QAbstractRayCaster

An abstract base class for ray casting in 3d scenes. More…

Inherited by: QRayCaster, QScreenRayCaster

New in version 5.11.

Synopsis

Functions

• def addLayer (layer)

• def filterMode ()

• def hits ()

• def layers ()

• def removeLayer (layer)

• def runMode ()

Slots

• def setFilterMode (filterMode)

• def setRunMode (runMode)

Signals

• def filterModeChanged (filterMode)

• def hitsChanged (hits)

• def runModeChanged (runMode)

Detailed Description

QAbstractRayCaster is an abstract base class for casting rays into a 3d scene. QAbstractRayCaster can not be directly instantiated, but rather through its subclasses. QAbstractRayCaster specifies common properties for all ray casters, such as run mode and layer handling, while leaving the actual ray casting details to the subclasses.

Ray castings differs from picking (using QObjectPicker ) in that it does not require mouse events to trigger.

By default, the instances of QAbstractRayCaster are disabled. When enabled, the specified ray will be tested for intersecting objects at every frame. The hits property will be updated with the results of the ray casting, even if no objects are found.

The QPickingSettings can be used to control the ray casting, such as which primitives are tested and how the results are returned.

Furthermore, QLayer components can be used to control how entities, or entity sub-graphs, react to ray casting.

Note

Components derived from QAbstractRayCaster should not be shared amount multiple entities.

See also

QRayCaster QScreenRayCaster QObjectPicker QPickingSettings QNoPicking

class PySide2.Qt3DRender.Qt3DRender.QAbstractRayCaster([parent=None])

Parameters:

parent – PySide2.Qt3DCore.Qt3DCore.QNode

PySide2.Qt3DRender.Qt3DRender.QAbstractRayCaster.RunMode

This enumeration specifies how often ray casting is performed

Constant	Description
Qt3DRender.QAbstractRayCaster.Continuous	Ray casting is performed at every frame as long as the component is enabled.
Qt3DRender.QAbstractRayCaster.SingleShot	Ray casting is done once then the component disables itself. This is the default

PySide2.Qt3DRender.Qt3DRender.QAbstractRayCaster.FilterMode

Specifies the rules for selecting entities to test for raycasting.

Constant	Description
Qt3DRender.QAbstractRayCaster.AcceptAnyMatchingLayers	Accept entities that reference one or more QLayer objects added to this QAbstractRayCaster . This is the default
Qt3DRender.QAbstractRayCaster.AcceptAllMatchingLayers	Accept entities that reference all the QLayer objects added to this QAbstractRayCaster
Qt3DRender.QAbstractRayCaster.DiscardAnyMatchingLayers	Discard entities that reference one or more QLayer objects added to this QAbstractRayCaster
Qt3DRender.QAbstractRayCaster.DiscardAllMatchingLayers	Discard entities that reference all QLayer objects added to this QAbstractRayCaster

PySide2.Qt3DRender.Qt3DRender.QAbstractRayCaster.addLayer(layer)

Parameters:

layer – PySide2.Qt3DRender.Qt3DRender.QLayer

Add layer to the current list of layers

PySide2.Qt3DRender.Qt3DRender.QAbstractRayCaster.filterMode()

Return type:

FilterMode

Holds the filter mode specifying the entities to select for ray casting tests.

The default value is AcceptMatchingLayers.

PySide2.Qt3DRender.Qt3DRender.QAbstractRayCaster.filterModeChanged(filterMode)

Parameters:

filterMode – FilterMode

PySide2.Qt3DRender.Qt3DRender.QAbstractRayCaster.hits()

Return type:

PySide2.Qt3DRender.Qt3DRender.QAbstractRayCaster.hitsChanged(hits)

Parameters:

hits –

PySide2.Qt3DRender.Qt3DRender.QAbstractRayCaster.layers()

Return type:

Returns the current list of layers

PySide2.Qt3DRender.Qt3DRender.QAbstractRayCaster.removeLayer(layer)

Parameters:

layer – PySide2.Qt3DRender.Qt3DRender.QLayer

Remove layer from the current list of layers

PySide2.Qt3DRender.Qt3DRender.QAbstractRayCaster.runMode()

Return type:

RunMode

Holds the run mode controlling how often ray casting tests are performed.

If set to SingleShot (the default), when the component is enabled, a single ray casting test will be performed and the component will automatically disable itself.

If set to Continuous, ray casting tests will be performed at every frame as long as the component is enabled.

PySide2.Qt3DRender.Qt3DRender.QAbstractRayCaster.runModeChanged(runMode)

Parameters:

runMode – RunMode

PySide2.Qt3DRender.Qt3DRender.QAbstractRayCaster.setFilterMode(filterMode)

Parameters:

filterMode – FilterMode

Holds the filter mode specifying the entities to select for ray casting tests.

The default value is AcceptMatchingLayers.

PySide2.Qt3DRender.Qt3DRender.QAbstractRayCaster.setRunMode(runMode)

Parameters:

runMode – RunMode

Holds the run mode controlling how often ray casting tests are performed.

If set to SingleShot (the default), when the component is enabled, a single ray casting test will be performed and the component will automatically disable itself.

If set to Continuous, ray casting tests will be performed at every frame as long as the component is enabled.