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testqgscoordinatetransform.cpp
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testqgscoordinatetransform.cpp
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/***************************************************************************
testqgscoordinatetransform.cpp
-----------------------
begin : October 2014
copyright : (C) 2014 by Nyall Dawson
email : nyall dot dawson at gmail dot com
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#include "qgscoordinatetransform.h"
#include "qgsapplication.h"
#include "qgsrectangle.h"
#include "qgscoordinatetransformcontext.h"
#include "qgsproject.h"
#include <QObject>
#include "qgstest.h"
#include "qgsexception.h"
#include "qgslogger.h"
class TestQgsCoordinateTransform: public QObject
{
Q_OBJECT
private slots:
void initTestCase();
void cleanupTestCase();
void transformBoundingBox();
void copy();
void assignment();
void isValid();
void isShortCircuited();
void contextShared();
void scaleFactor();
void scaleFactor_data();
void transform_data();
void transform();
void transformLKS();
void transformContextNormalize();
void transform2DPoint();
void transformErrorMultiplePoints();
void transformErrorOnePoint();
void testDeprecated4240to4326();
void testCustomProjTransform();
};
void TestQgsCoordinateTransform::initTestCase()
{
QgsApplication::init();
QgsApplication::initQgis();
}
void TestQgsCoordinateTransform::cleanupTestCase()
{
QgsApplication::exitQgis();
}
void TestQgsCoordinateTransform::copy()
{
QgsCoordinateTransform uninitialized;
QgsCoordinateTransform uninitializedCopy( uninitialized );
QVERIFY( !uninitializedCopy.isValid() );
QgsCoordinateReferenceSystem source( QStringLiteral( "EPSG:3111" ) );
QgsCoordinateReferenceSystem destination( QStringLiteral( "EPSG:4326" ) );
QgsCoordinateTransform original( source, destination, QgsProject::instance() );
QVERIFY( original.isValid() );
QgsCoordinateTransform copy( original );
QVERIFY( copy.isValid() );
QCOMPARE( copy.sourceCrs().authid(), original.sourceCrs().authid() );
QCOMPARE( copy.destinationCrs().authid(), original.destinationCrs().authid() );
// force detachement of copy
QgsCoordinateReferenceSystem newDest( QStringLiteral( "EPSG:3857" ) );
copy.setDestinationCrs( newDest );
QVERIFY( copy.isValid() );
QCOMPARE( copy.destinationCrs().authid(), QString( "EPSG:3857" ) );
QCOMPARE( original.destinationCrs().authid(), QString( "EPSG:4326" ) );
}
void TestQgsCoordinateTransform::assignment()
{
QgsCoordinateTransform uninitialized;
QgsCoordinateTransform uninitializedCopy;
uninitializedCopy = uninitialized;
QVERIFY( !uninitializedCopy.isValid() );
QgsCoordinateReferenceSystem source( QStringLiteral( "EPSG:3111" ) );
QgsCoordinateReferenceSystem destination( QStringLiteral( "EPSG:4326" ) );
QgsCoordinateTransform original( source, destination, QgsProject::instance() );
QVERIFY( original.isValid() );
QgsCoordinateTransform copy;
copy = original;
QVERIFY( copy.isValid() );
QCOMPARE( copy.sourceCrs().authid(), original.sourceCrs().authid() );
QCOMPARE( copy.destinationCrs().authid(), original.destinationCrs().authid() );
// force detachement of copy
QgsCoordinateReferenceSystem newDest( QStringLiteral( "EPSG:3857" ) );
copy.setDestinationCrs( newDest );
QVERIFY( copy.isValid() );
QCOMPARE( copy.destinationCrs().authid(), QStringLiteral( "EPSG:3857" ) );
QCOMPARE( original.destinationCrs().authid(), QStringLiteral( "EPSG:4326" ) );
// test assigning back to invalid
copy = uninitialized;
QVERIFY( !copy.isValid() );
QVERIFY( original.isValid() );
}
void TestQgsCoordinateTransform::isValid()
{
QgsCoordinateTransform tr;
QVERIFY( !tr.isValid() );
QgsCoordinateReferenceSystem srs1( QStringLiteral( "EPSG:3994" ) );
QgsCoordinateReferenceSystem srs2( QStringLiteral( "EPSG:4326" ) );
// valid source, invalid destination
QgsCoordinateTransform tr2( srs1, QgsCoordinateReferenceSystem(), QgsProject::instance() );
QVERIFY( !tr2.isValid() );
// invalid source, valid destination
QgsCoordinateTransform tr3( QgsCoordinateReferenceSystem(), srs2, QgsProject::instance() );
QVERIFY( !tr3.isValid() );
// valid source, valid destination
QgsCoordinateTransform tr4( srs1, srs2, QgsProject::instance() );
QVERIFY( tr4.isValid() );
// try to invalidate by setting source as invalid
tr4.setSourceCrs( QgsCoordinateReferenceSystem() );
QVERIFY( !tr4.isValid() );
QgsCoordinateTransform tr5( srs1, srs2, QgsProject::instance() );
// try to invalidate by setting destination as invalid
tr5.setDestinationCrs( QgsCoordinateReferenceSystem() );
QVERIFY( !tr5.isValid() );
}
void TestQgsCoordinateTransform::isShortCircuited()
{
QgsCoordinateTransform tr;
//invalid transform shortcircuits
QVERIFY( tr.isShortCircuited() );
QgsCoordinateReferenceSystem srs1( QStringLiteral( "EPSG:3994" ) );
QgsCoordinateReferenceSystem srs2( QStringLiteral( "EPSG:4326" ) );
// valid source, invalid destination
QgsCoordinateTransform tr2( srs1, QgsCoordinateReferenceSystem(), QgsProject::instance() );
QVERIFY( tr2.isShortCircuited() );
// invalid source, valid destination
QgsCoordinateTransform tr3( QgsCoordinateReferenceSystem(), srs2, QgsProject::instance() );
QVERIFY( tr3.isShortCircuited() );
// equal, valid source and destination
QgsCoordinateTransform tr4( srs1, srs1, QgsProject::instance() );
QVERIFY( tr4.isShortCircuited() );
// valid but different source and destination
QgsCoordinateTransform tr5( srs1, srs2, QgsProject::instance() );
QVERIFY( !tr5.isShortCircuited() );
// try to short circuit by changing dest
tr5.setDestinationCrs( srs1 );
QVERIFY( tr5.isShortCircuited() );
}
void TestQgsCoordinateTransform::contextShared()
{
//test implicit sharing of QgsCoordinateTransformContext
QgsCoordinateTransformContext original;
original.addCoordinateOperation( QgsCoordinateReferenceSystem( QStringLiteral( "EPSG:3111" ) ), QgsCoordinateReferenceSystem( QStringLiteral( "EPSG:3113" ) ), QStringLiteral( "proj" ) );
QgsCoordinateTransformContext copy( original );
QMap< QPair< QString, QString >, QString > expected;
expected.insert( qMakePair( QStringLiteral( "EPSG:3111" ), QStringLiteral( "EPSG:3113" ) ), QStringLiteral( "proj" ) );
QCOMPARE( original.coordinateOperations(), expected );
QCOMPARE( copy.coordinateOperations(), expected );
// trigger detach
copy.addCoordinateOperation( QgsCoordinateReferenceSystem( QStringLiteral( "EPSG:3111" ) ), QgsCoordinateReferenceSystem( QStringLiteral( "EPSG:3113" ) ), QStringLiteral( "proj2" ) );
QCOMPARE( original.coordinateOperations(), expected );
expected.insert( qMakePair( QStringLiteral( "EPSG:3111" ), QStringLiteral( "EPSG:3113" ) ), QStringLiteral( "proj2" ) );
QCOMPARE( copy.coordinateOperations(), expected );
// copy via assignment
QgsCoordinateTransformContext copy2;
copy2 = original;
expected.insert( qMakePair( QStringLiteral( "EPSG:3111" ), QStringLiteral( "EPSG:3113" ) ), QStringLiteral( "proj" ) );
QCOMPARE( original.coordinateOperations(), expected );
QCOMPARE( copy2.coordinateOperations(), expected );
copy2.addCoordinateOperation( QgsCoordinateReferenceSystem( QStringLiteral( "EPSG:3111" ) ), QgsCoordinateReferenceSystem( QStringLiteral( "EPSG:3113" ) ), QStringLiteral( "proj2" ) );
QCOMPARE( original.coordinateOperations(), expected );
expected.insert( qMakePair( QStringLiteral( "EPSG:3111" ), QStringLiteral( "EPSG:3113" ) ), QStringLiteral( "proj2" ) );
QCOMPARE( copy2.coordinateOperations(), expected );
}
void TestQgsCoordinateTransform::scaleFactor()
{
QFETCH( QgsCoordinateReferenceSystem, sourceCrs );
QFETCH( QgsCoordinateReferenceSystem, destCrs );
QFETCH( QgsRectangle, rect );
QFETCH( double, factor );
QgsCoordinateTransform ct( sourceCrs, destCrs, QgsProject::instance() );
try
{
QGSCOMPARENEAR( ct.scaleFactor( rect ), factor, 0.000001 );
}
catch ( QgsCsException & )
{
QVERIFY( false );
}
}
void TestQgsCoordinateTransform::scaleFactor_data()
{
QTest::addColumn<QgsCoordinateReferenceSystem>( "sourceCrs" );
QTest::addColumn<QgsCoordinateReferenceSystem>( "destCrs" );
QTest::addColumn<QgsRectangle>( "rect" );
QTest::addColumn<double>( "factor" );
QTest::newRow( "Different map units" )
<< QgsCoordinateReferenceSystem::fromEpsgId( 2056 )
<< QgsCoordinateReferenceSystem::fromEpsgId( 4326 )
<< QgsRectangle( 2550000, 1200000, 2550100, 1200100 )
<< 1.1223316038381985e-5;
QTest::newRow( "Same map units" )
<< QgsCoordinateReferenceSystem::fromEpsgId( 3111 )
<< QgsCoordinateReferenceSystem::fromEpsgId( 28355 )
<< QgsRectangle( 2560536.7, 2331787.5, 2653161.1, 2427370.4 )
<< 0.999632;
QTest::newRow( "Same CRS" )
<< QgsCoordinateReferenceSystem::fromEpsgId( 2056 )
<< QgsCoordinateReferenceSystem::fromEpsgId( 2056 )
<< QgsRectangle( 2550000, 1200000, 2550100, 1200100 )
<< 1.0;
}
void TestQgsCoordinateTransform::transform_data()
{
QTest::addColumn<QgsCoordinateReferenceSystem>( "sourceCrs" );
QTest::addColumn<QgsCoordinateReferenceSystem>( "destCrs" );
QTest::addColumn<double>( "x" );
QTest::addColumn<double>( "y" );
QTest::addColumn<int>( "direction" );
QTest::addColumn<double>( "outX" );
QTest::addColumn<double>( "outY" );
QTest::addColumn<double>( "precision" );
QTest::newRow( "To geographic" )
<< QgsCoordinateReferenceSystem::fromEpsgId( 3111 )
<< QgsCoordinateReferenceSystem::fromEpsgId( 4326 )
<< 2545059.0 << 2393190.0 << static_cast< int >( QgsCoordinateTransform::ForwardTransform ) << 145.512750 << -37.961375 << 0.000015;
QTest::newRow( "From geographic" )
<< QgsCoordinateReferenceSystem::fromEpsgId( 4326 )
<< QgsCoordinateReferenceSystem::fromEpsgId( 3111 )
<< 145.512750 << -37.961375 << static_cast< int >( QgsCoordinateTransform::ForwardTransform ) << 2545059.0 << 2393190.0 << 1.5;
QTest::newRow( "From geographic to geographic" )
<< QgsCoordinateReferenceSystem::fromEpsgId( 4326 )
<< QgsCoordinateReferenceSystem::fromEpsgId( 4164 )
<< 145.512750 << -37.961375 << static_cast< int >( QgsCoordinateTransform::ForwardTransform ) << 145.510966 << -37.961741 << 0.0001;
QTest::newRow( "To geographic (reverse)" )
<< QgsCoordinateReferenceSystem::fromEpsgId( 3111 )
<< QgsCoordinateReferenceSystem::fromEpsgId( 4326 )
<< 145.512750 << -37.961375 << static_cast< int >( QgsCoordinateTransform::ReverseTransform ) << 2545059.0 << 2393190.0 << 1.5;
QTest::newRow( "From geographic (reverse)" )
<< QgsCoordinateReferenceSystem::fromEpsgId( 4326 )
<< QgsCoordinateReferenceSystem::fromEpsgId( 3111 )
<< 2545058.9675128171 << 2393190.0509782173 << static_cast< int >( QgsCoordinateTransform::ReverseTransform ) << 145.512750 << -37.961375 << 0.000015;
QTest::newRow( "From geographic to geographic reverse" )
<< QgsCoordinateReferenceSystem::fromEpsgId( 4326 )
<< QgsCoordinateReferenceSystem::fromEpsgId( 4164 )
<< 145.510966 << -37.961741 << static_cast< int >( QgsCoordinateTransform::ReverseTransform ) << 145.512750 << -37.961375 << 0.0001;
QTest::newRow( "From LKS92/TM to Baltic93/TM" )
<< QgsCoordinateReferenceSystem::fromEpsgId( 3059 )
<< QgsCoordinateReferenceSystem::fromEpsgId( 25884 )
<< 725865.850 << 198519.947 << static_cast< int >( QgsCoordinateTransform::ForwardTransform ) << 725865.850 << 6198519.947 << 0.001;
QTest::newRow( "From LKS92/TM to Baltic93/TM (reverse)" )
<< QgsCoordinateReferenceSystem::fromEpsgId( 3059 )
<< QgsCoordinateReferenceSystem::fromEpsgId( 25884 )
<< 725865.850 << 6198519.947 << static_cast< int >( QgsCoordinateTransform::ReverseTransform ) << 725865.850 << 198519.947 << 0.001;
QTest::newRow( "From LKS92/TM to WGS84" )
<< QgsCoordinateReferenceSystem::fromEpsgId( 3059 )
<< QgsCoordinateReferenceSystem::fromEpsgId( 4326 )
<< 725865.850 << 198519.947 << static_cast< int >( QgsCoordinateTransform::ForwardTransform ) << 27.61113711 << 55.87910378 << 0.00000001;
QTest::newRow( "From LKS92/TM to WGS84 (reverse)" )
<< QgsCoordinateReferenceSystem::fromEpsgId( 3059 )
<< QgsCoordinateReferenceSystem::fromEpsgId( 4326 )
<< 27.61113711 << 55.87910378 << static_cast< int >( QgsCoordinateTransform::ReverseTransform ) << 725865.850 << 198519.947 << 0.001;
QTest::newRow( "From BNG to WGS84" )
<< QgsCoordinateReferenceSystem::fromEpsgId( 27700 )
<< QgsCoordinateReferenceSystem::fromEpsgId( 4326 )
<< 7467023.96 << -5527971.74 << static_cast< int >( QgsCoordinateTransform::ForwardTransform ) << 51.400222 << 0.000025 << 0.4;
QTest::newRow( "From BNG to WGS84 2" )
<< QgsCoordinateReferenceSystem::fromEpsgId( 27700 )
<< QgsCoordinateReferenceSystem::fromEpsgId( 4326 )
<< 246909.0 << 54108.0 << static_cast< int >( QgsCoordinateTransform::ForwardTransform ) << -4.153951 << 50.366908 << 0.4;
QTest::newRow( "From BNG to WGS84 (reverse)" )
<< QgsCoordinateReferenceSystem::fromEpsgId( 27700 )
<< QgsCoordinateReferenceSystem::fromEpsgId( 4326 )
<< 51.400222 << 0.000025 << static_cast< int >( QgsCoordinateTransform::ReverseTransform ) << 7467023.96 << -5527971.74 << 22000.0;
QTest::newRow( "From WGS84 to BNG (reverse)" )
<< QgsCoordinateReferenceSystem::fromEpsgId( 4326 )
<< QgsCoordinateReferenceSystem::fromEpsgId( 27700 )
<< 7467023.96 << -5527971.74 << static_cast< int >( QgsCoordinateTransform::ReverseTransform ) << 51.400222 << 0.000025 << 0.4;
QTest::newRow( "From WGS84 to BNG" )
<< QgsCoordinateReferenceSystem::fromEpsgId( 4326 )
<< QgsCoordinateReferenceSystem::fromEpsgId( 27700 )
<< 51.400222 << 0.000025 << static_cast< int >( QgsCoordinateTransform::ForwardTransform ) << 7467023.96 << -5527971.74 << 22000.0;
QTest::newRow( "From BNG to 3857" )
<< QgsCoordinateReferenceSystem::fromEpsgId( 27700 )
<< QgsCoordinateReferenceSystem::fromEpsgId( 3857 )
<< 7467023.96 << -5527971.74 << static_cast< int >( QgsCoordinateTransform::ForwardTransform ) << 5721846.47 << 2.78 << 43000.0;
QTest::newRow( "From BNG to 3857 (reverse)" )
<< QgsCoordinateReferenceSystem::fromEpsgId( 27700 )
<< QgsCoordinateReferenceSystem::fromEpsgId( 3857 )
<< 5721846.47 << 2.78 << static_cast< int >( QgsCoordinateTransform::ReverseTransform ) << 7467023.96 << -5527971.74 << 22000.0;
}
void TestQgsCoordinateTransform::transform()
{
QFETCH( QgsCoordinateReferenceSystem, sourceCrs );
QFETCH( QgsCoordinateReferenceSystem, destCrs );
QFETCH( double, x );
QFETCH( double, y );
QFETCH( int, direction );
QFETCH( double, outX );
QFETCH( double, outY );
QFETCH( double, precision );
double z = 0;
QgsCoordinateTransform ct( sourceCrs, destCrs, QgsProject::instance() );
ct.transformInPlace( x, y, z, static_cast< QgsCoordinateTransform::TransformDirection >( direction ) );
QGSCOMPARENEAR( x, outX, precision );
QGSCOMPARENEAR( y, outY, precision );
}
void TestQgsCoordinateTransform::transformBoundingBox()
{
//test transforming a bounding box which crosses the 180 degree longitude line
QgsCoordinateReferenceSystem sourceSrs( QStringLiteral( "EPSG:3994" ) );
QgsCoordinateReferenceSystem destSrs( QStringLiteral( "EPSG:4326" ) );
QgsCoordinateTransform tr( sourceSrs, destSrs, QgsProject::instance() );
QgsRectangle crossingRect( 6374985, -3626584, 7021195, -3272435 );
QgsRectangle resultRect = tr.transformBoundingBox( crossingRect, QgsCoordinateTransform::ForwardTransform, true );
QgsRectangle expectedRect;
expectedRect.setXMinimum( 175.771 );
expectedRect.setYMinimum( -39.7222 );
expectedRect.setXMaximum( -176.549 );
expectedRect.setYMaximum( -36.3951 );
qDebug( "BBox transform x min: %.17f", resultRect.xMinimum() );
qDebug( "BBox transform x max: %.17f", resultRect.xMaximum() );
qDebug( "BBox transform y min: %.17f", resultRect.yMinimum() );
qDebug( "BBox transform y max: %.17f", resultRect.yMaximum() );
QGSCOMPARENEAR( resultRect.xMinimum(), expectedRect.xMinimum(), 0.001 );
QGSCOMPARENEAR( resultRect.yMinimum(), expectedRect.yMinimum(), 0.001 );
QGSCOMPARENEAR( resultRect.xMaximum(), expectedRect.xMaximum(), 0.001 );
QGSCOMPARENEAR( resultRect.yMaximum(), expectedRect.yMaximum(), 0.001 );
// test transforming a bounding box, resulting in an invalid transform - exception must be thrown
tr = QgsCoordinateTransform( QgsCoordinateReferenceSystem( QStringLiteral( "EPSG:4326" ) ), QgsCoordinateReferenceSystem( QStringLiteral( "EPSG:28356" ) ), QgsProject::instance() );
QgsRectangle rect( -99999999999, 99999999999, -99999999998, 99999999998 );
bool errorObtained = false;
try
{
resultRect = tr.transformBoundingBox( rect );
}
catch ( QgsCsException & )
{
errorObtained = true;
}
QVERIFY( errorObtained );
}
void TestQgsCoordinateTransform::transformLKS()
{
QgsCoordinateReferenceSystem LKS92 = QgsCoordinateReferenceSystem::fromEpsgId( 3059 );
QVERIFY( LKS92.isValid() );
QgsCoordinateReferenceSystem Baltic93 = QgsCoordinateReferenceSystem::fromEpsgId( 25884 );
QVERIFY( Baltic93.isValid() );
QgsCoordinateReferenceSystem WGS84 = QgsCoordinateReferenceSystem::fromEpsgId( 4326 );
QVERIFY( WGS84.isValid() );
QgsCoordinateTransform Lks2Balt( LKS92, Baltic93, QgsProject::instance() );
QVERIFY( Lks2Balt.isValid() );
QgsCoordinateTransform Lks2Wgs( LKS92, WGS84, QgsProject::instance() );
QVERIFY( Lks2Wgs.isValid() );
QPolygonF sPoly = QgsGeometry::fromWkt( QStringLiteral( "Polygon (( 725865.850 198519.947, 363511.181 263208.769, 717694.697 333650.333, 725865.850 198519.947 ))" ) ).asQPolygonF();
Lks2Balt.transformPolygon( sPoly, QgsCoordinateTransform::ForwardTransform );
QGSCOMPARENEAR( sPoly.at( 0 ).x(), 725865.850, 0.001 );
QGSCOMPARENEAR( sPoly.at( 0 ).y(), 6198519.947, 0.001 );
QGSCOMPARENEAR( sPoly.at( 1 ).x(), 363511.181, 0.001 );
QGSCOMPARENEAR( sPoly.at( 1 ).y(), 6263208.769, 0.001 );
QGSCOMPARENEAR( sPoly.at( 2 ).x(), 717694.697, 0.001 );
QGSCOMPARENEAR( sPoly.at( 2 ).y(), 6333650.333, 0.001 );
}
void TestQgsCoordinateTransform::transformContextNormalize()
{
// coordinate operation for WGS84 to 27700
const QString coordOperation = QStringLiteral( "+proj=pipeline +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=push +v_3 +step +proj=cart +ellps=WGS84 +step +inv +proj=helmert +x=446.448 +y=-125.157 +z=542.06 +rx=0.15 +ry=0.247 +rz=0.842 +s=-20.489 +convention=position_vector +step +inv +proj=cart +ellps=airy +step +proj=pop +v_3 +step +proj=tmerc +lat_0=49 +lon_0=-2 +k=0.9996012717 +x_0=400000 +y_0=-100000 +ellps=airy" );
QgsCoordinateTransformContext context;
context.addCoordinateOperation( QgsCoordinateReferenceSystem::fromEpsgId( 4326 ), QgsCoordinateReferenceSystem::fromEpsgId( 27700 ), coordOperation );
QgsCoordinateTransform ct( QgsCoordinateReferenceSystem::fromEpsgId( 4326 ), QgsCoordinateReferenceSystem::fromEpsgId( 27700 ), context );
QVERIFY( ct.isValid() );
QgsPointXY p( -4.17477, 50.3657 );
QgsPointXY p2 = ct.transform( p );
QGSCOMPARENEAR( p2.x(), 245424.604645, 0.01 );
QGSCOMPARENEAR( p2.y(), 54016.813093, 0.01 );
p = ct.transform( p2, QgsCoordinateTransform::ReverseTransform );
QGSCOMPARENEAR( p.x(), -4.17477, 0.01 );
QGSCOMPARENEAR( p.y(), 50.3657, 0.01 );
QgsCoordinateTransform ct2( QgsCoordinateReferenceSystem::fromEpsgId( 27700 ), QgsCoordinateReferenceSystem::fromEpsgId( 4326 ), context );
QVERIFY( ct2.isValid() );
p = QgsPointXY( 245424.604645, 54016.813093 );
p2 = ct2.transform( p );
QGSCOMPARENEAR( p2.x(), -4.17477, 0.01 );
QGSCOMPARENEAR( p2.y(), 50.3657, 0.01 );
p = ct2.transform( p2, QgsCoordinateTransform::ReverseTransform );
QGSCOMPARENEAR( p.x(), 245424.604645, 0.01 );
QGSCOMPARENEAR( p.y(), 54016.813093, 0.01 );
}
void TestQgsCoordinateTransform::transform2DPoint()
{
// Check that we properly handle 2D point transform
QgsCoordinateTransformContext context;
QgsCoordinateTransform ct( QgsCoordinateReferenceSystem::fromEpsgId( 4326 ), QgsCoordinateReferenceSystem::fromEpsgId( 3857 ), context );
QVERIFY( ct.isValid() );
QgsPoint pt( 0.0, 0.0 );
double x = pt.x();
double y = pt.y();
double z = pt.z();
ct.transformInPlace( x, y, z );
QGSCOMPARENEAR( x, 0.0, 0.01 );
QGSCOMPARENEAR( y, 0.0, 0.01 );
QVERIFY( std::isnan( z ) );
}
void TestQgsCoordinateTransform::transformErrorMultiplePoints()
{
// Check that we don't throw an exception when transforming multiple
// points and at least one fails.
QgsCoordinateTransformContext context;
QgsCoordinateTransform ct( QgsCoordinateReferenceSystem::fromEpsgId( 4326 ), QgsCoordinateReferenceSystem::fromEpsgId( 3857 ), context );
QVERIFY( ct.isValid() );
double x[] = { 0, -1000 };
double y[] = { 0, 0 };
double z[] = { 0, 0 };
ct.transformCoords( 2, x, y, z );
QGSCOMPARENEAR( x[0], 0, 0.01 );
QGSCOMPARENEAR( y[0], 0, 0.01 );
QVERIFY( !std::isfinite( x[1] ) );
QVERIFY( !std::isfinite( y[1] ) );
}
void TestQgsCoordinateTransform::transformErrorOnePoint()
{
QgsCoordinateTransformContext context;
QgsCoordinateTransform ct( QgsCoordinateReferenceSystem::fromEpsgId( 4326 ), QgsCoordinateReferenceSystem::fromEpsgId( 3857 ), context );
QVERIFY( ct.isValid() );
double x[] = { -1000 };
double y[] = { 0 };
double z[] = { 0 };
try
{
ct.transformCoords( 1, x, y, z );
QVERIFY( false );
}
catch ( QgsCsException & )
{
}
}
void TestQgsCoordinateTransform::testDeprecated4240to4326()
{
// test creating a coordinate transform between EPSG 4240 and EPSG 4326 using a deprecated coordinate operation
// see https://github.com/qgis/QGIS/issues/33121
QgsCoordinateTransformContext context;
QgsCoordinateReferenceSystem src( QStringLiteral( "EPSG:4240" ) );
QgsCoordinateReferenceSystem dest( QStringLiteral( "EPSG:4326" ) );
// first use default transform
QgsCoordinateTransform defaultTransform( src, dest, context );
QCOMPARE( defaultTransform.coordinateOperation(), QString() );
QCOMPARE( defaultTransform.instantiatedCoordinateOperationDetails().proj, QStringLiteral( "+proj=pipeline +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=push +v_3 +step +proj=cart +ellps=evrst30 +step +proj=helmert +x=293 +y=836 +z=318 +rx=0.5 +ry=1.6 +rz=-2.8 +s=2.1 +convention=position_vector +step +inv +proj=cart +ellps=WGS84 +step +proj=pop +v_3 +step +proj=unitconvert +xy_in=rad +xy_out=deg" ) );
QVERIFY( defaultTransform.isValid() );
const QgsPointXY p( 102.5, 7.5 );
QgsPointXY p2 = defaultTransform.transform( p );
QGSCOMPARENEAR( p2.x(), 102.494938, 0.000001 );
QGSCOMPARENEAR( p2.y(), 7.502624, 0.000001 );
QgsPointXY p3 = defaultTransform.transform( p2, QgsCoordinateTransform::ReverseTransform );
QGSCOMPARENEAR( p3.x(), 102.5, 0.000001 );
QGSCOMPARENEAR( p3.y(), 7.5, 0.000001 );
// and in reverse
QgsCoordinateTransform defaultTransformRev( dest, src, context );
QVERIFY( defaultTransformRev.isValid() );
QCOMPARE( defaultTransformRev.coordinateOperation(), QString() );
QgsDebugMsg( defaultTransformRev.instantiatedCoordinateOperationDetails().proj );
QCOMPARE( defaultTransformRev.instantiatedCoordinateOperationDetails().proj, QStringLiteral( "+proj=pipeline +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=push +v_3 +step +proj=cart +ellps=WGS84 +step +inv +proj=helmert +x=293 +y=836 +z=318 +rx=0.5 +ry=1.6 +rz=-2.8 +s=2.1 +convention=position_vector +step +inv +proj=cart +ellps=evrst30 +step +proj=pop +v_3 +step +proj=unitconvert +xy_in=rad +xy_out=deg" ) );
p2 = defaultTransformRev.transform( QgsPointXY( 102.494938, 7.502624 ) );
QGSCOMPARENEAR( p2.x(), 102.5, 0.000001 );
QGSCOMPARENEAR( p2.y(), 7.5, 0.000001 );
p3 = defaultTransformRev.transform( p2, QgsCoordinateTransform::ReverseTransform );
QGSCOMPARENEAR( p3.x(), 102.494938, 0.000001 );
QGSCOMPARENEAR( p3.y(), 7.502624, 0.000001 );
// now force use of deprecated transform
const QString deprecatedProj = QStringLiteral( "+proj=pipeline +step +proj=unitconvert +xy_in=deg +xy_out=rad +step +proj=push +v_3 +step +proj=cart +ellps=evrst30 +step +proj=helmert +x=209 +y=818 +z=290 +step +inv +proj=cart +ellps=WGS84 +step +proj=pop +v_3 +step +proj=unitconvert +xy_in=rad +xy_out=deg" );
context.addCoordinateOperation( src, dest, deprecatedProj );
QgsCoordinateTransform deprecatedTransform( src, dest, context );
QVERIFY( deprecatedTransform.isValid() );
QCOMPARE( deprecatedTransform.coordinateOperation(), deprecatedProj );
QCOMPARE( deprecatedTransform.instantiatedCoordinateOperationDetails().proj, deprecatedProj );
p2 = deprecatedTransform.transform( p );
QGSCOMPARENEAR( p2.x(), 102.496547, 0.000001 );
QGSCOMPARENEAR( p2.y(), 7.502139, 0.000001 );
p3 = deprecatedTransform.transform( p2, QgsCoordinateTransform::ReverseTransform );
QGSCOMPARENEAR( p3.x(), 102.5, 0.000001 );
QGSCOMPARENEAR( p3.y(), 7.5, 0.000001 );
// and in reverse
QgsCoordinateTransform deprecatedTransformRev( dest, src, context );
QVERIFY( deprecatedTransformRev.isValid() );
QCOMPARE( deprecatedTransformRev.coordinateOperation(), deprecatedProj );
QCOMPARE( deprecatedTransformRev.instantiatedCoordinateOperationDetails().proj, deprecatedProj );
p2 = deprecatedTransformRev.transform( QgsPointXY( 102.496547, 7.502139 ) );
QGSCOMPARENEAR( p2.x(), 102.5, 0.000001 );
QGSCOMPARENEAR( p2.y(), 7.5, 0.000001 );
p3 = deprecatedTransformRev.transform( p2, QgsCoordinateTransform::ReverseTransform );
QGSCOMPARENEAR( p3.x(), 102.496547, 0.000001 );
QGSCOMPARENEAR( p3.y(), 7.502139, 0.000001 );
}
void TestQgsCoordinateTransform::testCustomProjTransform()
{
// test custom proj string
// refs https://github.com/qgis/QGIS/issues/32928
QgsCoordinateReferenceSystem ss( QgsCoordinateReferenceSystem::fromProj( QStringLiteral( "+proj=longlat +ellps=GRS80 +towgs84=1,2,3,4,5,6,7 +no_defs" ) ) );
QgsCoordinateReferenceSystem dd( QStringLiteral( "EPSG:4326" ) );
QgsCoordinateTransform ct( ss, dd, QgsCoordinateTransformContext() );
QVERIFY( ct.isValid() );
QgsDebugMsg( ct.instantiatedCoordinateOperationDetails().proj );
QCOMPARE( ct.instantiatedCoordinateOperationDetails().proj,
QStringLiteral( "+proj=pipeline "
"+step +proj=unitconvert +xy_in=deg +xy_out=rad "
"+step +proj=push +v_3 "
"+step +proj=cart +ellps=GRS80 "
"+step +proj=helmert +x=1 +y=2 +z=3 +rx=4 +ry=5 +rz=6 +s=7 +convention=position_vector "
"+step +inv +proj=cart +ellps=WGS84 "
"+step +proj=pop +v_3 "
"+step +proj=unitconvert +xy_in=rad +xy_out=deg" ) );
}
QGSTEST_MAIN( TestQgsCoordinateTransform )
#include "testqgscoordinatetransform.moc"