QGIS API Documentation 3.34.0-Prizren (ffbdd678812)
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Public Types | Public Slots | Signals | Public Member Functions | Static Public Member Functions | Static Public Attributes | List of all members
Qgs3DMapScene Class Reference

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#include <qgs3dmapscene.h>

Inheritance diagram for Qgs3DMapScene:
Inheritance graph
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Public Types

enum  SceneState { Ready , Updating }
 Enumeration of possible states of the 3D scene. More...
 

Public Slots

void updateTemporal ()
 Updates the temporale entities.
 

Signals

void fpsCountChanged (float fpsCount)
 Emitted when the FPS count changes.
 
void fpsCounterEnabledChanged (bool fpsCounterEnabled)
 Emitted when the FPS counter is activated or deactivated.
 
void gpuMemoryLimitReached ()
 Emitted when one of the entities reaches its GPU memory limit and it is not possible to lower the GPU memory use by unloading data that's not currently needed.
 
void sceneStateChanged ()
 Emitted when the scene's state has changed.
 
void terrainEntityChanged ()
 Emitted when the current terrain entity is replaced by a new one.
 
void terrainPendingJobsCountChanged ()
 Emitted when the number of terrain's pending jobs changes.
 
void totalPendingJobsCountChanged ()
 Emitted when the total number of pending jobs changes.
 
void viewed2DExtentFrom3DChanged (QVector< QgsPointXY > extent)
 Emitted when the viewed 2D extent seen by the 3D camera has changed.
 

Public Member Functions

 Qgs3DMapScene (Qgs3DMapSettings &map, QgsAbstract3DEngine *engine)
 Constructs a 3D scene based on map settings and Qt 3D renderer configuration.
 
QgsCameraControllercameraController ()
 Returns camera controller.
 
QgsDoubleRange elevationRange () const
 Returns the scene's elevation range.
 
QgsAbstract3DEngineengine ()
 Returns the abstract 3D engine.
 
void exportScene (const Qgs3DMapExportSettings &exportSettings)
 Exports the scene according to the scene export settings.
 
Qgs3DAxisget3DAxis ()
 Returns the 3D axis object.
 
QVector< const QgsChunkNode * > getLayerActiveChunkNodes (QgsMapLayer *layer)
 Returns the active chunk nodes of layer.
 
Qt3DCore::QEntity * layerEntity (QgsMapLayer *layer) const
 Returns the entity belonging to layer.
 
QList< QgsMapLayer * > layers ()
 Returns the layers that contain chunked entities.
 
Qgs3DMapSettingsmapSettings () const
 Returns the 3D map settings.
 
QgsRectangle sceneExtent ()
 Returns the scene extent in the map's CRS.
 
SceneState sceneState () const
 Returns the current state of the scene.
 
void setViewFrom2DExtent (const QgsRectangle &extent)
 Resets camera view to show the extent extent (top view)
 
QgsTerrainEntity * terrainEntity ()
 Returns terrain entity (may be temporarily nullptr)
 
int terrainPendingJobsCount () const
 Returns number of pending jobs of the terrain entity.
 
int totalPendingJobsCount () const
 Returns number of pending jobs for all chunked entities.
 
QVector< QgsPointXYviewFrustum2DExtent ()
 Calculates the 2D extent viewed by the 3D camera as the vertices of the viewed trapezoid.
 
void viewZoomFull ()
 Resets camera view to show the whole scene (top view)
 
float worldSpaceError (float epsilon, float distance)
 Given screen error (in pixels) and distance from camera (in 3D world coordinates), this function estimates the error in world space.
 

Static Public Member Functions

static QMap< QString, Qgs3DMapScene * > openScenes ()
 Returns a map of 3D map scenes (by name) open in the QGIS application.
 

Static Public Attributes

static std::function< QMap< QString, Qgs3DMapScene * >() > sOpenScenesFunction = [] { return QMap< QString, Qgs3DMapScene * >(); }
 Static function for returning open 3D map scenes.
 

Detailed Description

3

Entity that encapsulates our 3D scene - contains all other entities (such as terrain) as children.

Note
Not available in Python bindings
Since
QGIS 3.0

Definition at line 70 of file qgs3dmapscene.h.

Member Enumeration Documentation

◆ SceneState

Enumeration of possible states of the 3D scene.

Enumerator
Ready 

The scene is fully loaded/updated.

Updating 

The scene is still being loaded/updated.

Definition at line 118 of file qgs3dmapscene.h.

Constructor & Destructor Documentation

◆ Qgs3DMapScene()

Qgs3DMapScene::Qgs3DMapScene ( Qgs3DMapSettings map,
QgsAbstract3DEngine engine 
)

Constructs a 3D scene based on map settings and Qt 3D renderer configuration.

Definition at line 84 of file qgs3dmapscene.cpp.

Member Function Documentation

◆ cameraController()

QgsCameraController * Qgs3DMapScene::cameraController ( )
inline

Returns camera controller.

Definition at line 83 of file qgs3dmapscene.h.

◆ elevationRange()

QgsDoubleRange Qgs3DMapScene::elevationRange ( ) const

Returns the scene's elevation range.

Note
Only some layer types are considered by this method (eg terrain, point cloud and mesh layers)
Since
QGIS 3.30

Definition at line 1092 of file qgs3dmapscene.cpp.

◆ engine()

QgsAbstract3DEngine * Qgs3DMapScene::engine ( )
inline

Returns the abstract 3D engine.

Since
QGIS 3.26

Definition at line 184 of file qgs3dmapscene.h.

◆ exportScene()

void Qgs3DMapScene::exportScene ( const Qgs3DMapExportSettings exportSettings)

Exports the scene according to the scene export settings.

Definition at line 1024 of file qgs3dmapscene.cpp.

◆ fpsCountChanged

void Qgs3DMapScene::fpsCountChanged ( float  fpsCount)
signal

Emitted when the FPS count changes.

◆ fpsCounterEnabledChanged

void Qgs3DMapScene::fpsCounterEnabledChanged ( bool  fpsCounterEnabled)
signal

Emitted when the FPS counter is activated or deactivated.

◆ get3DAxis()

Qgs3DAxis * Qgs3DMapScene::get3DAxis ( )
inline

Returns the 3D axis object.

Since
QGIS 3.26

Definition at line 177 of file qgs3dmapscene.h.

◆ getLayerActiveChunkNodes()

QVector< const QgsChunkNode * > Qgs3DMapScene::getLayerActiveChunkNodes ( QgsMapLayer layer)

Returns the active chunk nodes of layer.

Since
QGIS 3.18

Definition at line 1074 of file qgs3dmapscene.cpp.

◆ gpuMemoryLimitReached

void Qgs3DMapScene::gpuMemoryLimitReached ( )
signal

Emitted when one of the entities reaches its GPU memory limit and it is not possible to lower the GPU memory use by unloading data that's not currently needed.

◆ layerEntity()

Qt3DCore::QEntity * Qgs3DMapScene::layerEntity ( QgsMapLayer layer) const
inline

Returns the entity belonging to layer.

Since
QGIS 3.32

Definition at line 155 of file qgs3dmapscene.h.

◆ layers()

QList< QgsMapLayer * > Qgs3DMapScene::layers ( )
inline

Returns the layers that contain chunked entities.

Since
QGIS 3.32

Definition at line 148 of file qgs3dmapscene.h.

◆ mapSettings()

Qgs3DMapSettings * Qgs3DMapScene::mapSettings ( ) const
inline

Returns the 3D map settings.

Since
QGIS 3.30

Definition at line 191 of file qgs3dmapscene.h.

◆ openScenes()

QMap< QString, Qgs3DMapScene * > Qgs3DMapScene::openScenes ( )
static

Returns a map of 3D map scenes (by name) open in the QGIS application.

Note
Only available from the QGIS desktop application.
Since
QGIS 3.30

Definition at line 1156 of file qgs3dmapscene.cpp.

◆ sceneExtent()

QgsRectangle Qgs3DMapScene::sceneExtent ( )

Returns the scene extent in the map's CRS.

Since
QGIS 3.20

Definition at line 1087 of file qgs3dmapscene.cpp.

◆ sceneState()

SceneState Qgs3DMapScene::sceneState ( ) const
inline

Returns the current state of the scene.

Definition at line 125 of file qgs3dmapscene.h.

◆ sceneStateChanged

void Qgs3DMapScene::sceneStateChanged ( )
signal

Emitted when the scene's state has changed.

◆ setViewFrom2DExtent()

void Qgs3DMapScene::setViewFrom2DExtent ( const QgsRectangle extent)

Resets camera view to show the extent extent (top view)

Since
QGIS 3.26

Definition at line 215 of file qgs3dmapscene.cpp.

◆ terrainEntity()

QgsTerrainEntity * Qgs3DMapScene::terrainEntity ( )
inline

Returns terrain entity (may be temporarily nullptr)

Note
Not available in Python bindings

Definition at line 89 of file qgs3dmapscene.h.

◆ terrainEntityChanged

void Qgs3DMapScene::terrainEntityChanged ( )
signal

Emitted when the current terrain entity is replaced by a new one.

◆ terrainPendingJobsCount()

int Qgs3DMapScene::terrainPendingJobsCount ( ) const

Returns number of pending jobs of the terrain entity.

Definition at line 268 of file qgs3dmapscene.cpp.

◆ terrainPendingJobsCountChanged

void Qgs3DMapScene::terrainPendingJobsCountChanged ( )
signal

Emitted when the number of terrain's pending jobs changes.

◆ totalPendingJobsCount()

int Qgs3DMapScene::totalPendingJobsCount ( ) const

Returns number of pending jobs for all chunked entities.

Since
QGIS 3.12

Definition at line 273 of file qgs3dmapscene.cpp.

◆ totalPendingJobsCountChanged

void Qgs3DMapScene::totalPendingJobsCountChanged ( )
signal

Emitted when the total number of pending jobs changes.

Since
QGIS 3.12

◆ updateTemporal

void Qgs3DMapScene::updateTemporal ( )
slot

Updates the temporale entities.

Definition at line 612 of file qgs3dmapscene.cpp.

◆ viewed2DExtentFrom3DChanged

void Qgs3DMapScene::viewed2DExtentFrom3DChanged ( QVector< QgsPointXY extent)
signal

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

Since
QGIS 3.26

◆ viewFrustum2DExtent()

QVector< QgsPointXY > Qgs3DMapScene::viewFrustum2DExtent ( )

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

Since
QGIS 3.26

Definition at line 238 of file qgs3dmapscene.cpp.

◆ viewZoomFull()

void Qgs3DMapScene::viewZoomFull ( )

Resets camera view to show the whole scene (top view)

Definition at line 204 of file qgs3dmapscene.cpp.

◆ worldSpaceError()

float Qgs3DMapScene::worldSpaceError ( float  epsilon,
float  distance 
)

Given screen error (in pixels) and distance from camera (in 3D world coordinates), this function estimates the error in world space.

Takes into account camera's field of view and the screen (3D view) size.

Definition at line 281 of file qgs3dmapscene.cpp.

Member Data Documentation

◆ sOpenScenesFunction

std::function< QMap< QString, Qgs3DMapScene * >() > Qgs3DMapScene::sOpenScenesFunction = [] { return QMap< QString, Qgs3DMapScene * >(); }
static

Static function for returning open 3D map scenes.

Definition at line 82 of file qgs3dmapscene.h.


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