Renders point clouds by a classification attribute. More...

#include <qgspointcloudclassifiedrenderer.h>

Inheritance diagram for QgsPointCloudClassifiedRenderer:

Public Member Functions
	QgsPointCloudClassifiedRenderer (const QString &attributeName=QString(), const QgsPointCloudCategoryList &categories=QgsPointCloudCategoryList())
	Constructor for QgsPointCloudClassifiedRenderer.

void	addCategory (const QgsPointCloudCategory &category)
	Adds a category to the renderer.

QString	attribute () const
	Returns the attribute to use for the renderer.

QgsPointCloudCategoryList	categories () const
	Returns the classification categories used for rendering.

void	checkLegendItem (const QString &key, bool state=true) override
	Called when the check state of the legend item with the specified key is changed.

QgsPointCloudRenderer *	clone () const override
	Create a deep copy of this renderer.

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

bool	legendItemChecked (const QString &key) override
	Returns `true` if the legend item with the specified key is checked.

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

std::unique_ptr< QgsPreparedPointCloudRendererData >	prepare () override
	Returns prepared data container for bulk point color retrieval.

void	renderBlock (const QgsPointCloudBlock *block, QgsPointCloudRenderContext &context) override
	Renders a block of point cloud data using the specified render context.

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

void	setAttribute (const QString &attribute)
	Sets the attribute to use for the renderer.

void	setCategories (const QgsPointCloudCategoryList &categories)
	Sets the classification categories used for rendering.

QString	type () const override
	Returns the identifier of the renderer type.

QSet< QString >	usedAttributes (const QgsPointCloudRenderContext &context) const override
	Returns a list of attributes required by this renderer.

bool	willRenderPoint (const QVariantMap &pointAttributes) override

Public Member Functions inherited from QgsPointCloudRenderer
	QgsPointCloudRenderer ()=default

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

virtual	~QgsPointCloudRenderer ()=default

Qgis::PointCloudDrawOrder	drawOrder2d () const
	Returns the drawing order used by the renderer for drawing points.

bool	horizontalTriangleFilter () const
	Returns whether large triangles will get rendered.

double	horizontalTriangleFilterThreshold () const
	Returns threshold for filtering of triangles.

Qgis::RenderUnit	horizontalTriangleFilterUnit () const
	Returns units of the threshold for filtering of triangles.

QVector< QVariantMap >	identify (QgsPointCloudLayer *layer, const QgsRenderContext &context, const QgsGeometry &geometry, double toleranceForPointIdentification=0)
	Returns the list of visible points of the point cloud layer layer and an extent defined by a geometry in the 2D plane geometry.

double	maximumScreenError () const
	Returns the maximum screen error allowed when rendering the point cloud.

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

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

double	pointSize () const
	Returns the point size.

const QgsMapUnitScale &	pointSizeMapUnitScale () const
	Returns the map unit scale used for the point size.

Qgis::RenderUnit	pointSizeUnit () const
	Returns the units used for the point size.

Qgis::PointCloudSymbol	pointSymbol () const
	Returns the symbol used by the renderer for drawing points.

bool	renderAsTriangles () const
	Returns whether points are triangulated to render solid surface.

void	setDrawOrder2d (Qgis::PointCloudDrawOrder order)
	Sets the drawing order used by the renderer for drawing points.

void	setHorizontalTriangleFilter (bool enabled)
	Sets whether large triangles will get rendered.

void	setHorizontalTriangleFilterThreshold (double threshold)
	Sets threshold for filtering of triangles.

void	setHorizontalTriangleFilterUnit (Qgis::RenderUnit unit)
	Sets units of the threshold for filtering of triangles.

void	setMaximumScreenError (double error)
	Sets the maximum screen error allowed when rendering the point cloud.

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

void	setPointSize (double size)
	Sets the point size.

void	setPointSizeMapUnitScale (const QgsMapUnitScale &scale)
	Sets the map unit scale used for the point size.

void	setPointSizeUnit (const Qgis::RenderUnit units)
	Sets the units used for the point size.

void	setPointSymbol (Qgis::PointCloudSymbol symbol)
	Sets the symbol used by the renderer for drawing points.

void	setRenderAsTriangles (bool asTriangles)
	Sets whether points are triangulated to render solid surface.

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

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

virtual bool	willRenderPoint (const QMap< QString, QVariant > &pointAttributes)
	Checks whether the point holding pointAttributes attributes will be rendered By default if not overridden in the subclass renderer will return true ( the renderer is responsible for the filtering behavior )

Static Public Member Functions
static QgsPointCloudRenderer *	create (QDomElement &element, const QgsReadWriteContext &context)
	Creates an RGB renderer from an XML element.

static QgsPointCloudCategoryList	defaultCategories ()
	Returns the default list of categories.

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

Additional Inherited Members
Protected Member Functions inherited from QgsPointCloudRenderer
void	addPointToTriangulation (double x, double y, double z, const QColor &color, QgsPointCloudRenderContext &context)
	Adds a point to the list of points to be triangulated (only used when renderAsTriangles() is enabled)

void	copyCommonProperties (QgsPointCloudRenderer *destination) const
	Copies common point cloud properties (such as point size and screen error) to the destination renderer.

void	drawPoint (double x, double y, const QColor &color, int width, QgsPointCloudRenderContext &context) const
	Draws a point using a color and painter width at the specified x and y (in map coordinates).

void	drawPoint (double x, double y, const QColor &color, QgsPointCloudRenderContext &context) const
	Draws a point using a color at the specified x and y (in map coordinates).

void	drawPointToElevationMap (double x, double y, double z, int width, QgsPointCloudRenderContext &context) const
	Draws a point at the elevation z using at the specified x and y (in map coordinates) and painter width on the elevation map.

void	drawPointToElevationMap (double x, double y, double z, QgsPointCloudRenderContext &context) const
	Draws a point at the elevation z using at the specified x and y (in map coordinates) on the elevation map.

void	restoreCommonProperties (const QDomElement &element, const QgsReadWriteContext &context)
	Restores common renderer properties (such as point size and 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.

Static Protected Member Functions inherited from QgsPointCloudRenderer
static void	pointXY (QgsPointCloudRenderContext &context, const char *ptr, int i, double &x, double &y)
	Retrieves the x and y coordinate for the point at index i.

static double	pointZ (QgsPointCloudRenderContext &context, const char *ptr, int i)
	Retrieves the z value for the point at index i.

Detailed Description

Renders point clouds by a classification attribute.

Since: QGIS 3.18

Definition at line 164 of file qgspointcloudclassifiedrenderer.h.

Constructor & Destructor Documentation

◆ QgsPointCloudClassifiedRenderer()

QgsPointCloudClassifiedRenderer::QgsPointCloudClassifiedRenderer	(	const QString &	attributeName = `QString()`,
		const QgsPointCloudCategoryList &	categories = `QgsPointCloudCategoryList()`
	)

Constructor for QgsPointCloudClassifiedRenderer.

Definition at line 48 of file qgspointcloudclassifiedrenderer.cpp.

Member Function Documentation

◆ addCategory()

void QgsPointCloudClassifiedRenderer::addCategory ( const QgsPointCloudCategory & category )

Adds a category to the renderer.

See also: categories()

Definition at line 349 of file qgspointcloudclassifiedrenderer.cpp.

◆ attribute()

QString QgsPointCloudClassifiedRenderer::attribute ( ) const

Returns the attribute to use for the renderer.

See also: setAttribute()

Definition at line 329 of file qgspointcloudclassifiedrenderer.cpp.

◆ categories()

QgsPointCloudCategoryList QgsPointCloudClassifiedRenderer::categories ( ) const

Returns the classification categories used for rendering.

See also: setCategories()

Definition at line 339 of file qgspointcloudclassifiedrenderer.cpp.

◆ checkLegendItem()

void QgsPointCloudClassifiedRenderer::checkLegendItem	(	const QString &	key,
		bool	state = `true`
	)

overridevirtual

Called when the check state of the legend item with the specified key is changed.

See also: legendItemChecked()

Reimplemented from QgsPointCloudRenderer.

Definition at line 312 of file qgspointcloudclassifiedrenderer.cpp.

◆ clone()

QgsPointCloudRenderer * QgsPointCloudClassifiedRenderer::clone ( ) const

overridevirtual

Create a deep copy of this renderer.

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

Implements QgsPointCloudRenderer.

Definition at line 59 of file qgspointcloudclassifiedrenderer.cpp.

◆ create()

QgsPointCloudRenderer * QgsPointCloudClassifiedRenderer::create	(	QDomElement &	element,
		const QgsReadWriteContext &	context
	)

static

Creates an RGB renderer from an XML element.

Definition at line 187 of file qgspointcloudclassifiedrenderer.cpp.

◆ createLegendNodes()

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

overridevirtual

Creates a set of legend nodes representing the renderer.

Reimplemented from QgsPointCloudRenderer.

Definition at line 275 of file qgspointcloudclassifiedrenderer.cpp.

◆ defaultCategories()

QgsPointCloudCategoryList QgsPointCloudClassifiedRenderer::defaultCategories ( )

static

Returns the default list of categories.

Definition at line 219 of file qgspointcloudclassifiedrenderer.cpp.

◆ legendItemChecked()

bool QgsPointCloudClassifiedRenderer::legendItemChecked ( const QString & key )

overridevirtual

Returns true if the legend item with the specified key is checked.

See also: checkLegendItem()

Reimplemented from QgsPointCloudRenderer.

Definition at line 297 of file qgspointcloudclassifiedrenderer.cpp.

◆ legendRuleKeys()

QStringList QgsPointCloudClassifiedRenderer::legendRuleKeys ( ) const

overridevirtual

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

Reimplemented from QgsPointCloudRenderer.

Definition at line 287 of file qgspointcloudclassifiedrenderer.cpp.

◆ prepare()

std::unique_ptr< QgsPreparedPointCloudRendererData > QgsPointCloudClassifiedRenderer::prepare ( )

overridevirtual

Returns prepared data container for bulk point color retrieval.

Note: Not available in Python bindings.

Since: QGIS 3.26

Reimplemented from QgsPointCloudRenderer.

Definition at line 354 of file qgspointcloudclassifiedrenderer.cpp.

◆ renderBlock()

void QgsPointCloudClassifiedRenderer::renderBlock	(	const QgsPointCloudBlock *	block,
		QgsPointCloudRenderContext &	context
	)

overridevirtual

Renders a block of point cloud data using the specified render context.

Implements QgsPointCloudRenderer.

Definition at line 70 of file qgspointcloudclassifiedrenderer.cpp.

◆ save()

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

overridevirtual

Saves the renderer configuration to an XML element.

See also: load()

Implements QgsPointCloudRenderer.

Definition at line 242 of file qgspointcloudclassifiedrenderer.cpp.

◆ setAttribute()

void QgsPointCloudClassifiedRenderer::setAttribute ( const QString & attribute )

Sets the attribute to use for the renderer.

See also: attribute()

Definition at line 334 of file qgspointcloudclassifiedrenderer.cpp.

◆ setCategories()

void QgsPointCloudClassifiedRenderer::setCategories ( const QgsPointCloudCategoryList & categories )

Sets the classification categories used for rendering.

See also: categories()

Definition at line 344 of file qgspointcloudclassifiedrenderer.cpp.

◆ type()

QString QgsPointCloudClassifiedRenderer::type ( ) const

overridevirtual

Returns the identifier of the renderer type.

Implements QgsPointCloudRenderer.

Definition at line 54 of file qgspointcloudclassifiedrenderer.cpp.

◆ usedAttributes()

QSet< QString > QgsPointCloudClassifiedRenderer::usedAttributes ( const QgsPointCloudRenderContext & context ) const

overridevirtual

Returns a list of attributes required by this renderer.

Attributes not listed in here may not be requested from the provider at rendering time.

Note: the "X" and "Y" attributes will always be fetched and do not need to be explicitly returned here.

Reimplemented from QgsPointCloudRenderer.

Definition at line 268 of file qgspointcloudclassifiedrenderer.cpp.

◆ willRenderPoint()

bool QgsPointCloudClassifiedRenderer::willRenderPoint ( const QVariantMap & pointAttributes )

override

Definition at line 171 of file qgspointcloudclassifiedrenderer.cpp.

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

/build/qgis-3.41.0+git20241110+fda2aa46e9a+99sid/src/core/pointcloud/qgspointcloudclassifiedrenderer.h
/build/qgis-3.41.0+git20241110+fda2aa46e9a+99sid/src/core/pointcloud/qgspointcloudclassifiedrenderer.cpp

Public Member Functions

Static Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ QgsPointCloudClassifiedRenderer()

Member Function Documentation

◆ addCategory()

◆ attribute()

◆ categories()

◆ checkLegendItem()

◆ clone()

◆ create()

◆ createLegendNodes()

◆ defaultCategories()

◆ legendItemChecked()

◆ legendRuleKeys()

◆ prepare()

◆ renderBlock()

◆ save()

◆ setAttribute()

◆ setCategories()

◆ type()

◆ usedAttributes()

◆ willRenderPoint()