GUI for configuration of 3D polygon symbols for vector layers

In the style dock there is a new "3D View" tab - so far working just for polygon layers.
It is possible to select a polygon layer, enable 3D renderer and adjust its properties.
If a 3D Map View is open, it will be immediately updated (if auto-apply is enabled)

Very exciting! :-)

Author: wonder-sk

CMakeLists.txt

@@ -284,6 +284,7 @@ IF(WITH_CORE)
     FIND_PACKAGE(Qt53DInput REQUIRED)
     FIND_PACKAGE(Qt53DLogic REQUIRED)
     FIND_PACKAGE(Qt53DExtras REQUIRED)
+    SET(HAVE_3D TRUE)  # used in qgsconfig.h
   ENDIF (WITH_3D)
   INCLUDE("cmake/modules/ECMQt4To5Porting.cmake")
   MESSAGE(STATUS "Found Qt version: ${Qt5Core_VERSION_STRING}")

cmake_templates/qgsconfig.h.in

@@ -13,7 +13,7 @@
 //used in vim src/core/qgis.cpp
 //The way below should work but it resolves to a number like 0110 which the compiler treats as octal I think
 //because debuggin it out shows the decimal number 72 which results in incorrect version status.
-//As a short term fix I (Tim) am defining the version in top level cmake. It would be good to 
+//As a short term fix I (Tim) am defining the version in top level cmake. It would be good to
 //reinstate this more generic approach below at some point though
 //#define VERSION_INT ${CPACK_PACKAGE_VERSION_MAJOR}${CPACK_PACKAGE_VERSION_MINOR}${CPACK_PACKAGE_VERSION_PATCH}
 #define VERSION_INT ${QGIS_VERSION_INT}
@@ -58,5 +58,7 @@
 
 #cmakedefine ENABLE_MODELTEST
 
+#cmakedefine HAVE_3D
+
 #endif
 

images/images.qrc

@@ -570,6 +570,7 @@
         <file>themes/default/mGeoPackage.svg</file>
         <file>themes/default/mActionAddGeoPackageLayer.svg</file>
         <file>icons/qgis_icon.svg</file>
+        <file>themes/default/3d.svg</file>
     </qresource>
     <qresource prefix="/images/tips">
         <file alias="symbol_levels.png">qgis_tips/symbol_levels.png</file>

images/themes/default/3d.svg

@@ -704,6 +704,7 @@ Returns path to the build output directory. Valid only when running from build d
  :rtype: QgsFieldFormatterRegistry
 %End
 
+
     static QString nullRepresentation();
 %Docstring
  This string is used to represent the value `NULL` throughout QGIS.

python/core/qgsapplication.sip

@@ -754,6 +754,8 @@ Return pointer to layer's undo stack
  :rtype: QgsMapLayerStyleManager
 %End
 
+
+
     bool isInScaleRange( double scale ) const;
 %Docstring
  Tests whether the layer should be visible at the specified ``scale``.
@@ -1014,6 +1016,12 @@ Signal emitted when the blend mode is changed, through QgsMapLayer.setBlendMode(
 %Docstring
  Signal emitted when legend of the layer has changed
 .. versionadded:: 2.6
+%End
+
+    void renderer3DChanged();
+%Docstring
+ Signal emitted when 3D renderer associated with the layer has changed.
+.. versionadded:: 3.0
 %End
 
     void configChanged();

python/core/qgsmaplayer.sip

@@ -2,7 +2,6 @@
 # sources
 
 SET(QGIS_3D_SRCS
-  abstract3drenderer.cpp
   abstract3dsymbol.cpp
   cameracontroller.cpp
   lineentity.cpp
@@ -15,6 +14,7 @@ SET(QGIS_3D_SRCS
   tessellator.cpp
   tilingscheme.cpp
   utils.cpp
+  vectorlayer3drenderer.cpp
 
   chunks/chunkboundsentity.cpp
   chunks/chunkedentity.cpp
@@ -63,7 +63,6 @@ QT5_ADD_RESOURCES(QGIS_3D_RCC_SRCS shaders.qrc)
 
 SET(QGIS_3D_HDRS
   aabb.h
-  abstract3drenderer.h
   abstract3dsymbol.h
   cameracontroller.h
   lineentity.h
@@ -76,6 +75,7 @@ SET(QGIS_3D_HDRS
   tessellator.h
   tilingscheme.h
   utils.h
+  vectorlayer3drenderer.h
 
   chunks/chunkboundsentity.h
   chunks/chunkedentity.h
@@ -105,6 +105,7 @@ INCLUDE_DIRECTORIES(
   ${CMAKE_SOURCE_DIR}/src/core/symbology-ng
   ${CMAKE_SOURCE_DIR}/src/core/metadata
   ${CMAKE_SOURCE_DIR}/src/core/expression
+  ${CMAKE_SOURCE_DIR}/src/core/3d
   ${CMAKE_BINARY_DIR}/src/core
   ${CMAKE_BINARY_DIR}/src/3d
 )

src/3d/CMakeLists.txt

@@ -1,9 +1,9 @@
 #include "map3d.h"
 
-#include "abstract3drenderer.h"
 #include "flatterraingenerator.h"
 #include "demterraingenerator.h"
 //#include "quantizedmeshterraingenerator.h"
+#include "vectorlayer3drenderer.h"
 
 #include <QDomDocument>
 #include <QDomElement>
@@ -44,7 +44,7 @@ Map3D::Map3D( const Map3D &other )
   , mShowTerrainTileInfo( other.mShowTerrainTileInfo )
   , mLayers( other.mLayers )
 {
-  Q_FOREACH ( Abstract3DRenderer *renderer, other.renderers )
+  Q_FOREACH ( QgsAbstract3DRenderer *renderer, other.renderers )
   {
     renderers << renderer->clone();
   }
@@ -108,7 +108,7 @@ void Map3D::readXml( const QDomElement &elem, const QgsReadWriteContext &context
   QDomElement elemRenderer = elemRenderers.firstChildElement( "renderer" );
   while ( !elemRenderer.isNull() )
   {
-    Abstract3DRenderer *renderer = nullptr;
+    QgsAbstract3DRenderer *renderer = nullptr;
     QString type = elemRenderer.attribute( "type" );
     if ( type == "vector" )
     {
@@ -167,7 +167,7 @@ QDomElement Map3D::writeXml( QDomDocument &doc, const QgsReadWriteContext &conte
   elem.appendChild( elemTerrain );
 
   QDomElement elemRenderers = doc.createElement( "renderers" );
-  Q_FOREACH ( const Abstract3DRenderer *renderer, renderers )
+  Q_FOREACH ( const QgsAbstract3DRenderer *renderer, renderers )
   {
     QDomElement elemRenderer = doc.createElement( "renderer" );
     elemRenderer.setAttribute( "type", renderer->type() );
@@ -203,7 +203,7 @@ void Map3D::resolveReferences( const QgsProject &project )
 
   for ( int i = 0; i < renderers.count(); ++i )
   {
-    Abstract3DRenderer *renderer = renderers[i];
+    QgsAbstract3DRenderer *renderer = renderers[i];
     renderer->resolveReferences( project );
   }
 }

src/3d/map3d.cpp

@@ -13,7 +13,7 @@
 class QgsMapLayer;
 class QgsRasterLayer;
 
-class Abstract3DRenderer;
+class QgsAbstract3DRenderer;
 class TerrainGenerator;
 
 
@@ -61,7 +61,7 @@ class _3D_EXPORT Map3D : public QObject
     // 3D renderers
     //
 
-    QList<Abstract3DRenderer *> renderers;  //!< Stuff to render as 3D object
+    QList<QgsAbstract3DRenderer *> renderers;  //!< Stuff to render as 3D object
 
     bool skybox;  //!< Whether to render skybox
     QString skyboxFileBase;

src/3d/map3d.h

@@ -12,10 +12,10 @@ class _3D_EXPORT PhongMaterialSettings
 {
   public:
     PhongMaterialSettings()
-      : mAmbient( QColor::fromRgbF( 0.05f, 0.05f, 0.05f, 1.0f ) )
+      : mAmbient( QColor::fromRgbF( 0.1f, 0.1f, 0.1f, 1.0f ) )
       , mDiffuse( QColor::fromRgbF( 0.7f, 0.7f, 0.7f, 1.0f ) )
-      , mSpecular( QColor::fromRgbF( 0.01f, 0.01f, 0.01f, 1.0f ) )
-      , mShininess( 150.0f )
+      , mSpecular( QColor::fromRgbF( 1.0f, 1.0f, 1.0f, 1.0f ) )
+      , mShininess( 0.0f )
     {
     }
 

src/3d/phongmaterialsettings.h

@@ -8,7 +8,7 @@
 #include <Qt3DLogic/QFrameAction>
 
 #include "aabb.h"
-#include "abstract3drenderer.h"
+#include "qgsabstract3drenderer.h"
 #include "cameracontroller.h"
 #include "map3d.h"
 #include "terrain.h"
@@ -59,12 +59,26 @@ Scene::Scene( const Map3D &map, Qt3DExtras::QForwardRenderer *defaultFrameGraph,
 
   // create entities of renderers
 
-  Q_FOREACH ( const Abstract3DRenderer *renderer, map.renderers )
+  Q_FOREACH ( const QgsAbstract3DRenderer *renderer, map.renderers )
   {
     Qt3DCore::QEntity *p = renderer->createEntity( map );
     p->setParent( this );
   }
 
+  // create entities of renderers of layers
+
+  Q_FOREACH ( QgsMapLayer *layer, map.layers() )
+  {
+    if ( layer->renderer3D() )
+    {
+      Qt3DCore::QEntity *p = layer->renderer3D()->createEntity( map );
+      p->setParent( this );
+      mLayerEntities.insert( layer, p );
+    }
+    connect( layer, &QgsMapLayer::renderer3DChanged, this, &Scene::onLayerRenderer3DChanged );
+    // TODO: connect( layer, &QgsMapLayer::willBeDeleted, this, &Scene::onLayerWillBeDeleted );
+  }
+
   Qt3DCore::QEntity *lightEntity = new Qt3DCore::QEntity;
   Qt3DCore::QTransform *lightTransform = new Qt3DCore::QTransform;
   lightTransform->setTranslation( QVector3D( 0, 1000, 0 ) );
@@ -83,10 +97,10 @@ Scene::Scene( const Map3D &map, Qt3DExtras::QForwardRenderer *defaultFrameGraph,
   ChunkedEntity *testChunkEntity = new ChunkedEntity( AABB( -500, 0, -500, 500, 100, 500 ), 2.f, 3.f, 7, new TestChunkLoaderFactory );
   testChunkEntity->setEnabled( false );
   testChunkEntity->setParent( this );
-  chunkEntities << testChunkEntity
+  chunkEntities << testChunkEntity;
 #endif
 
-                connect( mCameraController, &CameraController::cameraChanged, this, &Scene::onCameraChanged );
+  connect( mCameraController, &CameraController::cameraChanged, this, &Scene::onCameraChanged );
   connect( mCameraController, &CameraController::viewportChanged, this, &Scene::onCameraChanged );
 
 #if 0
@@ -190,3 +204,23 @@ void Scene::createTerrain()
 
   onCameraChanged();  // force update of the new terrain
 }
+
+void Scene::onLayerRenderer3DChanged()
+{
+  QgsMapLayer *layer = qobject_cast<QgsMapLayer *>( sender() );
+  Q_ASSERT( layer );
+
+  // remove old entity - if any
+  Qt3DCore::QEntity *entity = mLayerEntities.take( layer );
+  if ( entity )
+    entity->deleteLater();
+
+  // add new entity - if any 3D renderer
+  QgsAbstract3DRenderer *renderer = layer->renderer3D();
+  if ( renderer )
+  {
+    Qt3DCore::QEntity *newEntity = renderer->createEntity( mMap );
+    newEntity->setParent( this );
+    mLayerEntities.insert( layer, newEntity );
+  }
+}

src/3d/scene.cpp

@@ -21,6 +21,7 @@ namespace Qt3DExtras
   class QForwardRenderer;
 }
 
+class QgsMapLayer;
 class CameraController;
 class Map3D;
 class Terrain;
@@ -42,6 +43,7 @@ class _3D_EXPORT Scene : public Qt3DCore::QEntity
     void onCameraChanged();
     void onFrameTriggered( float dt );
     void createTerrain();
+    void onLayerRenderer3DChanged();
 
   private:
     const Map3D &mMap;
@@ -50,6 +52,8 @@ class _3D_EXPORT Scene : public Qt3DCore::QEntity
     CameraController *mCameraController;
     Terrain *mTerrain;
     QList<ChunkedEntity *> chunkEntities;
+    //! Keeps track of entities that belong to a particular layer
+    QMap<QgsMapLayer *, Qt3DCore::QEntity *> mLayerEntities;
 };
 
 #endif // SCENE_H

src/3d/scene.h

@@ -5,10 +5,10 @@
 #include <Qt3DRender>
 #include <Qt3DExtras>
 
-#include "abstract3drenderer.h"
 #include "abstract3dsymbol.h"
 #include "maptexturegenerator.h"
 #include "sidepanel.h"
+#include "vectorlayer3drenderer.h"
 #include "window3d.h"
 #include "map3d.h"
 #include "flatterraingenerator.h"
@@ -239,6 +239,7 @@ int main( int argc, char *argv[] )
   hLayout->addWidget( container, 1 );
   hLayout->addWidget( sidePanel );
 
+  widget.setWindowTitle( "QGIS 3D" );
   widget.resize( 800, 600 );
   widget.show();
 

src/3d/testapp/main.cpp

@@ -1,4 +1,4 @@
-#include "abstract3drenderer.h"
+#include "vectorlayer3drenderer.h"
 
 #include "abstract3dsymbol.h"
 #include "lineentity.h"
@@ -18,7 +18,7 @@ VectorLayer3DRenderer::~VectorLayer3DRenderer()
 {
 }
 
-Abstract3DRenderer *VectorLayer3DRenderer::clone() const
+VectorLayer3DRenderer *VectorLayer3DRenderer::clone() const
 {
   VectorLayer3DRenderer *r = new VectorLayer3DRenderer( mSymbol ? mSymbol->clone() : nullptr );
   r->layerRef = layerRef;