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qgs3dmapscene.cpp
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/***************************************************************************
qgs3dmapscene.cpp
--------------------------------------
Date : July 2017
Copyright : (C) 2017 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 "qgs3dmapscene.h"
#include <Qt3DRender/QCamera>
#include <Qt3DRender/QMesh>
#include <Qt3DRender/QRenderSettings>
#include <Qt3DRender/QSceneLoader>
#include <Qt3DExtras/QForwardRenderer>
#include <Qt3DExtras/QPhongMaterial>
#include <Qt3DExtras/QPhongAlphaMaterial>
#include <Qt3DExtras/QDiffuseSpecularMaterial>
#include <Qt3DExtras/QSphereMesh>
#include <Qt3DLogic/QFrameAction>
#include <Qt3DRender/QEffect>
#include <Qt3DRender/QTechnique>
#include <Qt3DRender/QRenderPass>
#include <Qt3DRender/QRenderState>
#include <Qt3DRender/QCullFace>
#include <Qt3DRender/QDepthTest>
#include <QSurface>
#include <QUrl>
#include <QtMath>
#include <QOpenGLContext>
#include <QOpenGLFunctions>
#include <QTimer>
#include "qgs3daxis.h"
#include "qgslogger.h"
#include "qgsapplication.h"
#include "qgsaabb.h"
#include "qgsabstract3dengine.h"
#include "qgs3dmapsettings.h"
#include "qgs3dutils.h"
#include "qgsabstract3drenderer.h"
#include "qgscameracontroller.h"
#include "qgschunkedentity_p.h"
#include "qgschunknode_p.h"
#include "qgseventtracing.h"
#include "qgsmeshlayer.h"
#include "qgsmeshlayer3drenderer.h"
#include "qgspoint3dsymbol.h"
#include "qgsrulebased3drenderer.h"
#include "qgspointcloudlayer.h"
#include "qgspointcloudlayer3drenderer.h"
#include "qgssourcecache.h"
#include "qgsterrainentity_p.h"
#include "qgsterraingenerator.h"
#include "qgsdirectionallightsettings.h"
#include "qgsvectorlayer.h"
#include "qgsvectorlayer3drenderer.h"
#include "qgspoint3dbillboardmaterial.h"
#include "qgsmaplayertemporalproperties.h"
#include "qgsmaplayerelevationproperties.h"
#include "qgslinematerial_p.h"
#include "qgs3dsceneexporter.h"
#include "qgs3dmapexportsettings.h"
#include "qgsmessageoutput.h"
#include "qgsskyboxentity.h"
#include "qgsskyboxsettings.h"
#include "qgswindow3dengine.h"
#include "qgspointcloudlayer.h"
std::function< QMap< QString, Qgs3DMapScene * >() > Qgs3DMapScene::sOpenScenesFunction = [] { return QMap< QString, Qgs3DMapScene * >(); };
Qgs3DMapScene::Qgs3DMapScene( Qgs3DMapSettings &map, QgsAbstract3DEngine *engine )
: mMap( map )
, mEngine( engine )
{
connect( &map, &Qgs3DMapSettings::backgroundColorChanged, this, &Qgs3DMapScene::onBackgroundColorChanged );
onBackgroundColorChanged();
// The default render policy in Qt3D is "Always" - i.e. the 3D map scene gets refreshed up to 60 fps
// even if there's no change. Switching to "on demand" should only re-render when something has changed
// and we save quite a lot of resources
mEngine->renderSettings()->setRenderPolicy( Qt3DRender::QRenderSettings::OnDemand );
QRect viewportRect( QPoint( 0, 0 ), mEngine->size() );
// Camera
float aspectRatio = ( float )viewportRect.width() / viewportRect.height();
mEngine->camera()->lens()->setPerspectiveProjection( mMap.fieldOfView(), aspectRatio, 10.f, 10000.0f );
mFrameAction = new Qt3DLogic::QFrameAction();
connect( mFrameAction, &Qt3DLogic::QFrameAction::triggered,
this, &Qgs3DMapScene::onFrameTriggered );
addComponent( mFrameAction ); // takes ownership
// Camera controlling
mCameraController = new QgsCameraController( this ); // attaches to the scene
mCameraController->resetView( 1000 );
addCameraViewCenterEntity( mEngine->camera() );
addCameraRotationCenterEntity( mCameraController );
updateLights();
// create terrain entity
createTerrainDeferred();
connect( &map, &Qgs3DMapSettings::extentChanged, this, &Qgs3DMapScene::createTerrain );
connect( &map, &Qgs3DMapSettings::terrainGeneratorChanged, this, &Qgs3DMapScene::createTerrain );
connect( &map, &Qgs3DMapSettings::terrainVerticalScaleChanged, this, &Qgs3DMapScene::createTerrain );
connect( &map, &Qgs3DMapSettings::mapTileResolutionChanged, this, &Qgs3DMapScene::createTerrain );
connect( &map, &Qgs3DMapSettings::maxTerrainScreenErrorChanged, this, &Qgs3DMapScene::createTerrain );
connect( &map, &Qgs3DMapSettings::maxTerrainGroundErrorChanged, this, &Qgs3DMapScene::createTerrain );
connect( &map, &Qgs3DMapSettings::terrainShadingChanged, this, &Qgs3DMapScene::createTerrain );
connect( &map, &Qgs3DMapSettings::lightSourcesChanged, this, &Qgs3DMapScene::updateLights );
connect( &map, &Qgs3DMapSettings::showLightSourceOriginsChanged, this, &Qgs3DMapScene::updateLights );
connect( &map, &Qgs3DMapSettings::fieldOfViewChanged, this, &Qgs3DMapScene::updateCameraLens );
connect( &map, &Qgs3DMapSettings::projectionTypeChanged, this, &Qgs3DMapScene::updateCameraLens );
connect( &map, &Qgs3DMapSettings::skyboxSettingsChanged, this, &Qgs3DMapScene::onSkyboxSettingsChanged );
connect( &map, &Qgs3DMapSettings::shadowSettingsChanged, this, &Qgs3DMapScene::onShadowSettingsChanged );
connect( &map, &Qgs3DMapSettings::ambientOcclusionSettingsChanged, this, &Qgs3DMapScene::onAmbientOcclusionSettingsChanged );
connect( &map, &Qgs3DMapSettings::eyeDomeLightingEnabledChanged, this, &Qgs3DMapScene::onEyeDomeShadingSettingsChanged );
connect( &map, &Qgs3DMapSettings::eyeDomeLightingStrengthChanged, this, &Qgs3DMapScene::onEyeDomeShadingSettingsChanged );
connect( &map, &Qgs3DMapSettings::eyeDomeLightingDistanceChanged, this, &Qgs3DMapScene::onEyeDomeShadingSettingsChanged );
connect( &map, &Qgs3DMapSettings::debugShadowMapSettingsChanged, this, &Qgs3DMapScene::onDebugShadowMapSettingsChanged );
connect( &map, &Qgs3DMapSettings::debugDepthMapSettingsChanged, this, &Qgs3DMapScene::onDebugDepthMapSettingsChanged );
connect( &map, &Qgs3DMapSettings::fpsCounterEnabledChanged, this, &Qgs3DMapScene::fpsCounterEnabledChanged );
connect( &map, &Qgs3DMapSettings::cameraMovementSpeedChanged, this, &Qgs3DMapScene::onCameraMovementSpeedChanged );
connect( &map, &Qgs3DMapSettings::cameraNavigationModeChanged, this, &Qgs3DMapScene::onCameraNavigationModeChanged );
connect( &map, &Qgs3DMapSettings::debugOverlayEnabledChanged, this, &Qgs3DMapScene::onDebugOverlayEnabledChanged );
connect( &map, &Qgs3DMapSettings::axisSettingsChanged, this, &Qgs3DMapScene::on3DAxisSettingsChanged );
connect( QgsApplication::sourceCache(), &QgsSourceCache::remoteSourceFetched, this, [ = ]( const QString & url )
{
const QList<QgsMapLayer *> modelVectorLayers = mModelVectorLayers;
for ( QgsMapLayer *layer : modelVectorLayers )
{
QgsAbstract3DRenderer *renderer = layer->renderer3D();
if ( renderer )
{
if ( renderer->type() == QLatin1String( "vector" ) )
{
const QgsPoint3DSymbol *pointSymbol = static_cast< const QgsPoint3DSymbol * >( static_cast< QgsVectorLayer3DRenderer *>( renderer )->symbol() );
if ( pointSymbol->shapeProperties()[QStringLiteral( "model" )].toString() == url )
{
removeLayerEntity( layer );
addLayerEntity( layer );
}
}
else if ( renderer->type() == QLatin1String( "rulebased" ) )
{
const QgsRuleBased3DRenderer::RuleList rules = static_cast< QgsRuleBased3DRenderer *>( renderer )->rootRule()->descendants();
for ( auto rule : rules )
{
const QgsPoint3DSymbol *pointSymbol = dynamic_cast< const QgsPoint3DSymbol * >( rule->symbol() );
if ( pointSymbol->shapeProperties()[QStringLiteral( "model" )].toString() == url )
{
removeLayerEntity( layer );
addLayerEntity( layer );
break;
}
}
}
}
}
} );
// listen to changes of layers in order to add/remove 3D renderer entities
connect( &map, &Qgs3DMapSettings::layersChanged, this, &Qgs3DMapScene::onLayersChanged );
connect( mCameraController, &QgsCameraController::cameraChanged, this, &Qgs3DMapScene::onCameraChanged );
connect( mEngine, &QgsAbstract3DEngine::sizeChanged, this, &Qgs3DMapScene::onCameraChanged );
onSkyboxSettingsChanged();
// force initial update of chunked entities
onCameraChanged();
// force initial update of eye dome shading
onEyeDomeShadingSettingsChanged();
// force initial update of debugging setting of preview quads
onDebugShadowMapSettingsChanged();
onDebugDepthMapSettingsChanged();
// force initial update of ambient occlusion settings
onAmbientOcclusionSettingsChanged();
mCameraController->setCameraNavigationMode( mMap.cameraNavigationMode() );
onCameraMovementSpeedChanged();
on3DAxisSettingsChanged();
}
void Qgs3DMapScene::viewZoomFull()
{
const QgsDoubleRange yRange = elevationRange();
const QgsRectangle extent = sceneExtent();
const double side = std::max( extent.width(), extent.height() );
double d = side / 2 / std::tan( cameraController()->camera()->fieldOfView() / 2 * M_PI / 180 );
d += yRange.isInfinite() ? 0. : yRange.upper();
mCameraController->resetView( static_cast< float >( d ) );
return;
}
void Qgs3DMapScene::setViewFrom2DExtent( const QgsRectangle &extent )
{
QgsPointXY center = extent.center();
QgsVector3D centerWorld = mMap.mapToWorldCoordinates( QVector3D( center.x(), center.y(), 0 ) );
QgsVector3D p1 = mMap.mapToWorldCoordinates( QVector3D( extent.xMinimum(), extent.yMinimum(), 0 ) );
QgsVector3D p2 = mMap.mapToWorldCoordinates( QVector3D( extent.xMaximum(), extent.yMaximum(), 0 ) );
float xSide = std::abs( p1.x() - p2.x() );
float ySide = std::abs( p1.z() - p2.z() );
if ( xSide < ySide )
{
float fov = 2 * std::atan( std::tan( qDegreesToRadians( cameraController()->camera()->fieldOfView() ) / 2 ) * cameraController()->camera()->aspectRatio() );
float r = xSide / 2.0f / std::tan( fov / 2.0f );
mCameraController->setViewFromTop( centerWorld.x(), centerWorld.z(), r );
}
else
{
float fov = qDegreesToRadians( cameraController()->camera()->fieldOfView() );
float r = ySide / 2.0f / std::tan( fov / 2.0f );
mCameraController->setViewFromTop( centerWorld.x(), centerWorld.z(), r );
}
}
QVector<QgsPointXY> Qgs3DMapScene::viewFrustum2DExtent()
{
Qt3DRender::QCamera *camera = mCameraController->camera();
QVector<QgsPointXY> extent;
QVector<int> pointsOrder = { 0, 1, 3, 2 };
for ( int i : pointsOrder )
{
const QPoint p( ( ( i >> 0 ) & 1 ) ? 0 : mEngine->size().width(), ( ( i >> 1 ) & 1 ) ? 0 : mEngine->size().height() );
QgsRay3D ray = Qgs3DUtils::rayFromScreenPoint( p, mEngine->size(), camera );
QVector3D dir = ray.direction();
if ( dir.y() == 0.0 )
dir.setY( 0.000001 );
double t = - ray.origin().y() / dir.y();
if ( t < 0 )
{
// If the projected point is on the back of the camera we choose the farthest point in the front
t = camera->farPlane();
}
else
{
// If the projected point is on the front of the camera we choose the closest between it and farthest point in the front
t = std::min<float>( t, camera->farPlane() );
}
QVector3D planePoint = ray.origin() + t * dir;
QgsVector3D pMap = mMap.worldToMapCoordinates( planePoint );
extent.push_back( QgsPointXY( pMap.x(), pMap.y() ) );
}
return extent;
}
int Qgs3DMapScene::terrainPendingJobsCount() const
{
return mTerrain ? mTerrain->pendingJobsCount() : 0;
}
int Qgs3DMapScene::totalPendingJobsCount() const
{
int count = 0;
for ( Qgs3DMapSceneEntity *entity : std::as_const( mSceneEntities ) )
count += entity->pendingJobsCount();
return count;
}
float Qgs3DMapScene::worldSpaceError( float epsilon, float distance )
{
Qt3DRender::QCamera *camera = mCameraController->camera();
float fov = camera->fieldOfView();
const QSize size = mEngine->size();
float screenSizePx = std::max( size.width(), size.height() ); // TODO: is this correct?
// see Qgs3DUtils::screenSpaceError() for the inverse calculation (world space error to screen space error)
// with explanation of the math.
float frustumWidthAtDistance = 2 * distance * tan( fov / 2 );
float err = frustumWidthAtDistance * epsilon / screenSizePx;
return err;
}
Qgs3DMapSceneEntity::SceneState sceneState_( QgsAbstract3DEngine *engine )
{
Qt3DRender::QCamera *camera = engine->camera();
Qgs3DMapSceneEntity::SceneState state;
state.cameraFov = camera->fieldOfView();
state.cameraPos = camera->position();
const QSize size = engine->size();
state.screenSizePx = std::max( size.width(), size.height() ); // TODO: is this correct?
state.viewProjectionMatrix = camera->projectionMatrix() * camera->viewMatrix();
return state;
}
void Qgs3DMapScene::onCameraChanged()
{
if ( mMap.projectionType() == Qt3DRender::QCameraLens::OrthographicProjection )
{
QRect viewportRect( QPoint( 0, 0 ), mEngine->size() );
const float viewWidthFromCenter = mCameraController->distance();
const float viewHeightFromCenter = viewportRect.height() * viewWidthFromCenter / viewportRect.width();
mEngine->camera()->lens()->setOrthographicProjection( -viewWidthFromCenter, viewWidthFromCenter, -viewHeightFromCenter, viewHeightFromCenter, mEngine->camera()->nearPlane(), mEngine->camera()->farPlane() );
}
updateScene();
bool changedCameraPlanes = updateCameraNearFarPlanes();
if ( changedCameraPlanes )
{
// repeat update of entities - because we have updated camera's near/far planes,
// the active nodes may have changed as well
updateScene();
updateCameraNearFarPlanes();
}
onShadowSettingsChanged();
QVector<QgsPointXY> extent2D = viewFrustum2DExtent();
emit viewed2DExtentFrom3DChanged( extent2D );
}
void removeQLayerComponentsFromHierarchy( Qt3DCore::QEntity *entity )
{
QVector<Qt3DCore::QComponent *> toBeRemovedComponents;
for ( Qt3DCore::QComponent *component : entity->components() )
{
Qt3DRender::QLayer *layer = qobject_cast<Qt3DRender::QLayer *>( component );
if ( layer != nullptr )
toBeRemovedComponents.push_back( layer );
}
for ( Qt3DCore::QComponent *component : toBeRemovedComponents )
entity->removeComponent( component );
for ( Qt3DCore::QEntity *obj : entity->findChildren<Qt3DCore::QEntity *>() )
{
if ( obj != nullptr )
removeQLayerComponentsFromHierarchy( obj );
}
}
void addQLayerComponentsToHierarchy( Qt3DCore::QEntity *entity, const QVector<Qt3DRender::QLayer *> &layers )
{
for ( Qt3DRender::QLayer *layer : layers )
entity->addComponent( layer );
for ( Qt3DCore::QEntity *child : entity->findChildren<Qt3DCore::QEntity *>() )
{
if ( child != nullptr )
addQLayerComponentsToHierarchy( child, layers );
}
}
void Qgs3DMapScene::updateScene()
{
QgsEventTracing::addEvent( QgsEventTracing::Instant, QStringLiteral( "3D" ), QStringLiteral( "Update Scene" ) );
for ( Qgs3DMapSceneEntity *entity : std::as_const( mSceneEntities ) )
{
entity->handleSceneUpdate( sceneState_( mEngine ) );
}
updateSceneState();
}
bool Qgs3DMapScene::updateCameraNearFarPlanes()
{
// Update near and far plane from the terrain.
// this needs to be done with great care as we have kind of circular dependency here:
// active nodes are culled based on the current frustum (which involves near + far plane)
// and then based on active nodes we set near and far plane.
//
// All of this is just heuristics assuming that all other stuff is being rendered somewhere
// around the area where the terrain is.
//
// Near/far plane is setup in order to make best use of the depth buffer to avoid:
// 1. precision errors - if the range is too great
// 2. unwanted clipping of scene - if the range is too small
Qt3DRender::QCamera *camera = cameraController()->camera();
QMatrix4x4 viewMatrix = camera->viewMatrix();
float fnear = 1e9;
float ffar = 0;
// Iterate all scene entities to make sure that they will not get
// clipped by the near or far plane
for ( Qgs3DMapSceneEntity *se : std::as_const( mSceneEntities ) )
{
const QgsRange<float> depthRange = se->getNearFarPlaneRange( viewMatrix );
fnear = std::min( fnear, depthRange.lower() );
ffar = std::max( ffar, depthRange.upper() );
}
if ( fnear < 1 )
fnear = 1; // does not really make sense to use negative far plane (behind camera)
// when zooming in a lot, fnear can become smaller than ffar. This should not happen
if ( fnear > ffar )
std::swap( fnear, ffar );
if ( fnear == 1e9 && ffar == 0 )
{
// the update didn't work out... this should not happen
// well at least temporarily use some conservative starting values
qWarning() << "oops... this should not happen! couldn't determine near/far plane. defaulting to 1...1e9";
fnear = 1;
ffar = 1e9;
}
// set near/far plane - with some tolerance in front/behind expected near/far planes
float newFar = ffar * 2;
float newNear = fnear / 2;
if ( !qgsFloatNear( newFar, camera->farPlane() ) || !qgsFloatNear( newNear, camera->nearPlane() ) )
{
camera->setFarPlane( newFar );
camera->setNearPlane( newNear );
return true;
}
return false;
}
void Qgs3DMapScene::onFrameTriggered( float dt )
{
mCameraController->frameTriggered( dt );
for ( Qgs3DMapSceneEntity *entity : std::as_const( mSceneEntities ) )
{
if ( entity->isEnabled() && entity->needsUpdate() )
{
QgsDebugMsgLevel( QStringLiteral( "need for update" ), 2 );
entity->handleSceneUpdate( sceneState_( mEngine ) );
}
}
updateSceneState();
// lock changing the FPS counter to 5 fps
static int frameCount = 0;
static float accumulatedTime = 0.0f;
if ( !mMap.isFpsCounterEnabled() )
{
frameCount = 0;
accumulatedTime = 0;
return;
}
frameCount++;
accumulatedTime += dt;
if ( accumulatedTime >= 0.2f )
{
float fps = ( float )frameCount / accumulatedTime;
frameCount = 0;
accumulatedTime = 0.0f;
emit fpsCountChanged( fps );
}
}
void Qgs3DMapScene::createTerrain()
{
if ( mTerrain )
{
mSceneEntities.removeOne( mTerrain );
mTerrain->deleteLater();
mTerrain = nullptr;
}
if ( !mTerrainUpdateScheduled )
{
// defer re-creation of terrain: there may be multiple invocations of this slot, so create the new entity just once
QTimer::singleShot( 0, this, &Qgs3DMapScene::createTerrainDeferred );
mTerrainUpdateScheduled = true;
setSceneState( Updating );
}
else
{
emit terrainEntityChanged();
}
}
void Qgs3DMapScene::createTerrainDeferred()
{
if ( mMap.terrainRenderingEnabled() && mMap.terrainGenerator() )
{
double tile0width = mMap.terrainGenerator()->rootChunkExtent().width();
int maxZoomLevel = Qgs3DUtils::maxZoomLevel( tile0width, mMap.mapTileResolution(), mMap.maxTerrainGroundError() );
QgsAABB rootBbox = mMap.terrainGenerator()->rootChunkBbox( mMap );
float rootError = mMap.terrainGenerator()->rootChunkError( mMap );
const QgsAABB clippingBbox = Qgs3DUtils::mapToWorldExtent( mMap.extent(), rootBbox.zMin, rootBbox.zMax, mMap.origin() );
mMap.terrainGenerator()->setupQuadtree( rootBbox, rootError, maxZoomLevel, clippingBbox );
mTerrain = new QgsTerrainEntity( mMap );
mTerrain->setParent( this );
mTerrain->setShowBoundingBoxes( mMap.showTerrainBoundingBoxes() );
mSceneEntities << mTerrain;
connect( mTerrain, &QgsChunkedEntity::pendingJobsCountChanged, this, &Qgs3DMapScene::totalPendingJobsCountChanged );
connect( mTerrain, &QgsTerrainEntity::pendingJobsCountChanged, this, &Qgs3DMapScene::terrainPendingJobsCountChanged );
}
else
{
mTerrain = nullptr;
}
// make sure that renderers for layers are re-created as well
const QList<QgsMapLayer *> layers = mMap.layers();
for ( QgsMapLayer *layer : layers )
{
// remove old entity - if any
removeLayerEntity( layer );
// add new entity - if any 3D renderer
addLayerEntity( layer );
}
emit terrainEntityChanged();
onCameraChanged(); // force update of the new terrain
mTerrainUpdateScheduled = false;
}
void Qgs3DMapScene::onBackgroundColorChanged()
{
mEngine->setClearColor( mMap.backgroundColor() );
}
void Qgs3DMapScene::updateLights()
{
for ( Qt3DCore::QEntity *entity : std::as_const( mLightEntities ) )
entity->deleteLater();
mLightEntities.clear();
const QList< QgsLightSource * > newLights = mMap.lightSources();
for ( const QgsLightSource *source : newLights )
{
mLightEntities.append( source->createEntity( mMap, this ) );
}
onShadowSettingsChanged();
}
void Qgs3DMapScene::updateCameraLens()
{
mEngine->camera()->lens()->setFieldOfView( mMap.fieldOfView() );
mEngine->camera()->lens()->setProjectionType( mMap.projectionType() );
onCameraChanged();
}
void Qgs3DMapScene::onLayerRenderer3DChanged()
{
QgsMapLayer *layer = qobject_cast<QgsMapLayer *>( sender() );
Q_ASSERT( layer );
// remove old entity - if any
removeLayerEntity( layer );
// add new entity - if any 3D renderer
addLayerEntity( layer );
}
void Qgs3DMapScene::onLayersChanged()
{
QSet<QgsMapLayer *> layersBefore = qgis::listToSet( mLayerEntities.keys() );
QList<QgsMapLayer *> layersAdded;
const QList<QgsMapLayer *> layers = mMap.layers();
for ( QgsMapLayer *layer : layers )
{
if ( !layersBefore.contains( layer ) )
{
layersAdded << layer;
}
else
{
layersBefore.remove( layer );
}
}
// what is left in layersBefore are layers that have been removed
for ( QgsMapLayer *layer : std::as_const( layersBefore ) )
{
removeLayerEntity( layer );
}
for ( QgsMapLayer *layer : std::as_const( layersAdded ) )
{
addLayerEntity( layer );
}
}
void Qgs3DMapScene::updateTemporal()
{
const QList<QgsMapLayer * > layers = mLayerEntities.keys();
for ( QgsMapLayer *layer : layers )
{
if ( layer->temporalProperties()->isActive() )
{
removeLayerEntity( layer );
addLayerEntity( layer );
}
}
}
void Qgs3DMapScene::addLayerEntity( QgsMapLayer *layer )
{
bool needsSceneUpdate = false;
QgsAbstract3DRenderer *renderer = layer->renderer3D();
if ( renderer )
{
// Fix vector layer's renderer to make sure the renderer is pointing to its layer.
// It has happened before that renderer pointed to a different layer (probably after copying a style).
// This is a bit of a hack and it should be handled in QgsMapLayer::setRenderer3D() but in qgis_core
// the vector layer 3D renderer classes are not available.
if ( layer->type() == Qgis::LayerType::Vector &&
( renderer->type() == QLatin1String( "vector" ) || renderer->type() == QLatin1String( "rulebased" ) ) )
{
static_cast<QgsAbstractVectorLayer3DRenderer *>( renderer )->setLayer( static_cast<QgsVectorLayer *>( layer ) );
if ( renderer->type() == QLatin1String( "vector" ) )
{
QgsVectorLayer *vlayer = qobject_cast<QgsVectorLayer *>( layer );
if ( vlayer->geometryType() == Qgis::GeometryType::Point )
{
const QgsPoint3DSymbol *pointSymbol = static_cast< const QgsPoint3DSymbol * >( static_cast< QgsVectorLayer3DRenderer *>( renderer )->symbol() );
if ( pointSymbol->shape() == QgsPoint3DSymbol::Model )
{
mModelVectorLayers.append( layer );
}
}
}
else if ( renderer->type() == QLatin1String( "rulebased" ) )
{
const QgsRuleBased3DRenderer::RuleList rules = static_cast< QgsRuleBased3DRenderer *>( renderer )->rootRule()->descendants();
for ( auto rule : rules )
{
const QgsPoint3DSymbol *pointSymbol = dynamic_cast< const QgsPoint3DSymbol * >( rule->symbol() );
if ( pointSymbol && pointSymbol->shape() == QgsPoint3DSymbol::Model )
{
mModelVectorLayers.append( layer );
break;
}
}
}
}
else if ( layer->type() == Qgis::LayerType::Mesh && renderer->type() == QLatin1String( "mesh" ) )
{
QgsMeshLayer3DRenderer *meshRenderer = static_cast<QgsMeshLayer3DRenderer *>( renderer );
meshRenderer->setLayer( static_cast<QgsMeshLayer *>( layer ) );
// Before entity creation, set the maximum texture size
// Not very clean, but for now, only place found in the workflow to do that simple
QgsMesh3DSymbol *sym = meshRenderer->symbol()->clone();
sym->setMaximumTextureSize( maximumTextureSize() );
meshRenderer->setSymbol( sym );
}
else if ( layer->type() == Qgis::LayerType::PointCloud && renderer->type() == QLatin1String( "pointcloud" ) )
{
QgsPointCloudLayer3DRenderer *pointCloudRenderer = static_cast<QgsPointCloudLayer3DRenderer *>( renderer );
pointCloudRenderer->setLayer( static_cast<QgsPointCloudLayer *>( layer ) );
}
Qt3DCore::QEntity *newEntity = renderer->createEntity( mMap );
if ( newEntity )
{
newEntity->setParent( this );
mLayerEntities.insert( layer, newEntity );
finalizeNewEntity( newEntity );
if ( Qgs3DMapSceneEntity *sceneNewEntity = qobject_cast<Qgs3DMapSceneEntity *>( newEntity ) )
{
needsSceneUpdate = true;
mSceneEntities.append( sceneNewEntity );
connect( sceneNewEntity, &Qgs3DMapSceneEntity::newEntityCreated, this, [this]( Qt3DCore::QEntity * entity )
{
finalizeNewEntity( entity );
} );
connect( sceneNewEntity, &Qgs3DMapSceneEntity::pendingJobsCountChanged, this, &Qgs3DMapScene::totalPendingJobsCountChanged );
}
}
}
if ( needsSceneUpdate )
onCameraChanged(); // needed for chunked entities
connect( layer, &QgsMapLayer::request3DUpdate, this, &Qgs3DMapScene::onLayerRenderer3DChanged );
if ( layer->type() == Qgis::LayerType::Vector )
{
QgsVectorLayer *vlayer = qobject_cast<QgsVectorLayer *>( layer );
connect( vlayer, &QgsVectorLayer::selectionChanged, this, &Qgs3DMapScene::onLayerRenderer3DChanged );
connect( vlayer, &QgsVectorLayer::layerModified, this, &Qgs3DMapScene::onLayerRenderer3DChanged );
}
if ( layer->type() == Qgis::LayerType::Mesh )
{
connect( layer, &QgsMapLayer::rendererChanged, this, &Qgs3DMapScene::onLayerRenderer3DChanged );
}
if ( layer->type() == Qgis::LayerType::PointCloud )
{
QgsPointCloudLayer *pclayer = qobject_cast<QgsPointCloudLayer *>( layer );
connect( pclayer, &QgsPointCloudLayer::renderer3DChanged, this, &Qgs3DMapScene::onLayerRenderer3DChanged );
connect( pclayer, &QgsPointCloudLayer::subsetStringChanged, this, &Qgs3DMapScene::onLayerRenderer3DChanged );
}
}
void Qgs3DMapScene::removeLayerEntity( QgsMapLayer *layer )
{
Qt3DCore::QEntity *entity = mLayerEntities.take( layer );
if ( Qgs3DMapSceneEntity *sceneEntity = qobject_cast<Qgs3DMapSceneEntity *>( entity ) )
{
mSceneEntities.removeOne( sceneEntity );
}
if ( entity )
entity->deleteLater();
disconnect( layer, &QgsMapLayer::request3DUpdate, this, &Qgs3DMapScene::onLayerRenderer3DChanged );
if ( layer->type() == Qgis::LayerType::Vector )
{
QgsVectorLayer *vlayer = qobject_cast<QgsVectorLayer *>( layer );
disconnect( vlayer, &QgsVectorLayer::selectionChanged, this, &Qgs3DMapScene::onLayerRenderer3DChanged );
disconnect( vlayer, &QgsVectorLayer::layerModified, this, &Qgs3DMapScene::onLayerRenderer3DChanged );
mModelVectorLayers.removeAll( layer );
}
if ( layer->type() == Qgis::LayerType::Mesh )
{
disconnect( layer, &QgsMapLayer::rendererChanged, this, &Qgs3DMapScene::onLayerRenderer3DChanged );
}
if ( layer->type() == Qgis::LayerType::PointCloud )
{
QgsPointCloudLayer *pclayer = qobject_cast<QgsPointCloudLayer *>( layer );
disconnect( pclayer, &QgsPointCloudLayer::renderer3DChanged, this, &Qgs3DMapScene::onLayerRenderer3DChanged );
disconnect( pclayer, &QgsPointCloudLayer::subsetStringChanged, this, &Qgs3DMapScene::onLayerRenderer3DChanged );
}
}
void Qgs3DMapScene::finalizeNewEntity( Qt3DCore::QEntity *newEntity )
{
// this is probably not the best place for material-specific configuration,
// maybe this could be more generalized when other materials need some specific treatment
for ( QgsLineMaterial *lm : newEntity->findChildren<QgsLineMaterial *>() )
{
connect( mEngine, &QgsAbstract3DEngine::sizeChanged, lm, [lm, this]
{
lm->setViewportSize( mEngine->size() );
} );
lm->setViewportSize( mEngine->size() );
}
// configure billboard's viewport when the viewport is changed.
for ( QgsPoint3DBillboardMaterial *bm : newEntity->findChildren<QgsPoint3DBillboardMaterial *>() )
{
connect( mEngine, &QgsAbstract3DEngine::sizeChanged, bm, [bm, this]
{
bm->setViewportSize( mEngine->size() );
} );
bm->setViewportSize( mEngine->size() );
}
// Finalize adding the 3D transparent objects by adding the layer components to the entities
QgsShadowRenderingFrameGraph *frameGraph = mEngine->frameGraph();
Qt3DRender::QLayer *transparentLayer = frameGraph->transparentObjectLayer();
for ( Qt3DRender::QMaterial *material : newEntity->findChildren<Qt3DRender::QMaterial *>() )
{
// This handles the phong material without data defined properties.
if ( Qt3DExtras::QDiffuseSpecularMaterial *ph = qobject_cast<Qt3DExtras::QDiffuseSpecularMaterial *>( material ) )
{
if ( ph->diffuse().value<QColor>().alphaF() != 1.0f )
{
Qt3DCore::QEntity *entity = qobject_cast<Qt3DCore::QEntity *>( ph->parent() );
if ( entity && !entity->components().contains( transparentLayer ) )
{
entity->addComponent( transparentLayer );
}
}
}
else
{
// This handles the phong material with data defined properties, the textured case and point (instanced) symbols.
Qt3DRender::QEffect *effect = material->effect();
if ( effect )
{
for ( const auto *parameter : effect->parameters() )
{
if ( parameter->name() == "opacity" && parameter->value() != 1.0f )
{
Qt3DCore::QEntity *entity = qobject_cast<Qt3DCore::QEntity *>( material->parent() );
if ( entity && !entity->components().contains( transparentLayer ) )
{
entity->addComponent( transparentLayer );
}
break;
}
}
}
}
}
}
int Qgs3DMapScene::maximumTextureSize() const
{
QSurface *surface = mEngine->surface();
QOpenGLContext context;
context.create();
bool success = context.makeCurrent( surface );
if ( success )
{
QOpenGLFunctions openglFunctions = QOpenGLFunctions( &context );
GLint size;
openglFunctions.initializeOpenGLFunctions();
openglFunctions.glGetIntegerv( GL_MAX_TEXTURE_SIZE, &size );
return int( size );
}
else
{
return 4096; //we can't have a context to defined the max texture size, we use this reasonable value
}
}
void Qgs3DMapScene::addCameraViewCenterEntity( Qt3DRender::QCamera *camera )
{
mEntityCameraViewCenter = new Qt3DCore::QEntity;
Qt3DCore::QTransform *trCameraViewCenter = new Qt3DCore::QTransform;
mEntityCameraViewCenter->addComponent( trCameraViewCenter );
connect( camera, &Qt3DRender::QCamera::viewCenterChanged, this, [trCameraViewCenter, camera]
{
trCameraViewCenter->setTranslation( camera->viewCenter() );
} );
Qt3DExtras::QPhongMaterial *materialCameraViewCenter = new Qt3DExtras::QPhongMaterial;
materialCameraViewCenter->setAmbient( Qt::red );
mEntityCameraViewCenter->addComponent( materialCameraViewCenter );
Qt3DExtras::QSphereMesh *rendererCameraViewCenter = new Qt3DExtras::QSphereMesh;
rendererCameraViewCenter->setRadius( 10 );
mEntityCameraViewCenter->addComponent( rendererCameraViewCenter );
mEntityCameraViewCenter->setEnabled( mMap.showCameraViewCenter() );
mEntityCameraViewCenter->setParent( this );
connect( &mMap, &Qgs3DMapSettings::showCameraViewCenterChanged, this, [this]
{
mEntityCameraViewCenter->setEnabled( mMap.showCameraViewCenter() );
} );
}
void Qgs3DMapScene::setSceneState( Qgs3DMapScene::SceneState state )
{
if ( mSceneState == state )
return;
mSceneState = state;
emit sceneStateChanged();
}
void Qgs3DMapScene::updateSceneState()
{
if ( mTerrainUpdateScheduled )
{
setSceneState( Updating );
return;
}
for ( Qgs3DMapSceneEntity *entity : std::as_const( mSceneEntities ) )
{
if ( entity->isEnabled() && entity->pendingJobsCount() > 0 )
{
setSceneState( Updating );
return;
}
}
setSceneState( Ready );
}
void Qgs3DMapScene::onSkyboxSettingsChanged()
{
QgsSkyboxSettings skyboxSettings = mMap.skyboxSettings();
if ( mSkybox != nullptr )
{
mSkybox->deleteLater();
mSkybox = nullptr;
}
mEngine->setFrustumCullingEnabled( !mMap.isSkyboxEnabled() );
if ( mMap.isSkyboxEnabled() )
{
QMap<QString, QString> faces;
switch ( skyboxSettings.skyboxType() )
{
case QgsSkyboxEntity::DistinctTexturesSkybox:
faces = skyboxSettings.cubeMapFacesPaths();
mSkybox = new QgsCubeFacesSkyboxEntity(
faces[QStringLiteral( "posX" )], faces[QStringLiteral( "posY" )], faces[QStringLiteral( "posZ" )],
faces[QStringLiteral( "negX" )], faces[QStringLiteral( "negY" )], faces[QStringLiteral( "negZ" )],
this
);
break;
case QgsSkyboxEntity::PanoramicSkybox:
mSkybox = new QgsPanoramicSkyboxEntity( skyboxSettings.panoramicTexturePath(), this );
break;
}
}
}
void Qgs3DMapScene::onShadowSettingsChanged()
{
QgsShadowRenderingFrameGraph *shadowRenderingFrameGraph = mEngine->frameGraph();
const QList< QgsLightSource * > lightSources = mMap.lightSources();
QList< QgsDirectionalLightSettings * > directionalLightSources;
for ( QgsLightSource *source : lightSources )
{
if ( source->type() == Qgis::LightSourceType::Directional )
{
directionalLightSources << qgis::down_cast< QgsDirectionalLightSettings * >( source );
}
}
QgsShadowSettings shadowSettings = mMap.shadowSettings();
int selectedLight = shadowSettings.selectedDirectionalLight();
if ( shadowSettings.renderShadows() && selectedLight >= 0 && selectedLight < directionalLightSources.count() )
{
shadowRenderingFrameGraph->setShadowRenderingEnabled( true );
shadowRenderingFrameGraph->setShadowBias( shadowSettings.shadowBias() );
shadowRenderingFrameGraph->setShadowMapResolution( shadowSettings.shadowMapResolution() );
QgsDirectionalLightSettings light = *directionalLightSources.at( selectedLight );
shadowRenderingFrameGraph->setupDirectionalLight( light, shadowSettings.maximumShadowRenderingDistance() );
}
else
shadowRenderingFrameGraph->setShadowRenderingEnabled( false );
}
void Qgs3DMapScene::onAmbientOcclusionSettingsChanged()
{
QgsShadowRenderingFrameGraph *shadowRenderingFrameGraph = mEngine->frameGraph();
QgsAmbientOcclusionSettings ambientOcclusionSettings = mMap.ambientOcclusionSettings();
shadowRenderingFrameGraph->setAmbientOcclusionEnabled( ambientOcclusionSettings.isEnabled() );
shadowRenderingFrameGraph->setAmbientOcclusionRadius( ambientOcclusionSettings.radius() );
shadowRenderingFrameGraph->setAmbientOcclusionIntensity( ambientOcclusionSettings.intensity() );
shadowRenderingFrameGraph->setAmbientOcclusionThreshold( ambientOcclusionSettings.threshold() );
}
void Qgs3DMapScene::onDebugShadowMapSettingsChanged()
{
QgsShadowRenderingFrameGraph *shadowRenderingFrameGraph = mEngine->frameGraph();
shadowRenderingFrameGraph->setupShadowMapDebugging( mMap.debugShadowMapEnabled(), mMap.debugShadowMapCorner(), mMap.debugShadowMapSize() );
}
void Qgs3DMapScene::onDebugDepthMapSettingsChanged()
{
QgsShadowRenderingFrameGraph *shadowRenderingFrameGraph = mEngine->frameGraph();
shadowRenderingFrameGraph->setupDepthMapDebugging( mMap.debugDepthMapEnabled(), mMap.debugDepthMapCorner(), mMap.debugDepthMapSize() );
}
void Qgs3DMapScene::onDebugOverlayEnabledChanged()
{
QgsShadowRenderingFrameGraph *shadowRenderingFrameGraph = mEngine->frameGraph();
shadowRenderingFrameGraph->setDebugOverlayEnabled( mMap.isDebugOverlayEnabled() );
}
void Qgs3DMapScene::onEyeDomeShadingSettingsChanged()
{
QgsShadowRenderingFrameGraph *shadowRenderingFrameGraph = mEngine->frameGraph();
bool edlEnabled = mMap.eyeDomeLightingEnabled();
double edlStrength = mMap.eyeDomeLightingStrength();
double edlDistance = mMap.eyeDomeLightingDistance();
shadowRenderingFrameGraph->setupEyeDomeLighting( edlEnabled, edlStrength, edlDistance );
}
void Qgs3DMapScene::onCameraMovementSpeedChanged()
{
mCameraController->setCameraMovementSpeed( mMap.cameraMovementSpeed() );
}
void Qgs3DMapScene::onCameraNavigationModeChanged()
{
mCameraController->setCameraNavigationMode( mMap.cameraNavigationMode() );