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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
//TESTED_COMPONENT=src/location/maps
#include <QtLocation/private/qgeotilespec_p.h>
#include <QtLocation/private/qgeotiledmapscene_p.h>
#include <QtLocation/private/qgeocameratiles_p.h>
#include <QtLocation/private/qgeocameradata_p.h>
#include <QtLocation/private/qabstractgeotilecache_p.h>
#include <QtLocation/private/qgeoprojection_p.h>
#include <QtPositioning/QGeoCoordinate>
#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"
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