Qgs3DMapCanvas Class Reference

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#include <qgs3dmapcanvas.h>

Inheritance diagram for Qgs3DMapCanvas:

Signals
void	cameraNavigationSpeedChanged (double speed)
	Emitted when the camera navigation speed is changed.
void	fpsCountChanged (float fpsCount)
	Emitted when the FPS count changes (at most every frame)
void	fpsCounterEnabledChanged (bool enabled)
	Emitted when the FPS counter is enabled or disabeld.
void	mapSettingsChanged ()
	Emitted when the the map setting is changed.
void	savedAsImage (const QString &fileName)
	Emitted when the 3D map canvas was successfully saved as image.
void	viewed2DExtentFrom3DChanged (QVector< QgsPointXY > extent)
	Emitted when the viewed 2D extent seen by the 3D camera has changed.

Public Member Functions
	Qgs3DMapCanvas ()
	~Qgs3DMapCanvas ()
Qt3DRender::QFrameGraphNode *	activeFrameGraph () const
	Returns the node of the active frame graph.
Qt3DRender::QCamera *	camera () const
	Returns the default camera of the 3D Window.
QgsCameraController *	cameraController ()
	Returns access to the view's camera controller. Returns nullptr if the scene has not been initialized yet with setMapSettings()
QgsWindow3DEngine *	engine () const
	Returns the 3D engine.
Qgs3DMapSettings *	mapSettings ()
	Returns access to the 3D scene configuration.
Qgs3DMapTool *	mapTool () const
	Returns the active map tool that will receive events from the 3D canvas.
Qt3DRender::QRenderSettings *	renderSettings () const
	Returns the render settings of the 3D Window.
void	resetView ()
	Resets camera position to the default: looking down at the origin of world coordinates.
void	saveAsImage (const QString &fileName, const QString &fileFormat)
	Saves the current scene as an image.
Qgs3DMapScene *	scene ()
	Returns access to the 3D scene (root 3D entity)
void	setActiveFrameGraph (Qt3DRender::QFrameGraphNode *activeFrameGraph)
	Activates the specified activeFrameGraph.
void	setMapSettings (Qgs3DMapSettings *mapSettings)
	Configure map scene being displayed. Takes ownership.
void	setMapTool (Qgs3DMapTool *tool)
	Sets the active map tool that will receive events from the 3D canvas.
void	setRootEntity (Qt3DCore::QEntity *root)
	Sets the specified root entity of the scene.
void	setTemporalController (QgsTemporalController *temporalController)
	Sets the temporal controller.
void	setViewFrom2DExtent (const QgsRectangle &extent)
	Resets camera view to show the extent (top view)
void	setViewFromTop (const QgsPointXY &center, float distance, float rotation=0)
	Sets camera position to look down at the given point (in map coordinates) in given distance from plane with zero elevation.
QVector< QgsPointXY >	viewFrustum2DExtent ()
	Calculates the 2D extent viewed by the 3D camera as the vertices of the viewed trapezoid.

Protected Member Functions
bool	eventFilter (QObject *watched, QEvent *event) override
void	resizeEvent (QResizeEvent *) override
	Resets the aspect ratio of the 3D window.
void	showEvent (QShowEvent *e) override
	Manages the display events specified in e.

Detailed Description

3

Qgs3DMapCanvas is a convenience wrapper to simplify the creation of a 3D window ready to be used with QGIS.

Note

This is a port of qtwindow3d which does not set the default surface when initialized.

The default surface must be set before the construction of the QApplication when using shared OpenGL context.

This is required in order to use QT3d and QtWebEngine at the same time.

Since

QGIS 3.36

Definition at line 79 of file qgs3dmapcanvas.h.

Constructor & Destructor Documentation

Qgs3DMapCanvas()

Qgs3DMapCanvas::Qgs3DMapCanvas

(

)

Definition at line 39 of file qgs3dmapcanvas.cpp.

~Qgs3DMapCanvas()

Qgs3DMapCanvas::~Qgs3DMapCanvas

(

)

Definition at line 78 of file qgs3dmapcanvas.cpp.

Member Function Documentation

activeFrameGraph()

Qt3DRender::QFrameGraphNode * Qgs3DMapCanvas::activeFrameGraph

(

)

const

Returns the node of the active frame graph.

Definition at line 109 of file qgs3dmapcanvas.cpp.

camera()

Qt3DRender::QCamera * Qgs3DMapCanvas::camera

(

)

const

Returns the default camera of the 3D Window.

Definition at line 114 of file qgs3dmapcanvas.cpp.

cameraController()

QgsCameraController * Qgs3DMapCanvas::cameraController

(

)

Returns access to the view's camera controller. Returns nullptr if the scene has not been initialized yet with setMapSettings()

Definition at line 183 of file qgs3dmapcanvas.cpp.

cameraNavigationSpeedChanged

void Qgs3DMapCanvas::cameraNavigationSpeedChanged ( double  speed )

signal

Emitted when the camera navigation speed is changed.

engine()

QgsWindow3DEngine * Qgs3DMapCanvas::engine ( ) const

inline

Returns the 3D engine.

Definition at line 150 of file qgs3dmapcanvas.h.

eventFilter()

bool Qgs3DMapCanvas::eventFilter ( QObject *  watched, QEvent *  event  )

overrideprotected

Definition at line 275 of file qgs3dmapcanvas.cpp.

fpsCountChanged

void Qgs3DMapCanvas::fpsCountChanged ( float  fpsCount )

signal

Emitted when the FPS count changes (at most every frame)

fpsCounterEnabledChanged

void Qgs3DMapCanvas::fpsCounterEnabledChanged ( bool  enabled )

signal

Emitted when the FPS counter is enabled or disabeld.

mapSettings()

Qgs3DMapSettings * Qgs3DMapCanvas::mapSettings ( )

inline

Returns access to the 3D scene configuration.

Definition at line 88 of file qgs3dmapcanvas.h.

mapSettingsChanged

void Qgs3DMapCanvas::mapSettingsChanged ( )

signal

Emitted when the the map setting is changed.

mapTool()

Qgs3DMapTool * Qgs3DMapCanvas::mapTool ( ) const

inline

Returns the active map tool that will receive events from the 3D canvas.

If the tool is nullptr, events will be used for camera manipulation.

Definition at line 145 of file qgs3dmapcanvas.h.

renderSettings()

Qt3DRender::QRenderSettings * Qgs3DMapCanvas::renderSettings

(

)

const

Returns the render settings of the 3D Window.

Definition at line 119 of file qgs3dmapcanvas.cpp.

resetView()

void Qgs3DMapCanvas::resetView

(

)

Resets camera position to the default: looking down at the origin of world coordinates.

Definition at line 188 of file qgs3dmapcanvas.cpp.

resizeEvent()

void Qgs3DMapCanvas::resizeEvent ( QResizeEvent *  )

overrideprotected

Resets the aspect ratio of the 3D window.

Definition at line 137 of file qgs3dmapcanvas.cpp.

saveAsImage()

void Qgs3DMapCanvas::saveAsImage	(	const QString &	fileName,
		const QString &	fileFormat
	)

Saves the current scene as an image.

Definition at line 206 of file qgs3dmapcanvas.cpp.

savedAsImage

void Qgs3DMapCanvas::savedAsImage ( const QString &  fileName )

signal

Emitted when the 3D map canvas was successfully saved as image.

scene()

Qgs3DMapScene * Qgs3DMapCanvas::scene ( )

inline

Returns access to the 3D scene (root 3D entity)

Definition at line 91 of file qgs3dmapcanvas.h.

setActiveFrameGraph()

void Qgs3DMapCanvas::setActiveFrameGraph

(

Qt3DRender::QFrameGraphNode *

activeFrameGraph

)

Activates the specified activeFrameGraph.

Definition at line 104 of file qgs3dmapcanvas.cpp.

setMapSettings()

void Qgs3DMapCanvas::setMapSettings

(

Qgs3DMapSettings *

mapSettings

)

Configure map scene being displayed. Takes ownership.

Definition at line 144 of file qgs3dmapcanvas.cpp.

setMapTool()

void Qgs3DMapCanvas::setMapTool

(

Qgs3DMapTool *

tool

)

Sets the active map tool that will receive events from the 3D canvas.

Does not transfer ownership. If the tool is nullptr, events will be used for camera manipulation.

Definition at line 243 of file qgs3dmapcanvas.cpp.

setRootEntity()

void Qgs3DMapCanvas::setRootEntity

(

Qt3DCore::QEntity *

root

)

Sets the specified root entity of the scene.

Definition at line 92 of file qgs3dmapcanvas.cpp.

setTemporalController()

void Qgs3DMapCanvas::setTemporalController

(

QgsTemporalController *

temporalController

)

Sets the temporal controller.

Definition at line 316 of file qgs3dmapcanvas.cpp.

setViewFrom2DExtent()

void Qgs3DMapCanvas::setViewFrom2DExtent

(

const QgsRectangle &

extent

)

Resets camera view to show the extent (top view)

Definition at line 339 of file qgs3dmapcanvas.cpp.

setViewFromTop()

void Qgs3DMapCanvas::setViewFromTop	(	const QgsPointXY &	center,
		float	distance,
		float	rotation = 0
	)

Sets camera position to look down at the given point (in map coordinates) in given distance from plane with zero elevation.

Definition at line 196 of file qgs3dmapcanvas.cpp.

showEvent()

void Qgs3DMapCanvas::showEvent ( QShowEvent *  e )

overrideprotected

Manages the display events specified in e.

Definition at line 124 of file qgs3dmapcanvas.cpp.

viewed2DExtentFrom3DChanged

void Qgs3DMapCanvas::viewed2DExtentFrom3DChanged ( QVector< QgsPointXY >  extent )

signal

Emitted when the viewed 2D extent seen by the 3D camera has changed.

viewFrustum2DExtent()

QVector< QgsPointXY > Qgs3DMapCanvas::viewFrustum2DExtent

(

)

Calculates the 2D extent viewed by the 3D camera as the vertices of the viewed trapezoid.

Definition at line 347 of file qgs3dmapcanvas.cpp.

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

• /build/qgis-3.41.0+git20241119+45a0abf3bec+99sid/src/3d/qgs3dmapcanvas.h
• /build/qgis-3.41.0+git20241119+45a0abf3bec+99sid/src/3d/qgs3dmapcanvas.cpp