25#include <Qt3DCore/QTransform>
26#include <Qt3DRender/QMaterial>
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>
49class QgsPolygon3DSymbolHandler :
public QgsFeature3DHandler
54 , mSelectedIds( selectedIds ) {}
56 bool prepare(
const Qgs3DRenderContext &context, QSet<QString> &attributeNames )
override;
57 void processFeature(
const QgsFeature &f,
const Qgs3DRenderContext &context )
override;
58 void finalize( Qt3DCore::QEntity *parent,
const Qgs3DRenderContext &context )
override;
65 std::unique_ptr<QgsTessellator> tessellator;
66 QVector<QgsFeatureId> triangleIndexFids;
67 QVector<uint> triangleIndexStartingIndices;
68 QByteArray materialDataDefined;
71 void processPolygon(
const QgsPolygon *poly,
QgsFeatureId fid,
float height,
float extrusionHeight,
const Qgs3DRenderContext &context, PolygonData &out );
72 void processMaterialDatadefined( uint verticesCount,
const QgsExpressionContext &context, PolygonData &out );
73 void makeEntity( Qt3DCore::QEntity *parent,
const Qgs3DRenderContext &context, PolygonData &out,
bool selected );
74 Qt3DRender::QMaterial *material(
const QgsPolygon3DSymbol *symbol,
bool isSelected,
const Qgs3DRenderContext &context )
const;
77 std::unique_ptr< QgsPolygon3DSymbol > mSymbol;
82 PolygonData outNormal;
83 PolygonData outSelected;
85 QgsLineVertexData outEdges;
89bool QgsPolygon3DSymbolHandler::prepare(
const Qgs3DRenderContext &context, QSet<QString> &attributeNames )
91 outEdges.withAdjacency =
true;
92 outEdges.init( mSymbol->altitudeClamping(), mSymbol->altitudeBinding(), 0, &context.map() );
96 outNormal.tessellator.reset(
new QgsTessellator( context.map().origin().x(), context.map().origin().y(),
true, mSymbol->invertNormals(), mSymbol->addBackFaces(),
false,
98 mSymbol->renderedFacade(),
99 texturedMaterialSettings ? texturedMaterialSettings->
textureRotation() : 0 ) );
100 outSelected.tessellator.reset(
new QgsTessellator( context.map().origin().x(), context.map().origin().y(),
true, mSymbol->invertNormals(),
101 mSymbol->addBackFaces(),
false,
103 mSymbol->renderedFacade(),
104 texturedMaterialSettings ? texturedMaterialSettings->
textureRotation() : 0 ) );
107 attributeNames.unite( attrs );
108 attrs = mSymbol->materialSettings()->dataDefinedProperties().referencedFields( context.expressionContext() );
109 attributeNames.unite( attrs );
113void QgsPolygon3DSymbolHandler::processPolygon(
const QgsPolygon *poly,
QgsFeatureId fid,
float height,
float extrusionHeight,
const Qgs3DRenderContext &context, PolygonData &out )
115 std::unique_ptr< QgsPolygon > polyClone( poly->
clone() );
117 const uint oldVerticesCount = out.tessellator->dataVerticesCount();
118 if ( mSymbol->edgesEnabled() )
121 outEdges.addLineString( *
static_cast<const QgsLineString *
>( polyClone->exteriorRing() ), height );
122 for (
int i = 0; i < polyClone->numInteriorRings(); ++i )
123 outEdges.addLineString( *
static_cast<const QgsLineString *
>( polyClone->interiorRing( i ) ), height );
125 if ( extrusionHeight )
129 outEdges.addLineString( *exterior, extrusionHeight + height );
130 outEdges.addVerticalLines( *exterior, extrusionHeight, height );
131 for (
int i = 0; i < polyClone->numInteriorRings(); ++i )
134 outEdges.addLineString( *interior, extrusionHeight + height );
135 outEdges.addVerticalLines( *interior, extrusionHeight, height );
140 Qgs3DUtils::clampAltitudes( polyClone.get(), mSymbol->altitudeClamping(), mSymbol->altitudeBinding(), height, context.map() );
142 Q_ASSERT( out.tessellator->dataVerticesCount() % 3 == 0 );
143 const uint startingTriangleIndex =
static_cast<uint
>( out.tessellator->dataVerticesCount() / 3 );
144 out.triangleIndexStartingIndices.append( startingTriangleIndex );
145 out.triangleIndexFids.append( fid );
146 out.tessellator->addPolygon( *polyClone, extrusionHeight );
148 if ( mSymbol->materialSettings()->dataDefinedProperties().hasActiveProperties() )
149 processMaterialDatadefined( out.tessellator->dataVerticesCount() - oldVerticesCount, context.expressionContext(), out );
152void QgsPolygon3DSymbolHandler::processMaterialDatadefined( uint verticesCount,
const QgsExpressionContext &context, QgsPolygon3DSymbolHandler::PolygonData &out )
154 const QByteArray bytes = mSymbol->materialSettings()->dataDefinedVertexColorsAsByte( context );
155 out.materialDataDefined.append( bytes.repeated( verticesCount ) );
158void QgsPolygon3DSymbolHandler::processFeature(
const QgsFeature &f,
const Qgs3DRenderContext &context )
163 PolygonData &out = mSelectedIds.contains( f.
id() ) ? outSelected : outNormal;
179 float height = mSymbol->height();
180 float extrusionHeight = mSymbol->extrusionHeight();
183 if ( hasDDExtrusion )
186 if (
const QgsPolygon *poly = qgsgeometry_cast< const QgsPolygon *>( g ) )
188 processPolygon( poly, f.
id(), height, extrusionHeight, context, out );
190 else if (
const QgsMultiPolygon *mpoly = qgsgeometry_cast< const QgsMultiPolygon *>( g ) )
192 for (
int i = 0; i < mpoly->numGeometries(); ++i )
194 const QgsPolygon *poly = mpoly->polygonN( i );
195 processPolygon( poly, f.
id(), height, extrusionHeight, context, out );
200 for (
int i = 0; i < gc->numGeometries(); ++i )
206 processPolygon( poly, f.
id(), height, extrusionHeight, context, out );
211 qWarning() <<
"not a polygon";
216void QgsPolygon3DSymbolHandler::finalize( Qt3DCore::QEntity *parent,
const Qgs3DRenderContext &context )
219 makeEntity( parent, context, outNormal,
false );
220 makeEntity( parent, context, outSelected,
true );
222 mZMin = std::min( outNormal.tessellator->zMinimum(), outSelected.tessellator->zMinimum() );
223 mZMax = std::max( outNormal.tessellator->zMaximum(), outSelected.tessellator->zMaximum() );
226 if ( mSymbol->edgesEnabled() && !outEdges.indexes.isEmpty() )
228 QgsLineMaterial *mat =
new QgsLineMaterial;
229 mat->setLineColor( mSymbol->edgeColor() );
230 mat->setLineWidth( mSymbol->edgeWidth() );
232 Qt3DCore::QEntity *entity =
new Qt3DCore::QEntity;
233 entity->setObjectName( parent->objectName() +
"_EDGES" );
236 Qt3DRender::QGeometryRenderer *renderer =
new Qt3DRender::QGeometryRenderer;
237 renderer->setPrimitiveType( Qt3DRender::QGeometryRenderer::LineStripAdjacency );
238 renderer->setGeometry( outEdges.createGeometry( entity ) );
239 renderer->setVertexCount( outEdges.indexes.count() );
240 renderer->setPrimitiveRestartEnabled(
true );
241 renderer->setRestartIndexValue( 0 );
244 entity->addComponent( renderer );
245 entity->addComponent( mat );
246 entity->setParent( parent );
251void QgsPolygon3DSymbolHandler::makeEntity( Qt3DCore::QEntity *parent,
const Qgs3DRenderContext &context, PolygonData &polyData,
bool selected )
253 if ( polyData.tessellator->dataVerticesCount() == 0 )
256 Qt3DRender::QMaterial *mat = material( mSymbol.get(), selected, context );
259 const QByteArray data(
reinterpret_cast<const char *
>( polyData.tessellator->data().constData() ),
static_cast<int>( polyData.tessellator->data().count() *
sizeof(
float ) ) );
260 const int nVerts = data.count() / polyData.tessellator->stride();
267 geometry->
setData( data, nVerts, polyData.triangleIndexFids, polyData.triangleIndexStartingIndices );
269 if ( mSymbol->materialSettings()->dataDefinedProperties().hasActiveProperties() )
270 mSymbol->materialSettings()->applyDataDefinedToGeometry( geometry, nVerts, polyData.materialDataDefined );
272 Qt3DRender::QGeometryRenderer *renderer =
new Qt3DRender::QGeometryRenderer;
273 renderer->setGeometry( geometry );
276 Qt3DCore::QEntity *entity =
new Qt3DCore::QEntity;
277 entity->setObjectName( parent->objectName() +
"_CHUNK_MESH" );
278 entity->addComponent( renderer );
279 entity->addComponent( mat );
280 entity->setParent( parent );
292 const auto techniques = material->effect()->techniques();
293 for (
auto tit = techniques.constBegin(); tit != techniques.constEnd(); ++tit )
295 auto renderPasses = ( *tit )->renderPasses();
296 for (
auto rpit = renderPasses.begin(); rpit != renderPasses.end(); ++rpit )
298 Qt3DRender::QCullFace *cullFace =
new Qt3DRender::QCullFace;
300 ( *rpit )->addRenderState( cullFace );
305Qt3DRender::QMaterial *QgsPolygon3DSymbolHandler::material(
const QgsPolygon3DSymbol *symbol,
bool isSelected,
const Qgs3DRenderContext &context )
const
311 const bool dataDefined = mSymbol->materialSettings()->dataDefinedProperties().hasActiveProperties();
315 applyCullingMode( symbol->
cullingMode(), material );
323namespace Qgs3DSymbolImpl
330 if ( !polygonSymbol )
338 QgsFeature3DHandler *handler = handlerForPolygon3DSymbol( layer, &symbol );
339 Qt3DCore::QEntity *e = entityFromHandler( handler, map, layer );
@ 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 height, const Qgs3DMapSettings &map)
Clamps altitude of vertices of a linestring according to the settings.
@ PropertyHeight
Height (altitude)
@ PropertyExtrusionHeight
Extrusion height (zero means no extrusion)
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 Qt3DRender::QMaterial * toMaterial(QgsMaterialSettingsRenderingTechnique technique, const QgsMaterialContext &context) const =0
Creates a new QMaterial 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.
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.
A grouped map of multiple QgsProperty objects, each referenced by a integer key value.
QSet< QString > referencedFields(const QgsExpressionContext &context=QgsExpressionContext(), bool ignoreContext=false) const override
Returns the set of any fields referenced by the active properties from the collection.
bool isActive(int key) const override
Returns true if the collection contains an active property with the specified key.
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.
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