Qt Documentation

QLayer Class

(Qt3DRender::QLayer)

The QLayer class provides a way of filtering which entities will be rendered. More...

Header:	#include <QLayer>
qmake:	QT += 3drender
Since:	Qt 5.5
Instantiated By:	Layer
Inherits:	Qt3DCore::QComponent

Properties

recursive : bool

1 property inherited from Qt3DCore::QComponent
3 properties inherited from Qt3DCore::QNode
1 property inherited from QObject

Public Functions

	QLayer(Qt3DCore::QNode *parent = nullptr)
bool	recursive() const
void	setRecursive(bool recursive)

2 public functions inherited from Qt3DCore::QComponent
13 public functions inherited from Qt3DCore::QNode
31 public functions inherited from QObject

Signals

void	recursiveChanged()

3 signals inherited from Qt3DCore::QComponent
4 signals inherited from Qt3DCore::QNode
2 signals inherited from QObject

Static Public Members

const QMetaObject staticMetaObject

9 static public members inherited from QObject

Additional Inherited Members

1 public slot inherited from Qt3DCore::QComponent
3 public slots inherited from Qt3DCore::QNode
1 public slot inherited from QObject
2 protected functions inherited from Qt3DCore::QNode
9 protected functions inherited from QObject

Detailed Description

The QLayer class provides a way of filtering which entities will be rendered.

Qt3DRender::QLayer works in conjunction with the Qt3DRender::QLayerFilter in the FrameGraph.

A QLayer can be applied to a subtree of entities by setting the recursive property to true.

 #include <Qt3DCore/QEntity>
 #include <Qt3DRender/QGeometryRenderer>
 #include <Qt3DRender/QLayer>
 #include <Qt3DRender/QLayerFilter>
 #include <Qt3DRender/QViewport>

// Scene
Qt3DCore::QEntity *rootEntity = new Qt3DCore::Qt3DCore::QEntity;

Qt3DCore::QEntity *renderableEntity = new Qt3DCore::Qt3DCore::QEntity(rootEntity);
Qt3DRender::QGeometryRenderer *geometryRenderer = new Qt3DCore::QGeometryRenderer(renderableEntity);
Qt3DRender::QLayer *layer1 = new Qt3DCore::QLayer(renderableEntity);
layer1->setRecursive(true);
renderableEntity->addComponent(geometryRenderer);
renderableEntity->addComponent(layer1);

...

// FrameGraph
Qt3DRender::QViewport *viewport = new Qt3DRender::QViewport;
Qt3DRender::QLayerFilter *layerFilter = new Qt3DRender::QLayerFilter(viewport);
layerFilter->addLayer(layer1);

...

See also Qt3DRender::QLayerFilter.

Property Documentation

recursive : bool

Specifies if the layer is also applied to the entity subtree.

Access functions:

bool	recursive() const
void	setRecursive(bool recursive)

Notifier signal:

void	recursiveChanged()

Member Function Documentation

QLayer::QLayer(Qt3DCore::QNode **parent* = nullptr)

Constructs a new QLayer with the specified parent.

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