Abstract base class for 2d tiled scene renderers. More...

#include <qgstiledscenerenderer.h>

Inheritance diagram for QgsTiledSceneRenderer:

[legend]

Public Member Functions
	QgsTiledSceneRenderer ()=default

	QgsTiledSceneRenderer (const QgsTiledSceneRenderer &other)=delete
	QgsTiledSceneRenderer cannot be copied – use clone() instead.

virtual	~QgsTiledSceneRenderer ()=default

virtual QgsTiledSceneRenderer *	clone () const =0
	Create a deep copy of this renderer.

virtual QList< QgsLayerTreeModelLegendNode * >	createLegendNodes (QgsLayerTreeLayer *nodeLayer)
	Creates a set of legend nodes representing the renderer.

virtual Qgis::TiledSceneRendererFlags	flags () const
	Returns flags which control how the renderer behaves.

bool	isTileBorderRenderingEnabled () const
	Returns whether to render also borders of tiles.

virtual QStringList	legendRuleKeys () const
	Returns a list of all rule keys for legend nodes created by the renderer.

double	maximumScreenError () const
	Returns the maximum screen error allowed when rendering the tiled scene.

Qgis::RenderUnit	maximumScreenErrorUnit () const
	Returns the unit for the maximum screen error allowed when rendering the tiled scene.

QgsTiledSceneRenderer &	operator= (const QgsTiledSceneRenderer &other)=delete
	QgsTiledSceneRenderer cannot be copied – use clone() instead.

virtual void	renderLine (QgsTiledSceneRenderContext &context, const QPolygonF &line)=0
	Renders a line.

virtual void	renderTriangle (QgsTiledSceneRenderContext &context, const QPolygonF &triangle)=0
	Renders a triangle.

virtual QDomElement	save (QDomDocument &doc, const QgsReadWriteContext &context) const =0
	Saves the renderer configuration to an XML element.

void	setMaximumScreenError (double error)
	Sets the maximum screen error allowed when rendering the tiled scene.

void	setMaximumScreenErrorUnit (Qgis::RenderUnit unit)
	Sets the unit for the maximum screen error allowed when rendering the tiled scene.

void	setTileBorderRenderingEnabled (bool enabled)
	Sets whether to render the borders of tiles.

virtual void	startRender (QgsTiledSceneRenderContext &context)
	Must be called when a new render cycle is started.

virtual void	stopRender (QgsTiledSceneRenderContext &context)
	Must be called when a render cycle has finished, to allow the renderer to clean up.

virtual QString	type () const =0
	Returns the identifier of the renderer type.

Static Public Member Functions
static QgsTiledSceneRenderer *	load (QDomElement &element, const QgsReadWriteContext &context)
	Creates a renderer from an XML element.

Protected Member Functions
void	copyCommonProperties (QgsTiledSceneRenderer *destination) const
	Copies common tiled scene renderer properties (such as screen error) to the destination renderer.

void	restoreCommonProperties (const QDomElement &element, const QgsReadWriteContext &context)
	Restores common renderer properties (such as screen error) from the specified DOM element.

void	saveCommonProperties (QDomElement &element, const QgsReadWriteContext &context) const
	Saves common renderer properties (such as point size and screen error) to the specified DOM element.

Detailed Description

Abstract base class for 2d tiled scene renderers.

Since: QGIS 3.34

Definition at line 119 of file qgstiledscenerenderer.h.

Constructor & Destructor Documentation

◆ QgsTiledSceneRenderer() [1/2]

QgsTiledSceneRenderer::QgsTiledSceneRenderer ( )

default

◆ ~QgsTiledSceneRenderer()

virtual QgsTiledSceneRenderer::~QgsTiledSceneRenderer ( )

virtualdefault

◆ QgsTiledSceneRenderer() [2/2]

QgsTiledSceneRenderer::QgsTiledSceneRenderer ( const QgsTiledSceneRenderer & other )

delete

QgsTiledSceneRenderer cannot be copied – use clone() instead.

Member Function Documentation

◆ clone()

virtual QgsTiledSceneRenderer * QgsTiledSceneRenderer::clone ( ) const

pure virtual

Create a deep copy of this renderer.

Should be implemented by all subclasses and generate a proper subclass.

Implemented in QgsTiledSceneTextureRenderer, and QgsTiledSceneWireframeRenderer.

◆ copyCommonProperties()

void QgsTiledSceneRenderer::copyCommonProperties ( QgsTiledSceneRenderer * destination ) const

protected

Copies common tiled scene renderer properties (such as screen error) to the destination renderer.

Definition at line 142 of file qgstiledscenerenderer.cpp.

◆ createLegendNodes()

QList< QgsLayerTreeModelLegendNode * > QgsTiledSceneRenderer::createLegendNodes ( QgsLayerTreeLayer * nodeLayer )

virtual

Creates a set of legend nodes representing the renderer.

Definition at line 132 of file qgstiledscenerenderer.cpp.

◆ flags()

Qgis::TiledSceneRendererFlags QgsTiledSceneRenderer::flags ( ) const

virtual

Returns flags which control how the renderer behaves.

Reimplemented in QgsTiledSceneTextureRenderer, and QgsTiledSceneWireframeRenderer.

Definition at line 70 of file qgstiledscenerenderer.cpp.

◆ isTileBorderRenderingEnabled()

bool QgsTiledSceneRenderer::isTileBorderRenderingEnabled ( ) const

inline

Returns whether to render also borders of tiles.

see setTileBorderRenderingEnabled()

Definition at line 231 of file qgstiledscenerenderer.h.

◆ legendRuleKeys()

QStringList QgsTiledSceneRenderer::legendRuleKeys ( ) const

virtual

Returns a list of all rule keys for legend nodes created by the renderer.

Definition at line 137 of file qgstiledscenerenderer.cpp.

◆ load()

QgsTiledSceneRenderer * QgsTiledSceneRenderer::load	(	QDomElement &	element,
		const QgsReadWriteContext &	context
	)

static

Creates a renderer from an XML element.

Caller takes ownership of the returned renderer.

See also: save()

Definition at line 75 of file qgstiledscenerenderer.cpp.

◆ maximumScreenError()

double QgsTiledSceneRenderer::maximumScreenError ( ) const

Returns the maximum screen error allowed when rendering the tiled scene.

Larger values result in a faster render with less detailed features rendered.

Units are retrieved via maximumScreenErrorUnit().

See also: setMaximumScreenError(); maximumScreenErrorUnit()

Definition at line 112 of file qgstiledscenerenderer.cpp.

◆ maximumScreenErrorUnit()

Qgis::RenderUnit QgsTiledSceneRenderer::maximumScreenErrorUnit ( ) const

Returns the unit for the maximum screen error allowed when rendering the tiled scene.

See also: maximumScreenError(); setMaximumScreenErrorUnit()

Definition at line 122 of file qgstiledscenerenderer.cpp.

◆ operator=()

QgsTiledSceneRenderer & QgsTiledSceneRenderer::operator= ( const QgsTiledSceneRenderer & other )

delete

QgsTiledSceneRenderer cannot be copied – use clone() instead.

◆ renderLine()

virtual void QgsTiledSceneRenderer::renderLine	(	QgsTiledSceneRenderContext &	context,
		const QPolygonF &	line
	)

pure virtual

Renders a line.

Implemented in QgsTiledSceneTextureRenderer, and QgsTiledSceneWireframeRenderer.

◆ renderTriangle()

virtual void QgsTiledSceneRenderer::renderTriangle	(	QgsTiledSceneRenderContext &	context,
		const QPolygonF &	triangle
	)

pure virtual

Renders a triangle.

Implemented in QgsTiledSceneTextureRenderer, and QgsTiledSceneWireframeRenderer.

◆ restoreCommonProperties()

void QgsTiledSceneRenderer::restoreCommonProperties	(	const QDomElement &	element,
		const QgsReadWriteContext &	context
	)

protected

Restores common renderer properties (such as screen error) from the specified DOM element.

See also: saveCommonProperties()

Definition at line 149 of file qgstiledscenerenderer.cpp.

◆ save()

virtual QDomElement QgsTiledSceneRenderer::save	(	QDomDocument &	doc,
		const QgsReadWriteContext &	context
	)		const

pure virtual

Saves the renderer configuration to an XML element.

See also: load()

Implemented in QgsTiledSceneTextureRenderer, and QgsTiledSceneWireframeRenderer.

◆ saveCommonProperties()

void QgsTiledSceneRenderer::saveCommonProperties	(	QDomElement &	element,
		const QgsReadWriteContext &	context
	)		const

protected

Saves common renderer properties (such as point size and screen error) to the specified DOM element.

See also: restoreCommonProperties()

Definition at line 156 of file qgstiledscenerenderer.cpp.

◆ setMaximumScreenError()

void QgsTiledSceneRenderer::setMaximumScreenError ( double error )

Sets the maximum screen error allowed when rendering the tiled scene.

Larger values result in a faster render with less detailed features rendered.

Units are set via setMaximumScreenErrorUnit().

See also: maximumScreenError(); setMaximumScreenErrorUnit()

Definition at line 117 of file qgstiledscenerenderer.cpp.

◆ setMaximumScreenErrorUnit()

void QgsTiledSceneRenderer::setMaximumScreenErrorUnit ( Qgis::RenderUnit unit )

Sets the unit for the maximum screen error allowed when rendering the tiled scene.

See also: setMaximumScreenError(); maximumScreenErrorUnit()

Definition at line 127 of file qgstiledscenerenderer.cpp.

◆ setTileBorderRenderingEnabled()

void QgsTiledSceneRenderer::setTileBorderRenderingEnabled ( bool enabled )

inline

Sets whether to render the borders of tiles.

See also: isTileBorderRenderingEnabled()

Definition at line 224 of file qgstiledscenerenderer.h.

◆ startRender()

void QgsTiledSceneRenderer::startRender ( QgsTiledSceneRenderContext & context )

virtual

Must be called when a new render cycle is started.

A call to startRender() must always be followed by a corresponding call to stopRender() after all features have been rendered.

See also: stopRender()

Warning: This method is not thread safe. Before calling startRender() in a non-main thread, the renderer should instead be cloned and startRender()/stopRender() called on the clone.

Reimplemented in QgsTiledSceneTextureRenderer, and QgsTiledSceneWireframeRenderer.

Definition at line 91 of file qgstiledscenerenderer.cpp.

◆ stopRender()

void QgsTiledSceneRenderer::stopRender ( QgsTiledSceneRenderContext & context )

virtual

Must be called when a render cycle has finished, to allow the renderer to clean up.

Calls to stopRender() must always be preceded by a call to startRender().

Warning: This method is not thread safe. Before calling startRender() in a non-main thread, the renderer should instead be cloned and startRender()/stopRender() called on the clone.

See also: startRender()

Reimplemented in QgsTiledSceneTextureRenderer, and QgsTiledSceneWireframeRenderer.

Definition at line 105 of file qgstiledscenerenderer.cpp.

◆ type()

virtual QString QgsTiledSceneRenderer::type ( ) const

pure virtual

Returns the identifier of the renderer type.

Implemented in QgsTiledSceneTextureRenderer, and QgsTiledSceneWireframeRenderer.

The documentation for this class was generated from the following files:

/build/qgis-3.41.0+git20241119+45a0abf3bec+99sid/src/core/tiledscene/qgstiledscenerenderer.h
/build/qgis-3.41.0+git20241119+45a0abf3bec+99sid/src/core/tiledscene/qgstiledscenerenderer.cpp

Public Member Functions

Static Public Member Functions

Protected Member Functions

Detailed Description

Constructor & Destructor Documentation

◆ QgsTiledSceneRenderer() [1/2]

◆ ~QgsTiledSceneRenderer()

◆ QgsTiledSceneRenderer() [2/2]

Member Function Documentation

◆ clone()

◆ copyCommonProperties()

◆ createLegendNodes()

◆ flags()

◆ isTileBorderRenderingEnabled()

◆ legendRuleKeys()

◆ load()

◆ maximumScreenError()

◆ maximumScreenErrorUnit()

◆ operator=()

◆ renderLine()

◆ renderTriangle()

◆ restoreCommonProperties()

◆ save()

◆ saveCommonProperties()

◆ setMaximumScreenError()

◆ setMaximumScreenErrorUnit()

◆ setTileBorderRenderingEnabled()

◆ startRender()

◆ stopRender()

◆ type()