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211 lines
7.1 KiB
C++
211 lines
7.1 KiB
C++
/***************************************************************************
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testqgscoordinatetransform.cpp
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-----------------------
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begin : October 2014
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copyright : (C) 2014 by Nyall Dawson
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email : nyall dot dawson at gmail dot com
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***************************************************************************/
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/***************************************************************************
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* *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2 of the License, or *
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* (at your option) any later version. *
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* *
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***************************************************************************/
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#include "qgscoordinatetransform.h"
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#include "qgsapplication.h"
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#include "qgsrectangle.h"
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#include <QObject>
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#include "qgstest.h"
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class TestQgsCoordinateTransform: public QObject
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{
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Q_OBJECT
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private slots:
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void initTestCase();
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void cleanupTestCase();
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void transformBoundingBox();
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void copy();
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void assignment();
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void isValid();
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void isShortCircuited();
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private:
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};
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void TestQgsCoordinateTransform::initTestCase()
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{
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QgsApplication::init();
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QgsApplication::initQgis();
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}
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void TestQgsCoordinateTransform::cleanupTestCase()
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{
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QgsApplication::exitQgis();
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}
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void TestQgsCoordinateTransform::copy()
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{
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QgsCoordinateTransform uninitialized;
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QgsCoordinateTransform uninitializedCopy( uninitialized );
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QVERIFY( !uninitializedCopy.isValid() );
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QgsCoordinateReferenceSystem source;
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source.createFromId( 3111, QgsCoordinateReferenceSystem::EpsgCrsId );
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QgsCoordinateReferenceSystem destination;
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destination.createFromId( 4326, QgsCoordinateReferenceSystem::EpsgCrsId );
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QgsCoordinateTransform original( source, destination );
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QVERIFY( original.isValid() );
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QgsCoordinateTransform copy( original );
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QVERIFY( copy.isValid() );
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QCOMPARE( copy.sourceCrs().authid(), original.sourceCrs().authid() );
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QCOMPARE( copy.destinationCrs().authid(), original.destinationCrs().authid() );
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// force detachement of copy
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QgsCoordinateReferenceSystem newDest;
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newDest.createFromId( 3857, QgsCoordinateReferenceSystem::EpsgCrsId );
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copy.setDestinationCrs( newDest );
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QVERIFY( copy.isValid() );
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QCOMPARE( copy.destinationCrs().authid(), QString( "EPSG:3857" ) );
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QCOMPARE( original.destinationCrs().authid(), QString( "EPSG:4326" ) );
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}
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void TestQgsCoordinateTransform::assignment()
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{
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QgsCoordinateTransform uninitialized;
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QgsCoordinateTransform uninitializedCopy;
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uninitializedCopy = uninitialized;
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QVERIFY( !uninitializedCopy.isValid() );
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QgsCoordinateReferenceSystem source;
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source.createFromId( 3111, QgsCoordinateReferenceSystem::EpsgCrsId );
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QgsCoordinateReferenceSystem destination;
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destination.createFromId( 4326, QgsCoordinateReferenceSystem::EpsgCrsId );
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QgsCoordinateTransform original( source, destination );
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QVERIFY( original.isValid() );
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QgsCoordinateTransform copy;
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copy = original;
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QVERIFY( copy.isValid() );
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QCOMPARE( copy.sourceCrs().authid(), original.sourceCrs().authid() );
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QCOMPARE( copy.destinationCrs().authid(), original.destinationCrs().authid() );
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// force detachement of copy
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QgsCoordinateReferenceSystem newDest;
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newDest.createFromId( 3857, QgsCoordinateReferenceSystem::EpsgCrsId );
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copy.setDestinationCrs( newDest );
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QVERIFY( copy.isValid() );
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QCOMPARE( copy.destinationCrs().authid(), QString( "EPSG:3857" ) );
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QCOMPARE( original.destinationCrs().authid(), QString( "EPSG:4326" ) );
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// test assigning back to invalid
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copy = uninitialized;
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QVERIFY( !copy.isValid() );
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QVERIFY( original.isValid() );
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}
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void TestQgsCoordinateTransform::isValid()
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{
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QgsCoordinateTransform tr;
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QVERIFY( !tr.isValid() );
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QgsCoordinateReferenceSystem srs1;
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srs1.createFromSrid( 3994 );
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QgsCoordinateReferenceSystem srs2;
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srs2.createFromSrid( 4326 );
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// valid source, invalid destination
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QgsCoordinateTransform tr2( srs1, QgsCoordinateReferenceSystem() );
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QVERIFY( !tr2.isValid() );
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// invalid source, valid destination
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QgsCoordinateTransform tr3( QgsCoordinateReferenceSystem(), srs2 );
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QVERIFY( !tr3.isValid() );
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// valid source, valid destination
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QgsCoordinateTransform tr4( srs1, srs2 );
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QVERIFY( tr4.isValid() );
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// try to invalidate by setting source as invalid
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tr4.setSourceCrs( QgsCoordinateReferenceSystem() );
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QVERIFY( !tr4.isValid() );
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QgsCoordinateTransform tr5( srs1, srs2 );
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// try to invalidate by setting destination as invalid
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tr5.setDestinationCrs( QgsCoordinateReferenceSystem() );
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QVERIFY( !tr5.isValid() );
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}
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void TestQgsCoordinateTransform::isShortCircuited()
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{
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QgsCoordinateTransform tr;
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//invalid transform shortcircuits
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QVERIFY( tr.isShortCircuited() );
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QgsCoordinateReferenceSystem srs1;
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srs1.createFromSrid( 3994 );
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QgsCoordinateReferenceSystem srs2;
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srs2.createFromSrid( 4326 );
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// valid source, invalid destination
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QgsCoordinateTransform tr2( srs1, QgsCoordinateReferenceSystem() );
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QVERIFY( tr2.isShortCircuited() );
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// invalid source, valid destination
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QgsCoordinateTransform tr3( QgsCoordinateReferenceSystem(), srs2 );
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QVERIFY( tr3.isShortCircuited() );
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// equal, valid source and destination
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QgsCoordinateTransform tr4( srs1, srs1 );
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QVERIFY( tr4.isShortCircuited() );
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// valid but different source and destination
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QgsCoordinateTransform tr5( srs1, srs2 );
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QVERIFY( !tr5.isShortCircuited() );
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// try to short circuit by changing dest
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tr5.setDestinationCrs( srs1 );
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QVERIFY( tr5.isShortCircuited() );
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}
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void TestQgsCoordinateTransform::transformBoundingBox()
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{
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//test transforming a bounding box which crosses the 180 degree longitude line
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QgsCoordinateReferenceSystem sourceSrs;
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sourceSrs.createFromSrid( 3994 );
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QgsCoordinateReferenceSystem destSrs;
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destSrs.createFromSrid( 4326 );
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QgsCoordinateTransform tr( sourceSrs, destSrs );
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QgsRectangle crossingRect( 6374985, -3626584, 7021195, -3272435 );
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QgsRectangle resultRect = tr.transformBoundingBox( crossingRect, QgsCoordinateTransform::ForwardTransform, true );
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QgsRectangle expectedRect;
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expectedRect.setXMinimum( 175.771 );
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expectedRect.setYMinimum( -39.7222 );
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expectedRect.setXMaximum( -176.549 );
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expectedRect.setYMaximum( -36.3951 );
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qDebug( "BBox transform x min: %.17f", resultRect.xMinimum() );
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qDebug( "BBox transform x max: %.17f", resultRect.xMaximum() );
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qDebug( "BBox transform y min: %.17f", resultRect.yMinimum() );
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qDebug( "BBox transform y max: %.17f", resultRect.yMaximum() );
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QVERIFY( qgsDoubleNear( resultRect.xMinimum(), expectedRect.xMinimum(), 0.001 ) );
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QVERIFY( qgsDoubleNear( resultRect.yMinimum(), expectedRect.yMinimum(), 0.001 ) );
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QVERIFY( qgsDoubleNear( resultRect.xMaximum(), expectedRect.xMaximum(), 0.001 ) );
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QVERIFY( qgsDoubleNear( resultRect.yMaximum(), expectedRect.yMaximum(), 0.001 ) );
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}
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QGSTEST_MAIN( TestQgsCoordinateTransform )
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#include "testqgscoordinatetransform.moc"
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