op2b->Pt == op2->Pt) && (op2b != op2)) op2b = op2b->Prev; - if ((op2b->Pt.Y > op2->Pt.Y) || - !SlopesEqual(op2->Pt, op2b->Pt, j->OffPt, m_UseFullRange)) return false; - } - - if ((op1b == op1) || (op2b == op2) || (op1b == op2b) || - ((outRec1 == outRec2) && (Reverse1 == Reverse2))) return false; - - if (Reverse1) - { - op1b = DupOutPt(op1, false); - op2b = DupOutPt(op2, true); - op1->Prev = op2; - op2->Next = op1; - op1b->Next = op2b; - op2b->Prev = op1b; - j->OutPt1 = op1; - j->OutPt2 = op1b; - return true; - } else - { - op1b = DupOutPt(op1, true); - op2b = DupOutPt(op2, false); - op1->Next = op2; - op2->Prev = op1; - op1b->Prev = op2b; - op2b->Next = op1b; - j->OutPt1 = op1; - j->OutPt2 = op1b; - return true; - } - } -} -//---------------------------------------------------------------------- - -static OutRec* ParseFirstLeft(OutRec* FirstLeft) -{ - while (FirstLeft && !FirstLeft->Pts) - FirstLeft = FirstLeft->FirstLeft; - return FirstLeft; -} -//------------------------------------------------------------------------------ - -void Clipper::FixupFirstLefts1(OutRec* OldOutRec, OutRec* NewOutRec) -{ - //tests if NewOutRec contains the polygon before reassigning FirstLeft - for (PolyOutList::size_type i = 0; i < m_PolyOuts.size(); ++i) - { - OutRec* outRec = m_PolyOuts[i]; - OutRec* firstLeft = ParseFirstLeft(outRec->FirstLeft); - if (outRec->Pts && firstLeft == OldOutRec) - { - if (Poly2ContainsPoly1(outRec->Pts, NewOutRec->Pts)) - outRec->FirstLeft = NewOutRec; - } - } -} -//---------------------------------------------------------------------- - -void Clipper::FixupFirstLefts2(OutRec* InnerOutRec, OutRec* OuterOutRec) -{ - //A polygon has split into two such that one is now the inner of the other. - //It's possible that these polygons now wrap around other polygons, so check - //every polygon that's also contained by OuterOutRec's FirstLeft container - //(including 0) to see if they've become inner to the new inner polygon ... - OutRec* orfl = OuterOutRec->FirstLeft; - for (PolyOutList::size_type i = 0; i < m_PolyOuts.size(); ++i) - { - OutRec* outRec = m_PolyOuts[i]; - - if (!outRec->Pts || outRec == OuterOutRec || outRec == InnerOutRec) - continue; - OutRec* firstLeft = ParseFirstLeft(outRec->FirstLeft); - if (firstLeft != orfl && firstLeft != InnerOutRec && firstLeft != OuterOutRec) - continue; - if (Poly2ContainsPoly1(outRec->Pts, InnerOutRec->Pts)) - outRec->FirstLeft = InnerOutRec; - else if (Poly2ContainsPoly1(outRec->Pts, OuterOutRec->Pts)) - outRec->FirstLeft = OuterOutRec; - else if (outRec->FirstLeft == InnerOutRec || outRec->FirstLeft == OuterOutRec) - outRec->FirstLeft = orfl; - } -} -//---------------------------------------------------------------------- -void Clipper::FixupFirstLefts3(OutRec* OldOutRec, OutRec* NewOutRec) -{ - //reassigns FirstLeft WITHOUT testing if NewOutRec contains the polygon - for (PolyOutList::size_type i = 0; i < m_PolyOuts.size(); ++i) - { - OutRec* outRec = m_PolyOuts[i]; - OutRec* firstLeft = ParseFirstLeft(outRec->FirstLeft); - if (outRec->Pts && firstLeft == OldOutRec) - outRec->FirstLeft = NewOutRec; - } -} -//---------------------------------------------------------------------- - -void Clipper::JoinCommonEdges() -{ - for (JoinList::size_type i = 0; i < m_Joins.size(); i++) - { - Join* join = m_Joins[i]; - - OutRec *outRec1 = GetOutRec(join->OutPt1->Idx); - OutRec *outRec2 = GetOutRec(join->OutPt2->Idx); - - if (!outRec1->Pts || !outRec2->Pts) continue; - if (outRec1->IsOpen || outRec2->IsOpen) continue; - - //get the polygon fragment with the correct hole state (FirstLeft) - //before calling JoinPoints() ... - OutRec *holeStateRec; - if (outRec1 == outRec2) holeStateRec = outRec1; - else if (OutRec1RightOfOutRec2(outRec1, outRec2)) holeStateRec = outRec2; - else if (OutRec1RightOfOutRec2(outRec2, outRec1)) holeStateRec = outRec1; - else holeStateRec = GetLowermostRec(outRec1, outRec2); - - if (!JoinPoints(join, outRec1, outRec2)) continue; - - if (outRec1 == outRec2) - { - //instead of joining two polygons, we've just created a new one by - //splitting one polygon into two. - outRec1->Pts = join->OutPt1; - outRec1->BottomPt = 0; - outRec2 = CreateOutRec(); - outRec2->Pts = join->OutPt2; - - //update all OutRec2.Pts Idx's ... - UpdateOutPtIdxs(*outRec2); - - if (Poly2ContainsPoly1(outRec2->Pts, outRec1->Pts)) - { - //outRec1 contains outRec2 ... - outRec2->IsHole = !outRec1->IsHole; - outRec2->FirstLeft = outRec1; - - if (m_UsingPolyTree) FixupFirstLefts2(outRec2, outRec1); - - if ((outRec2->IsHole ^ m_ReverseOutput) == (Area(*outRec2) > 0)) - ReversePolyPtLinks(outRec2->Pts); - - } else if (Poly2ContainsPoly1(outRec1->Pts, outRec2->Pts)) - { - //outRec2 contains outRec1 ... - outRec2->IsHole = outRec1->IsHole; - outRec1->IsHole = !outRec2->IsHole; - outRec2->FirstLeft = outRec1->FirstLeft; - outRec1->FirstLeft = outRec2; - - if (m_UsingPolyTree) FixupFirstLefts2(outRec1, outRec2); - - if ((outRec1->IsHole ^ m_ReverseOutput) == (Area(*outRec1) > 0)) - ReversePolyPtLinks(outRec1->Pts); - } - else - { - //the 2 polygons are completely separate ... - outRec2->IsHole = outRec1->IsHole; - outRec2->FirstLeft = outRec1->FirstLeft; - - //fixup FirstLeft pointers that may need reassigning to OutRec2 - if (m_UsingPolyTree) FixupFirstLefts1(outRec1, outRec2); - } - - } else - { - //joined 2 polygons together ... - - outRec2->Pts = 0; - outRec2->BottomPt = 0; - outRec2->Idx = outRec1->Idx; - - outRec1->IsHole = holeStateRec->IsHole; - if (holeStateRec == outRec2) - outRec1->FirstLeft = outRec2->FirstLeft; - outRec2->FirstLeft = outRec1; - - if (m_UsingPolyTree) FixupFirstLefts3(outRec2, outRec1); - } - } -} - -//------------------------------------------------------------------------------ -// ClipperOffset support functions ... -//------------------------------------------------------------------------------ - -DoublePoint GetUnitNormal(const IntPoint &pt1, const IntPoint &pt2) -{ - if(pt2.X == pt1.X && pt2.Y == pt1.Y) - return DoublePoint(0, 0); - - double Dx = (double)(pt2.X - pt1.X); - double dy = (double)(pt2.Y - pt1.Y); - double f = 1 *1.0/ std::sqrt( Dx*Dx + dy*dy ); - Dx *= f; - dy *= f; - return DoublePoint(dy, -Dx); -} - -//------------------------------------------------------------------------------ -// ClipperOffset class -//------------------------------------------------------------------------------ - -ClipperOffset::ClipperOffset(double miterLimit, double arcTolerance) -{ - this->MiterLimit = miterLimit; - this->ArcTolerance = arcTolerance; - m_lowest.X = -1; -} -//------------------------------------------------------------------------------ - -ClipperOffset::~ClipperOffset() -{ - Clear(); -} -//------------------------------------------------------------------------------ - -void ClipperOffset::Clear() -{ - for (int i = 0; i < m_polyNodes.ChildCount(); ++i) - delete m_polyNodes.Childs[i]; - m_polyNodes.Childs.clear(); - m_lowest.X = -1; -} -//------------------------------------------------------------------------------ - -void ClipperOffset::AddPath(const Path& path, JoinType joinType, EndType endType) -{ - int highI = (int)path.size() - 1; - if (highI < 0) return; - PolyNode* newNode = new PolyNode(); - newNode->m_jointype = joinType; - newNode->m_endtype = endType; - - //strip duplicate points from path and also get index to the lowest point ... - if (endType == etClosedLine || endType == etClosedPolygon) - while (highI > 0 && path[0] == path[highI]) highI--; - newNode->Contour.reserve(highI + 1); - newNode->Contour.push_back(path[0]); - int j = 0, k = 0; - for (int i = 1; i <= highI; i++) - if (newNode->Contour[j] != path[i]) - { - j++; - newNode->Contour.push_back(path[i]); - if (path[i].Y > newNode->Contour[k].Y || - (path[i].Y == newNode->Contour[k].Y && - path[i].X < newNode->Contour[k].X)) k = j; - } - if (endType == etClosedPolygon && j < 2) - { - delete newNode; - return; - } - m_polyNodes.AddChild(*newNode); - - //if this path's lowest pt is lower than all the others then update m_lowest - if (endType != etClosedPolygon) return; - if (m_lowest.X < 0) - m_lowest = IntPoint(m_polyNodes.ChildCount() - 1, k); - else - { - IntPoint ip = m_polyNodes.Childs[(int)m_lowest.X]->Contour[(int)m_lowest.Y]; - if (newNode->Contour[k].Y > ip.Y || - (newNode->Contour[k].Y == ip.Y && - newNode->Contour[k].X < ip.X)) - m_lowest = IntPoint(m_polyNodes.ChildCount() - 1, k); - } -} -//------------------------------------------------------------------------------ - -void ClipperOffset::AddPaths(const Paths& paths, JoinType joinType, EndType endType) -{ - for (Paths::size_type i = 0; i < paths.size(); ++i) - AddPath(paths[i], joinType, endType); -} -//------------------------------------------------------------------------------ - -void ClipperOffset::FixOrientations() -{ - //fixup orientations of all closed paths if the orientation of the - //closed path with the lowermost vertex is wrong ... - if (m_lowest.X >= 0 && - !Orientation(m_polyNodes.Childs[(int)m_lowest.X]->Contour)) - { - for (int i = 0; i < m_polyNodes.ChildCount(); ++i) - { - PolyNode& node = *m_polyNodes.Childs[i]; - if (node.m_endtype == etClosedPolygon || - (node.m_endtype == etClosedLine && Orientation(node.Contour))) - ReversePath(node.Contour); - } - } else - { - for (int i = 0; i < m_polyNodes.ChildCount(); ++i) - { - PolyNode& node = *m_polyNodes.Childs[i]; - if (node.m_endtype == etClosedLine && !Orientation(node.Contour)) - ReversePath(node.Contour); - } - } -} -//------------------------------------------------------------------------------ - -void ClipperOffset::Execute(Paths& solution, double delta) -{ - solution.clear(); - FixOrientations(); - DoOffset(delta); - - //now clean up 'corners' ... - Clipper clpr; - clpr.AddPaths(m_destPolys, ptSubject, true); - if (delta > 0) - { - clpr.Execute(ctUnion, solution, pftPositive, pftPositive); - } - else - { - IntRect r = clpr.GetBounds(); - Path outer(4); - outer[0] = IntPoint(r.left - 10, r.bottom + 10); - outer[1] = IntPoint(r.right + 10, r.bottom + 10); - outer[2] = IntPoint(r.right + 10, r.top - 10); - outer[3] = IntPoint(r.left - 10, r.top - 10); - - clpr.AddPath(outer, ptSubject, true); - clpr.ReverseSolution(true); - clpr.Execute(ctUnion, solution, pftNegative, pftNegative); - if (solution.size() > 0) solution.erase(solution.begin()); - } -} -//------------------------------------------------------------------------------ - -void ClipperOffset::Execute(PolyTree& solution, double delta) -{ - solution.Clear(); - FixOrientations(); - DoOffset(delta); - - //now clean up 'corners' ... - Clipper clpr; - clpr.AddPaths(m_destPolys, ptSubject, true); - if (delta > 0) - { - clpr.Execute(ctUnion, solution, pftPositive, pftPositive); - } - else - { - IntRect r = clpr.GetBounds(); - Path outer(4); - outer[0] = IntPoint(r.left - 10, r.bottom + 10); - outer[1] = IntPoint(r.right + 10, r.bottom + 10); - outer[2] = IntPoint(r.right + 10, r.top - 10); - outer[3] = IntPoint(r.left - 10, r.top - 10); - - clpr.AddPath(outer, ptSubject, true); - clpr.ReverseSolution(true); - clpr.Execute(ctUnion, solution, pftNegative, pftNegative); - //remove the outer PolyNode rectangle ... - if (solution.ChildCount() == 1 && solution.Childs[0]->ChildCount() > 0) - { - PolyNode* outerNode = solution.Childs[0]; - solution.Childs.reserve(outerNode->ChildCount()); - solution.Childs[0] = outerNode->Childs[0]; - solution.Childs[0]->Parent = outerNode->Parent; - for (int i = 1; i < outerNode->ChildCount(); ++i) - solution.AddChild(*outerNode->Childs[i]); - } - else - solution.Clear(); - } -} -//------------------------------------------------------------------------------ - -void ClipperOffset::DoOffset(double delta) -{ - m_destPolys.clear(); - m_delta = delta; - - //if Zero offset, just copy any CLOSED polygons to m_p and return ... - if (NEAR_ZERO(delta)) - { - m_destPolys.reserve(m_polyNodes.ChildCount()); - for (int i = 0; i < m_polyNodes.ChildCount(); i++) - { - PolyNode& node = *m_polyNodes.Childs[i]; - if (node.m_endtype == etClosedPolygon) - m_destPolys.push_back(node.Contour); - } - return; - } - - //see offset_triginometry3.svg in the documentation folder ... - if (MiterLimit > 2) m_miterLim = 2/(MiterLimit * MiterLimit); - else m_miterLim = 0.5; - - double y; - if (ArcTolerance <= 0.0) y = def_arc_tolerance; - else if (ArcTolerance > std::fabs(delta) * def_arc_tolerance) - y = std::fabs(delta) * def_arc_tolerance; - else y = ArcTolerance; - //see offset_triginometry2.svg in the documentation folder ... - double steps = pi / std::acos(1 - y / std::fabs(delta)); - if (steps > std::fabs(delta) * pi) - steps = std::fabs(delta) * pi; //ie excessive precision check - m_sin = std::sin(two_pi / steps); - m_cos = std::cos(two_pi / steps); - m_StepsPerRad = steps / two_pi; - if (delta < 0.0) m_sin = -m_sin; - - m_destPolys.reserve(m_polyNodes.ChildCount() * 2); - for (int i = 0; i < m_polyNodes.ChildCount(); i++) - { - PolyNode& node = *m_polyNodes.Childs[i]; - m_srcPoly = node.Contour; - - int len = (int)m_srcPoly.size(); - if (len == 0 || (delta <= 0 && (len < 3 || node.m_endtype != etClosedPolygon))) - continue; - - m_destPoly.clear(); - if (len == 1) - { - if (node.m_jointype == jtRound) - { - double X = 1.0, Y = 0.0; - for (cInt j = 1; j <= steps; j++) - { - m_destPoly.push_back(IntPoint( - Round(m_srcPoly[0].X + X * delta), - Round(m_srcPoly[0].Y + Y * delta))); - double X2 = X; - X = X * m_cos - m_sin * Y; - Y = X2 * m_sin + Y * m_cos; - } - } - else - { - double X = -1.0, Y = -1.0; - for (int j = 0; j < 4; ++j) - { - m_destPoly.push_back(IntPoint( - Round(m_srcPoly[0].X + X * delta), - Round(m_srcPoly[0].Y + Y * delta))); - if (X < 0) X = 1; - else if (Y < 0) Y = 1; - else X = -1; - } - } - m_destPolys.push_back(m_destPoly); - continue; - } - //build m_normals ... - m_normals.clear(); - m_normals.reserve(len); - for (int j = 0; j < len - 1; ++j) - m_normals.push_back(GetUnitNormal(m_srcPoly[j], m_srcPoly[j + 1])); - if (node.m_endtype == etClosedLine || node.m_endtype == etClosedPolygon) - m_normals.push_back(GetUnitNormal(m_srcPoly[len - 1], m_srcPoly[0])); - else - m_normals.push_back(DoublePoint(m_normals[len - 2])); - - if (node.m_endtype == etClosedPolygon) - { - int k = len - 1; - for (int j = 0; j < len; ++j) - OffsetPoint(j, k, node.m_jointype); - m_destPolys.push_back(m_destPoly); - } - else if (node.m_endtype == etClosedLine) - { - int k = len - 1; - for (int j = 0; j < len; ++j) - OffsetPoint(j, k, node.m_jointype); - m_destPolys.push_back(m_destPoly); - m_destPoly.clear(); - //re-build m_normals ... - DoublePoint n = m_normals[len -1]; - for (int j = len - 1; j > 0; j--) - m_normals[j] = DoublePoint(-m_normals[j - 1].X, -m_normals[j - 1].Y); - m_normals[0] = DoublePoint(-n.X, -n.Y); - k = 0; - for (int j = len - 1; j >= 0; j--) - OffsetPoint(j, k, node.m_jointype); - m_destPolys.push_back(m_destPoly); - } - else - { - int k = 0; - for (int j = 1; j < len - 1; ++j) - OffsetPoint(j, k, node.m_jointype); - - IntPoint pt1; - if (node.m_endtype == etOpenButt) - { - int j = len - 1; - pt1 = IntPoint((cInt)Round(m_srcPoly[j].X + m_normals[j].X * - delta), (cInt)Round(m_srcPoly[j].Y + m_normals[j].Y * delta)); - m_destPoly.push_back(pt1); - pt1 = IntPoint((cInt)Round(m_srcPoly[j].X - m_normals[j].X * - delta), (cInt)Round(m_srcPoly[j].Y - m_normals[j].Y * delta)); - m_destPoly.push_back(pt1); - } - else - { - int j = len - 1; - k = len - 2; - m_sinA = 0; - m_normals[j] = DoublePoint(-m_normals[j].X, -m_normals[j].Y); - if (node.m_endtype == etOpenSquare) - DoSquare(j, k); - else - DoRound(j, k); - } - - //re-build m_normals ... - for (int j = len - 1; j > 0; j--) - m_normals[j] = DoublePoint(-m_normals[j - 1].X, -m_normals[j - 1].Y); - m_normals[0] = DoublePoint(-m_normals[1].X, -m_normals[1].Y); - - k = len - 1; - for (int j = k - 1; j > 0; --j) OffsetPoint(j, k, node.m_jointype); - - if (node.m_endtype == etOpenButt) - { - pt1 = IntPoint((cInt)Round(m_srcPoly[0].X - m_normals[0].X * delta), - (cInt)Round(m_srcPoly[0].Y - m_normals[0].Y * delta)); - m_destPoly.push_back(pt1); - pt1 = IntPoint((cInt)Round(m_srcPoly[0].X + m_normals[0].X * delta), - (cInt)Round(m_srcPoly[0].Y + m_normals[0].Y * delta)); - m_destPoly.push_back(pt1); - } - else - { - k = 1; - m_sinA = 0; - if (node.m_endtype == etOpenSquare) - DoSquare(0, 1); - else - DoRound(0, 1); - } - m_destPolys.push_back(m_destPoly); - } - } -} -//------------------------------------------------------------------------------ - -void ClipperOffset::OffsetPoint(int j, int& k, JoinType jointype) -{ - //cross product ... - m_sinA = (m_normals[k].X * m_normals[j].Y - m_normals[j].X * m_normals[k].Y); - if (std::fabs(m_sinA * m_delta) < 1.0) - { - //dot product ... - double cosA = (m_normals[k].X * m_normals[j].X + m_normals[j].Y * m_normals[k].Y ); - if (cosA > 0) // angle => 0 degrees - { - m_destPoly.push_back(IntPoint(Round(m_srcPoly[j].X + m_normals[k].X * m_delta), - Round(m_srcPoly[j].Y + m_normals[k].Y * m_delta))); - return; - } - //else angle => 180 degrees - } - else if (m_sinA > 1.0) m_sinA = 1.0; - else if (m_sinA < -1.0) m_sinA = -1.0; - - if (m_sinA * m_delta < 0) - { - m_destPoly.push_back(IntPoint(Round(m_srcPoly[j].X + m_normals[k].X * m_delta), - Round(m_srcPoly[j].Y + m_normals[k].Y * m_delta))); - m_destPoly.push_back(m_srcPoly[j]); - m_destPoly.push_back(IntPoint(Round(m_srcPoly[j].X + m_normals[j].X * m_delta), - Round(m_srcPoly[j].Y + m_normals[j].Y * m_delta))); - } - else - switch (jointype) - { - case jtMiter: - { - double r = 1 + (m_normals[j].X * m_normals[k].X + - m_normals[j].Y * m_normals[k].Y); - if (r >= m_miterLim) DoMiter(j, k, r); else DoSquare(j, k); - break; - } - case jtSquare: DoSquare(j, k); break; - case jtRound: DoRound(j, k); break; - } - k = j; -} -//------------------------------------------------------------------------------ - -void ClipperOffset::DoSquare(int j, int k) -{ - double dx = std::tan(std::atan2(m_sinA, - m_normals[k].X * m_normals[j].X + m_normals[k].Y * m_normals[j].Y) / 4); - m_destPoly.push_back(IntPoint( - Round(m_srcPoly[j].X + m_delta * (m_normals[k].X - m_normals[k].Y * dx)), - Round(m_srcPoly[j].Y + m_delta * (m_normals[k].Y + m_normals[k].X * dx)))); - m_destPoly.push_back(IntPoint( - Round(m_srcPoly[j].X + m_delta * (m_normals[j].X + m_normals[j].Y * dx)), - Round(m_srcPoly[j].Y + m_delta * (m_normals[j].Y - m_normals[j].X * dx)))); -} -//------------------------------------------------------------------------------ - -void ClipperOffset::DoMiter(int j, int k, double r) -{ - double q = m_delta / r; - m_destPoly.push_back(IntPoint(Round(m_srcPoly[j].X + (m_normals[k].X + m_normals[j].X) * q), - Round(m_srcPoly[j].Y + (m_normals[k].Y + m_normals[j].Y) * q))); -} -//------------------------------------------------------------------------------ - -void ClipperOffset::DoRound(int j, int k) -{ - double a = std::atan2(m_sinA, - m_normals[k].X * m_normals[j].X + m_normals[k].Y * m_normals[j].Y); - int steps = std::max((int)Round(m_StepsPerRad * std::fabs(a)), 1); - - double X = m_normals[k].X, Y = m_normals[k].Y, X2; - for (int i = 0; i < steps; ++i) - { - m_destPoly.push_back(IntPoint( - Round(m_srcPoly[j].X + X * m_delta), - Round(m_srcPoly[j].Y + Y * m_delta))); - X2 = X; - X = X * m_cos - m_sin * Y; - Y = X2 * m_sin + Y * m_cos; - } - m_destPoly.push_back(IntPoint( - Round(m_srcPoly[j].X + m_normals[j].X * m_delta), - Round(m_srcPoly[j].Y + m_normals[j].Y * m_delta))); -} - -//------------------------------------------------------------------------------ -// Miscellaneous public functions -//------------------------------------------------------------------------------ - -void Clipper::DoSimplePolygons() -{ - PolyOutList::size_type i = 0; - while (i < m_PolyOuts.size()) - { - OutRec* outrec = m_PolyOuts[i++]; - OutPt* op = outrec->Pts; - if (!op || outrec->IsOpen) continue; - do //for each Pt in Polygon until duplicate found do ... - { - OutPt* op2 = op->Next; - while (op2 != outrec->Pts) - { - if ((op->Pt == op2->Pt) && op2->Next != op && op2->Prev != op) - { - //split the polygon into two ... - OutPt* op3 = op->Prev; - OutPt* op4 = op2->Prev; - op->Prev = op4; - op4->Next = op; - op2->Prev = op3; - op3->Next = op2; - - outrec->Pts = op; - OutRec* outrec2 = CreateOutRec(); - outrec2->Pts = op2; - UpdateOutPtIdxs(*outrec2); - if (Poly2ContainsPoly1(outrec2->Pts, outrec->Pts)) - { - //OutRec2 is contained by OutRec1 ... - outrec2->IsHole = !outrec->IsHole; - outrec2->FirstLeft = outrec; - if (m_UsingPolyTree) FixupFirstLefts2(outrec2, outrec); - } - else - if (Poly2ContainsPoly1(outrec->Pts, outrec2->Pts)) - { - //OutRec1 is contained by OutRec2 ... - outrec2->IsHole = outrec->IsHole; - outrec->IsHole = !outrec2->IsHole; - outrec2->FirstLeft = outrec->FirstLeft; - outrec->FirstLeft = outrec2; - if (m_UsingPolyTree) FixupFirstLefts2(outrec, outrec2); - } - else - { - //the 2 polygons are separate ... - outrec2->IsHole = outrec->IsHole; - outrec2->FirstLeft = outrec->FirstLeft; - if (m_UsingPolyTree) FixupFirstLefts1(outrec, outrec2); - } - op2 = op; //ie get ready for the Next iteration - } - op2 = op2->Next; - } - op = op->Next; - } - while (op != outrec->Pts); - } -} -//------------------------------------------------------------------------------ - -void ReversePath(Path& p) -{ - std::reverse(p.begin(), p.end()); -} -//------------------------------------------------------------------------------ - -void ReversePaths(Paths& p) -{ - for (Paths::size_type i = 0; i < p.size(); ++i) - ReversePath(p[i]); -} -//------------------------------------------------------------------------------ - -void SimplifyPolygon(const Path &in_poly, Paths &out_polys, PolyFillType fillType) -{ - Clipper c; - c.StrictlySimple(true); - c.AddPath(in_poly, ptSubject, true); - c.Execute(ctUnion, out_polys, fillType, fillType); -} -//------------------------------------------------------------------------------ - -void SimplifyPolygons(const Paths &in_polys, Paths &out_polys, PolyFillType fillType) -{ - Clipper c; - c.StrictlySimple(true); - c.AddPaths(in_polys, ptSubject, true); - c.Execute(ctUnion, out_polys, fillType, fillType); -} -//------------------------------------------------------------------------------ - -void SimplifyPolygons(Paths &polys, PolyFillType fillType) -{ - SimplifyPolygons(polys, polys, fillType); -} -//------------------------------------------------------------------------------ - -inline double DistanceSqrd(const IntPoint& pt1, const IntPoint& pt2) -{ - double Dx = ((double)pt1.X - pt2.X); - double dy = ((double)pt1.Y - pt2.Y); - return (Dx*Dx + dy*dy); -} -//------------------------------------------------------------------------------ - -double DistanceFromLineSqrd( - const IntPoint& pt, const IntPoint& ln1, const IntPoint& ln2) -{ - //The equation of a line in general form (Ax + By + C = 0) - //given 2 points (x¹,y¹) & (x²,y²) is ... - //(y¹ - y²)x + (x² - x¹)y + (y² - y¹)x¹ - (x² - x¹)y¹ = 0 - //A = (y¹ - y²); B = (x² - x¹); C = (y² - y¹)x¹ - (x² - x¹)y¹ - //perpendicular distance of point (x³,y³) = (Ax³ + By³ + C)/Sqrt(A² + B²) - //see http://en.wikipedia.org/wiki/Perpendicular_distance - double A = double(ln1.Y - ln2.Y); - double B = double(ln2.X - ln1.X); - double C = A * ln1.X + B * ln1.Y; - C = A * pt.X + B * pt.Y - C; - return (C * C) / (A * A + B * B); -} -//--------------------------------------------------------------------------- - -bool SlopesNearCollinear(const IntPoint& pt1, - const IntPoint& pt2, const IntPoint& pt3, double distSqrd) -{ - //this function is more accurate when the point that's geometrically - //between the other 2 points is the one that's tested for distance. - //ie makes it more likely to pick up 'spikes' ... - if (Abs(pt1.X - pt2.X) > Abs(pt1.Y - pt2.Y)) - { - if ((pt1.X > pt2.X) == (pt1.X < pt3.X)) - return DistanceFromLineSqrd(pt1, pt2, pt3) < distSqrd; - else if ((pt2.X > pt1.X) == (pt2.X < pt3.X)) - return DistanceFromLineSqrd(pt2, pt1, pt3) < distSqrd; - else - return DistanceFromLineSqrd(pt3, pt1, pt2) < distSqrd; - } - else - { - if ((pt1.Y > pt2.Y) == (pt1.Y < pt3.Y)) - return DistanceFromLineSqrd(pt1, pt2, pt3) < distSqrd; - else if ((pt2.Y > pt1.Y) == (pt2.Y < pt3.Y)) - return DistanceFromLineSqrd(pt2, pt1, pt3) < distSqrd; - else - return DistanceFromLineSqrd(pt3, pt1, pt2) < distSqrd; - } -} -//------------------------------------------------------------------------------ - -bool PointsAreClose(IntPoint pt1, IntPoint pt2, double distSqrd) -{ - double Dx = (double)pt1.X - pt2.X; - double dy = (double)pt1.Y - pt2.Y; - return ((Dx * Dx) + (dy * dy) <= distSqrd); -} -//------------------------------------------------------------------------------ - -OutPt* ExcludeOp(OutPt* op) -{ - OutPt* result = op->Prev; - result->Next = op->Next; - op->Next->Prev = result; - result->Idx = 0; - return result; -} -//------------------------------------------------------------------------------ - -void CleanPolygon(const Path& in_poly, Path& out_poly, double distance) -{ - //distance = proximity in units/pixels below which vertices - //will be stripped. Default ~= sqrt(2). - - size_t size = in_poly.size(); - - if (size == 0) - { - out_poly.clear(); - return; - } - - OutPt* outPts = new OutPt[size]; - for (size_t i = 0; i < size; ++i) - { - outPts[i].Pt = in_poly[i]; - outPts[i].Next = &outPts[(i + 1) % size]; - outPts[i].Next->Prev = &outPts[i]; - outPts[i].Idx = 0; - } - - double distSqrd = distance * distance; - OutPt* op = &outPts[0]; - while (op->Idx == 0 && op->Next != op->Prev) - { - if (PointsAreClose(op->Pt, op->Prev->Pt, distSqrd)) - { - op = ExcludeOp(op); - size--; - } - else if (PointsAreClose(op->Prev->Pt, op->Next->Pt, distSqrd)) - { - ExcludeOp(op->Next); - op = ExcludeOp(op); - size -= 2; - } - else if (SlopesNearCollinear(op->Prev->Pt, op->Pt, op->Next->Pt, distSqrd)) - { - op = ExcludeOp(op); - size--; - } - else - { - op->Idx = 1; - op = op->Next; - } - } - - if (size < 3) size = 0; - out_poly.resize(size); - for (size_t i = 0; i < size; ++i) - { - out_poly[i] = op->Pt; - op = op->Next; - } - delete [] outPts; -} -//------------------------------------------------------------------------------ - -void CleanPolygon(Path& poly, double distance) -{ - CleanPolygon(poly, poly, distance); -} -//------------------------------------------------------------------------------ - -void CleanPolygons(const Paths& in_polys, Paths& out_polys, double distance) -{ - out_polys.resize(in_polys.size()); - for (Paths::size_type i = 0; i < in_polys.size(); ++i) - CleanPolygon(in_polys[i], out_polys[i], distance); -} -//------------------------------------------------------------------------------ - -void CleanPolygons(Paths& polys, double distance) -{ - CleanPolygons(polys, polys, distance); -} -//------------------------------------------------------------------------------ - -void Minkowski(const Path& poly, const Path& path, - Paths& solution, bool isSum, bool isClosed) -{ - int delta = (isClosed ? 1 : 0); - size_t polyCnt = poly.size(); - size_t pathCnt = path.size(); - Paths pp; - pp.reserve(pathCnt); - if (isSum) - for (size_t i = 0; i < pathCnt; ++i) - { - Path p; - p.reserve(polyCnt); - for (size_t j = 0; j < poly.size(); ++j) - p.push_back(IntPoint(path[i].X + poly[j].X, path[i].Y + poly[j].Y)); - pp.push_back(p); - } - else - for (size_t i = 0; i < pathCnt; ++i) - { - Path p; - p.reserve(polyCnt); - for (size_t j = 0; j < poly.size(); ++j) - p.push_back(IntPoint(path[i].X - poly[j].X, path[i].Y - poly[j].Y)); - pp.push_back(p); - } - - solution.clear(); - solution.reserve((pathCnt + delta) * (polyCnt + 1)); - for (size_t i = 0; i < pathCnt - 1 + delta; ++i) - for (size_t j = 0; j < polyCnt; ++j) - { - Path quad; - quad.reserve(4); - quad.push_back(pp[i % pathCnt][j % polyCnt]); - quad.push_back(pp[(i + 1) % pathCnt][j % polyCnt]); - quad.push_back(pp[(i + 1) % pathCnt][(j + 1) % polyCnt]); - quad.push_back(pp[i % pathCnt][(j + 1) % polyCnt]); - if (!Orientation(quad)) ReversePath(quad); - solution.push_back(quad); - } -} -//------------------------------------------------------------------------------ - -void MinkowskiSum(const Path& pattern, const Path& path, Paths& solution, bool pathIsClosed) -{ - Minkowski(pattern, path, solution, true, pathIsClosed); - Clipper c; - c.AddPaths(solution, ptSubject, true); - c.Execute(ctUnion, solution, pftNonZero, pftNonZero); -} -//------------------------------------------------------------------------------ - -void TranslatePath(const Path& input, Path& output, const IntPoint delta) -{ - //precondition: input != output - output.resize(input.size()); - for (size_t i = 0; i < input.size(); ++i) - output[i] = IntPoint(input[i].X + delta.X, input[i].Y + delta.Y); -} -//------------------------------------------------------------------------------ - -void MinkowskiSum(const Path& pattern, const Paths& paths, Paths& solution, bool pathIsClosed) -{ - Clipper c; - for (size_t i = 0; i < paths.size(); ++i) - { - Paths tmp; - Minkowski(pattern, paths[i], tmp, true, pathIsClosed); - c.AddPaths(tmp, ptSubject, true); - if (pathIsClosed) - { - Path tmp2; - TranslatePath(paths[i], tmp2, pattern[0]); - c.AddPath(tmp2, ptClip, true); - } - } - c.Execute(ctUnion, solution, pftNonZero, pftNonZero); -} -//------------------------------------------------------------------------------ - -void MinkowskiDiff(const Path& poly1, const Path& poly2, Paths& solution) -{ - Minkowski(poly1, poly2, solution, false, true); - Clipper c; - c.AddPaths(solution, ptSubject, true); - c.Execute(ctUnion, solution, pftNonZero, pftNonZero); -} -//------------------------------------------------------------------------------ - -enum NodeType {ntAny, ntOpen, ntClosed}; - -void AddPolyNodeToPaths(const PolyNode& polynode, NodeType nodetype, Paths& paths) -{ - bool match = true; - if (nodetype == ntClosed) match = !polynode.IsOpen(); - else if (nodetype == ntOpen) return; - - if (!polynode.Contour.empty() && match) - paths.push_back(polynode.Contour); - for (int i = 0; i < polynode.ChildCount(); ++i) - AddPolyNodeToPaths(*polynode.Childs[i], nodetype, paths); -} -//------------------------------------------------------------------------------ - -void PolyTreeToPaths(const PolyTree& polytree, Paths& paths) -{ - paths.resize(0); - paths.reserve(polytree.Total()); - AddPolyNodeToPaths(polytree, ntAny, paths); -} -//------------------------------------------------------------------------------ - -void ClosedPathsFromPolyTree(const PolyTree& polytree, Paths& paths) -{ - paths.resize(0); - paths.reserve(polytree.Total()); - AddPolyNodeToPaths(polytree, ntClosed, paths); -} -//------------------------------------------------------------------------------ - -void OpenPathsFromPolyTree(PolyTree& polytree, Paths& paths) -{ - paths.resize(0); - paths.reserve(polytree.Total()); - //Open paths are top level only, so ... - for (int i = 0; i < polytree.ChildCount(); ++i) - if (polytree.Childs[i]->IsOpen()) - paths.push_back(polytree.Childs[i]->Contour); -} -//------------------------------------------------------------------------------ - -std::ostream& operator <<(std::ostream &s, const IntPoint &p) -{ - s << "(" << p.X << "," << p.Y << ")"; - return s; -} -//------------------------------------------------------------------------------ - -std::ostream& operator <<(std::ostream &s, const Path &p) -{ - if (p.empty()) return s; - Path::size_type last = p.size() -1; - for (Path::size_type i = 0; i < last; i++) - s << "(" << p[i].X << "," << p[i].Y << "), "; - s << "(" << p[last].X << "," << p[last].Y << ")\n"; - return s; -} -//------------------------------------------------------------------------------ - -std::ostream& operator <<(std::ostream &s, const Paths &p) -{ - for (Paths::size_type i = 0; i < p.size(); i++) - s << p[i]; - s << "\n"; - return s; -} -//------------------------------------------------------------------------------ - -} //QtClipperLib namespace diff --git a/src/3rdparty/clipper/clipper.h b/src/3rdparty/clipper/clipper.h deleted file mode 100644 index de4a540d..00000000 --- a/src/3rdparty/clipper/clipper.h +++ /dev/null @@ -1,404 +0,0 @@ -/******************************************************************************* -* * -* Author : Angus Johnson * -* Version : 6.4.2 * -* Date : 27 February 2017 * -* Website : http://www.angusj.com * -* Copyright : Angus Johnson 2010-2017 * -* * -* License: * -* Use, modification & distribution is subject to Boost Software License Ver 1. * -* http://www.boost.org/LICENSE_1_0.txt * -* * -* Attributions: * -* The code in this library is an extension of Bala Vatti's clipping algorithm: * -* "A generic solution to polygon clipping" * -* Communications of the ACM, Vol 35, Issue 7 (July 1992) pp 56-63. * -* http://portal.acm.org/citation.cfm?id=129906 * -* * -* Computer graphics and geometric modeling: implementation and algorithms * -* By Max K. Agoston * -* Springer; 1 edition (January 4, 2005) * -* http://books.google.com/books?q=vatti+clipping+agoston * -* * -* See also: * -* "Polygon Offsetting by Computing Winding Numbers" * -* Paper no. DETC2005-85513 pp. 565-575 * -* ASME 2005 International Design Engineering Technical Conferences * -* and Computers and Information in Engineering Conference (IDETC/CIE2005) * -* September 24-28, 2005 , Long Beach, California, USA * -* http://www.me.berkeley.edu/~mcmains/pubs/DAC05OffsetPolygon.pdf * -* * -*******************************************************************************/ - -#ifndef clipper_hpp -#define clipper_hpp - -#define CLIPPER_VERSION "6.4.2" - -//use_int32: When enabled 32bit ints are used instead of 64bit ints. This -//improve performance but coordinate values are limited to the range +/- 46340 -//#define use_int32 - -//use_xyz: adds a Z member to IntPoint. Adds a minor cost to perfomance. -//#define use_xyz - -//use_lines: Enables line clipping. Adds a very minor cost to performance. -#define use_lines - -//use_deprecated: Enables temporary support for the obsolete functions -//#define use_deprecated - -#include <vector> -#include <list> -#include <set> -#include <stdexcept> -#include <cstring> -#include <cstdlib> -#include <ostream> -#include <functional> -#include <queue> - -namespace QtClipperLib { - -enum ClipType { ctIntersection, ctUnion, ctDifference, ctXor }; -enum PolyType { ptSubject, ptClip }; -//By far the most widely used winding rules for polygon filling are -//EvenOdd & NonZero (GDI, GDI+, XLib, OpenGL, Cairo, AGG, Quartz, SVG, Gr32) -//Others rules include Positive, Negative and ABS_GTR_EQ_TWO (only in OpenGL) -//see http://glprogramming.com/red/chapter11.html -enum PolyFillType { pftEvenOdd, pftNonZero, pftPositive, pftNegative }; - -#ifdef use_int32 - typedef int cInt; - static cInt const loRange = 0x7FFF; - static cInt const hiRange = 0x7FFF; -#else - typedef signed long long cInt; - static cInt const loRange = 0x3FFFFFFF; - static cInt const hiRange = 0x3FFFFFFFFFFFFFFFLL; - typedef signed long long long64; //used by Int128 class - typedef unsigned long long ulong64; - -#endif - -struct IntPoint { - cInt X; - cInt Y; -#ifdef use_xyz - cInt Z; - IntPoint(cInt x = 0, cInt y = 0, cInt z = 0): X(x), Y(y), Z(z) {}; -#else - IntPoint(cInt x = 0, cInt y = 0): X(x), Y(y) {}; -#endif - - friend inline bool operator== (const IntPoint& a, const IntPoint& b) - { - return a.X == b.X && a.Y == b.Y; - } - friend inline bool operator!= (const IntPoint& a, const IntPoint& b) - { - return a.X != b.X || a.Y != b.Y; - } -}; -//------------------------------------------------------------------------------ - -typedef std::vector< IntPoint > Path; -typedef std::vector< Path > Paths; - -inline Path& operator <<(Path& poly, const IntPoint& p) {poly.push_back(p); return poly;} -inline Paths& operator <<(Paths& polys, const Path& p) {polys.push_back(p); return polys;} - -std::ostream& operator <<(std::ostream &s, const IntPoint &p); -std::ostream& operator <<(std::ostream &s, const Path &p); -std::ostream& operator <<(std::ostream &s, const Paths &p); - -struct DoublePoint -{ - double X; - double Y; - DoublePoint(double x = 0, double y = 0) : X(x), Y(y) {} - DoublePoint(IntPoint ip) : X((double)ip.X), Y((double)ip.Y) {} -}; -//------------------------------------------------------------------------------ - -#ifdef use_xyz -typedef void (*ZFillCallback)(IntPoint& e1bot, IntPoint& e1top, IntPoint& e2bot, IntPoint& e2top, IntPoint& pt); -#endif - -enum InitOptions {ioReverseSolution = 1, ioStrictlySimple = 2, ioPreserveCollinear = 4}; -enum JoinType {jtSquare, jtRound, jtMiter}; -enum EndType {etClosedPolygon, etClosedLine, etOpenButt, etOpenSquare, etOpenRound}; - -class PolyNode; -typedef std::vector< PolyNode* > PolyNodes; - -class PolyNode -{ -public: - PolyNode(); - virtual ~PolyNode(){}; - Path Contour; - PolyNodes Childs; - PolyNode* Parent; - PolyNode* GetNext() const; - bool IsHole() const; - bool IsOpen() const; - int ChildCount() const; -private: - unsigned Index; //node index in Parent.Childs - bool m_IsOpen; - JoinType m_jointype; - EndType m_endtype; - PolyNode* GetNextSiblingUp() const; - void AddChild(PolyNode& child); - friend class Clipper; //to access Index - friend class ClipperOffset; -}; - -class PolyTree: public PolyNode -{ -public: - ~PolyTree(){ Clear(); }; - PolyNode* GetFirst() const; - void Clear(); - int Total() const; -private: - PolyNodes AllNodes; - friend class Clipper; //to access AllNodes -}; - -bool Orientation(const Path &poly); -double Area(const Path &poly); -int PointInPolygon(const IntPoint &pt, const Path &path); - -void SimplifyPolygon(const Path &in_poly, Paths &out_polys, PolyFillType fillType = pftEvenOdd); -void SimplifyPolygons(const Paths &in_polys, Paths &out_polys, PolyFillType fillType = pftEvenOdd); -void SimplifyPolygons(Paths &polys, PolyFillType fillType = pftEvenOdd); - -void CleanPolygon(const Path& in_poly, Path& out_poly, double distance = 1.415); -void CleanPolygon(Path& poly, double distance = 1.415); -void CleanPolygons(const Paths& in_polys, Paths& out_polys, double distance = 1.415); -void CleanPolygons(Paths& polys, double distance = 1.415); - -void MinkowskiSum(const Path& pattern, const Path& path, Paths& solution, bool pathIsClosed); -void MinkowskiSum(const Path& pattern, const Paths& paths, Paths& solution, bool pathIsClosed); -void MinkowskiDiff(const Path& poly1, const Path& poly2, Paths& solution); - -void PolyTreeToPaths(const PolyTree& polytree, Paths& paths); -void ClosedPathsFromPolyTree(const PolyTree& polytree, Paths& paths); -void OpenPathsFromPolyTree(PolyTree& polytree, Paths& paths); - -void ReversePath(Path& p); -void ReversePaths(Paths& p); - -struct IntRect { cInt left; cInt top; cInt right; cInt bottom; }; - -//enums that are used internally ... -enum EdgeSide { esLeft = 1, esRight = 2}; - -//forward declarations (for stuff used internally) ... -struct TEdge; -struct IntersectNode; -struct LocalMinimum; -struct OutPt; -struct OutRec; -struct Join; - -typedef std::vector < OutRec* > PolyOutList; -typedef std::vector < TEdge* > EdgeList; -typedef std::vector < Join* > JoinList; -typedef std::vector < IntersectNode* > IntersectList; - -//------------------------------------------------------------------------------ - -//ClipperBase is the ancestor to the Clipper class. It should not be -//instantiated directly. This class simply abstracts the conversion of sets of -//polygon coordinates into edge objects that are stored in a LocalMinima list. -class ClipperBase -{ -public: - ClipperBase(); - virtual ~ClipperBase(); - virtual bool AddPath(const Path &pg, PolyType PolyTyp, bool Closed); - bool AddPaths(const Paths &ppg, PolyType PolyTyp, bool Closed); - virtual void Clear(); - IntRect GetBounds(); - bool PreserveCollinear() {return m_PreserveCollinear;}; - void PreserveCollinear(bool value) {m_PreserveCollinear = value;}; -protected: - void DisposeLocalMinimaList(); - TEdge* AddBoundsToLML(TEdge *e, bool IsClosed); - virtual void Reset(); - TEdge* ProcessBound(TEdge* E, bool IsClockwise); - void InsertScanbeam(const cInt Y); - bool PopScanbeam(cInt &Y); - bool LocalMinimaPending(); - bool PopLocalMinima(cInt Y, const LocalMinimum *&locMin); - OutRec* CreateOutRec(); - void DisposeAllOutRecs(); - void DisposeOutRec(PolyOutList::size_type index); - void SwapPositionsInAEL(TEdge *edge1, TEdge *edge2); - void DeleteFromAEL(TEdge *e); - void UpdateEdgeIntoAEL(TEdge *&e); - - typedef std::vector<LocalMinimum> MinimaList; - MinimaList::iterator m_CurrentLM; - MinimaList m_MinimaList; - - bool m_UseFullRange; - EdgeList m_edges; - bool m_PreserveCollinear; - bool m_HasOpenPaths; - PolyOutList m_PolyOuts; - TEdge *m_ActiveEdges; - - typedef std::priority_queue<cInt> ScanbeamList; - ScanbeamList m_Scanbeam; -}; -//------------------------------------------------------------------------------ - -class Clipper : public virtual ClipperBase -{ -public: - Clipper(int initOptions = 0); - bool Execute(ClipType clipType, - Paths &solution, - PolyFillType fillType = pftEvenOdd); - bool Execute(ClipType clipType, - Paths &solution, - PolyFillType subjFillType, - PolyFillType clipFillType); - bool Execute(ClipType clipType, - PolyTree &polytree, - PolyFillType fillType = pftEvenOdd); - bool Execute(ClipType clipType, - PolyTree &polytree, - PolyFillType subjFillType, - PolyFillType clipFillType); - bool ReverseSolution() { return m_ReverseOutput; }; - void ReverseSolution(bool value) {m_ReverseOutput = value;}; - bool StrictlySimple() {return m_StrictSimple;}; - void StrictlySimple(bool value) {m_StrictSimple = value;}; - //set the callback function for z value filling on intersections (otherwise Z is 0) -#ifdef use_xyz - void ZFillFunction(ZFillCallback zFillFunc); -#endif -protected: - virtual bool ExecuteInternal(); -private: - JoinList m_Joins; - JoinList m_GhostJoins; - IntersectList m_IntersectList; - ClipType m_ClipType; - typedef std::list<cInt> MaximaList; - MaximaList m_Maxima; - TEdge *m_SortedEdges; - bool m_ExecuteLocked; - PolyFillType m_ClipFillType; - PolyFillType m_SubjFillType; - bool m_ReverseOutput; - bool m_UsingPolyTree; - bool m_StrictSimple; -#ifdef use_xyz - ZFillCallback m_ZFill; //custom callback -#endif - void SetWindingCount(TEdge& edge); - bool IsEvenOddFillType(const TEdge& edge) const; - bool IsEvenOddAltFillType(const TEdge& edge) const; - void InsertLocalMinimaIntoAEL(const cInt botY); - void InsertEdgeIntoAEL(TEdge *edge, TEdge* startEdge); - void AddEdgeToSEL(TEdge *edge); - bool PopEdgeFromSEL(TEdge *&edge); - void CopyAELToSEL(); - void DeleteFromSEL(TEdge *e); - void SwapPositionsInSEL(TEdge *edge1, TEdge *edge2); - bool IsContributing(const TEdge& edge) const; - bool IsTopHorz(const cInt XPos); - void DoMaxima(TEdge *e); - void ProcessHorizontals(); - void ProcessHorizontal(TEdge *horzEdge); - void AddLocalMaxPoly(TEdge *e1, TEdge *e2, const IntPoint &pt); - OutPt* AddLocalMinPoly(TEdge *e1, TEdge *e2, const IntPoint &pt); - OutRec* GetOutRec(int idx); - void AppendPolygon(TEdge *e1, TEdge *e2); - void IntersectEdges(TEdge *e1, TEdge *e2, IntPoint &pt); - OutPt* AddOutPt(TEdge *e, const IntPoint &pt); - OutPt* GetLastOutPt(TEdge *e); - bool ProcessIntersections(const cInt topY); - void BuildIntersectList(const cInt topY); - void ProcessIntersectList(); - void ProcessEdgesAtTopOfScanbeam(const cInt topY); - void BuildResult(Paths& polys); - void BuildResult2(PolyTree& polytree); - void SetHoleState(TEdge *e, OutRec *outrec); - void DisposeIntersectNodes(); - bool FixupIntersectionOrder(); - void FixupOutPolygon(OutRec &outrec); - void FixupOutPolyline(OutRec &outrec); - bool IsHole(TEdge *e); - bool FindOwnerFromSplitRecs(OutRec &outRec, OutRec *&currOrfl); - void FixHoleLinkage(OutRec &outrec); - void AddJoin(OutPt *op1, OutPt *op2, const IntPoint offPt); - void ClearJoins(); - void ClearGhostJoins(); - void AddGhostJoin(OutPt *op, const IntPoint offPt); - bool JoinPoints(Join *j, OutRec* outRec1, OutRec* outRec2); - void JoinCommonEdges(); - void DoSimplePolygons(); - void FixupFirstLefts1(OutRec* OldOutRec, OutRec* NewOutRec); - void FixupFirstLefts2(OutRec* InnerOutRec, OutRec* OuterOutRec); - void FixupFirstLefts3(OutRec* OldOutRec, OutRec* NewOutRec); -#ifdef use_xyz - void SetZ(IntPoint& pt, TEdge& e1, TEdge& e2); -#endif -}; -//------------------------------------------------------------------------------ - -class ClipperOffset -{ -public: - ClipperOffset(double miterLimit = 2.0, double roundPrecision = 0.25); - ~ClipperOffset(); - void AddPath(const Path& path, JoinType joinType, EndType endType); - void AddPaths(const Paths& paths, JoinType joinType, EndType endType); - void Execute(Paths& solution, double delta); - void Execute(PolyTree& solution, double delta); - void Clear(); - double MiterLimit; - double ArcTolerance; -private: - Paths m_destPolys; - Path m_srcPoly; - Path m_destPoly; - std::vector<DoublePoint> m_normals; - double m_delta, m_sinA, m_sin, m_cos; - double m_miterLim, m_StepsPerRad; - IntPoint m_lowest; - PolyNode m_polyNodes; - - void FixOrientations(); - void DoOffset(double delta); - void OffsetPoint(int j, int& k, JoinType jointype); - void DoSquare(int j, int k); - void DoMiter(int j, int k, double r); - void DoRound(int j, int k); -}; -//------------------------------------------------------------------------------ - -class clipperException : public std::exception -{ - public: - clipperException(const char* description): m_descr(description) {} - virtual ~clipperException() throw() {} - const char* what() const throw() override {return m_descr.c_str();} - private: - std::string m_descr; -}; -//------------------------------------------------------------------------------ - -} //QtClipperLib namespace - -#endif //clipper_hpp - - diff --git a/src/3rdparty/clipper/clipper.pro b/src/3rdparty/clipper/clipper.pro deleted file mode 100644 index a518d248..00000000 --- a/src/3rdparty/clipper/clipper.pro +++ /dev/null @@ -1,16 +0,0 @@ -TARGET = qt_clipper - -CONFIG += staticlib exceptions warn_off optimize_full - -load(qt_helper_lib) - -# workaround for QTBUG-31586 -contains(QT_CONFIG, c++11): CONFIG += c++11 - -gcc { - QMAKE_CFLAGS_OPTIMIZE_FULL += -ffast-math - !clang:!intel_icc:!rim_qcc: QMAKE_CXXFLAGS_WARN_ON += -Wno-error=return-type -} - -HEADERS += clipper.h -SOURCES += clipper.cpp diff --git a/src/3rdparty/clipper/qt_attribution.json b/src/3rdparty/clipper/qt_attribution.json deleted file mode 100644 index cc00a496..00000000 --- a/src/3rdparty/clipper/qt_attribution.json +++ /dev/null @@ -1,13 +0,0 @@ -{ - "Id": "clipper", - "Name": "Clipper Polygon Clipping Library", - "QDocModule": "qtpositioning", - "QtUsage": "Used in the QML plugin of Qt Location and in Qt Positioning.", - "Description": "The Clipper library performs line & polygon clipping - intersection, union, difference & exclusive-or, and line & polygon offsetting.", - "Homepage": "http://www.angusj.com/delphi/clipper.php", - "Version": "6.4.2", - "LicenseId": "BSL-1.0", - "License": "Boost Software License 1.0", - "LicenseFile": "LICENSE", - "Copyright": "Copyright Angus Johnson 2010-2017" -} diff --git a/src/3rdparty/poly2tri/AUTHORS b/src/3rdparty/poly2tri/AUTHORS deleted file mode 100644 index d8f4899f..00000000 --- a/src/3rdparty/poly2tri/AUTHORS +++ /dev/null @@ -1,8 +0,0 @@ -Primary Contributors: - - Mason Green <mason.green@gmail.com> (C++, Python) - Thomas Ã…hlén <thahlen@gmail.com> (Java) - -Other Contributors: - - diff --git a/src/3rdparty/poly2tri/CMakeLists.txt b/src/3rdparty/poly2tri/CMakeLists.txt deleted file mode 100644 index 167485db..00000000 --- a/src/3rdparty/poly2tri/CMakeLists.txt +++ /dev/null @@ -1,30 +0,0 @@ -# Generated from poly2tri.pro. - -##################################################################### -## Bundled_Poly2Tri Generic Library: -##################################################################### - -qt_internal_add_3rdparty_library(Bundled_Poly2Tri - QMAKE_LIB_NAME _poly2tri - STATIC - SKIP_AUTOMOC # special case - SOURCES - common/shapes.cpp common/shapes.h - common/utils.h - poly2tri.h - sweep/advancing_front.cpp sweep/advancing_front.h - sweep/cdt.cpp sweep/cdt.h - sweep/sweep.cpp sweep/sweep.h - sweep/sweep_context.cpp sweep/sweep_context.h -) -qt_disable_warnings(Bundled_Poly2Tri) -qt_set_symbol_visibility_hidden(Bundled_Poly2Tri) - -## Scopes: -##################################################################### - -#### Keys ignored in scope 3:.:.:poly2tri.pro:GCC: -# QMAKE_CFLAGS_OPTIMIZE_FULL = "-ffast-math" - -#### Keys ignored in scope 4:.:.:poly2tri.pro:NOT CLANG AND NOT ICC AND NOT rim_qcc: -# QMAKE_CXXFLAGS_WARN_ON = "-Wno-error=return-type" diff --git a/src/3rdparty/poly2tri/LICENSE b/src/3rdparty/poly2tri/LICENSE deleted file mode 100644 index 9417c083..00000000 --- a/src/3rdparty/poly2tri/LICENSE +++ /dev/null @@ -1,27 +0,0 @@ -Poly2Tri Copyright (c) 2009-2010, Poly2Tri Contributors -http://code.google.com/p/poly2tri/ - -All rights reserved. -Redistribution and use in source and binary forms, with or without modification, -are permitted provided that the following conditions are met: - -* Redistributions of source code must retain the above copyright notice, - this list of conditions and the following disclaimer. -* Redistributions in binary form must reproduce the above copyright notice, - this list of conditions and the following disclaimer in the documentation - and/or other materials provided with the distribution. -* Neither the name of Poly2Tri nor the names of its contributors may be - used to endorse or promote products derived from this software without specific - prior written permission. - -THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR -CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, -EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, -PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR -PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF -LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING -NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS -SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. diff --git a/src/3rdparty/poly2tri/common/shapes.cpp b/src/3rdparty/poly2tri/common/shapes.cpp deleted file mode 100644 index 2ac7e979..00000000 --- a/src/3rdparty/poly2tri/common/shapes.cpp +++ /dev/null @@ -1,363 +0,0 @@ -/* - * Poly2Tri Copyright (c) 2009-2010, Poly2Tri Contributors - * http://code.google.com/p/poly2tri/ - * - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without modification, - * are permitted provided that the following conditions are met: - * - * * Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * * Neither the name of Poly2Tri nor the names of its contributors may be - * used to endorse or promote products derived from this software without specific - * prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ -#include "shapes.h" -#include <iostream> - -namespace p2t { - -Triangle::Triangle(Point& a, Point& b, Point& c) -{ - points_[0] = &a; points_[1] = &b; points_[2] = &c; - neighbors_[0] = NULL; neighbors_[1] = NULL; neighbors_[2] = NULL; - constrained_edge[0] = constrained_edge[1] = constrained_edge[2] = false; - delaunay_edge[0] = delaunay_edge[1] = delaunay_edge[2] = false; - interior_ = false; -} - -// Update neighbor pointers -void Triangle::MarkNeighbor(Point* p1, Point* p2, Triangle* t) -{ - if ((p1 == points_[2] && p2 == points_[1]) || (p1 == points_[1] && p2 == points_[2])) - neighbors_[0] = t; - else if ((p1 == points_[0] && p2 == points_[2]) || (p1 == points_[2] && p2 == points_[0])) - neighbors_[1] = t; - else if ((p1 == points_[0] && p2 == points_[1]) || (p1 == points_[1] && p2 == points_[0])) - neighbors_[2] = t; - else - assert(0); -} - -// Exhaustive search to update neighbor pointers -void Triangle::MarkNeighbor(Triangle& t) -{ - if (t.Contains(points_[1], points_[2])) { - neighbors_[0] = &t; - t.MarkNeighbor(points_[1], points_[2], this); - } else if (t.Contains(points_[0], points_[2])) { - neighbors_[1] = &t; - t.MarkNeighbor(points_[0], points_[2], this); - } else if (t.Contains(points_[0], points_[1])) { - neighbors_[2] = &t; - t.MarkNeighbor(points_[0], points_[1], this); - } -} - -/** - * Clears all references to all other triangles and points - */ -void Triangle::Clear() -{ - Triangle *t; - for (int i=0; i<3; i++) - { - t = neighbors_[i]; - if (t != NULL) - { - t->ClearNeighbor( this ); - } - } - ClearNeighbors(); - points_[0]=points_[1]=points_[2] = NULL; -} - -void Triangle::ClearNeighbor(Triangle *triangle ) -{ - if (neighbors_[0] == triangle) - { - neighbors_[0] = NULL; - } - else if (neighbors_[1] == triangle) - { - neighbors_[1] = NULL; - } - else - { - neighbors_[2] = NULL; - } -} - -void Triangle::ClearNeighbors() -{ - neighbors_[0] = NULL; - neighbors_[1] = NULL; - neighbors_[2] = NULL; -} - -void Triangle::ClearDelunayEdges() -{ - delaunay_edge[0] = delaunay_edge[1] = delaunay_edge[2] = false; -} - -Point* Triangle::OppositePoint(Triangle& t, Point& p) -{ - Point *cw = t.PointCW(p); - return PointCW(*cw); -} - -// Legalized triangle by rotating clockwise around point(0) -void Triangle::Legalize(Point& point) -{ - points_[1] = points_[0]; - points_[0] = points_[2]; - points_[2] = &point; -} - -// Legalize triagnle by rotating clockwise around oPoint -void Triangle::Legalize(Point& opoint, Point& npoint) -{ - if (&opoint == points_[0]) { - points_[1] = points_[0]; - points_[0] = points_[2]; - points_[2] = &npoint; - } else if (&opoint == points_[1]) { - points_[2] = points_[1]; - points_[1] = points_[0]; - points_[0] = &npoint; - } else if (&opoint == points_[2]) { - points_[0] = points_[2]; - points_[2] = points_[1]; - points_[1] = &npoint; - } else { - assert(0); - } -} - -int Triangle::Index(const Point* p) -{ - if (p == points_[0]) { - return 0; - } else if (p == points_[1]) { - return 1; - } else if (p == points_[2]) { - return 2; - } - assert(0); -} - -int Triangle::EdgeIndex(const Point* p1, const Point* p2) -{ - if (points_[0] == p1) { - if (points_[1] == p2) { - return 2; - } else if (points_[2] == p2) { - return 1; - } - } else if (points_[1] == p1) { - if (points_[2] == p2) { - return 0; - } else if (points_[0] == p2) { - return 2; - } - } else if (points_[2] == p1) { - if (points_[0] == p2) { - return 1; - } else if (points_[1] == p2) { - return 0; - } - } - return -1; -} - -void Triangle::MarkConstrainedEdge(const int index) -{ - constrained_edge[index] = true; -} - -void Triangle::MarkConstrainedEdge(Edge& edge) -{ - MarkConstrainedEdge(edge.p, edge.q); -} - -// Mark edge as constrained -void Triangle::MarkConstrainedEdge(Point* p, Point* q) -{ - if ((q == points_[0] && p == points_[1]) || (q == points_[1] && p == points_[0])) { - constrained_edge[2] = true; - } else if ((q == points_[0] && p == points_[2]) || (q == points_[2] && p == points_[0])) { - constrained_edge[1] = true; - } else if ((q == points_[1] && p == points_[2]) || (q == points_[2] && p == points_[1])) { - constrained_edge[0] = true; - } -} - -// The point counter-clockwise to given point -Point* Triangle::PointCW(Point& point) -{ - if (&point == points_[0]) { - return points_[2]; - } else if (&point == points_[1]) { - return points_[0]; - } else if (&point == points_[2]) { - return points_[1]; - } - assert(0); -} - -// The point counter-clockwise to given point -Point* Triangle::PointCCW(Point& point) -{ - if (&point == points_[0]) { - return points_[1]; - } else if (&point == points_[1]) { - return points_[2]; - } else if (&point == points_[2]) { - return points_[0]; - } - assert(0); -} - -// The neighbor clockwise to given point -Triangle* Triangle::NeighborCW(Point& point) -{ - if (&point == points_[0]) { - return neighbors_[1]; - } else if (&point == points_[1]) { - return neighbors_[2]; - } - return neighbors_[0]; -} - -// The neighbor counter-clockwise to given point -Triangle* Triangle::NeighborCCW(Point& point) -{ - if (&point == points_[0]) { - return neighbors_[2]; - } else if (&point == points_[1]) { - return neighbors_[0]; - } - return neighbors_[1]; -} - -bool Triangle::GetConstrainedEdgeCCW(Point& p) -{ - if (&p == points_[0]) { - return constrained_edge[2]; - } else if (&p == points_[1]) { - return constrained_edge[0]; - } - return constrained_edge[1]; -} - -bool Triangle::GetConstrainedEdgeCW(Point& p) -{ - if (&p == points_[0]) { - return constrained_edge[1]; - } else if (&p == points_[1]) { - return constrained_edge[2]; - } - return constrained_edge[0]; -} - -void Triangle::SetConstrainedEdgeCCW(Point& p, bool ce) -{ - if (&p == points_[0]) { - constrained_edge[2] = ce; - } else if (&p == points_[1]) { - constrained_edge[0] = ce; - } else { - constrained_edge[1] = ce; - } -} - -void Triangle::SetConstrainedEdgeCW(Point& p, bool ce) -{ - if (&p == points_[0]) { - constrained_edge[1] = ce; - } else if (&p == points_[1]) { - constrained_edge[2] = ce; - } else { - constrained_edge[0] = ce; - } -} - -bool Triangle::GetDelunayEdgeCCW(Point& p) -{ - if (&p == points_[0]) { - return delaunay_edge[2]; - } else if (&p == points_[1]) { - return delaunay_edge[0]; - } - return delaunay_edge[1]; -} - -bool Triangle::GetDelunayEdgeCW(Point& p) -{ - if (&p == points_[0]) { - return delaunay_edge[1]; - } else if (&p == points_[1]) { - return delaunay_edge[2]; - } - return delaunay_edge[0]; -} - -void Triangle::SetDelunayEdgeCCW(Point& p, bool e) -{ - if (&p == points_[0]) { - delaunay_edge[2] = e; - } else if (&p == points_[1]) { - delaunay_edge[0] = e; - } else { - delaunay_edge[1] = e; - } -} - -void Triangle::SetDelunayEdgeCW(Point& p, bool e) -{ - if (&p == points_[0]) { - delaunay_edge[1] = e; - } else if (&p == points_[1]) { - delaunay_edge[2] = e; - } else { - delaunay_edge[0] = e; - } -} - -// The neighbor across to given point -Triangle& Triangle::NeighborAcross(Point& opoint) -{ - if (&opoint == points_[0]) { - return *neighbors_[0]; - } else if (&opoint == points_[1]) { - return *neighbors_[1]; - } - return *neighbors_[2]; -} - -void Triangle::DebugPrint() -{ - using namespace std; - cout << points_[0]->x << "," << points_[0]->y << " "; - cout << points_[1]->x << "," << points_[1]->y << " "; - cout << points_[2]->x << "," << points_[2]->y << endl; -} - -} - diff --git a/src/3rdparty/poly2tri/common/shapes.h b/src/3rdparty/poly2tri/common/shapes.h deleted file mode 100644 index 5b90ea6c..00000000 --- a/src/3rdparty/poly2tri/common/shapes.h +++ /dev/null @@ -1,325 +0,0 @@ -/* - * Poly2Tri Copyright (c) 2009-2010, Poly2Tri Contributors - * http://code.google.com/p/poly2tri/ - * - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without modification, - * are permitted provided that the following conditions are met: - * - * * Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * * Neither the name of Poly2Tri nor the names of its contributors may be - * used to endorse or promote products derived from this software without specific - * prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -// Include guard -#ifndef SHAPES_H -#define SHAPES_H - -#include <vector> -#include <cstddef> -#include <assert.h> -#include <cmath> - -namespace p2t { - -struct Edge; - -struct Point { - - double x, y; - - /// Default constructor does nothing (for performance). - Point() - { - x = 0.0; - y = 0.0; - } - - /// The edges this point constitutes an upper ending point - std::vector<Edge*> edge_list; - - /// Construct using coordinates. - Point(double x, double y) : x(x), y(y) {} - - /// Set this point to all zeros. - void set_zero() - { - x = 0.0; - y = 0.0; - } - - /// Set this point to some specified coordinates. - void set(double x_, double y_) - { - x = x_; - y = y_; - } - - /// Negate this point. - Point operator -() const - { - Point v; - v.set(-x, -y); - return v; - } - - /// Add a point to this point. - void operator +=(const Point& v) - { - x += v.x; - y += v.y; - } - - /// Subtract a point from this point. - void operator -=(const Point& v) - { - x -= v.x; - y -= v.y; - } - - /// Multiply this point by a scalar. - void operator *=(double a) - { - x *= a; - y *= a; - } - - /// Get the length of this point (the norm). - double Length() const - { - return std::sqrt(x * x + y * y); - } - - /// Convert this point into a unit point. Returns the Length. - double Normalize() - { - double len = Length(); - x /= len; - y /= len; - return len; - } - -}; - -// Represents a simple polygon's edge -struct Edge { - - Point* p, *q; - - /// Constructor - Edge(Point& p1, Point& p2) : p(&p1), q(&p2) - { - if (p1.y > p2.y) { - q = &p1; - p = &p2; - } else if (p1.y == p2.y) { - if (p1.x > p2.x) { - q = &p1; - p = &p2; - } else if (p1.x == p2.x) { - // Repeat points - assert(false); - } - } - - q->edge_list.push_back(this); - } -}; - -// Triangle-based data structures are know to have better performance than quad-edge structures -// See: J. Shewchuk, "Triangle: Engineering a 2D Quality Mesh Generator and Delaunay Triangulator" -// "Triangulations in CGAL" -class Triangle { -public: - -/// Constructor -Triangle(Point& a, Point& b, Point& c); - -/// Flags to determine if an edge is a Constrained edge -bool constrained_edge[3]; -/// Flags to determine if an edge is a Delauney edge -bool delaunay_edge[3]; - -Point* GetPoint(const int& index); -Point* PointCW(Point& point); -Point* PointCCW(Point& point); -Point* OppositePoint(Triangle& t, Point& p); - -Triangle* GetNeighbor(const int& index); -void MarkNeighbor(Point* p1, Point* p2, Triangle* t); -void MarkNeighbor(Triangle& t); - -void MarkConstrainedEdge(const int index); -void MarkConstrainedEdge(Edge& edge); -void MarkConstrainedEdge(Point* p, Point* q); - -int Index(const Point* p); -int EdgeIndex(const Point* p1, const Point* p2); - -Triangle* NeighborCW(Point& point); -Triangle* NeighborCCW(Point& point); -bool GetConstrainedEdgeCCW(Point& p); -bool GetConstrainedEdgeCW(Point& p); -void SetConstrainedEdgeCCW(Point& p, bool ce); -void SetConstrainedEdgeCW(Point& p, bool ce); -bool GetDelunayEdgeCCW(Point& p); -bool GetDelunayEdgeCW(Point& p); -void SetDelunayEdgeCCW(Point& p, bool e); -void SetDelunayEdgeCW(Point& p, bool e); - -bool Contains(Point* p); -bool Contains(const Edge& e); -bool Contains(Point* p, Point* q); -void Legalize(Point& point); -void Legalize(Point& opoint, Point& npoint); -/** - * Clears all references to all other triangles and points - */ -void Clear(); -void ClearNeighbor(Triangle *triangle ); -void ClearNeighbors(); -void ClearDelunayEdges(); - -inline bool IsInterior(); -inline void IsInterior(bool b); - -Triangle& NeighborAcross(Point& opoint); - -void DebugPrint(); - -private: - -/// Triangle points -Point* points_[3]; -/// Neighbor list -Triangle* neighbors_[3]; - -/// Has this triangle been marked as an interior triangle? -bool interior_; -}; - -inline bool cmp(const Point* a, const Point* b) -{ - if (a->y < b->y) { - return true; - } else if (a->y == b->y) { - // Make sure q is point with greater x value - if (a->x < b->x) { - return true; - } - } - return false; -} - -/// Add two points_ component-wise. -inline Point operator +(const Point& a, const Point& b) -{ - return Point(a.x + b.x, a.y + b.y); -} - -/// Subtract two points_ component-wise. -inline Point operator -(const Point& a, const Point& b) -{ - return Point(a.x - b.x, a.y - b.y); -} - -/// Multiply point by scalar -inline Point operator *(double s, const Point& a) -{ - return Point(s * a.x, s * a.y); -} - -inline bool operator ==(const Point& a, const Point& b) -{ - return a.x == b.x && a.y == b.y; -} - -inline bool operator !=(const Point& a, const Point& b) -{ - return !(a.x == b.x) && !(a.y == b.y); -} - -/// Peform the dot product on two vectors. -inline double Dot(const Point& a, const Point& b) -{ - return a.x * b.x + a.y * b.y; -} - -/// Perform the cross product on two vectors. In 2D this produces a scalar. -inline double Cross(const Point& a, const Point& b) -{ - return a.x * b.y - a.y * b.x; -} - -/// Perform the cross product on a point and a scalar. In 2D this produces -/// a point. -inline Point Cross(const Point& a, double s) -{ - return Point(s * a.y, -s * a.x); -} - -/// Perform the cross product on a scalar and a point. In 2D this produces -/// a point. -inline Point Cross(const double s, const Point& a) -{ - return Point(-s * a.y, s * a.x); -} - -inline Point* Triangle::GetPoint(const int& index) -{ - return points_[index]; -} - -inline Triangle* Triangle::GetNeighbor(const int& index) -{ - return neighbors_[index]; -} - -inline bool Triangle::Contains(Point* p) -{ - return p == points_[0] || p == points_[1] || p == points_[2]; -} - -inline bool Triangle::Contains(const Edge& e) -{ - return Contains(e.p) && Contains(e.q); -} - -inline bool Triangle::Contains(Point* p, Point* q) -{ - return Contains(p) && Contains(q); -} - -inline bool Triangle::IsInterior() -{ - return interior_; -} - -inline void Triangle::IsInterior(bool b) -{ - interior_ = b; -} - -} - -#endif - - diff --git a/src/3rdparty/poly2tri/common/utils.h b/src/3rdparty/poly2tri/common/utils.h deleted file mode 100644 index 8744b6d2..00000000 --- a/src/3rdparty/poly2tri/common/utils.h +++ /dev/null @@ -1,127 +0,0 @@ -/* - * Poly2Tri Copyright (c) 2009-2010, Poly2Tri Contributors - * http://code.google.com/p/poly2tri/ - * - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without modification, - * are permitted provided that the following conditions are met: - * - * * Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * * Neither the name of Poly2Tri nor the names of its contributors may be - * used to endorse or promote products derived from this software without specific - * prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#ifndef UTILS_H -#define UTILS_H - -// Otherwise #defines like M_PI are undeclared under Visual Studio -#define _USE_MATH_DEFINES - -#include <exception> -#include <math.h> - -#ifndef M_PI -#define M_PI (3.14159265358979323846) -#endif - -namespace p2t { - -const double PI_3div4 = 3 * M_PI / 4; -const double PI_div2 = 1.57079632679489661923; -const double EPSILON = 1e-12; - -enum Orientation { CW, CCW, COLLINEAR }; - -/** - * Forumla to calculate signed area<br> - * Positive if CCW<br> - * Negative if CW<br> - * 0 if collinear<br> - * <pre> - * A[P1,P2,P3] = (x1*y2 - y1*x2) + (x2*y3 - y2*x3) + (x3*y1 - y3*x1) - * = (x1-x3)*(y2-y3) - (y1-y3)*(x2-x3) - * </pre> - */ -Orientation Orient2d(Point& pa, Point& pb, Point& pc) -{ - double detleft = (pa.x - pc.x) * (pb.y - pc.y); - double detright = (pa.y - pc.y) * (pb.x - pc.x); - double val = detleft - detright; - if (val > -EPSILON && val < EPSILON) { - return COLLINEAR; - } else if (val > 0) { - return CCW; - } - return CW; -} - -/* -bool InScanArea(Point& pa, Point& pb, Point& pc, Point& pd) -{ - double pdx = pd.x; - double pdy = pd.y; - double adx = pa.x - pdx; - double ady = pa.y - pdy; - double bdx = pb.x - pdx; - double bdy = pb.y - pdy; - - double adxbdy = adx * bdy; - double bdxady = bdx * ady; - double oabd = adxbdy - bdxady; - - if (oabd <= EPSILON) { - return false; - } - - double cdx = pc.x - pdx; - double cdy = pc.y - pdy; - - double cdxady = cdx * ady; - double adxcdy = adx * cdy; - double ocad = cdxady - adxcdy; - - if (ocad <= EPSILON) { - return false; - } - - return true; -} - -*/ - -bool InScanArea(Point& pa, Point& pb, Point& pc, Point& pd) -{ - double oadb = (pa.x - pb.x)*(pd.y - pb.y) - (pd.x - pb.x)*(pa.y - pb.y); - if (oadb >= -EPSILON) { - return false; - } - - double oadc = (pa.x - pc.x)*(pd.y - pc.y) - (pd.x - pc.x)*(pa.y - pc.y); - if (oadc <= EPSILON) { - return false; - } - return true; -} - -} - -#endif - diff --git a/src/3rdparty/poly2tri/poly2tri.h b/src/3rdparty/poly2tri/poly2tri.h deleted file mode 100644 index 042cb3dc..00000000 --- a/src/3rdparty/poly2tri/poly2tri.h +++ /dev/null @@ -1,39 +0,0 @@ -/* - * Poly2Tri Copyright (c) 2009-2010, Poly2Tri Contributors - * http://code.google.com/p/poly2tri/ - * - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without modification, - * are permitted provided that the following conditions are met: - * - * * Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * * Neither the name of Poly2Tri nor the names of its contributors may be - * used to endorse or promote products derived from this software without specific - * prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#ifndef POLY2TRI_H -#define POLY2TRI_H - -#include "common/shapes.h" -#include "sweep/cdt.h" - -#endif - diff --git a/src/3rdparty/poly2tri/poly2tri.pro b/src/3rdparty/poly2tri/poly2tri.pro deleted file mode 100644 index 6c5f7692..00000000 --- a/src/3rdparty/poly2tri/poly2tri.pro +++ /dev/null @@ -1,27 +0,0 @@ -TARGET = qt_poly2tri - -CONFIG += staticlib warn_off optimize_full - -load(qt_helper_lib) - -# workaround for QTBUG-31586 -contains(QT_CONFIG, c++11): CONFIG += c++11 - -gcc { - QMAKE_CFLAGS_OPTIMIZE_FULL += -ffast-math - !clang:!intel_icc:!rim_qcc: QMAKE_CXXFLAGS_WARN_ON += -Wno-error=return-type -} - -HEADERS += poly2tri.h \ - common/shapes.h \ - common/utils.h \ - sweep/advancing_front.h \ - sweep/cdt.h \ - sweep/sweep.h \ - sweep/sweep_context.h - -SOURCES += common/shapes.cpp \ - sweep/sweep_context.cpp \ - sweep/cdt.cpp \ - sweep/sweep.cpp \ - sweep/advancing_front.cpp diff --git a/src/3rdparty/poly2tri/qt_attribution.json b/src/3rdparty/poly2tri/qt_attribution.json deleted file mode 100644 index 0571384d..00000000 --- a/src/3rdparty/poly2tri/qt_attribution.json +++ /dev/null @@ -1,13 +0,0 @@ -{ - "Id": "poly2tri", - "Name": "Poly2Tri Polygon Triangulation Library", - "QDocModule": "qtpositioning", - "QtUsage": "Used in the QML plugin of Qt Location and in Qt Positioning.", - - "Description": "Poly2Tri is a sweepline constrained Delaunay Polygon Triangulation Library.", - "Homepage": "https://github.com/greenm01/poly2tri", - "LicenseId": "BSD-3-Clause", - "License": "BSD 3-clause \"New\" or \"Revised\" License", - "LicenseFile": "LICENSE", - "Copyright": "Poly2Tri Copyright (c) 2009-2010, Poly2Tri Contributors" -} diff --git a/src/3rdparty/poly2tri/sweep/advancing_front.cpp b/src/3rdparty/poly2tri/sweep/advancing_front.cpp deleted file mode 100644 index 03779840..00000000 --- a/src/3rdparty/poly2tri/sweep/advancing_front.cpp +++ /dev/null @@ -1,109 +0,0 @@ -/* - * Poly2Tri Copyright (c) 2009-2010, Poly2Tri Contributors - * http://code.google.com/p/poly2tri/ - * - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without modification, - * are permitted provided that the following conditions are met: - * - * * Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * * Neither the name of Poly2Tri nor the names of its contributors may be - * used to endorse or promote products derived from this software without specific - * prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ -#include "advancing_front.h" - -namespace p2t { - -AdvancingFront::AdvancingFront(Node& head, Node& tail) -{ - head_ = &head; - tail_ = &tail; - search_node_ = &head; -} - -Node* AdvancingFront::LocateNode(const double& x) -{ - Node* node = search_node_; - - if (x < node->value) { - while ((node = node->prev) != NULL) { - if (x >= node->value) { - search_node_ = node; - return node; - } - } - } else { - while ((node = node->next) != NULL) { - if (x < node->value) { - search_node_ = node->prev; - return node->prev; - } - } - } - return NULL; -} - -Node* AdvancingFront::FindSearchNode(const double& x) -{ - (void)x; // suppress compiler warnings "unused parameter 'x'" - // TODO: implement BST index - return search_node_; -} - -Node* AdvancingFront::LocatePoint(const Point* point) -{ - const double px = point->x; - Node* node = FindSearchNode(px); - const double nx = node->point->x; - - if (px == nx) { - if (point != node->point) { - // We might have two nodes with same x value for a short time - if (point == node->prev->point) { - node = node->prev; - } else if (point == node->next->point) { - node = node->next; - } else { - assert(0); - } - } - } else if (px < nx) { - while ((node = node->prev) != NULL) { - if (point == node->point) { - break; - } - } - } else { - while ((node = node->next) != NULL) { - if (point == node->point) - break; - } - } - if (node) search_node_ = node; - return node; -} - -AdvancingFront::~AdvancingFront() -{ -} - -} - diff --git a/src/3rdparty/poly2tri/sweep/advancing_front.h b/src/3rdparty/poly2tri/sweep/advancing_front.h deleted file mode 100644 index bab73d44..00000000 --- a/src/3rdparty/poly2tri/sweep/advancing_front.h +++ /dev/null @@ -1,118 +0,0 @@ -/* - * Poly2Tri Copyright (c) 2009-2010, Poly2Tri Contributors - * http://code.google.com/p/poly2tri/ - * - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without modification, - * are permitted provided that the following conditions are met: - * - * * Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * * Neither the name of Poly2Tri nor the names of its contributors may be - * used to endorse or promote products derived from this software without specific - * prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#ifndef ADVANCED_FRONT_H -#define ADVANCED_FRONT_H - -#include "../common/shapes.h" - -namespace p2t { - -struct Node; - -// Advancing front node -struct Node { - Point* point; - Triangle* triangle; - - Node* next; - Node* prev; - - double value; - - Node(Point& p) : point(&p), triangle(NULL), next(NULL), prev(NULL), value(p.x) - { - } - - Node(Point& p, Triangle& t) : point(&p), triangle(&t), next(NULL), prev(NULL), value(p.x) - { - } - -}; - -// Advancing front -class AdvancingFront { -public: - -AdvancingFront(Node& head, Node& tail); -// Destructor -~AdvancingFront(); - -Node* head(); -void set_head(Node* node); -Node* tail(); -void set_tail(Node* node); -Node* search(); -void set_search(Node* node); - -/// Locate insertion point along advancing front -Node* LocateNode(const double& x); - -Node* LocatePoint(const Point* point); - -private: - -Node* head_, *tail_, *search_node_; - -Node* FindSearchNode(const double& x); -}; - -inline Node* AdvancingFront::head() -{ - return head_; -} -inline void AdvancingFront::set_head(Node* node) -{ - head_ = node; -} - -inline Node* AdvancingFront::tail() -{ - return tail_; -} -inline void AdvancingFront::set_tail(Node* node) -{ - tail_ = node; -} - -inline Node* AdvancingFront::search() -{ - return search_node_; -} - -inline void AdvancingFront::set_search(Node* node) -{ - search_node_ = node; -} - -} - -#endif diff --git a/src/3rdparty/poly2tri/sweep/cdt.cpp b/src/3rdparty/poly2tri/sweep/cdt.cpp deleted file mode 100644 index e0b3ec79..00000000 --- a/src/3rdparty/poly2tri/sweep/cdt.cpp +++ /dev/null @@ -1,72 +0,0 @@ -/* - * Poly2Tri Copyright (c) 2009-2010, Poly2Tri Contributors - * http://code.google.com/p/poly2tri/ - * - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without modification, - * are permitted provided that the following conditions are met: - * - * * Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * * Neither the name of Poly2Tri nor the names of its contributors may be - * used to endorse or promote products derived from this software without specific - * prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ -#include "cdt.h" - -namespace p2t { - -CDT::CDT(std::vector<Point*> polyline) -{ - sweep_context_ = new SweepContext(polyline); - sweep_ = new Sweep; -} - -void CDT::AddHole(std::vector<Point*> polyline) -{ - sweep_context_->AddHole(polyline); -} - -void CDT::AddPoint(Point* point) { - sweep_context_->AddPoint(point); -} - -void CDT::Triangulate() -{ - sweep_->Triangulate(*sweep_context_); -} - -std::vector<p2t::Triangle*> CDT::GetTriangles() -{ - return sweep_context_->GetTriangles(); -} - -std::list<p2t::Triangle*> CDT::GetMap() -{ - return sweep_context_->GetMap(); -} - -CDT::~CDT() -{ - delete sweep_context_; - delete sweep_; -} - -} - diff --git a/src/3rdparty/poly2tri/sweep/cdt.h b/src/3rdparty/poly2tri/sweep/cdt.h deleted file mode 100644 index e7b703de..00000000 --- a/src/3rdparty/poly2tri/sweep/cdt.h +++ /dev/null @@ -1,105 +0,0 @@ -/* - * Poly2Tri Copyright (c) 2009-2010, Poly2Tri Contributors - * http://code.google.com/p/poly2tri/ - * - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without modification, - * are permitted provided that the following conditions are met: - * - * * Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * * Neither the name of Poly2Tri nor the names of its contributors may be - * used to endorse or promote products derived from this software without specific - * prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#ifndef CDT_H -#define CDT_H - -#include "advancing_front.h" -#include "sweep_context.h" -#include "sweep.h" - -/** - * - * @author Mason Green <mason.green@gmail.com> - * - */ - -namespace p2t { - -class CDT -{ -public: - - /** - * Constructor - add polyline with non repeating points - * - * @param polyline - */ - CDT(std::vector<Point*> polyline); - - /** - * Destructor - clean up memory - */ - ~CDT(); - - /** - * Add a hole - * - * @param polyline - */ - void AddHole(std::vector<Point*> polyline); - - /** - * Add a steiner point - * - * @param point - */ - void AddPoint(Point* point); - - /** - * Triangulate - do this AFTER you've added the polyline, holes, and Steiner points - */ - void Triangulate(); - - /** - * Get CDT triangles - */ - std::vector<Triangle*> GetTriangles(); - - /** - * Get triangle map - */ - std::list<Triangle*> GetMap(); - - private: - - /** - * Internals - */ - - SweepContext* sweep_context_; - Sweep* sweep_; - -}; - -} - -#endif diff --git a/src/3rdparty/poly2tri/sweep/sweep.cpp b/src/3rdparty/poly2tri/sweep/sweep.cpp deleted file mode 100644 index 954d2db2..00000000 --- a/src/3rdparty/poly2tri/sweep/sweep.cpp +++ /dev/null @@ -1,814 +0,0 @@ -/* - * Poly2Tri Copyright (c) 2009-2010, Poly2Tri Contributors - * http://code.google.com/p/poly2tri/ - * - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without modification, - * are permitted provided that the following conditions are met: - * - * * Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * * Neither the name of Poly2Tri nor the names of its contributors may be - * used to endorse or promote products derived from this software without specific - * prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ -#include <stddef.h> -#include <stdexcept> -#include "sweep.h" -#include "sweep_context.h" -#include "advancing_front.h" -#include "../common/utils.h" - -namespace p2t { - -// Triangulate simple polygon with holes -void Sweep::Triangulate(SweepContext& tcx) -{ - tcx.InitTriangulation(); - tcx.CreateAdvancingFront(nodes_); - // Sweep points; build mesh - SweepPoints(tcx); - // Clean up - FinalizationPolygon(tcx); -} - -void Sweep::SweepPoints(SweepContext& tcx) -{ - for (int i = 1; i < tcx.point_count(); i++) { - Point& point = *tcx.GetPoint(i); - Node* node = &PointEvent(tcx, point); - for (unsigned int i = 0; i < point.edge_list.size(); i++) { - EdgeEvent(tcx, point.edge_list[i], node); - } - } -} - -void Sweep::FinalizationPolygon(SweepContext& tcx) -{ - // Get an Internal triangle to start with - Triangle* t = tcx.front()->head()->next->triangle; - Point* p = tcx.front()->head()->next->point; - while (!t->GetConstrainedEdgeCW(*p)) { - t = t->NeighborCCW(*p); - } - - // Collect interior triangles constrained by edges - tcx.MeshClean(*t); -} - -Node& Sweep::PointEvent(SweepContext& tcx, Point& point) -{ - Node& node = tcx.LocateNode(point); - Node& new_node = NewFrontTriangle(tcx, point, node); - - // Only need to check +epsilon since point never have smaller - // x value than node due to how we fetch nodes from the front - if (point.x <= node.point->x + EPSILON) { - Fill(tcx, node); - } - - //tcx.AddNode(new_node); - - FillAdvancingFront(tcx, new_node); - return new_node; -} - -void Sweep::EdgeEvent(SweepContext& tcx, Edge* edge, Node* node) -{ - tcx.edge_event.constrained_edge = edge; - tcx.edge_event.right = (edge->p->x > edge->q->x); - - if (IsEdgeSideOfTriangle(*node->triangle, *edge->p, *edge->q)) { - return; - } - - // For now we will do all needed filling - // TODO: integrate with flip process might give some better performance - // but for now this avoid the issue with cases that needs both flips and fills - FillEdgeEvent(tcx, edge, node); - EdgeEvent(tcx, *edge->p, *edge->q, node->triangle, *edge->q); -} - -void Sweep::EdgeEvent(SweepContext& tcx, Point& ep, Point& eq, Triangle* triangle, Point& point) -{ - if (IsEdgeSideOfTriangle(*triangle, ep, eq)) { - return; - } - - Point* p1 = triangle->PointCCW(point); - Orientation o1 = Orient2d(eq, *p1, ep); - if (o1 == COLLINEAR) { - if ( triangle->Contains(&eq, p1)) { - triangle->MarkConstrainedEdge(&eq, p1 ); - // We are modifying the constraint maybe it would be better to - // not change the given constraint and just keep a variable for the new constraint - tcx.edge_event.constrained_edge->q = p1; - triangle = &triangle->NeighborAcross(point); - EdgeEvent( tcx, ep, *p1, triangle, *p1 ); - } else { - std::runtime_error("EdgeEvent - collinear points not supported"); - assert(0); - } - return; - } - - Point* p2 = triangle->PointCW(point); - Orientation o2 = Orient2d(eq, *p2, ep); - if (o2 == COLLINEAR) { - if ( triangle->Contains(&eq, p2)) { - triangle->MarkConstrainedEdge(&eq, p2 ); - // We are modifying the constraint maybe it would be better to - // not change the given constraint and just keep a variable for the new constraint - tcx.edge_event.constrained_edge->q = p2; - triangle = &triangle->NeighborAcross(point); - EdgeEvent( tcx, ep, *p2, triangle, *p2 ); - } else { - std::runtime_error("EdgeEvent - collinear points not supported"); - assert(0); - } - return; - } - - if (o1 == o2) { - // Need to decide if we are rotating CW or CCW to get to a triangle - // that will cross edge - if (o1 == CW) { - triangle = triangle->NeighborCCW(point); - } else{ - triangle = triangle->NeighborCW(point); - } - EdgeEvent(tcx, ep, eq, triangle, point); - } else { - // This triangle crosses constraint so lets flippin start! - FlipEdgeEvent(tcx, ep, eq, triangle, point); - } -} - -bool Sweep::IsEdgeSideOfTriangle(Triangle& triangle, Point& ep, Point& eq) -{ - int index = triangle.EdgeIndex(&ep, &eq); - - if (index != -1) { - triangle.MarkConstrainedEdge(index); - Triangle* t = triangle.GetNeighbor(index); - if (t) { - t->MarkConstrainedEdge(&ep, &eq); - } - return true; - } - return false; -} - -Node& Sweep::NewFrontTriangle(SweepContext& tcx, Point& point, Node& node) -{ - Triangle* triangle = new Triangle(point, *node.point, *node.next->point); - - triangle->MarkNeighbor(*node.triangle); - tcx.AddToMap(triangle); - - Node* new_node = new Node(point); - nodes_.push_back(new_node); - - new_node->next = node.next; - new_node->prev = &node; - node.next->prev = new_node; - node.next = new_node; - - if (!Legalize(tcx, *triangle)) { - tcx.MapTriangleToNodes(*triangle); - } - - return *new_node; -} - -void Sweep::Fill(SweepContext& tcx, Node& node) -{ - Triangle* triangle = new Triangle(*node.prev->point, *node.point, *node.next->point); - - // TODO: should copy the constrained_edge value from neighbor triangles - // for now constrained_edge values are copied during the legalize - triangle->MarkNeighbor(*node.prev->triangle); - triangle->MarkNeighbor(*node.triangle); - - tcx.AddToMap(triangle); - - // Update the advancing front - node.prev->next = node.next; - node.next->prev = node.prev; - - // If it was legalized the triangle has already been mapped - if (!Legalize(tcx, *triangle)) { - tcx.MapTriangleToNodes(*triangle); - } - -} - -void Sweep::FillAdvancingFront(SweepContext& tcx, Node& n) -{ - - // Fill right holes - Node* node = n.next; - - while (node->next) { - // if HoleAngle exceeds 90 degrees then break. - if (LargeHole_DontFill(node)) break; - Fill(tcx, *node); - node = node->next; - } - - // Fill left holes - node = n.prev; - - while (node->prev) { - // if HoleAngle exceeds 90 degrees then break. - if (LargeHole_DontFill(node)) break; - Fill(tcx, *node); - node = node->prev; - } - - // Fill right basins - if (n.next && n.next->next) { - double angle = BasinAngle(n); - if (angle < PI_3div4) { - FillBasin(tcx, n); - } - } -} - -// True if HoleAngle exceeds 90 degrees. -bool Sweep::LargeHole_DontFill(Node* node) { - - Node* nextNode = node->next; - Node* prevNode = node->prev; - if (!AngleExceeds90Degrees(node->point, nextNode->point, prevNode->point)) - return false; - - // Check additional points on front. - Node* next2Node = nextNode->next; - // "..Plus.." because only want angles on same side as point being added. - if ((next2Node != NULL) && !AngleExceedsPlus90DegreesOrIsNegative(node->point, next2Node->point, prevNode->point)) - return false; - - Node* prev2Node = prevNode->prev; - // "..Plus.." because only want angles on same side as point being added. - if ((prev2Node != NULL) && !AngleExceedsPlus90DegreesOrIsNegative(node->point, nextNode->point, prev2Node->point)) - return false; - - return true; -} - -bool Sweep::AngleExceeds90Degrees(Point* origin, Point* pa, Point* pb) { - double angle = Angle(*origin, *pa, *pb); - bool exceeds90Degrees = ((angle > PI_div2) || (angle < -PI_div2)); - return exceeds90Degrees; -} - -bool Sweep::AngleExceedsPlus90DegreesOrIsNegative(Point* origin, Point* pa, Point* pb) { - double angle = Angle(*origin, *pa, *pb); - bool exceedsPlus90DegreesOrIsNegative = (angle > PI_div2) || (angle < 0); - return exceedsPlus90DegreesOrIsNegative; -} - -double Sweep::Angle(Point& origin, Point& pa, Point& pb) { - /* Complex plane - * ab = cosA +i*sinA - * ab = (ax + ay*i)(bx + by*i) = (ax*bx + ay*by) + i(ax*by-ay*bx) - * atan2(y,x) computes the principal value of the argument function - * applied to the complex number x+iy - * Where x = ax*bx + ay*by - * y = ax*by - ay*bx - */ - double px = origin.x; - double py = origin.y; - double ax = pa.x- px; - double ay = pa.y - py; - double bx = pb.x - px; - double by = pb.y - py; - double x = ax * by - ay * bx; - double y = ax * bx + ay * by; - double angle = atan2(x, y); - return angle; -} - -double Sweep::BasinAngle(Node& node) -{ - double ax = node.point->x - node.next->next->point->x; - double ay = node.point->y - node.next->next->point->y; - return atan2(ay, ax); -} - -double Sweep::HoleAngle(Node& node) -{ - /* Complex plane - * ab = cosA +i*sinA - * ab = (ax + ay*i)(bx + by*i) = (ax*bx + ay*by) + i(ax*by-ay*bx) - * atan2(y,x) computes the principal value of the argument function - * applied to the complex number x+iy - * Where x = ax*bx + ay*by - * y = ax*by - ay*bx - */ - double ax = node.next->point->x - node.point->x; - double ay = node.next->point->y - node.point->y; - double bx = node.prev->point->x - node.point->x; - double by = node.prev->point->y - node.point->y; - return atan2(ax * by - ay * bx, ax * bx + ay * by); -} - -bool Sweep::Legalize(SweepContext& tcx, Triangle& t) -{ - // To legalize a triangle we start by finding if any of the three edges - // violate the Delaunay condition - for (int i = 0; i < 3; i++) { - if (t.delaunay_edge[i]) - continue; - - Triangle* ot = t.GetNeighbor(i); - - if (ot) { - Point* p = t.GetPoint(i); - Point* op = ot->OppositePoint(t, *p); - int oi = ot->Index(op); - - // If this is a Constrained Edge or a Delaunay Edge(only during recursive legalization) - // then we should not try to legalize - if (ot->constrained_edge[oi] || ot->delaunay_edge[oi]) { - t.constrained_edge[i] = ot->constrained_edge[oi]; - continue; - } - - bool inside = Incircle(*p, *t.PointCCW(*p), *t.PointCW(*p), *op); - - if (inside) { - // Lets mark this shared edge as Delaunay - t.delaunay_edge[i] = true; - ot->delaunay_edge[oi] = true; - - // Lets rotate shared edge one vertex CW to legalize it - RotateTrianglePair(t, *p, *ot, *op); - - // We now got one valid Delaunay Edge shared by two triangles - // This gives us 4 new edges to check for Delaunay - - // Make sure that triangle to node mapping is done only one time for a specific triangle - bool not_legalized = !Legalize(tcx, t); - if (not_legalized) { - tcx.MapTriangleToNodes(t); - } - - not_legalized = !Legalize(tcx, *ot); - if (not_legalized) - tcx.MapTriangleToNodes(*ot); - - // Reset the Delaunay edges, since they only are valid Delaunay edges - // until we add a new triangle or point. - // XXX: need to think about this. Can these edges be tried after we - // return to previous recursive level? - t.delaunay_edge[i] = false; - ot->delaunay_edge[oi] = false; - - // If triangle have been legalized no need to check the other edges since - // the recursive legalization will handles those so we can end here. - return true; - } - } - } - return false; -} - -bool Sweep::Incircle(Point& pa, Point& pb, Point& pc, Point& pd) -{ - double adx = pa.x - pd.x; - double ady = pa.y - pd.y; - double bdx = pb.x - pd.x; - double bdy = pb.y - pd.y; - - double adxbdy = adx * bdy; - double bdxady = bdx * ady; - double oabd = adxbdy - bdxady; - - if (oabd <= 0) - return false; - - double cdx = pc.x - pd.x; - double cdy = pc.y - pd.y; - - double cdxady = cdx * ady; - double adxcdy = adx * cdy; - double ocad = cdxady - adxcdy; - - if (ocad <= 0) - return false; - - double bdxcdy = bdx * cdy; - double cdxbdy = cdx * bdy; - - double alift = adx * adx + ady * ady; - double blift = bdx * bdx + bdy * bdy; - double clift = cdx * cdx + cdy * cdy; - - double det = alift * (bdxcdy - cdxbdy) + blift * ocad + clift * oabd; - - return det > 0; -} - -void Sweep::RotateTrianglePair(Triangle& t, Point& p, Triangle& ot, Point& op) -{ - Triangle* n1, *n2, *n3, *n4; - n1 = t.NeighborCCW(p); - n2 = t.NeighborCW(p); - n3 = ot.NeighborCCW(op); - n4 = ot.NeighborCW(op); - - bool ce1, ce2, ce3, ce4; - ce1 = t.GetConstrainedEdgeCCW(p); - ce2 = t.GetConstrainedEdgeCW(p); - ce3 = ot.GetConstrainedEdgeCCW(op); - ce4 = ot.GetConstrainedEdgeCW(op); - - bool de1, de2, de3, de4; - de1 = t.GetDelunayEdgeCCW(p); - de2 = t.GetDelunayEdgeCW(p); - de3 = ot.GetDelunayEdgeCCW(op); - de4 = ot.GetDelunayEdgeCW(op); - - t.Legalize(p, op); - ot.Legalize(op, p); - - // Remap delaunay_edge - ot.SetDelunayEdgeCCW(p, de1); - t.SetDelunayEdgeCW(p, de2); - t.SetDelunayEdgeCCW(op, de3); - ot.SetDelunayEdgeCW(op, de4); - - // Remap constrained_edge - ot.SetConstrainedEdgeCCW(p, ce1); - t.SetConstrainedEdgeCW(p, ce2); - t.SetConstrainedEdgeCCW(op, ce3); - ot.SetConstrainedEdgeCW(op, ce4); - - // Remap neighbors - // XXX: might optimize the markNeighbor by keeping track of - // what side should be assigned to what neighbor after the - // rotation. Now mark neighbor does lots of testing to find - // the right side. - t.ClearNeighbors(); - ot.ClearNeighbors(); - if (n1) ot.MarkNeighbor(*n1); - if (n2) t.MarkNeighbor(*n2); - if (n3) t.MarkNeighbor(*n3); - if (n4) ot.MarkNeighbor(*n4); - t.MarkNeighbor(ot); -} - -void Sweep::FillBasin(SweepContext& tcx, Node& node) -{ - if (Orient2d(*node.point, *node.next->point, *node.next->next->point) == CCW) { - tcx.basin.left_node = node.next->next; - } else { - tcx.basin.left_node = node.next; - } - - // Find the bottom and right node - tcx.basin.bottom_node = tcx.basin.left_node; - while (tcx.basin.bottom_node->next - && tcx.basin.bottom_node->point->y >= tcx.basin.bottom_node->next->point->y) { - tcx.basin.bottom_node = tcx.basin.bottom_node->next; - } - if (tcx.basin.bottom_node == tcx.basin.left_node) { - // No valid basin - return; - } - - tcx.basin.right_node = tcx.basin.bottom_node; - while (tcx.basin.right_node->next - && tcx.basin.right_node->point->y < tcx.basin.right_node->next->point->y) { - tcx.basin.right_node = tcx.basin.right_node->next; - } - if (tcx.basin.right_node == tcx.basin.bottom_node) { - // No valid basins - return; - } - - tcx.basin.width = tcx.basin.right_node->point->x - tcx.basin.left_node->point->x; - tcx.basin.left_highest = tcx.basin.left_node->point->y > tcx.basin.right_node->point->y; - - FillBasinReq(tcx, tcx.basin.bottom_node); -} - -void Sweep::FillBasinReq(SweepContext& tcx, Node* node) -{ - // if shallow stop filling - if (IsShallow(tcx, *node)) { - return; - } - - Fill(tcx, *node); - - if (node->prev == tcx.basin.left_node && node->next == tcx.basin.right_node) { - return; - } else if (node->prev == tcx.basin.left_node) { - Orientation o = Orient2d(*node->point, *node->next->point, *node->next->next->point); - if (o == CW) { - return; - } - node = node->next; - } else if (node->next == tcx.basin.right_node) { - Orientation o = Orient2d(*node->point, *node->prev->point, *node->prev->prev->point); - if (o == CCW) { - return; - } - node = node->prev; - } else { - // Continue with the neighbor node with lowest Y value - if (node->prev->point->y < node->next->point->y) { - node = node->prev; - } else { - node = node->next; - } - } - - FillBasinReq(tcx, node); -} - -bool Sweep::IsShallow(SweepContext& tcx, Node& node) -{ - double height; - - if (tcx.basin.left_highest) { - height = tcx.basin.left_node->point->y - node.point->y; - } else { - height = tcx.basin.right_node->point->y - node.point->y; - } - - // if shallow stop filling - if (tcx.basin.width > height) { - return true; - } - return false; -} - -void Sweep::FillEdgeEvent(SweepContext& tcx, Edge* edge, Node* node) -{ - if (tcx.edge_event.right) { - FillRightAboveEdgeEvent(tcx, edge, node); - } else { - FillLeftAboveEdgeEvent(tcx, edge, node); - } -} - -void Sweep::FillRightAboveEdgeEvent(SweepContext& tcx, Edge* edge, Node* node) -{ - while (node->next->point->x < edge->p->x) { - // Check if next node is below the edge - if (Orient2d(*edge->q, *node->next->point, *edge->p) == CCW) { - FillRightBelowEdgeEvent(tcx, edge, *node); - } else { - node = node->next; - } - } -} - -void Sweep::FillRightBelowEdgeEvent(SweepContext& tcx, Edge* edge, Node& node) -{ - if (node.point->x < edge->p->x) { - if (Orient2d(*node.point, *node.next->point, *node.next->next->point) == CCW) { - // Concave - FillRightConcaveEdgeEvent(tcx, edge, node); - } else{ - // Convex - FillRightConvexEdgeEvent(tcx, edge, node); - // Retry this one - FillRightBelowEdgeEvent(tcx, edge, node); - } - } -} - -void Sweep::FillRightConcaveEdgeEvent(SweepContext& tcx, Edge* edge, Node& node) -{ - Fill(tcx, *node.next); - if (node.next->point != edge->p) { - // Next above or below edge? - if (Orient2d(*edge->q, *node.next->point, *edge->p) == CCW) { - // Below - if (Orient2d(*node.point, *node.next->point, *node.next->next->point) == CCW) { - // Next is concave - FillRightConcaveEdgeEvent(tcx, edge, node); - } else { - // Next is convex - } - } - } - -} - -void Sweep::FillRightConvexEdgeEvent(SweepContext& tcx, Edge* edge, Node& node) -{ - // Next concave or convex? - if (Orient2d(*node.next->point, *node.next->next->point, *node.next->next->next->point) == CCW) { - // Concave - FillRightConcaveEdgeEvent(tcx, edge, *node.next); - } else{ - // Convex - // Next above or below edge? - if (Orient2d(*edge->q, *node.next->next->point, *edge->p) == CCW) { - // Below - FillRightConvexEdgeEvent(tcx, edge, *node.next); - } else{ - // Above - } - } -} - -void Sweep::FillLeftAboveEdgeEvent(SweepContext& tcx, Edge* edge, Node* node) -{ - while (node->prev->point->x > edge->p->x) { - // Check if next node is below the edge - if (Orient2d(*edge->q, *node->prev->point, *edge->p) == CW) { - FillLeftBelowEdgeEvent(tcx, edge, *node); - } else { - node = node->prev; - } - } -} - -void Sweep::FillLeftBelowEdgeEvent(SweepContext& tcx, Edge* edge, Node& node) -{ - if (node.point->x > edge->p->x) { - if (Orient2d(*node.point, *node.prev->point, *node.prev->prev->point) == CW) { - // Concave - FillLeftConcaveEdgeEvent(tcx, edge, node); - } else { - // Convex - FillLeftConvexEdgeEvent(tcx, edge, node); - // Retry this one - FillLeftBelowEdgeEvent(tcx, edge, node); - } - } -} - -void Sweep::FillLeftConvexEdgeEvent(SweepContext& tcx, Edge* edge, Node& node) -{ - // Next concave or convex? - if (Orient2d(*node.prev->point, *node.prev->prev->point, *node.prev->prev->prev->point) == CW) { - // Concave - FillLeftConcaveEdgeEvent(tcx, edge, *node.prev); - } else{ - // Convex - // Next above or below edge? - if (Orient2d(*edge->q, *node.prev->prev->point, *edge->p) == CW) { - // Below - FillLeftConvexEdgeEvent(tcx, edge, *node.prev); - } else{ - // Above - } - } -} - -void Sweep::FillLeftConcaveEdgeEvent(SweepContext& tcx, Edge* edge, Node& node) -{ - Fill(tcx, *node.prev); - if (node.prev->point != edge->p) { - // Next above or below edge? - if (Orient2d(*edge->q, *node.prev->point, *edge->p) == CW) { - // Below - if (Orient2d(*node.point, *node.prev->point, *node.prev->prev->point) == CW) { - // Next is concave - FillLeftConcaveEdgeEvent(tcx, edge, node); - } else{ - // Next is convex - } - } - } - -} - -void Sweep::FlipEdgeEvent(SweepContext& tcx, Point& ep, Point& eq, Triangle* t, Point& p) -{ - Triangle& ot = t->NeighborAcross(p); - Point& op = *ot.OppositePoint(*t, p); - - if (&ot == NULL) { - // If we want to integrate the fillEdgeEvent do it here - // With current implementation we should never get here - //throw new RuntimeException( "[BUG:FIXME] FLIP failed due to missing triangle"); - assert(0); - } - - if (InScanArea(p, *t->PointCCW(p), *t->PointCW(p), op)) { - // Lets rotate shared edge one vertex CW - RotateTrianglePair(*t, p, ot, op); - tcx.MapTriangleToNodes(*t); - tcx.MapTriangleToNodes(ot); - - if (p == eq && op == ep) { - if (eq == *tcx.edge_event.constrained_edge->q && ep == *tcx.edge_event.constrained_edge->p) { - t->MarkConstrainedEdge(&ep, &eq); - ot.MarkConstrainedEdge(&ep, &eq); - Legalize(tcx, *t); - Legalize(tcx, ot); - } else { - // XXX: I think one of the triangles should be legalized here? - } - } else { - Orientation o = Orient2d(eq, op, ep); - t = &NextFlipTriangle(tcx, (int)o, *t, ot, p, op); - FlipEdgeEvent(tcx, ep, eq, t, p); - } - } else { - Point& newP = NextFlipPoint(ep, eq, ot, op); - FlipScanEdgeEvent(tcx, ep, eq, *t, ot, newP); - EdgeEvent(tcx, ep, eq, t, p); - } -} - -Triangle& Sweep::NextFlipTriangle(SweepContext& tcx, int o, Triangle& t, Triangle& ot, Point& p, Point& op) -{ - if (o == CCW) { - // ot is not crossing edge after flip - int edge_index = ot.EdgeIndex(&p, &op); - ot.delaunay_edge[edge_index] = true; - Legalize(tcx, ot); - ot.ClearDelunayEdges(); - return t; - } - - // t is not crossing edge after flip - int edge_index = t.EdgeIndex(&p, &op); - - t.delaunay_edge[edge_index] = true; - Legalize(tcx, t); - t.ClearDelunayEdges(); - return ot; -} - -Point& Sweep::NextFlipPoint(Point& ep, Point& eq, Triangle& ot, Point& op) -{ - Orientation o2d = Orient2d(eq, op, ep); - if (o2d == CW) { - // Right - return *ot.PointCCW(op); - } else if (o2d == CCW) { - // Left - return *ot.PointCW(op); - } else{ - //throw new RuntimeException("[Unsupported] Opposing point on constrained edge"); - assert(0); - } -} - -void Sweep::FlipScanEdgeEvent(SweepContext& tcx, Point& ep, Point& eq, Triangle& flip_triangle, - Triangle& t, Point& p) -{ - Triangle& ot = t.NeighborAcross(p); - Point& op = *ot.OppositePoint(t, p); - - if (&t.NeighborAcross(p) == NULL) { - // If we want to integrate the fillEdgeEvent do it here - // With current implementation we should never get here - //throw new RuntimeException( "[BUG:FIXME] FLIP failed due to missing triangle"); - assert(0); - } - - if (InScanArea(eq, *flip_triangle.PointCCW(eq), *flip_triangle.PointCW(eq), op)) { - // flip with new edge op->eq - FlipEdgeEvent(tcx, eq, op, &ot, op); - // TODO: Actually I just figured out that it should be possible to - // improve this by getting the next ot and op before the above - // flip and continue the flipScanEdgeEvent here - // set new ot and op here and loop back to inScanArea test - // also need to set a new flip_triangle first - // Turns out at first glance that this is somewhat complicated - // so it will have to wait. - } else{ - Point& newP = NextFlipPoint(ep, eq, ot, op); - FlipScanEdgeEvent(tcx, ep, eq, flip_triangle, ot, newP); - } -} - -Sweep::~Sweep() { - - // Clean up memory - for (size_t i = 0; i < nodes_.size(); i++) { - delete nodes_[i]; - } - -} - -} - diff --git a/src/3rdparty/poly2tri/sweep/sweep.h b/src/3rdparty/poly2tri/sweep/sweep.h deleted file mode 100644 index 9bb0b5d8..00000000 --- a/src/3rdparty/poly2tri/sweep/sweep.h +++ /dev/null @@ -1,285 +0,0 @@ -/* - * Poly2Tri Copyright (c) 2009-2010, Poly2Tri Contributors - * http://code.google.com/p/poly2tri/ - * - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without modification, - * are permitted provided that the following conditions are met: - * - * * Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * * Neither the name of Poly2Tri nor the names of its contributors may be - * used to endorse or promote products derived from this software without specific - * prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ -/** - * Sweep-line, Constrained Delauney Triangulation (CDT) See: Domiter, V. and - * Zalik, B.(2008)'Sweep-line algorithm for constrained Delaunay triangulation', - * International Journal of Geographical Information Science - * - * "FlipScan" Constrained Edge Algorithm invented by Thomas Åhlén, thahlen@gmail.com - */ - -#ifndef SWEEP_H -#define SWEEP_H - -#include <vector> - -namespace p2t { - -class SweepContext; -struct Node; -struct Point; -struct Edge; -class Triangle; - -class Sweep -{ -public: - - /** - * Triangulate - * - * @param tcx - */ - void Triangulate(SweepContext& tcx); - - /** - * Destructor - clean up memory - */ - ~Sweep(); - -private: - - /** - * Start sweeping the Y-sorted point set from bottom to top - * - * @param tcx - */ - void SweepPoints(SweepContext& tcx); - - /** - * Find closes node to the left of the new point and - * create a new triangle. If needed new holes and basins - * will be filled to. - * - * @param tcx - * @param point - * @return - */ - Node& PointEvent(SweepContext& tcx, Point& point); - - /** - * - * - * @param tcx - * @param edge - * @param node - */ - void EdgeEvent(SweepContext& tcx, Edge* edge, Node* node); - - void EdgeEvent(SweepContext& tcx, Point& ep, Point& eq, Triangle* triangle, Point& point); - - /** - * Creates a new front triangle and legalize it - * - * @param tcx - * @param point - * @param node - * @return - */ - Node& NewFrontTriangle(SweepContext& tcx, Point& point, Node& node); - - /** - * Adds a triangle to the advancing front to fill a hole. - * @param tcx - * @param node - middle node, that is the bottom of the hole - */ - void Fill(SweepContext& tcx, Node& node); - - /** - * Returns true if triangle was legalized - */ - bool Legalize(SweepContext& tcx, Triangle& t); - - /** - * <b>Requirement</b>:<br> - * 1. a,b and c form a triangle.<br> - * 2. a and d is know to be on opposite side of bc<br> - * <pre> - * a - * + - * / \ - * / \ - * b/ \c - * +-------+ - * / d \ - * / \ - * </pre> - * <b>Fact</b>: d has to be in area B to have a chance to be inside the circle formed by - * a,b and c<br> - * d is outside B if orient2d(a,b,d) or orient2d(c,a,d) is CW<br> - * This preknowledge gives us a way to optimize the incircle test - * @param a - triangle point, opposite d - * @param b - triangle point - * @param c - triangle point - * @param d - point opposite a - * @return true if d is inside circle, false if on circle edge - */ - bool Incircle(Point& pa, Point& pb, Point& pc, Point& pd); - - /** - * Rotates a triangle pair one vertex CW - *<pre> - * n2 n2 - * P +-----+ P +-----+ - * | t /| |\ t | - * | / | | \ | - * n1| / |n3 n1| \ |n3 - * | / | after CW | \ | - * |/ oT | | oT \| - * +-----+ oP +-----+ - * n4 n4 - * </pre> - */ - void RotateTrianglePair(Triangle& t, Point& p, Triangle& ot, Point& op); - - /** - * Fills holes in the Advancing Front - * - * - * @param tcx - * @param n - */ - void FillAdvancingFront(SweepContext& tcx, Node& n); - - // Decision-making about when to Fill hole. - // Contributed by ToolmakerSteve2 - bool LargeHole_DontFill(Node* node); - bool AngleExceeds90Degrees(Point* origin, Point* pa, Point* pb); - bool AngleExceedsPlus90DegreesOrIsNegative(Point* origin, Point* pa, Point* pb); - double Angle(Point& origin, Point& pa, Point& pb); - - /** - * - * @param node - middle node - * @return the angle between 3 front nodes - */ - double HoleAngle(Node& node); - - /** - * The basin angle is decided against the horizontal line [1,0] - */ - double BasinAngle(Node& node); - - /** - * Fills a basin that has formed on the Advancing Front to the right - * of given node.<br> - * First we decide a left,bottom and right node that forms the - * boundaries of the basin. Then we do a reqursive fill. - * - * @param tcx - * @param node - starting node, this or next node will be left node - */ - void FillBasin(SweepContext& tcx, Node& node); - - /** - * Recursive algorithm to fill a Basin with triangles - * - * @param tcx - * @param node - bottom_node - * @param cnt - counter used to alternate on even and odd numbers - */ - void FillBasinReq(SweepContext& tcx, Node* node); - - bool IsShallow(SweepContext& tcx, Node& node); - - bool IsEdgeSideOfTriangle(Triangle& triangle, Point& ep, Point& eq); - - void FillEdgeEvent(SweepContext& tcx, Edge* edge, Node* node); - - void FillRightAboveEdgeEvent(SweepContext& tcx, Edge* edge, Node* node); - - void FillRightBelowEdgeEvent(SweepContext& tcx, Edge* edge, Node& node); - - void FillRightConcaveEdgeEvent(SweepContext& tcx, Edge* edge, Node& node); - - void FillRightConvexEdgeEvent(SweepContext& tcx, Edge* edge, Node& node); - - void FillLeftAboveEdgeEvent(SweepContext& tcx, Edge* edge, Node* node); - - void FillLeftBelowEdgeEvent(SweepContext& tcx, Edge* edge, Node& node); - - void FillLeftConcaveEdgeEvent(SweepContext& tcx, Edge* edge, Node& node); - - void FillLeftConvexEdgeEvent(SweepContext& tcx, Edge* edge, Node& node); - - void FlipEdgeEvent(SweepContext& tcx, Point& ep, Point& eq, Triangle* t, Point& p); - - /** - * After a flip we have two triangles and know that only one will still be - * intersecting the edge. So decide which to contiune with and legalize the other - * - * @param tcx - * @param o - should be the result of an orient2d( eq, op, ep ) - * @param t - triangle 1 - * @param ot - triangle 2 - * @param p - a point shared by both triangles - * @param op - another point shared by both triangles - * @return returns the triangle still intersecting the edge - */ - Triangle& NextFlipTriangle(SweepContext& tcx, int o, Triangle& t, Triangle& ot, Point& p, Point& op); - - /** - * When we need to traverse from one triangle to the next we need - * the point in current triangle that is the opposite point to the next - * triangle. - * - * @param ep - * @param eq - * @param ot - * @param op - * @return - */ - Point& NextFlipPoint(Point& ep, Point& eq, Triangle& ot, Point& op); - - /** - * Scan part of the FlipScan algorithm<br> - * When a triangle pair isn't flippable we will scan for the next - * point that is inside the flip triangle scan area. When found - * we generate a new flipEdgeEvent - * - * @param tcx - * @param ep - last point on the edge we are traversing - * @param eq - first point on the edge we are traversing - * @param flipTriangle - the current triangle sharing the point eq with edge - * @param t - * @param p - */ - void FlipScanEdgeEvent(SweepContext& tcx, Point& ep, Point& eq, Triangle& flip_triangle, Triangle& t, Point& p); - - void FinalizationPolygon(SweepContext& tcx); - - std::vector<Node*> nodes_; - -}; - -} - -#endif diff --git a/src/3rdparty/poly2tri/sweep/sweep_context.cpp b/src/3rdparty/poly2tri/sweep/sweep_context.cpp deleted file mode 100644 index 24dde11f..00000000 --- a/src/3rdparty/poly2tri/sweep/sweep_context.cpp +++ /dev/null @@ -1,216 +0,0 @@ -/* - * Poly2Tri Copyright (c) 2009-2010, Poly2Tri Contributors - * http://code.google.com/p/poly2tri/ - * - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without modification, - * are permitted provided that the following conditions are met: - * - * * Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * * Neither the name of Poly2Tri nor the names of its contributors may be - * used to endorse or promote products derived from this software without specific - * prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ -#include "sweep_context.h" -#include <algorithm> -#include "advancing_front.h" - -namespace p2t { - -SweepContext::SweepContext(std::vector<Point*> polyline) : - front_(0), - head_(0), - tail_(0), - af_head_(0), - af_middle_(0), - af_tail_(0) -{ - basin = Basin(); - edge_event = EdgeEvent(); - - points_ = polyline; - - InitEdges(points_); -} - -void SweepContext::AddHole(std::vector<Point*> polyline) -{ - InitEdges(polyline); - for (unsigned int i = 0; i < polyline.size(); i++) { - points_.push_back(polyline[i]); - } -} - -void SweepContext::AddPoint(Point* point) { - points_.push_back(point); -} - -std::vector<Triangle*> SweepContext::GetTriangles() -{ - return triangles_; -} - -std::list<Triangle*> SweepContext::GetMap() -{ - return map_; -} - -void SweepContext::InitTriangulation() -{ - double xmax(points_[0]->x), xmin(points_[0]->x); - double ymax(points_[0]->y), ymin(points_[0]->y); - - // Calculate bounds. - for (unsigned int i = 0; i < points_.size(); i++) { - Point& p = *points_[i]; - if (p.x > xmax) - xmax = p.x; - if (p.x < xmin) - xmin = p.x; - if (p.y > ymax) - ymax = p.y; - if (p.y < ymin) - ymin = p.y; - } - - double dx = kAlpha * (xmax - xmin); - double dy = kAlpha * (ymax - ymin); - head_ = new Point(xmax + dx, ymin - dy); - tail_ = new Point(xmin - dx, ymin - dy); - - // Sort points along y-axis - std::sort(points_.begin(), points_.end(), cmp); - -} - -void SweepContext::InitEdges(std::vector<Point*> polyline) -{ - int num_points = polyline.size(); - for (int i = 0; i < num_points; i++) { - int j = i < num_points - 1 ? i + 1 : 0; - edge_list.push_back(new Edge(*polyline[i], *polyline[j])); - } -} - -Point* SweepContext::GetPoint(const int& index) -{ - return points_[index]; -} - -void SweepContext::AddToMap(Triangle* triangle) -{ - map_.push_back(triangle); -} - -Node& SweepContext::LocateNode(Point& point) -{ - // TODO implement search tree - return *front_->LocateNode(point.x); -} - -void SweepContext::CreateAdvancingFront(std::vector<Node*> nodes) -{ - - (void) nodes; - // Initial triangle - Triangle* triangle = new Triangle(*points_[0], *tail_, *head_); - - map_.push_back(triangle); - - af_head_ = new Node(*triangle->GetPoint(1), *triangle); - af_middle_ = new Node(*triangle->GetPoint(0), *triangle); - af_tail_ = new Node(*triangle->GetPoint(2)); - front_ = new AdvancingFront(*af_head_, *af_tail_); - - // TODO: More intuitive if head is middles next and not previous? - // so swap head and tail - af_head_->next = af_middle_; - af_middle_->next = af_tail_; - af_middle_->prev = af_head_; - af_tail_->prev = af_middle_; -} - -void SweepContext::RemoveNode(Node* node) -{ - delete node; -} - -void SweepContext::MapTriangleToNodes(Triangle& t) -{ - for (int i = 0; i < 3; i++) { - if (!t.GetNeighbor(i)) { - Node* n = front_->LocatePoint(t.PointCW(*t.GetPoint(i))); - if (n) - n->triangle = &t; - } - } -} - -void SweepContext::RemoveFromMap(Triangle* triangle) -{ - map_.remove(triangle); -} - -void SweepContext::MeshClean(Triangle& triangle) -{ - std::vector<Triangle *> triangles; - triangles.push_back(&triangle); - - while(!triangles.empty()){ - Triangle *t = triangles.back(); - triangles.pop_back(); - - if (t != NULL && !t->IsInterior()) { - t->IsInterior(true); - triangles_.push_back(t); - for (int i = 0; i < 3; i++) { - if (!t->constrained_edge[i]) - triangles.push_back(t->GetNeighbor(i)); - } - } - } -} - -SweepContext::~SweepContext() -{ - - // Clean up memory - - delete head_; - delete tail_; - delete front_; - delete af_head_; - delete af_middle_; - delete af_tail_; - - typedef std::list<Triangle*> type_list; - - for (type_list::iterator iter = map_.begin(); iter != map_.end(); ++iter) { - Triangle* ptr = *iter; - delete ptr; - } - - for (unsigned int i = 0; i < edge_list.size(); i++) { - delete edge_list[i]; - } - -} - -} diff --git a/src/3rdparty/poly2tri/sweep/sweep_context.h b/src/3rdparty/poly2tri/sweep/sweep_context.h deleted file mode 100644 index c110a744..00000000 --- a/src/3rdparty/poly2tri/sweep/sweep_context.h +++ /dev/null @@ -1,186 +0,0 @@ -/* - * Poly2Tri Copyright (c) 2009-2010, Poly2Tri Contributors - * http://code.google.com/p/poly2tri/ - * - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without modification, - * are permitted provided that the following conditions are met: - * - * * Redistributions of source code must retain the above copyright notice, - * this list of conditions and the following disclaimer. - * * Redistributions in binary form must reproduce the above copyright notice, - * this list of conditions and the following disclaimer in the documentation - * and/or other materials provided with the distribution. - * * Neither the name of Poly2Tri nor the names of its contributors may be - * used to endorse or promote products derived from this software without specific - * prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, - * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF - * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING - * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS - * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#ifndef SWEEP_CONTEXT_H -#define SWEEP_CONTEXT_H - -#include <list> -#include <vector> -#include <cstddef> - -namespace p2t { - -// Initial triangle factor, seed triangle will extend 30% of -// PointSet width to both left and right. -const double kAlpha = 0.3; - -struct Point; -class Triangle; -struct Node; -struct Edge; -class AdvancingFront; - -class SweepContext { -public: - -/// Constructor -SweepContext(std::vector<Point*> polyline); -/// Destructor -~SweepContext(); - -void set_head(Point* p1); - -Point* head(); - -void set_tail(Point* p1); - -Point* tail(); - -int point_count(); - -Node& LocateNode(Point& point); - -void RemoveNode(Node* node); - -void CreateAdvancingFront(std::vector<Node*> nodes); - -/// Try to map a node to all sides of this triangle that don't have a neighbor -void MapTriangleToNodes(Triangle& t); - -void AddToMap(Triangle* triangle); - -Point* GetPoint(const int& index); - -Point* GetPoints(); - -void RemoveFromMap(Triangle* triangle); - -void AddHole(std::vector<Point*> polyline); - -void AddPoint(Point* point); - -AdvancingFront* front(); - -void MeshClean(Triangle& triangle); - -std::vector<Triangle*> GetTriangles(); -std::list<Triangle*> GetMap(); - -std::vector<Edge*> edge_list; - -struct Basin { - Node* left_node; - Node* bottom_node; - Node* right_node; - double width; - bool left_highest; - - Basin() : left_node(NULL), bottom_node(NULL), right_node(NULL), width(0.0), left_highest(false) - { - } - - void Clear() - { - left_node = NULL; - bottom_node = NULL; - right_node = NULL; - width = 0.0; - left_highest = false; - } -}; - -struct EdgeEvent { - Edge* constrained_edge; - bool right; - - EdgeEvent() : constrained_edge(NULL), right(false) - { - } -}; - -Basin basin; -EdgeEvent edge_event; - -private: - -friend class Sweep; - -std::vector<Triangle*> triangles_; -std::list<Triangle*> map_; -std::vector<Point*> points_; - -// Advancing front -AdvancingFront* front_; -// head point used with advancing front -Point* head_; -// tail point used with advancing front -Point* tail_; - -Node *af_head_, *af_middle_, *af_tail_; - -void InitTriangulation(); -void InitEdges(std::vector<Point*> polyline); - -}; - -inline AdvancingFront* SweepContext::front() -{ - return front_; -} - -inline int SweepContext::point_count() -{ - return int(points_.size()); -} - -inline void SweepContext::set_head(Point* p1) -{ - head_ = p1; -} - -inline Point* SweepContext::head() -{ - return head_; -} - -inline void SweepContext::set_tail(Point* p1) -{ - tail_ = p1; -} - -inline Point* SweepContext::tail() -{ - return tail_; -} - -} - -#endif |