26#include <Qt3DCore/QTransform>
27#include <Qt3DExtras/QPhongMaterial>
29#include <Qt3DExtras/QDiffuseMapMaterial>
30#include <Qt3DRender/QAbstractTextureImage>
31#include <Qt3DRender/QTexture>
33#include <Qt3DRender/QEffect>
34#include <Qt3DRender/QTechnique>
35#include <Qt3DRender/QCullFace>
36#include <Qt3DRender/QGeometryRenderer>
50class QgsPolygon3DSymbolHandler :
public QgsFeature3DHandler
55 , mSelectedIds( selectedIds ) {}
57 bool prepare(
const Qgs3DRenderContext &context, QSet<QString> &attributeNames )
override;
59 void finalize( Qt3DCore::QEntity *parent,
const Qgs3DRenderContext &context )
override;
66 std::unique_ptr<QgsTessellator> tessellator;
67 QVector<QgsFeatureId> triangleIndexFids;
68 QVector<uint> triangleIndexStartingIndices;
69 QByteArray materialDataDefined;
73 void processMaterialDatadefined( uint verticesCount,
const QgsExpressionContext &context, PolygonData &out );
74 void makeEntity( Qt3DCore::QEntity *parent,
const Qgs3DRenderContext &context, PolygonData &out,
bool selected );
78 std::unique_ptr< QgsPolygon3DSymbol > mSymbol;
83 PolygonData outNormal;
84 PolygonData outSelected;
86 QgsLineVertexData outEdges;
90bool QgsPolygon3DSymbolHandler::prepare(
const Qgs3DRenderContext &context, QSet<QString> &attributeNames )
92 outEdges.withAdjacency =
true;
93 outEdges.init( mSymbol->altitudeClamping(), mSymbol->altitudeBinding(), 0, context );
97 outNormal.tessellator.reset(
new QgsTessellator( context.
origin().
x(), context.
origin().
y(),
true, mSymbol->invertNormals(), mSymbol->addBackFaces(),
false,
99 mSymbol->renderedFacade(),
100 texturedMaterialSettings ? texturedMaterialSettings->
textureRotation() : 0 ) );
102 mSymbol->addBackFaces(),
false,
104 mSymbol->renderedFacade(),
105 texturedMaterialSettings ? texturedMaterialSettings->
textureRotation() : 0 ) );
108 attributeNames.unite( attrs );
109 attrs = mSymbol->materialSettings()->dataDefinedProperties().referencedFields( context.
expressionContext() );
110 attributeNames.unite( attrs );
116 std::unique_ptr< QgsPolygon > polyClone( poly->
clone() );
118 const uint oldVerticesCount = out.tessellator->dataVerticesCount();
119 if ( mSymbol->edgesEnabled() )
122 outEdges.addLineString( *
static_cast<const QgsLineString *
>( polyClone->exteriorRing() ), offset );
123 for (
int i = 0; i < polyClone->numInteriorRings(); ++i )
124 outEdges.addLineString( *
static_cast<const QgsLineString *
>( polyClone->interiorRing( i ) ), offset );
126 if ( extrusionHeight )
130 outEdges.addLineString( *exterior, extrusionHeight + offset );
131 outEdges.addVerticalLines( *exterior, extrusionHeight, offset );
132 for (
int i = 0; i < polyClone->numInteriorRings(); ++i )
135 outEdges.addLineString( *interior, extrusionHeight + offset );
136 outEdges.addVerticalLines( *interior, extrusionHeight, offset );
143 Q_ASSERT( out.tessellator->dataVerticesCount() % 3 == 0 );
144 const uint startingTriangleIndex =
static_cast<uint
>( out.tessellator->dataVerticesCount() / 3 );
145 out.triangleIndexStartingIndices.append( startingTriangleIndex );
146 out.triangleIndexFids.append( fid );
147 out.tessellator->addPolygon( *polyClone, extrusionHeight );
148 if ( !out.tessellator->error().isEmpty() )
153 if ( mSymbol->materialSettings()->dataDefinedProperties().hasActiveProperties() )
154 processMaterialDatadefined( out.tessellator->dataVerticesCount() - oldVerticesCount, context.
expressionContext(), out );
157void QgsPolygon3DSymbolHandler::processMaterialDatadefined( uint verticesCount,
const QgsExpressionContext &context, QgsPolygon3DSymbolHandler::PolygonData &out )
159 const QByteArray bytes = mSymbol->materialSettings()->dataDefinedVertexColorsAsByte( context );
160 out.materialDataDefined.append( bytes.repeated( verticesCount ) );
168 PolygonData &out = mSelectedIds.contains( f.
id() ) ? outSelected : outNormal;
184 float offset = mSymbol->offset();
185 float extrusionHeight = mSymbol->extrusionHeight();
188 if ( hasDDExtrusion )
191 if (
const QgsPolygon *poly = qgsgeometry_cast< const QgsPolygon *>( g ) )
193 processPolygon( poly, f.
id(), offset, extrusionHeight, context, out );
195 else if (
const QgsMultiPolygon *mpoly = qgsgeometry_cast< const QgsMultiPolygon *>( g ) )
197 for (
int i = 0; i < mpoly->numGeometries(); ++i )
199 const QgsPolygon *poly = mpoly->polygonN( i );
200 processPolygon( poly, f.
id(), offset, extrusionHeight, context, out );
205 for (
int i = 0; i < gc->numGeometries(); ++i )
211 processPolygon( poly, f.
id(), offset, extrusionHeight, context, out );
215 else if (
const QgsPolyhedralSurface *polySurface = qgsgeometry_cast< const QgsPolyhedralSurface *>( g ) )
217 for (
int i = 0; i < polySurface->numPatches(); ++i )
219 const QgsPolygon *poly = polySurface->patchN( i );
220 processPolygon( poly, f.
id(), offset, extrusionHeight, context, out );
224 qWarning() <<
"not a polygon";
229void QgsPolygon3DSymbolHandler::finalize( Qt3DCore::QEntity *parent,
const Qgs3DRenderContext &context )
232 makeEntity( parent, context, outNormal,
false );
233 makeEntity( parent, context, outSelected,
true );
235 mZMin = std::min( outNormal.tessellator->zMinimum(), outSelected.tessellator->zMinimum() );
236 mZMax = std::max( outNormal.tessellator->zMaximum(), outSelected.tessellator->zMaximum() );
239 if ( mSymbol->edgesEnabled() && !outEdges.indexes.isEmpty() )
241 QgsLineMaterial *mat =
new QgsLineMaterial;
242 mat->setLineColor( mSymbol->edgeColor() );
243 mat->setLineWidth( mSymbol->edgeWidth() );
245 Qt3DCore::QEntity *entity =
new Qt3DCore::QEntity;
246 entity->setObjectName( parent->objectName() +
"_EDGES" );
249 Qt3DRender::QGeometryRenderer *renderer =
new Qt3DRender::QGeometryRenderer;
250 renderer->setPrimitiveType( Qt3DRender::QGeometryRenderer::LineStripAdjacency );
251 renderer->setGeometry( outEdges.createGeometry( entity ) );
252 renderer->setVertexCount( outEdges.indexes.count() );
253 renderer->setPrimitiveRestartEnabled(
true );
254 renderer->setRestartIndexValue( 0 );
257 entity->addComponent( renderer );
258 entity->addComponent( mat );
259 entity->setParent( parent );
264void QgsPolygon3DSymbolHandler::makeEntity( Qt3DCore::QEntity *parent,
const Qgs3DRenderContext &context, PolygonData &polyData,
bool selected )
266 if ( polyData.tessellator->dataVerticesCount() == 0 )
269 QgsMaterial *mat = material( mSymbol.get(), selected, context );
272 const QByteArray data(
reinterpret_cast<const char *
>( polyData.tessellator->data().constData() ),
static_cast<int>( polyData.tessellator->data().count() *
sizeof(
float ) ) );
273 const int nVerts = data.count() / polyData.tessellator->stride();
280 geometry->
setData( data, nVerts, polyData.triangleIndexFids, polyData.triangleIndexStartingIndices );
282 if ( mSymbol->materialSettings()->dataDefinedProperties().hasActiveProperties() )
283 mSymbol->materialSettings()->applyDataDefinedToGeometry( geometry, nVerts, polyData.materialDataDefined );
285 Qt3DRender::QGeometryRenderer *renderer =
new Qt3DRender::QGeometryRenderer;
286 renderer->setGeometry( geometry );
289 Qt3DCore::QEntity *entity =
new Qt3DCore::QEntity;
290 entity->setObjectName( parent->objectName() +
"_CHUNK_MESH" );
291 entity->addComponent( renderer );
292 entity->addComponent( mat );
293 entity->setParent( parent );
305 const auto techniques = material->effect()->techniques();
306 for (
auto tit = techniques.constBegin(); tit != techniques.constEnd(); ++tit )
308 auto renderPasses = ( *tit )->renderPasses();
309 for (
auto rpit = renderPasses.begin(); rpit != renderPasses.end(); ++rpit )
311 Qt3DRender::QCullFace *cullFace =
new Qt3DRender::QCullFace;
313 ( *rpit )->addRenderState( cullFace );
324 const bool dataDefined = mSymbol->materialSettings()->dataDefinedProperties().hasActiveProperties();
328 applyCullingMode( symbol->
cullingMode(), material );
336namespace Qgs3DSymbolImpl
343 if ( !polygonSymbol )
QColor selectionColor() const
Returns color used for selected features.
QgsExpressionContext & expressionContext()
Gets the expression context.
QgsVector3D origin() const
Returns coordinates in map CRS at which 3D scene has origin (0,0,0)
@ Main3DRenderer
Renderer for normal entities.
static const char * PROP_NAME_3D_RENDERER_FLAG
Qt property name to hold the 3D geometry renderer flag.
CullingMode
Triangle culling mode.
static Qt3DRender::QCullFace::CullingMode qt3DcullingMode(Qgs3DTypes::CullingMode mode)
Converts Qgs3DTypes::CullingMode mode into its Qt3D equivalent.
static void clampAltitudes(QgsLineString *lineString, Qgis::AltitudeClamping altClamp, Qgis::AltitudeBinding altBind, const QgsPoint ¢roid, float offset, const Qgs3DRenderContext &context)
Clamps altitude of vertices of a linestring according to the settings.
@ ExtrusionHeight
Extrusion height (zero means no extrusion)
@ Height
Height (altitude)
Abstract base class for all geometries.
virtual const QgsAbstractGeometry * simplifiedTypeRef() const
Returns a reference to the simplest lossless representation of this geometry, e.g.
virtual QgsAbstractGeometry * segmentize(double tolerance=M_PI/180., SegmentationToleranceType toleranceType=MaximumAngle) const
Returns a version of the geometry without curves.
Qgis::WkbType wkbType() const
Returns the WKB type of the geometry.
virtual QgsMaterial * toMaterial(QgsMaterialSettingsRenderingTechnique technique, const QgsMaterialContext &context) const =0
Creates a new QgsMaterial object representing the material settings.
QgsPropertyCollection dataDefinedProperties() const
Returns the symbol material property collection, used for data defined overrides.
double valueAsDouble(int key, const QgsExpressionContext &context, double defaultValue=0.0, bool *ok=nullptr) const
Calculates the current value of the property with the specified key and interprets it as a double.
Expression contexts are used to encapsulate the parameters around which a QgsExpression should be eva...
The feature class encapsulates a single feature including its unique ID, geometry and a list of field...
A geometry is the spatial representation of a feature.
const QgsAbstractGeometry * constGet() const
Returns a non-modifiable (const) reference to the underlying abstract geometry primitive.
Line string geometry type, with support for z-dimension and m-values.
void setIsSelected(bool isSelected)
Sets whether the material should represent a selected state.
void setSelectionColor(const QColor &color)
Sets the color for representing materials in a selected state.
static void logMessage(const QString &message, const QString &tag=QString(), Qgis::MessageLevel level=Qgis::MessageLevel::Warning, bool notifyUser=true)
Adds a message to the log instance (and creates it if necessary).
Multi polygon geometry collection.
bool requiresTextureCoordinates() const
Returns true if the material requires texture coordinates to be generated during triangulation....
float textureRotation() const
Returns the texture rotation, in degrees.
QgsAbstractMaterialSettings * materialSettings() const
Returns material settings used for shading of the symbol.
Qgs3DTypes::CullingMode cullingMode() const
Returns front/back culling mode.
QgsPolygon * clone() const override
Clones the geometry by performing a deep copy.
Polyhedral surface geometry type.
A grouped map of multiple QgsProperty objects, each referenced by a integer key value.
bool isActive(int key) const final
Returns true if the collection contains an active property with the specified key.
QSet< QString > referencedFields(const QgsExpressionContext &context=QgsExpressionContext(), bool ignoreContext=false) const final
Returns the set of any fields referenced by the active properties from the collection.
void setData(const QByteArray &vertexBufferData, int vertexCount, const QVector< QgsFeatureId > &triangleIndexFids, const QVector< uint > &triangleIndexStartingIndices)
Initializes vertex buffer (and other members) from data that were already tessellated.
Class that takes care of tessellation of polygons into triangles.
double y() const
Returns Y coordinate.
double x() const
Returns X coordinate.
Represents a vector layer which manages a vector based data sets.
Q_INVOKABLE const QgsFeatureIds & selectedFeatureIds() const
Returns a list of the selected features IDs in this layer.
static bool isCurvedType(Qgis::WkbType type)
Returns true if the WKB type is a curved type or can contain curved geometries.
static Qgis::WkbType flatType(Qgis::WkbType type)
Returns the flat type for a WKB type.
QgsMaterialSettingsRenderingTechnique
Material rendering techniques 3.
@ Triangles
Triangle based rendering (default)
@ TrianglesDataDefined
Triangle based rendering with possibility of datadefined color.
QSet< QgsFeatureId > QgsFeatureIds
qint64 QgsFeatureId
64 bit feature ids negative numbers are used for uncommitted/newly added features