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testqgs3drendering.cpp
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testqgs3drendering.cpp
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/***************************************************************************
testqgs3drendering.cpp
--------------------------------------
Date : July 2018
Copyright : (C) 2018 by Martin Dobias
Email : wonder dot sk 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 "qgslinestring.h"
#include "qgsmaplayerstylemanager.h"
#include "qgsmapthemecollection.h"
#include "qgsproject.h"
#include "qgsrasterlayer.h"
#include "qgsrastershader.h"
#include "qgssinglebandpseudocolorrenderer.h"
#include "qgsvectorlayer.h"
#include "qgsapplication.h"
#include "qgs3d.h"
#include "qgs3dmapscene.h"
#include "qgs3dmapsettings.h"
#include "qgs3dutils.h"
#include "qgscameracontroller.h"
#include "qgsdemterraingenerator.h"
#include "qgsflatterraingenerator.h"
#include "qgsline3dsymbol.h"
#include "qgsoffscreen3dengine.h"
#include "qgspolygon3dsymbol.h"
#include "qgsrulebased3drenderer.h"
#include "qgsvectorlayer3drenderer.h"
#include "qgspoint3dsymbol.h"
#include "qgssymbollayer.h"
#include "qgsmarkersymbollayer.h"
#include "qgssymbol.h"
#include "qgssinglesymbolrenderer.h"
#include "qgsfillsymbollayer.h"
#include "qgssimplelinematerialsettings.h"
#include "qgsfillsymbol.h"
#include "qgsmarkersymbol.h"
#include "qgsgoochmaterialsettings.h"
#include "qgs3dsceneexporter.h"
#include "qgsdirectionallightsettings.h"
#include "qgsmetalroughmaterialsettings.h"
#include "qgspointlightsettings.h"
#include <QFileInfo>
#include <QDir>
#include <QSignalSpy>
class QgsCameraController4Test;
class TestQgs3DRendering : public QgsTest
{
Q_OBJECT
public:
TestQgs3DRendering()
: QgsTest( QStringLiteral( "3D Rendering Tests" ), QStringLiteral( "3d" ) )
{}
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 testLights();
void testFlatTerrain();
void testDemTerrain();
void testTerrainShading();
void testEpsg4978LineRendering();
void testExtrudedPolygons();
void testPhongShading();
void testExtrudedPolygonsDataDefined();
void testExtrudedPolygonsGoochShading();
void testExtrudedPolygonsMetalRoughShading();
void testPolygonsEdges();
void testLineRendering();
void testLineRenderingCurved();
void testLineRenderingDataDefinedColors();
void testBufferedLineRendering();
void testBufferedLineRenderingWidth();
void testMapTheme();
void testRuleBasedRenderer();
void testAnimationExport();
void testBillboardRendering();
void testInstancedRendering();
void testFilteredFlatTerrain();
void testFilteredDemTerrain();
void testFilteredExtrudedPolygons();
void testDepthBuffer();
void testAmbientOcclusion();
void testDebugMap();
void test3DSceneExporter();
private:
QImage convertDepthImageToGray16Image( const QImage &depthImage );
void do3DSceneExport( int zoomLevelsCount, int expectedObjectCount, int maxFaceCount, Qgs3DMapScene *scene, QgsPolygon3DSymbol *symbol3d,
QgsVectorLayer *layerPoly, QgsOffscreen3DEngine *engine );
std::unique_ptr<QgsProject> mProject;
QgsRasterLayer *mLayerDtm = nullptr;
QgsRasterLayer *mLayerRgb = nullptr;
QgsVectorLayer *mLayerBuildings = nullptr;
};
/**
* \ingroup UnitTests
* Helper class to access QgsCameraController properties
*/
class QgsCameraController4Test : public QgsCameraController
{
Q_OBJECT
public:
QgsCameraController4Test( Qgs3DMapScene *parent = nullptr )
: QgsCameraController( parent )
{ }
// wraps protected methods
void superOnWheel( Qt3DInput::QWheelEvent *wheel ) { onWheel( wheel ); }
void superOnMousePressed( Qt3DInput::QMouseEvent *mouse ) { onMousePressed( mouse ); }
double superSampleDepthBuffer( const QImage &buffer, int px, int py ) { return sampleDepthBuffer( buffer, px, py ); }
// wraps protected member vars
QVector3D zoomPoint() { return mZoomPoint; }
double cumulatedWheelY() { return mCumulatedWheelY; }
Qt3DRender::QCamera *cameraBefore() { return mCameraBefore.get(); }
QgsCameraPose *cameraPose() { return &mCameraPose; }
};
QImage TestQgs3DRendering::convertDepthImageToGray16Image( const QImage &depthImage )
{
QImage grayImage( depthImage.width(), depthImage.height(), QImage::Format_Grayscale16 );
// compute image min/max depth values
double minV = 9999999.0;
double maxV = -9999999.0;
for ( int x = 0; x < grayImage.width(); x++ )
{
for ( int y = 0; y < grayImage.height(); y++ )
{
double d = Qgs3DUtils::decodeDepth( depthImage.pixel( x, y ) );
if ( d > maxV ) maxV = d;
else if ( d < minV ) minV = d;
}
}
// transform depth value to gray value
double factor = 65635.0 / ( maxV - minV );
for ( int x = 0; x < grayImage.width(); x++ )
{
for ( int y = 0; y < grayImage.height(); y++ )
{
double d = Qgs3DUtils::decodeDepth( depthImage.pixel( x, y ) );
unsigned short v = ( unsigned short )( factor * ( d - minV ) );
QRgba64 col = QRgba64::fromRgba64( v, v, v, ( quint16 )65635 );
grayImage.setPixelColor( x, y, QColor( col ) );
}
}
return grayImage;
}
// runs before all tests
void TestQgs3DRendering::initTestCase()
{
// init QGIS's paths - true means that all path will be inited from prefix
QgsApplication::init();
QgsApplication::initQgis();
Qgs3D::initialize();
mProject.reset( new QgsProject );
mLayerDtm = new QgsRasterLayer( testDataPath( "/3d/dtm.tif" ), "dtm", "gdal" );
QVERIFY( mLayerDtm->isValid() );
mProject->addMapLayer( mLayerDtm );
mLayerRgb = new QgsRasterLayer( testDataPath( "/3d/rgb.tif" ), "rgb", "gdal" );
QVERIFY( mLayerRgb->isValid() );
mProject->addMapLayer( mLayerRgb );
mLayerBuildings = new QgsVectorLayer( testDataPath( "/3d/buildings.shp" ), "buildings", "ogr" );
QVERIFY( mLayerBuildings->isValid() );
mProject->addMapLayer( mLayerBuildings );
// best to keep buildings without 2D renderer so it is not painted on the terrain
// so we do not get some possible artifacts
mLayerBuildings->setRenderer( nullptr );
QgsPhongMaterialSettings materialSettings;
materialSettings.setAmbient( Qt::lightGray );
QgsPolygon3DSymbol *symbol3d = new QgsPolygon3DSymbol;
symbol3d->setMaterialSettings( materialSettings.clone() );
symbol3d->setExtrusionHeight( 10.f );
QgsVectorLayer3DRenderer *renderer3d = new QgsVectorLayer3DRenderer( symbol3d );
mLayerBuildings->setRenderer3D( renderer3d );
mProject->setCrs( mLayerDtm->crs() );
//
// prepare styles for DTM layer
//
mLayerDtm->styleManager()->addStyleFromLayer( "grayscale" );
double vMin = 44, vMax = 198;
QColor cMin = Qt::red, cMax = Qt::yellow;
// change renderer for the new style
std::unique_ptr<QgsColorRampShader> colorRampShader( new QgsColorRampShader( vMin, vMax ) );
colorRampShader->setColorRampItemList( QList<QgsColorRampShader::ColorRampItem>()
<< QgsColorRampShader::ColorRampItem( vMin, cMin )
<< QgsColorRampShader::ColorRampItem( vMax, cMax ) );
std::unique_ptr<QgsRasterShader> shader( new QgsRasterShader( vMin, vMax ) );
shader->setRasterShaderFunction( colorRampShader.release() );
QgsSingleBandPseudoColorRenderer *r = new QgsSingleBandPseudoColorRenderer( mLayerDtm->renderer()->input(), 1, shader.release() );
mLayerDtm->setRenderer( r );
mLayerDtm->styleManager()->addStyleFromLayer( "my_style" );
mLayerDtm->styleManager()->setCurrentStyle( "grayscale" );
//
// add map theme
//
QgsMapThemeCollection::MapThemeLayerRecord layerRecord( mLayerDtm );
layerRecord.usingCurrentStyle = true;
layerRecord.currentStyle = "my_style";
QgsMapThemeCollection::MapThemeRecord record;
record.addLayerRecord( layerRecord );
mProject->mapThemeCollection()->insert( "theme_dtm", record );
}
//runs after all tests
void TestQgs3DRendering::cleanupTestCase()
{
mProject.reset();
QgsApplication::exitQgis();
}
void TestQgs3DRendering::testLights()
{
// test light change signals
Qgs3DMapSettings map;
QSignalSpy lightSourceChangedSpy( &map, &Qgs3DMapSettings::lightSourcesChanged );
QCOMPARE( map.lightSources().size(), 0 );
map.setLightSources( {} );
QCOMPARE( lightSourceChangedSpy.size(), 0 );
QgsDirectionalLightSettings *defaultLight = new QgsDirectionalLightSettings();;
map.setLightSources( { defaultLight } );
QCOMPARE( lightSourceChangedSpy.size(), 1 );
// set identical light sources, should be no signal
map.setLightSources( { defaultLight->clone() } );
QCOMPARE( lightSourceChangedSpy.size(), 1 );
// different light settings
QgsDirectionalLightSettings *dsLight = new QgsDirectionalLightSettings();
dsLight->setColor( QColor( 255, 0, 0 ) );
map.setLightSources( { dsLight } );
QCOMPARE( lightSourceChangedSpy.size(), 2 );
// different light type
std::unique_ptr< QgsPointLightSettings > pointLight = std::make_unique< QgsPointLightSettings >();
pointLight->setColor( QColor( 255, 0, 0 ) );
map.setLightSources( { pointLight->clone() } );
QCOMPARE( lightSourceChangedSpy.size(), 3 );
// different number of lights
map.setLightSources( { pointLight->clone(), new QgsDirectionalLightSettings() } );
QCOMPARE( lightSourceChangedSpy.size(), 4 );
// a mix of types, but the same settings. Should be no new signals
map.setLightSources( { pointLight->clone(), new QgsDirectionalLightSettings() } );
QCOMPARE( lightSourceChangedSpy.size(), 4 );
}
void TestQgs3DRendering::testFlatTerrain()
{
const QgsRectangle fullExtent = mLayerDtm->extent();
Qgs3DMapSettings *map = new Qgs3DMapSettings;
map->setCrs( mProject->crs() );
map->setExtent( fullExtent );
map->setLayers( QList<QgsMapLayer *>() << mLayerRgb );
QgsFlatTerrainGenerator *flatTerrain = new QgsFlatTerrainGenerator;
flatTerrain->setCrs( map->crs() );
map->setTerrainGenerator( flatTerrain );
QgsOffscreen3DEngine engine;
Qgs3DMapScene *scene = new Qgs3DMapScene( *map, &engine );
engine.setRootEntity( scene );
// look from the top
scene->cameraController()->setLookingAtPoint( QgsVector3D( 0, 0, 0 ), 2500, 0, 0 );
// When running the test on Travis, it would initially return empty rendered image.
// Capturing the initial image and throwing it away fixes that. Hopefully we will
// find a better fix in the future.
Qgs3DUtils::captureSceneImage( engine, scene );
QImage img = Qgs3DUtils::captureSceneImage( engine, scene );
QGSVERIFYIMAGECHECK( "flat_terrain_1", "flat_terrain_1", img, QString(), 40, QSize( 0, 0 ), 2 );
// tilted view (pitch = 60 degrees)
scene->cameraController()->setLookingAtPoint( QgsVector3D( 0, 0, 0 ), 2500, 60, 0 );
QImage img2 = Qgs3DUtils::captureSceneImage( engine, scene );
QGSVERIFYIMAGECHECK( "flat_terrain_2", "flat_terrain_2", img2, QString(), 40, QSize( 0, 0 ), 2 );
// also add horizontal rotation (yaw = 45 degrees)
scene->cameraController()->setLookingAtPoint( QgsVector3D( 0, 0, 0 ), 2500, 60, 45 );
QImage img3 = Qgs3DUtils::captureSceneImage( engine, scene );
QGSVERIFYIMAGECHECK( "flat_terrain_3", "flat_terrain_3", img3, QString(), 40, QSize( 0, 0 ), 2 );
// change camera lens field of view
map->setFieldOfView( 85.0f );
QImage img4 = Qgs3DUtils::captureSceneImage( engine, scene );
delete scene;
delete map;
QGSVERIFYIMAGECHECK( "flat_terrain_4", "flat_terrain_4", img4, QString(), 40, QSize( 0, 0 ), 2 );
}
void TestQgs3DRendering::testDemTerrain()
{
const QgsRectangle fullExtent = mLayerDtm->extent();
Qgs3DMapSettings *map = new Qgs3DMapSettings;
map->setCrs( mProject->crs() );
map->setExtent( fullExtent );
map->setLayers( QList<QgsMapLayer *>() << mLayerRgb );
QgsDemTerrainGenerator *demTerrain = new QgsDemTerrainGenerator;
demTerrain->setLayer( mLayerDtm );
map->setTerrainGenerator( demTerrain );
map->setTerrainVerticalScale( 3 );
QgsOffscreen3DEngine engine;
Qgs3DMapScene *scene = new Qgs3DMapScene( *map, &engine );
engine.setRootEntity( scene );
scene->cameraController()->setLookingAtPoint( QgsVector3D( 0, 0, 0 ), 2000, 60, 0 );
// When running the test on Travis, it would initially return empty rendered image.
// Capturing the initial image and throwing it away fixes that. Hopefully we will
// find a better fix in the future.
Qgs3DUtils::captureSceneImage( engine, scene );
QImage img3 = Qgs3DUtils::captureSceneImage( engine, scene );
delete scene;
delete map;
QGSVERIFYIMAGECHECK( "dem_terrain_1", "dem_terrain_1", img3, QString(), 40, QSize( 0, 0 ), 2 );
}
void TestQgs3DRendering::testTerrainShading()
{
const QgsRectangle fullExtent = mLayerDtm->extent();
Qgs3DMapSettings *map = new Qgs3DMapSettings;
map->setCrs( mProject->crs() );
map->setExtent( fullExtent );
// no terrain layers set!
QgsDemTerrainGenerator *demTerrain = new QgsDemTerrainGenerator;
demTerrain->setLayer( mLayerDtm );
map->setTerrainGenerator( demTerrain );
map->setTerrainVerticalScale( 3 );
QgsPhongMaterialSettings terrainMaterial;
terrainMaterial.setAmbient( QColor( 0, 0, 0 ) );
terrainMaterial.setDiffuse( QColor( 255, 255, 0 ) );
terrainMaterial.setSpecular( QColor( 255, 255, 255 ) );
map->setTerrainShadingMaterial( terrainMaterial );
map->setTerrainShadingEnabled( true );
QgsPointLightSettings defaultLight;
defaultLight.setPosition( QgsVector3D( 0, 1000, 0 ) );
defaultLight.setIntensity( 0.5 );
map->setLightSources( {defaultLight.clone() } );
QgsOffscreen3DEngine engine;
Qgs3DMapScene *scene = new Qgs3DMapScene( *map, &engine );
engine.setRootEntity( scene );
scene->cameraController()->setLookingAtPoint( QgsVector3D( 0, 0, 0 ), 2000, 60, 0 );
// When running the test on Travis, it would initially return empty rendered image.
// Capturing the initial image and throwing it away fixes that. Hopefully we will
// find a better fix in the future.
Qgs3DUtils::captureSceneImage( engine, scene );
QImage img3 = Qgs3DUtils::captureSceneImage( engine, scene );
delete scene;
delete map;
QGSVERIFYIMAGECHECK( "shaded_terrain_no_layers", "shaded_terrain_no_layers", img3, QString(), 40, QSize( 0, 0 ), 2 );
}
void TestQgs3DRendering::testExtrudedPolygons()
{
const QgsRectangle fullExtent = mLayerDtm->extent();
Qgs3DMapSettings *map = new Qgs3DMapSettings;
map->setCrs( mProject->crs() );
map->setExtent( fullExtent );
map->setLayers( QList<QgsMapLayer *>() << mLayerBuildings << mLayerRgb );
QgsPointLightSettings defaultLight;
defaultLight.setIntensity( 0.5 );
defaultLight.setPosition( QgsVector3D( 0, 1000, 0 ) );
map->setLightSources( {defaultLight.clone() } );
QgsFlatTerrainGenerator *flatTerrain = new QgsFlatTerrainGenerator;
flatTerrain->setCrs( map->crs() );
map->setTerrainGenerator( flatTerrain );
QgsOffscreen3DEngine engine;
Qgs3DMapScene *scene = new Qgs3DMapScene( *map, &engine );
engine.setRootEntity( scene );
scene->cameraController()->setLookingAtPoint( QgsVector3D( 0, 0, 250 ), 500, 45, 0 );
// When running the test on Travis, it would initially return empty rendered image.
// Capturing the initial image and throwing it away fixes that. Hopefully we will
// find a better fix in the future.
Qgs3DUtils::captureSceneImage( engine, scene );
QImage img = Qgs3DUtils::captureSceneImage( engine, scene );
QGSVERIFYIMAGECHECK( "polygon3d_extrusion", "polygon3d_extrusion", img, QString(), 40, QSize( 0, 0 ), 2 );
// change opacity
QgsPhongMaterialSettings materialSettings;
materialSettings.setAmbient( Qt::lightGray );
materialSettings.setOpacity( 0.5f );
QgsPolygon3DSymbol *symbol3dOpacity = new QgsPolygon3DSymbol;
symbol3dOpacity->setMaterialSettings( materialSettings.clone() );
symbol3dOpacity->setExtrusionHeight( 10.f );
QgsVectorLayer3DRenderer *renderer3dOpacity = new QgsVectorLayer3DRenderer( symbol3dOpacity );
mLayerBuildings->setRenderer3D( renderer3dOpacity );
QImage img2 = Qgs3DUtils::captureSceneImage( engine, scene );
delete scene;
delete map;
QGSVERIFYIMAGECHECK( "polygon3d_extrusion_opacity", "polygon3d_extrusion_opacity", img2, QString(), 40, QSize( 0, 0 ), 2 );
}
void TestQgs3DRendering::testPhongShading()
{
const QgsRectangle fullExtent = mLayerDtm->extent();
std::unique_ptr< QgsVectorLayer > buildings = std::make_unique< QgsVectorLayer >( testDataPath( "/3d/buildings.shp" ), "buildings", "ogr" );
QVERIFY( buildings->isValid() );
QgsPhongMaterialSettings materialSettings;
materialSettings.setAmbient( QColor( 0, 100, 0 ) );
materialSettings.setDiffuse( QColor( 255, 0, 255 ) );
materialSettings.setSpecular( QColor( 0, 255, 255 ) );
materialSettings.setShininess( 2 );
materialSettings.setAmbientCoefficient( 0.3 );
materialSettings.setDiffuseCoefficient( 0.8 );
materialSettings.setSpecularCoefficient( 0.7 );
QgsPolygon3DSymbol *symbol3d = new QgsPolygon3DSymbol;
symbol3d->setMaterialSettings( materialSettings.clone() );
symbol3d->setExtrusionHeight( 10.f );
QgsVectorLayer3DRenderer *renderer3d = new QgsVectorLayer3DRenderer( symbol3d );
buildings->setRenderer3D( renderer3d );
Qgs3DMapSettings *map = new Qgs3DMapSettings;
map->setCrs( mProject->crs() );
map->setExtent( fullExtent );
map->setLayers( QList<QgsMapLayer *>() << buildings.get() );
QgsPointLightSettings defaultLight;
defaultLight.setIntensity( 0.5 );
defaultLight.setPosition( QgsVector3D( 0, 1000, 0 ) );
map->setLightSources( {defaultLight.clone() } );
QgsFlatTerrainGenerator *flatTerrain = new QgsFlatTerrainGenerator;
flatTerrain->setCrs( map->crs() );
map->setTerrainGenerator( flatTerrain );
QgsOffscreen3DEngine engine;
Qgs3DMapScene *scene = new Qgs3DMapScene( *map, &engine );
engine.setRootEntity( scene );
scene->cameraController()->setLookingAtPoint( QgsVector3D( 0, 0, 250 ), 300, 45, 0 );
// When running the test on Travis, it would initially return empty rendered image.
// Capturing the initial image and throwing it away fixes that. Hopefully we will
// find a better fix in the future.
Qgs3DUtils::captureSceneImage( engine, scene );
QImage img = Qgs3DUtils::captureSceneImage( engine, scene );
QGSVERIFYIMAGECHECK( "phong_shading", "phong_shading", img, QString(), 40, QSize( 0, 0 ), 2 );
}
void TestQgs3DRendering::testExtrudedPolygonsDataDefined()
{
QgsPropertyCollection propertyColection;
QgsProperty diffuseColor;
QgsProperty ambientColor;
QgsProperty specularColor;
diffuseColor.setExpressionString( QStringLiteral( "color_rgb( 120*(\"ogc_fid\"%3),125,0)" ) );
ambientColor.setExpressionString( QStringLiteral( "color_rgb( 120,(\"ogc_fid\"%2)*255,0)" ) );
specularColor.setExpressionString( QStringLiteral( "'yellow'" ) );
propertyColection.setProperty( QgsAbstractMaterialSettings::Property::Diffuse, diffuseColor );
propertyColection.setProperty( QgsAbstractMaterialSettings::Property::Ambient, ambientColor );
propertyColection.setProperty( QgsAbstractMaterialSettings::Property::Specular, specularColor );
QgsPhongMaterialSettings materialSettings;
materialSettings.setDataDefinedProperties( propertyColection );
materialSettings.setAmbient( Qt::red );
materialSettings.setShininess( 1 );
QgsPolygon3DSymbol *symbol3d = new QgsPolygon3DSymbol;
symbol3d->setMaterialSettings( materialSettings.clone() );
symbol3d->setExtrusionHeight( 10.f );
QgsVectorLayer3DRenderer *renderer3d = new QgsVectorLayer3DRenderer( symbol3d );
mLayerBuildings->setRenderer3D( renderer3d );
const QgsRectangle fullExtent = mLayerDtm->extent();
Qgs3DMapSettings *map = new Qgs3DMapSettings;
map->setCrs( mProject->crs() );
map->setExtent( fullExtent );
map->setLayers( QList<QgsMapLayer *>() << mLayerBuildings << mLayerRgb );
QgsPointLightSettings defaultLight;
defaultLight.setIntensity( 0.5 );
defaultLight.setPosition( QgsVector3D( 0, 1000, 0 ) );
map->setLightSources( { defaultLight.clone() } );
QgsFlatTerrainGenerator *flatTerrain = new QgsFlatTerrainGenerator;
flatTerrain->setCrs( map->crs() );
map->setTerrainGenerator( flatTerrain );
QgsOffscreen3DEngine engine;
Qgs3DMapScene *scene = new Qgs3DMapScene( *map, &engine );
engine.setRootEntity( scene );
scene->cameraController()->setLookingAtPoint( QgsVector3D( 0, 0, 250 ), 500, 45, 0 );
// When running the test on Travis, it would initially return empty rendered image.
// Capturing the initial image and throwing it away fixes that. Hopefully we will
// find a better fix in the future.
Qgs3DUtils::captureSceneImage( engine, scene );
QImage img = Qgs3DUtils::captureSceneImage( engine, scene );
delete scene;
delete map;
QGSVERIFYIMAGECHECK( "polygon3d_extrusion_data_defined", "polygon3d_extrusion_data_defined", img, QString(), 40, QSize( 0, 0 ), 2 );
}
void TestQgs3DRendering::testExtrudedPolygonsGoochShading()
{
const QgsRectangle fullExtent = mLayerDtm->extent();
Qgs3DMapSettings *map = new Qgs3DMapSettings;
map->setCrs( mProject->crs() );
QgsPointLightSettings defaultLight;
defaultLight.setIntensity( 0.5 );
defaultLight.setPosition( QgsVector3D( 0, 1000, 0 ) );
map->setLightSources( {defaultLight.clone() } );
map->setExtent( fullExtent );
map->setLayers( QList<QgsMapLayer *>() << mLayerBuildings << mLayerRgb );
QgsFlatTerrainGenerator *flatTerrain = new QgsFlatTerrainGenerator;
flatTerrain->setCrs( map->crs() );
map->setTerrainGenerator( flatTerrain );
QgsOffscreen3DEngine engine;
Qgs3DMapScene *scene = new Qgs3DMapScene( *map, &engine );
engine.setRootEntity( scene );
QgsGoochMaterialSettings materialSettings;
materialSettings.setWarm( QColor( 224, 224, 17 ) );
materialSettings.setCool( QColor( 21, 187, 235 ) );
materialSettings.setAlpha( 0.2f );
materialSettings.setBeta( 0.6f );
QgsPolygon3DSymbol *symbol3d = new QgsPolygon3DSymbol;
symbol3d->setMaterialSettings( materialSettings.clone() );
symbol3d->setExtrusionHeight( 10.f );
QgsVectorLayer3DRenderer *renderer3dOpacity = new QgsVectorLayer3DRenderer( symbol3d );
mLayerBuildings->setRenderer3D( renderer3dOpacity );
scene->cameraController()->setLookingAtPoint( QgsVector3D( 0, 0, 250 ), 500, 45, 0 );
// When running the test on Travis, it would initially return empty rendered image.
// Capturing the initial image and throwing it away fixes that. Hopefully we will
// find a better fix in the future.
Qgs3DUtils::captureSceneImage( engine, scene );
QImage img = Qgs3DUtils::captureSceneImage( engine, scene );
delete scene;
delete map;
QGSVERIFYIMAGECHECK( "polygon3d_extrusion_gooch_shading", "polygon3d_extrusion_gooch_shading", img, QString(), 40, QSize( 0, 0 ), 2 );
}
void TestQgs3DRendering::testExtrudedPolygonsMetalRoughShading()
{
const QgsRectangle fullExtent = mLayerDtm->extent();
std::unique_ptr< QgsVectorLayer > buildings = std::make_unique< QgsVectorLayer >( testDataPath( "/3d/buildings.shp" ), "buildings", "ogr" );
QVERIFY( buildings->isValid() );
QgsMetalRoughMaterialSettings materialSettings;
materialSettings.setBaseColor( QColor( 255, 0, 255 ) );
materialSettings.setMetalness( 0.5 );
materialSettings.setRoughness( 0.3 );
QgsPolygon3DSymbol *symbol3d = new QgsPolygon3DSymbol;
symbol3d->setMaterialSettings( materialSettings.clone() );
symbol3d->setExtrusionHeight( 10.f );
QgsVectorLayer3DRenderer *renderer3d = new QgsVectorLayer3DRenderer( symbol3d );
buildings->setRenderer3D( renderer3d );
Qgs3DMapSettings *map = new Qgs3DMapSettings;
map->setCrs( mProject->crs() );
map->setExtent( fullExtent );
map->setLayers( QList<QgsMapLayer *>() << buildings.get() );
QgsPointLightSettings defaultLight;
defaultLight.setIntensity( 0.9 );
defaultLight.setPosition( QgsVector3D( 0, 1000, 0 ) );
map->setLightSources( {defaultLight.clone() } );
QgsFlatTerrainGenerator *flatTerrain = new QgsFlatTerrainGenerator;
flatTerrain->setCrs( map->crs() );
map->setTerrainGenerator( flatTerrain );
QgsOffscreen3DEngine engine;
Qgs3DMapScene *scene = new Qgs3DMapScene( *map, &engine );
engine.setRootEntity( scene );
scene->cameraController()->setLookingAtPoint( QgsVector3D( 0, 0, 250 ), 300, 45, 0 );
// When running the test on Travis, it would initially return empty rendered image.
// Capturing the initial image and throwing it away fixes that. Hopefully we will
// find a better fix in the future.
Qgs3DUtils::captureSceneImage( engine, scene );
QImage img = Qgs3DUtils::captureSceneImage( engine, scene );
QGSVERIFYIMAGECHECK( "metal_rough", "metal_rough", img, QString(), 40, QSize( 0, 0 ), 2 );
}
void TestQgs3DRendering::testPolygonsEdges()
{
const QgsRectangle fullExtent = mLayerDtm->extent();
Qgs3DMapSettings *map = new Qgs3DMapSettings;
map->setCrs( mProject->crs() );
map->setExtent( fullExtent );
QgsPhongMaterialSettings materialSettings;
materialSettings.setAmbient( Qt::lightGray );
QgsPolygon3DSymbol *symbol3d = new QgsPolygon3DSymbol;
symbol3d->setMaterialSettings( materialSettings.clone() );
symbol3d->setExtrusionHeight( 10.f );
symbol3d->setOffset( 20.f );
symbol3d->setEdgesEnabled( true );
symbol3d->setEdgeWidth( 8 );
symbol3d->setEdgeColor( QColor( 255, 0, 0 ) );
std::unique_ptr< QgsVectorLayer > layer( mLayerBuildings->clone() );
std::unique_ptr< QgsSimpleFillSymbolLayer > simpleFill = std::make_unique< QgsSimpleFillSymbolLayer >( QColor( 0, 0, 0 ), Qt::SolidPattern, QColor( 0, 0, 0 ), Qt::NoPen );
std::unique_ptr< QgsFillSymbol > fillSymbol = std::make_unique< QgsFillSymbol >( QgsSymbolLayerList() << simpleFill.release() );
layer->setRenderer( new QgsSingleSymbolRenderer( fillSymbol.release() ) );
QgsVectorLayer3DRenderer *renderer3d = new QgsVectorLayer3DRenderer( symbol3d );
layer->setRenderer3D( renderer3d );
map->setLayers( QList<QgsMapLayer *>() << layer.get() );
QgsPointLightSettings defaultLight;
defaultLight.setIntensity( 0.5 );
defaultLight.setPosition( QgsVector3D( 0, 1000, 0 ) );
map->setLightSources( { defaultLight.clone() } );
QgsFlatTerrainGenerator *flatTerrain = new QgsFlatTerrainGenerator;
flatTerrain->setCrs( map->crs() );
map->setTerrainGenerator( flatTerrain );
QgsOffscreen3DEngine engine;
Qgs3DMapScene *scene = new Qgs3DMapScene( *map, &engine );
engine.setRootEntity( scene );
scene->cameraController()->setLookingAtPoint( QgsVector3D( 0, 0, 250 ), 100, 45, 0 );
// When running the test on Travis, it would initially return empty rendered image.
// Capturing the initial image and throwing it away fixes that. Hopefully we will
// find a better fix in the future.
Qgs3DUtils::captureSceneImage( engine, scene );
QImage img = Qgs3DUtils::captureSceneImage( engine, scene );
delete scene;
delete map;
QGSVERIFYIMAGECHECK( "polygon_edges_height", "polygon_edges_height", img, QString(), 40, QSize( 0, 0 ), 2 );
}
void TestQgs3DRendering::testLineRendering()
{
const QgsRectangle fullExtent( 0, 0, 1000, 1000 );
QgsVectorLayer *layerLines = new QgsVectorLayer( "LineString?crs=EPSG:27700", "lines", "memory" );
QgsLine3DSymbol *lineSymbol = new QgsLine3DSymbol;
lineSymbol->setRenderAsSimpleLines( true );
lineSymbol->setWidth( 10 );
QgsSimpleLineMaterialSettings matSettings;
matSettings.setAmbient( Qt::red );
lineSymbol->setMaterialSettings( matSettings.clone() );
layerLines->setRenderer3D( new QgsVectorLayer3DRenderer( lineSymbol ) );
QVector<QgsPoint> pts;
pts << QgsPoint( 0, 0, 10 ) << QgsPoint( 0, 1000, 10 ) << QgsPoint( 1000, 1000, 10 ) << QgsPoint( 1000, 0, 10 );
pts << QgsPoint( 1000, 0, 500 ) << QgsPoint( 1000, 1000, 500 ) << QgsPoint( 0, 1000, 500 ) << QgsPoint( 0, 0, 500 );
QgsFeature f1( layerLines->fields() );
f1.setGeometry( QgsGeometry( new QgsLineString( pts ) ) );
QgsFeatureList flist;
flist << f1;
layerLines->dataProvider()->addFeatures( flist );
Qgs3DMapSettings *map = new Qgs3DMapSettings;
map->setCrs( mProject->crs() );
map->setExtent( fullExtent );
map->setLayers( QList<QgsMapLayer *>() << layerLines );
QgsFlatTerrainGenerator *flatTerrain = new QgsFlatTerrainGenerator;
flatTerrain->setCrs( map->crs() );
map->setTerrainGenerator( flatTerrain );
QgsOffscreen3DEngine engine;
Qgs3DMapScene *scene = new Qgs3DMapScene( *map, &engine );
engine.setRootEntity( scene );
// look from the top
scene->cameraController()->setLookingAtPoint( QgsVector3D( 0, 0, 0 ), 2500, 0, 0 );
// When running the test on Travis, it would initially return empty rendered image.
// Capturing the initial image and throwing it away fixes that. Hopefully we will
// find a better fix in the future.
Qgs3DUtils::captureSceneImage( engine, scene );
QImage img = Qgs3DUtils::captureSceneImage( engine, scene );
QGSVERIFYIMAGECHECK( "line_rendering_1", "line_rendering_1", img, QString(), 40, QSize( 0, 0 ), 2 );
// more perspective look
scene->cameraController()->setLookingAtPoint( QgsVector3D( 0, 0, 0 ), 2500, 45, 45 );
QImage img2 = Qgs3DUtils::captureSceneImage( engine, scene );
delete scene;
delete map;
delete layerLines;
QGSVERIFYIMAGECHECK( "line_rendering_2", "line_rendering_2", img2, QString(), 40, QSize( 0, 0 ), 2 );
}
void TestQgs3DRendering::testLineRenderingCurved()
{
// test rendering of compound curve lines works
const QgsRectangle fullExtent( 0, 0, 1000, 1000 );
QgsVectorLayer *layerLines = new QgsVectorLayer( "CompoundCurve?crs=EPSG:27700", "lines", "memory" );
QgsLine3DSymbol *lineSymbol = new QgsLine3DSymbol;
lineSymbol->setRenderAsSimpleLines( true );
lineSymbol->setWidth( 10 );
QgsSimpleLineMaterialSettings matSettings;
matSettings.setAmbient( Qt::red );
lineSymbol->setMaterialSettings( matSettings.clone() );
layerLines->setRenderer3D( new QgsVectorLayer3DRenderer( lineSymbol ) );
QVector<QgsPoint> pts;
pts << QgsPoint( 0, 0, 10 ) << QgsPoint( 0, 1000, 10 ) << QgsPoint( 1000, 1000, 10 ) << QgsPoint( 1000, 0, 10 );
std::unique_ptr< QgsCompoundCurve > curve = std::make_unique< QgsCompoundCurve >();
curve->addCurve( new QgsLineString( pts ) );
pts.clear();
pts << QgsPoint( 1000, 0, 10 ) << QgsPoint( 1000, 0, 500 ) << QgsPoint( 1000, 1000, 500 ) << QgsPoint( 0, 1000, 500 ) << QgsPoint( 0, 0, 500 );
curve->addCurve( new QgsLineString( pts ) );
QgsFeature f1( layerLines->fields() );
f1.setGeometry( QgsGeometry( std::move( curve ) ) );
QgsFeatureList flist;
flist << f1;
layerLines->dataProvider()->addFeatures( flist );
Qgs3DMapSettings *map = new Qgs3DMapSettings;
map->setCrs( mProject->crs() );
map->setExtent( fullExtent );
map->setLayers( QList<QgsMapLayer *>() << layerLines );
QgsFlatTerrainGenerator *flatTerrain = new QgsFlatTerrainGenerator;
flatTerrain->setCrs( map->crs() );
map->setTerrainGenerator( flatTerrain );
QgsOffscreen3DEngine engine;
Qgs3DMapScene *scene = new Qgs3DMapScene( *map, &engine );
engine.setRootEntity( scene );
// look from the top
scene->cameraController()->setLookingAtPoint( QgsVector3D( 0, 0, 0 ), 2500, 0, 0 );
// When running the test on Travis, it would initially return empty rendered image.
// Capturing the initial image and throwing it away fixes that. Hopefully we will
// find a better fix in the future.
Qgs3DUtils::captureSceneImage( engine, scene );
QImage img = Qgs3DUtils::captureSceneImage( engine, scene );
delete scene;
delete map;
delete layerLines;
QGSVERIFYIMAGECHECK( "line_rendering_1", "line_rendering_1", img, QString(), 40, QSize( 0, 0 ), 2 );
}
void TestQgs3DRendering::testLineRenderingDataDefinedColors()
{
const QgsRectangle fullExtent( 0, 0, 1000, 1000 );
QgsVectorLayer *layerLines = new QgsVectorLayer( "LineString?crs=EPSG:27700&field=category:string(20)", "lines", "memory" );
QgsLine3DSymbol *lineSymbol = new QgsLine3DSymbol;
lineSymbol->setRenderAsSimpleLines( true );
lineSymbol->setWidth( 10 );
QgsSimpleLineMaterialSettings matSettings;
matSettings.setAmbient( Qt::red );
QgsPropertyCollection properties;
properties.setProperty( QgsSimpleLineMaterialSettings::Property::Ambient, QgsProperty::fromExpression( QStringLiteral( "case when \"category\" = 'blue' then '#2233cc' when \"category\" = 'green' then '#33ff55' end" ) ) );
matSettings.setDataDefinedProperties( properties );
lineSymbol->setMaterialSettings( matSettings.clone() );
layerLines->setRenderer3D( new QgsVectorLayer3DRenderer( lineSymbol ) );
QVector<QgsPoint> pts;
pts << QgsPoint( 0, 0, 10 ) << QgsPoint( 0, 1000, 10 ) << QgsPoint( 1000, 1000, 10 ) << QgsPoint( 1000, 0, 10 );
QgsFeature f1( layerLines->fields() );
f1.setGeometry( QgsGeometry( new QgsLineString( pts ) ) );
f1.setAttributes( QgsAttributes( {QStringLiteral( "blue" )} ) );
pts.clear();
pts << QgsPoint( 1000, 0, 500 ) << QgsPoint( 1000, 1000, 500 ) << QgsPoint( 0, 1000, 500 ) << QgsPoint( 0, 0, 500 );
QgsFeature f2( layerLines->fields() );
f2.setGeometry( QgsGeometry( new QgsLineString( pts ) ) );
f2.setAttributes( QgsAttributes( {QStringLiteral( "green" )} ) );
QgsFeatureList flist;
flist << f1 << f2;
layerLines->dataProvider()->addFeatures( flist );
Qgs3DMapSettings *map = new Qgs3DMapSettings;
map->setCrs( mProject->crs() );
map->setExtent( fullExtent );
map->setLayers( QList<QgsMapLayer *>() << layerLines );
QgsFlatTerrainGenerator *flatTerrain = new QgsFlatTerrainGenerator;
flatTerrain->setCrs( map->crs() );
map->setTerrainGenerator( flatTerrain );
QgsOffscreen3DEngine engine;
Qgs3DMapScene *scene = new Qgs3DMapScene( *map, &engine );
engine.setRootEntity( scene );
// look from the top
scene->cameraController()->setLookingAtPoint( QgsVector3D( 0, 0, 0 ), 2500, 0, 0 );
// When running the test on Travis, it would initially return empty rendered image.
// Capturing the initial image and throwing it away fixes that. Hopefully we will
// find a better fix in the future.
Qgs3DUtils::captureSceneImage( engine, scene );
QImage img = Qgs3DUtils::captureSceneImage( engine, scene );
QGSVERIFYIMAGECHECK( "line_rendering_data_defined_color", "line_rendering_data_defined_color", img, QString(), 40, QSize( 0, 0 ), 2 );
}
void TestQgs3DRendering::testBufferedLineRendering()
{
const QgsRectangle fullExtent = mLayerDtm->extent();
QgsVectorLayer *layerLines = new QgsVectorLayer( testDataPath( "/3d/lines.shp" ), "lines", "ogr" );
QVERIFY( layerLines->isValid() );
QgsLine3DSymbol *lineSymbol = new QgsLine3DSymbol;
lineSymbol->setWidth( 10 );
lineSymbol->setExtrusionHeight( 30 );
QgsPhongMaterialSettings matSettings;
matSettings.setAmbient( Qt::red );
lineSymbol->setMaterialSettings( matSettings.clone() );
layerLines->setRenderer3D( new QgsVectorLayer3DRenderer( lineSymbol ) );
Qgs3DMapSettings *map = new Qgs3DMapSettings;
map->setCrs( mProject->crs() );
map->setExtent( fullExtent );
map->setLayers( QList<QgsMapLayer *>() << layerLines );
QgsPointLightSettings defaultLight;
defaultLight.setIntensity( 0.5 );
defaultLight.setPosition( QgsVector3D( 0, 1000, 0 ) );
map->setLightSources( { defaultLight.clone() } );
QgsFlatTerrainGenerator *flatTerrain = new QgsFlatTerrainGenerator;
flatTerrain->setCrs( map->crs() );
map->setTerrainGenerator( flatTerrain );
QgsOffscreen3DEngine engine;
Qgs3DMapScene *scene = new Qgs3DMapScene( *map, &engine );
engine.setRootEntity( scene );
scene->cameraController()->setLookingAtPoint( QgsVector3D( 300, 0, 250 ), 500, 45, 0 );
// When running the test on Travis, it would initially return empty rendered image.
// Capturing the initial image and throwing it away fixes that. Hopefully we will
// find a better fix in the future.
Qgs3DUtils::captureSceneImage( engine, scene );
QImage img = Qgs3DUtils::captureSceneImage( engine, scene );
delete scene;
delete map;
delete layerLines;
QGSVERIFYIMAGECHECK( "buffered_lines", "buffered_lines", img, QString(), 40, QSize( 0, 0 ), 2 );
}
void TestQgs3DRendering::testBufferedLineRenderingWidth()
{
const QgsRectangle fullExtent = mLayerDtm->extent();
QgsVectorLayer *layerLines = new QgsVectorLayer( testDataPath( "/3d/lines.shp" ), "lines", "ogr" );
QVERIFY( layerLines->isValid() );
QgsLine3DSymbol *lineSymbol = new QgsLine3DSymbol;
lineSymbol->setWidth( 20 );
lineSymbol->setExtrusionHeight( 30 );
lineSymbol->setOffset( 10 );
QgsPhongMaterialSettings matSettings;
matSettings.setAmbient( Qt::red );
lineSymbol->setMaterialSettings( matSettings.clone() );
layerLines->setRenderer3D( new QgsVectorLayer3DRenderer( lineSymbol ) );
Qgs3DMapSettings *map = new Qgs3DMapSettings;
map->setCrs( mProject->crs() );
map->setExtent( fullExtent );
map->setLayers( QList<QgsMapLayer *>() << layerLines );
QgsPointLightSettings defaultLight;
defaultLight.setIntensity( 0.5 );
defaultLight.setPosition( QgsVector3D( 0, 1000, 0 ) );
map->setLightSources( { defaultLight.clone() } );
QgsFlatTerrainGenerator *flatTerrain = new QgsFlatTerrainGenerator;
flatTerrain->setCrs( map->crs() );
map->setTerrainGenerator( flatTerrain );
QgsOffscreen3DEngine engine;
Qgs3DMapScene *scene = new Qgs3DMapScene( *map, &engine );
engine.setRootEntity( scene );
scene->cameraController()->setLookingAtPoint( QgsVector3D( 300, 0, 250 ), 500, 45, 0 );
// When running the test on Travis, it would initially return empty rendered image.
// Capturing the initial image and throwing it away fixes that. Hopefully we will
// find a better fix in the future.
Qgs3DUtils::captureSceneImage( engine, scene );
QImage img = Qgs3DUtils::captureSceneImage( engine, scene );
delete scene;
delete map;
delete layerLines;
QGSVERIFYIMAGECHECK( "buffered_lines_width", "buffered_lines_width", img, QString(), 40, QSize( 0, 0 ), 2 );
}
void TestQgs3DRendering::testMapTheme()
{
const QgsRectangle fullExtent = mLayerDtm->extent();
Qgs3DMapSettings *map = new Qgs3DMapSettings;
map->setCrs( mProject->crs() );
map->setExtent( fullExtent );
map->setLayers( QList<QgsMapLayer *>() << mLayerDtm );
// set theme - this should override what we set in setLayers()
map->setMapThemeCollection( mProject->mapThemeCollection() );
map->setTerrainMapTheme( "theme_dtm" );
QgsFlatTerrainGenerator *flatTerrain = new QgsFlatTerrainGenerator;
flatTerrain->setCrs( map->crs() );
map->setTerrainGenerator( flatTerrain );
QgsOffscreen3DEngine engine;
Qgs3DMapScene *scene = new Qgs3DMapScene( *map, &engine );
engine.setRootEntity( scene );
// look from the top
scene->cameraController()->setLookingAtPoint( QgsVector3D( 0, 0, 0 ), 2500, 0, 0 );
// When running the test on Travis, it would initially return empty rendered image.
// Capturing the initial image and throwing it away fixes that. Hopefully we will
// find a better fix in the future.
Qgs3DUtils::captureSceneImage( engine, scene );
QImage img = Qgs3DUtils::captureSceneImage( engine, scene );