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Start on test suite for georeferencer
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| /*************************************************************************** | ||
| testqgsgeorefencer.cpp | ||
| -------------------------- | ||
| Date : 2022-02-02 | ||
| Copyright : (C) 2022 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 "qgstest.h" | ||
| #include "qgisapp.h" | ||
| #include "qgsapplication.h" | ||
| #include "qgsvectorlayer.h" | ||
| #include "qgsfeature.h" | ||
| #include "qgsfeatureiterator.h" | ||
| #include "qgsgeometry.h" | ||
| #include "qgsvectordataprovider.h" | ||
| #include "qgsfieldcalculator.h" | ||
| #include "qgsproject.h" | ||
| #include "qgsmapcanvas.h" | ||
| #include "georeferencer/qgsgeoreftransform.h" | ||
|
|
||
| /** | ||
| * \ingroup UnitTests | ||
| * This is a unit test for georeferencer | ||
| */ | ||
| class TestQgsGeoreferencer : public QObject | ||
| { | ||
| Q_OBJECT | ||
| public: | ||
| TestQgsGeoreferencer(); | ||
|
|
||
| private slots: | ||
| void initTestCase();// will be called before the first testfunction is executed. | ||
| void cleanupTestCase();// will be called after the last testfunction was executed. | ||
| void init() {} // will be called before each testfunction is executed. | ||
| void cleanup() {} // will be called after every testfunction. | ||
| void testTransformNoExistingImage(); | ||
| void testTransformImageWithExistingGeoreference(); | ||
|
|
||
| private: | ||
| QgisApp *mQgisApp = nullptr; | ||
| }; | ||
|
|
||
| TestQgsGeoreferencer::TestQgsGeoreferencer() = default; | ||
|
|
||
| //runs before all tests | ||
| void TestQgsGeoreferencer::initTestCase() | ||
| { | ||
| qDebug() << "TestQgisAppClipboard::initTestCase()"; | ||
| // init QGIS's paths - true means that all path will be inited from prefix | ||
| QgsApplication::init(); | ||
| QgsApplication::initQgis(); | ||
| mQgisApp = new QgisApp(); | ||
| } | ||
|
|
||
| //runs after all tests | ||
| void TestQgsGeoreferencer::cleanupTestCase() | ||
| { | ||
| QgsApplication::exitQgis(); | ||
| } | ||
|
|
||
| void TestQgsGeoreferencer::testTransformNoExistingImage() | ||
| { | ||
| QgsGeorefTransform transform( QgsGcpTransformerInterface::TransformMethod::Linear ); | ||
|
|
||
| QVERIFY( !transform.hasExistingGeoreference() ); | ||
|
|
||
| QVERIFY( transform.updateParametersFromGcps( {QgsPointXY( 0, 0 ), QgsPointXY( 10, 0 ), QgsPointXY( 0, 30 ), QgsPointXY( 10, 30 )}, | ||
| {QgsPointXY( 10, 5 ), QgsPointXY( 16, 5 ), QgsPointXY( 10, 8 ), QgsPointXY( 16, 8 )}, true ) ); | ||
|
|
||
| QgsPointXY res; | ||
| QVERIFY( transform.transform( QgsPointXY( 0, 5 ), res, true ) ); | ||
| QCOMPARE( res.x(), 10 ); | ||
| QCOMPARE( res.y(), 5.5 ); | ||
| QVERIFY( transform.transform( QgsPointXY( 9, 25 ), res, true ) ); | ||
| QCOMPARE( res.x(), 15.4 ); | ||
| QCOMPARE( res.y(), 7.5 ); | ||
| // reverse transform | ||
| QVERIFY( transform.transform( QgsPointXY( 10, 5.5 ), res, false ) ); | ||
| QCOMPARE( res.x(), 0.0 ); | ||
| QCOMPARE( res.y(), 5.0 ); | ||
| QVERIFY( transform.transform( QgsPointXY( 15.4, 7.5 ), res, false ) ); | ||
| QCOMPARE( res.x(), 9.0 ); | ||
| QCOMPARE( res.y(), 25.0 ); | ||
| } | ||
|
|
||
| void TestQgsGeoreferencer::testTransformImageWithExistingGeoreference() | ||
| { | ||
| // load an image which is already georeferenced | ||
| QgsGeorefTransform transform( QgsGcpTransformerInterface::TransformMethod::Linear ); | ||
| transform.setRasterChangeCoords( QStringLiteral( TEST_DATA_DIR ) + QStringLiteral( "/landsat.tif" ) ); | ||
|
|
||
| QVERIFY( transform.mRasterChangeCoords.mHasExistingGeoreference ); | ||
| QGSCOMPARENEAR( transform.mRasterChangeCoords.mResX, 57, 0.00001 ); | ||
| QGSCOMPARENEAR( transform.mRasterChangeCoords.mResY, -57, 0.00001 ); | ||
| QGSCOMPARENEAR( transform.mRasterChangeCoords.mUL_X, 781662.375, 0.01 ); | ||
| QGSCOMPARENEAR( transform.mRasterChangeCoords.mUL_Y, 3350923.125, 0.01 ); | ||
|
|
||
| QgsPointXY res = transform.mRasterChangeCoords.toColumnLine( QgsPointXY( 783414, 3350122 ) ); | ||
| QGSCOMPARENEAR( res.x(), 30.7302631579, 0.01 ); | ||
| QGSCOMPARENEAR( res.y(), -14.0548245614, 0.01 ); | ||
| res = transform.mRasterChangeCoords.toXY( QgsPointXY( 30.7302631579, -14.0548245614 ) ); | ||
| QGSCOMPARENEAR( res.x(), 783414, 10 ); | ||
| QGSCOMPARENEAR( res.y(), 3350122, 10 ); | ||
|
|
||
| QVector<QgsPointXY> pixelCoords = transform.mRasterChangeCoords.getPixelCoords( | ||
| { | ||
| QgsPointXY( 783414, 3350122 ), | ||
| QgsPointXY( 791344, 3349795 ), | ||
| QgsPointXY( 783077, 3340937 ), | ||
| QgsPointXY( 791134, 3341401 ) | ||
| } ) ; | ||
|
|
||
| QCOMPARE( pixelCoords.size(), 4 ); | ||
| QGSCOMPARENEAR( pixelCoords.at( 0 ).x(), 30.7302631579, 0.01 ); | ||
| QGSCOMPARENEAR( pixelCoords.at( 0 ).y(), -14.0548245614, 0.01 ); | ||
| QGSCOMPARENEAR( pixelCoords.at( 1 ).x(), 169.8530701754, 0.01 ); | ||
| QGSCOMPARENEAR( pixelCoords.at( 1 ).y(), -19.7916666667, 0.01 ); | ||
| QGSCOMPARENEAR( pixelCoords.at( 2 ).x(), 24.8179824561, 0.01 ); | ||
| QGSCOMPARENEAR( pixelCoords.at( 2 ).y(), -175.1951754386, 0.01 ); | ||
| QGSCOMPARENEAR( pixelCoords.at( 3 ).x(), 166.168859649, 0.01 ); | ||
| QGSCOMPARENEAR( pixelCoords.at( 3 ).y(), -167.0548245614, 0.01 ); | ||
|
|
||
| QVERIFY( transform.hasExistingGeoreference() ); | ||
|
|
||
| // currently disabled -- it is ambiguous whether calling updateParametersFromGcps should be using PIXEL coordinates as source or layer CRS coordinates, and is quite broken either | ||
| // way. Here the disabled tests assume layer CRS coordinates, but in the actual georeferencer a mix of pixel/layer coordinates are used. | ||
| // it would be better if all calls to updateParametersFromGcps ALWAYS use pixel coordinates to avoid the confusion, with the caller transforming from layer CRS coordinates | ||
| // back to pixel coordinates before calling this method. | ||
| #if 0 | ||
| // source coordinates here should be raster CRS - ie. 32633 | ||
| // first use a "null" transform | ||
| QVERIFY( transform.updateParametersFromGcps( {QgsPointXY( 783414, 3350122 ), QgsPointXY( 791344, 3349795 ), QgsPointXY( 783077, 334093 ), QgsPointXY( 791134, 3341401 )}, | ||
| {QgsPointXY( 783414, 3350122 ), QgsPointXY( 791344, 3349795 ), QgsPointXY( 783077, 334093 ), QgsPointXY( 791134, 3341401 )}, true ) ); | ||
|
|
||
| QVERIFY( transform.transform( QgsPointXY( 30.7302631579, -14.0548245614 ), res, true ) ); | ||
| QGSCOMPARENEAR( res.x(), 783414, 1 ); | ||
| QGSCOMPARENEAR( res.y(), 3350122, 1 ); | ||
| QVERIFY( transform.transform( QgsPointXY( 166.168859649, -167.0548245614 ), res, true ) ); | ||
| QGSCOMPARENEAR( res.x(), 791134, 1 ); | ||
| QGSCOMPARENEAR( res.y(), 3341401, 1 ); | ||
| // reverse transform | ||
| QVERIFY( transform.transform( QgsPointXY( 783414, 3350122 ), res, false ) ); | ||
| QGSCOMPARENEAR( res.x(), 30.7302631579, 0.1 ); | ||
| QGSCOMPARENEAR( res.y(), -14.0548245614, 0.1 ); | ||
| QVERIFY( transform.transform( QgsPointXY( 791134, 3341401 ), res, false ) ); | ||
| QGSCOMPARENEAR( res.x(), 166.168859649, 0.1 ); | ||
| QGSCOMPARENEAR( res.y(), -167.0548245614, 0.1 ); | ||
|
|
||
| // with shift of 100, 200 | ||
| QVERIFY( transform.updateParametersFromGcps( {QgsPointXY( 783414, 3350122 ), QgsPointXY( 791344, 3349795 ), QgsPointXY( 783077, 334093 ), QgsPointXY( 791134, 3341401 )}, | ||
| {QgsPointXY( 783514, 3350322 ), QgsPointXY( 791444, 3349995 ), QgsPointXY( 783177, 334293 ), QgsPointXY( 791234, 3341601 )}, true ) ); | ||
|
|
||
| QVERIFY( transform.transform( QgsPointXY( 30.7302631579, -14.0548245614 ), res, true ) ); | ||
| QGSCOMPARENEAR( res.x(), 783514, 1 ); | ||
| QGSCOMPARENEAR( res.y(), 3350322, 1 ); | ||
| QVERIFY( transform.transform( QgsPointXY( 166.168859649, -167.0548245614 ), res, true ) ); | ||
| QGSCOMPARENEAR( res.x(), 791234, 1 ); | ||
| QGSCOMPARENEAR( res.y(), 3341601, 1 ); | ||
| // reverse transform | ||
| QVERIFY( transform.transform( QgsPointXY( 783514, 3350322 ), res, false ) ); | ||
| QGSCOMPARENEAR( res.x(), 30.7302631579, 0.1 ); | ||
| QGSCOMPARENEAR( res.y(), -14.0548245614, 0.1 ); | ||
| QVERIFY( transform.transform( QgsPointXY( 791234, 3341601 ), res, false ) ); | ||
| QGSCOMPARENEAR( res.x(), 166.168859649, 0.1 ); | ||
| QGSCOMPARENEAR( res.y(), -167.0548245614, 0.1 ); | ||
| #endif | ||
| } | ||
|
|
||
| QGSTEST_MAIN( TestQgsGeoreferencer ) | ||
| #include "testqgsgeoreferencer.moc" |