summaryrefslogtreecommitdiff
path: root/tests/auto/qgeotiledmapscene/tst_qgeotiledmapscene.cpp
blob: 6b3dc1f64093f29e77fecc69d7e2f387d4cf9d01 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the test suite of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:GPL-EXCEPT$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 as published by the Free Software
** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/

//TESTED_COMPONENT=src/location/maps

#include "qgeotilespec_p.h"
#include "qgeotiledmapscene_p.h"
#include "qgeocameratiles_p.h"
#include "qgeocameradata_p.h"
#include "qabstractgeotilecache_p.h"
#include <QtLocation/private/qgeoprojection_p.h>
#include <QtPositioning/private/qwebmercator_p.h>
#include <QtPositioning/private/qdoublevector2d_p.h>

#include <qtest.h>

#include <QList>
#include <QPair>
#include <QDebug>

#include <cmath>

QT_USE_NAMESPACE

class tst_QGeoTiledMapScene : public QObject
{
    Q_OBJECT

    private:
    void row(QString name, double screenX, double screenX2, double screenY, double cameraCenterX, double cameraCenterY,
             double zoom, int tileSize, int screenWidth, int screenHeight, double mercatorX, double mercatorY){

        // expected behaviour of wrapping
        if (mercatorX <= 0.0)
            mercatorX += 1.0;
        else if (mercatorX > 1.0)
            mercatorX -= 1.0;

        QTest::newRow(qPrintable(name))
                << screenX << screenX2 << screenY
                << cameraCenterX << cameraCenterY
                << zoom << tileSize
                << screenWidth << screenHeight
                << mercatorX
                << mercatorY;
    }

    void screenPositions(QString name, double cameraCenterX, double cameraCenterY,  double zoom,
                         int tileSize, int screenWidth, int screenHeight)
    {
        double screenX;
        double screenX2;
        double screenY;
        double mercatorX;
        double mercatorY;

        double halfLength = 1 / (std::pow(2.0, zoom) * 2);
        double scaleX = screenWidth / tileSize;
        double scaleY = screenHeight / tileSize;
        double scaledHalfLengthX = halfLength * scaleX;
        double scaledHalfLengthY = halfLength * scaleY;

        bool matchingMapEnds = false;
        if (screenWidth == std::pow(2.0, zoom) * tileSize)
            matchingMapEnds = true;

        // bottom left
        screenX = screenX2 = 0.0;
        if (matchingMapEnds)
            screenX2 = qAbs(screenX - 1.0) * screenWidth;
        screenY = 1.0 * screenHeight;
        mercatorX = cameraCenterX - scaledHalfLengthX;
        mercatorY = cameraCenterY + scaledHalfLengthY;
        row (name + QString("_bottomLeftScreen"), screenX, screenX2, screenY, cameraCenterX, cameraCenterY,
                     zoom, tileSize, screenWidth, screenHeight, mercatorX, mercatorY);

        // bottom
        screenX = screenX2 = 0.5 * screenWidth;
        screenY = 1.0 * screenHeight;
        mercatorX = cameraCenterX;
        mercatorY = cameraCenterY + scaledHalfLengthY;
        row (name + QString("_bottomScreen"), screenX, screenX2, screenY, cameraCenterX, cameraCenterY,
                     zoom, tileSize, screenWidth, screenHeight, mercatorX, mercatorY);

        // bottom right
        screenX = screenX2 = 1.0 * screenWidth;
        if (matchingMapEnds)
            screenX2 = qAbs(screenX - 1.0) * screenWidth;
        screenY = 1.0 * screenHeight;
        mercatorX = cameraCenterX + scaledHalfLengthX;
        mercatorY = cameraCenterY + scaledHalfLengthY;
        row (name + QString("_bottomRightScreen"), screenX, screenX2, screenY, cameraCenterX, cameraCenterY,
                     zoom, tileSize, screenWidth, screenHeight, mercatorX, mercatorY);

        // left
        screenX = screenX2 = 0.0 * screenWidth;
        if (matchingMapEnds)
            screenX2 = qAbs(screenX - 1.0) * screenWidth;
        screenY = 0.5 * screenHeight;
        mercatorX = cameraCenterX - scaledHalfLengthX;
        mercatorY = cameraCenterY;
        row (name + QString("_leftScreen"), screenX, screenX2, screenY, cameraCenterX, cameraCenterY,
                     zoom, tileSize, screenWidth, screenHeight, mercatorX, mercatorY);

        // center
        screenX = screenX2 = 0.5 * screenWidth;
        screenY = 0.5 * screenHeight;
        mercatorX = cameraCenterX;
        mercatorY = cameraCenterY;
        row (name + QString("_centerScreen"), screenX, screenX2, screenY, cameraCenterX, cameraCenterY,
                     zoom, tileSize, screenWidth, screenHeight, mercatorX, mercatorY);

        // right
        screenX = screenX2 = 1.0 * screenWidth;
        if (matchingMapEnds)
            screenX2 = qAbs(screenX - 1.0) * screenWidth;
        screenY = 0.5 * screenHeight;
        mercatorX = cameraCenterX + scaledHalfLengthX;
        mercatorY = cameraCenterY;
        row (name + QString("_rightScreen"), screenX, screenX2, screenY, cameraCenterX, cameraCenterY,
                     zoom, tileSize, screenWidth, screenHeight, mercatorX, mercatorY);

        // top left
        screenX = screenX2 = 0.0;
        if (matchingMapEnds)
            screenX2 = qAbs(screenX - 1.0) * screenWidth;
        screenY = 0.0;
        mercatorX = cameraCenterX - scaledHalfLengthX;
        mercatorY = cameraCenterY - scaledHalfLengthY;
        row (name + QString("_topLeftScreen"), screenX, screenX2, screenY, cameraCenterX, cameraCenterY,
                     zoom, tileSize, screenWidth, screenHeight, mercatorX, mercatorY);

        // top
        screenX = screenX2 = 0.5 * screenWidth;
        screenY = 0.0;
        mercatorX = cameraCenterX;
        mercatorY = cameraCenterY - scaledHalfLengthY;
        row (name + QString("_topScreen"), screenX, screenX2, screenY, cameraCenterX, cameraCenterY,
                     zoom, tileSize, screenWidth, screenHeight, mercatorX, mercatorY);

        // top right
        screenX = screenX2 = 1.0 * screenWidth;
        if (matchingMapEnds)
            screenX2 = qAbs(screenX - 1.0) * screenWidth;
        screenY = 0.0;
        mercatorX = cameraCenterX + scaledHalfLengthX;
        mercatorY = cameraCenterY - scaledHalfLengthY;
        row (name + QString("_topRightScreen"), screenX, screenX2, screenY, cameraCenterX, cameraCenterY,
                     zoom, tileSize, screenWidth, screenHeight, mercatorX, mercatorY);

    }

    void screenCameraPositions(QString name, double zoom, int tileSize,
                               int screenWidth, int screenHeight)
    {
        double cameraCenterX;
        double cameraCenterY;

        // bottom left
        cameraCenterX = 0;
        cameraCenterY = 1.0;
        screenPositions(name + QString("_bottomLeftCamera"), cameraCenterX, cameraCenterY,
                        zoom, tileSize, screenWidth, screenHeight);

        // bottom
        cameraCenterX = 0.5;
        cameraCenterY = 1.0;
        screenPositions(name + QString("_bottomCamera"), cameraCenterX, cameraCenterY,
                        zoom, tileSize, screenWidth, screenHeight);
        // bottom right
        cameraCenterX = 1.0;
        cameraCenterY = 1.0;
        screenPositions(name + QString("_bottomRightCamera"), cameraCenterX, cameraCenterY,
                        zoom, tileSize, screenWidth, screenHeight);
        // left
        cameraCenterX = 0.0;
        cameraCenterY = 0.5;
        screenPositions(name + QString("_leftCamera"), cameraCenterX, cameraCenterY,
                        zoom, tileSize, screenWidth, screenHeight);
        // middle
        cameraCenterX = 0.5;
        cameraCenterY = 0.5;
        screenPositions(name + QString("_middleCamera"), cameraCenterX, cameraCenterY,
                        zoom, tileSize, screenWidth, screenHeight);
        // right
        cameraCenterX = 1.0;
        cameraCenterY = 0.5;
        screenPositions(name + QString("_rightCamera"), cameraCenterX, cameraCenterY,
                        zoom, tileSize, screenWidth, screenHeight);
        // top left
        cameraCenterX = 0.0;
        cameraCenterY = 0.0;
        screenPositions(name + QString("_topLeftCamera"), cameraCenterX, cameraCenterY,
                        zoom, tileSize, screenWidth, screenHeight);
        // top
        cameraCenterX = 0.5;
        cameraCenterY = 0.0;
        screenPositions(name + QString("_topCamera"), cameraCenterX, cameraCenterY,
                        zoom, tileSize, screenWidth, screenHeight);
        // top right
        cameraCenterX = 1.0;
        cameraCenterY = 0.0;
        screenPositions(name + QString("_topRightCamera"), cameraCenterX, cameraCenterY,
                        zoom, tileSize, screenWidth, screenHeight);
    }

    void populateScreenMercatorData(){
        QTest::addColumn<double>("screenX");
        QTest::addColumn<double>("screenX2");
        QTest::addColumn<double>("screenY");
        QTest::addColumn<double>("cameraCenterX");
        QTest::addColumn<double>("cameraCenterY");
        QTest::addColumn<double>("zoom");
        QTest::addColumn<int>("tileSize");
        QTest::addColumn<int>("screenWidth");
        QTest::addColumn<int>("screenHeight");
        QTest::addColumn<double>("mercatorX");
        QTest::addColumn<double>("mercatorY");

        int tileSize;
        double zoom;
        int screenWidth;
        int screenHeight;
        QString name;
        tileSize = 256;
        zoom = 1.0; // 4 tiles in the map. map size =  2*tileSize x 2*tileSize

        /*
            ScreenWidth = t
            ScreenHeight = t
        */
        screenWidth = tileSize;
        screenHeight = tileSize;
        name = QString("_(t x t)");
        screenCameraPositions(name, zoom, tileSize, screenWidth, screenHeight);

        /*
            ScreenWidth = t * 2
            ScreenHeight = t
        */
        screenWidth = tileSize * 2;
        screenHeight = tileSize;
        name = QString("_(2t x t)");
        screenCameraPositions(name, zoom, tileSize, screenWidth, screenHeight);

        /*
            ScreenWidth = t
            ScreenHeight = t * 2
        */
        screenWidth = tileSize;
        screenHeight = tileSize * 2;
        name = QString("_(2t x t)");
        screenCameraPositions(name, zoom, tileSize, screenWidth, screenHeight);


        /*
            Screen Width = t * 2
            Screen Height = t * 2
        */
        screenWidth = tileSize * 2;
        screenHeight = tileSize * 2;
        name = QString("_(2t x 2t)");
        screenCameraPositions(name, zoom, tileSize, screenWidth, screenHeight);
    }

    // Calculates the distance in mercator space of 2 x coordinates, assuming that 1 == 0
    double wrappedMercatorDistance(double x1, double x2)
    {
        return qMin(qMin(qAbs(x1 - 1.0 - x2), qAbs(x1 - x2)), qAbs(x1 + 1.0 - x2));
    }

    private slots:
        void screenToMercatorPositions(){
            QFETCH(double, screenX);
            QFETCH(double, screenY);
            QFETCH(double, cameraCenterX);
            QFETCH(double, cameraCenterY);
            QFETCH(double, zoom);
            QFETCH(int, tileSize);
            QFETCH(int, screenWidth);
            QFETCH(int, screenHeight);
            QFETCH(double, mercatorX);
            QFETCH(double, mercatorY);

            QGeoCameraData camera;
            camera.setZoomLevel(zoom);
            QGeoCoordinate centerCoordinate = QWebMercator::mercatorToCoord(QDoubleVector2D(cameraCenterX, cameraCenterY));
            camera.setCenter(centerCoordinate);

            QGeoCameraTiles ct;
            ct.setTileSize(tileSize);
            ct.setCameraData(camera);
            ct.setScreenSize(QSize(screenWidth,screenHeight));

            QGeoTiledMapScene mapGeometry;
            mapGeometry.setTileSize(tileSize);
            mapGeometry.setScreenSize(QSize(screenWidth,screenHeight));
            mapGeometry.setCameraData(camera);
            mapGeometry.setVisibleTiles(ct.createTiles());

            QGeoProjectionWebMercator projection;
            projection.setViewportSize(QSize(screenWidth,screenHeight));
            projection.setCameraData(camera);

            QDoubleVector2D point(screenX,screenY);
            QDoubleVector2D mercartorPos = projection.unwrapMapProjection(projection.itemPositionToWrappedMapProjection(point));

            const double tolerance = 0.00000000001; // FuzzyCompare is too strict here
            QVERIFY2(wrappedMercatorDistance(mercartorPos.x(),  mercatorX) < tolerance,
                                 qPrintable(QString("Accepted: %1 ,  Actual: %2")
                                            .arg(QString::number(mercatorX))
                                            .arg(QString::number(mercartorPos.x()))));
            QVERIFY2(qAbs(mercartorPos.y() - mercatorY) < tolerance,
                                 qPrintable(QString("Accepted: %1 ,  Actual: %2")
                                            .arg(QString::number(mercatorY))
                                            .arg(QString::number(mercartorPos.y()))));
        }

        void screenToMercatorPositions_data()
        {
            populateScreenMercatorData();
        }

        void mercatorToScreenPositions(){
            QFETCH(double, screenX);
            QFETCH(double, screenX2);
            QFETCH(double, screenY);
            QFETCH(double, cameraCenterX);
            QFETCH(double, cameraCenterY);
            QFETCH(double, zoom);
            QFETCH(int, tileSize);
            QFETCH(int, screenWidth);
            QFETCH(int, screenHeight);
            QFETCH(double, mercatorX);
            QFETCH(double, mercatorY);

            QGeoCameraData camera;
            camera.setZoomLevel(zoom);
            QGeoCoordinate coord = QWebMercator::mercatorToCoord(QDoubleVector2D(cameraCenterX, cameraCenterY));
            camera.setCenter(coord);

            QGeoCameraTiles ct;
            ct.setTileSize(tileSize);
            ct.setCameraData(camera);
            ct.setScreenSize(QSize(screenWidth,screenHeight));

            QGeoTiledMapScene mapGeometry;
            mapGeometry.setTileSize(tileSize);
            mapGeometry.setScreenSize(QSize(screenWidth,screenHeight));
            mapGeometry.setCameraData(camera);
            mapGeometry.setVisibleTiles(ct.createTiles());

            QGeoProjectionWebMercator projection;
            projection.setViewportSize(QSize(screenWidth,screenHeight));
            projection.setCameraData(camera);

            QDoubleVector2D mercatorPos(mercatorX, mercatorY);
            QPointF point = projection.wrappedMapProjectionToItemPosition(projection.wrapMapProjection(mercatorPos)).toPointF();

            QVERIFY2((point.x() == screenX) || (point.x() == screenX2),
                                 qPrintable(QString("Accepted: { %1 , %2 } Actual: %3")
                                            .arg(QString::number(screenX))
                                            .arg(QString::number(screenX2))
                                            .arg(QString::number(point.x()))));
            QCOMPARE(point.y(), screenY);
        }

        void mercatorToScreenPositions_data(){
            populateScreenMercatorData();
        }

};

QTEST_GUILESS_MAIN(tst_QGeoTiledMapScene)
#include "tst_qgeotiledmapscene.moc"