1 files changed, 61 insertions, 0 deletions
diff --git a/libs/geometry/test/strategies/side_of_intersection.cpp b/libs/geometry/test/strategies/side_of_intersection.cpp
new file mode 100644
index 000000000..c5de7e0ea
--- /dev/null
+++ b/libs/geometry/test/strategies/side_of_intersection.cpp
@@ -0,0 +1,61 @@
+// Boost.Geometry (aka GGL, Generic Geometry Library)
+// Unit Test
+
+// Copyright (c) 2011-2015 Barend Gehrels, Amsterdam, the Netherlands.
+
+// Use, modification and distribution is subject to the Boost Software License,
+// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+
+
+#include <geometry_test_common.hpp>
+
+#include <boost/geometry/strategies/cartesian/side_of_intersection.hpp>
+#include <boost/geometry/geometries/point_xy.hpp>
+#include <boost/geometry/geometries/segment.hpp>
+
+
+namespace bg = boost::geometry;
+
+int test_main(int, char* [])
+{
+    typedef bg::model::d2::point_xy<int> point;
+    typedef bg::model::segment<point> segment;
+
+    segment a(point(20, 10), point(10, 20));
+
+    segment b1(point(11, 16), point(20, 14));  // IP with a: (14.857, 15.143)
+    segment b2(point(10, 16), point(20, 14));  // IP with a: (15, 15)
+
+    segment c1(point(15, 16), point(13, 8));
+    segment c2(point(15, 16), point(14, 8));
+    segment c3(point(15, 16), point(15, 8));
+
+    typedef bg::strategy::side::side_of_intersection side;
+
+    BOOST_CHECK_EQUAL( 1, side::apply(a, b1, c1));
+    BOOST_CHECK_EQUAL(-1, side::apply(a, b1, c2));
+    BOOST_CHECK_EQUAL(-1, side::apply(a, b1, c3));
+
+    BOOST_CHECK_EQUAL( 1, side::apply(a, b2, c1));
+    BOOST_CHECK_EQUAL( 1, side::apply(a, b2, c2));
+    BOOST_CHECK_EQUAL( 0, side::apply(a, b2, c3));
+
+    // Check internal calculation-method:
+    BOOST_CHECK_EQUAL(-1400, side::side_value<int>(a, b1, c2));
+    BOOST_CHECK_EQUAL( 2800, side::side_value<int>(a, b1, c1));
+
+    BOOST_CHECK_EQUAL (2800, side::side_value<int>(a, b1, c1));
+    BOOST_CHECK_EQUAL(-1400, side::side_value<int>(a, b1, c2));
+    BOOST_CHECK_EQUAL(-5600, side::side_value<int>(a, b1, c3));
+
+    BOOST_CHECK_EQUAL(12800, side::side_value<int>(a, b2, c1));
+    BOOST_CHECK_EQUAL( 6400, side::side_value<int>(a, b2, c2));
+    BOOST_CHECK_EQUAL(    0, side::side_value<int>(a, b2, c3));
+
+    // TODO: we might add a check calculating the IP, determining the side
+    // with the normal side strategy, and verify the results are equal
+
+    return 0;
+}
+