Qt3DRender.QAbstractRayCaster ¶

概要 ¶

详细描述 ¶

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.

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.

注意

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

另请参阅

QRayCaster QScreenRayCaster QObjectPicker QPickingSettings QNoPicking

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

参数

parent – QNode

PySide2.Qt3DRender.Qt3DRender.QAbstractRayCaster. RunMode ¶

This enumeration specifies how often ray casting is performed

常量	描述
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.

常量	描述
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 ) ¶

参数

layer – QLayer

Add layer to the current list of layers

PySide2.Qt3DRender.Qt3DRender.QAbstractRayCaster. filterMode ( ) ¶

返回类型

FilterMode

另请参阅

setFilterMode()

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

参数

filterMode – FilterMode

PySide2.Qt3DRender.Qt3DRender.QAbstractRayCaster. hits ( ) ¶

返回类型

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

参数

hits –

PySide2.Qt3DRender.Qt3DRender.QAbstractRayCaster. layers ( ) ¶

返回类型

Returns the current list of layers

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

参数

layer – QLayer

移除 layer from the current list of layers

PySide2.Qt3DRender.Qt3DRender.QAbstractRayCaster. runMode ( ) ¶

返回类型

RunMode

另请参阅

setRunMode()

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

参数

runMode – RunMode

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

参数

filterMode – FilterMode

另请参阅

filterMode()

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

参数

runMode – RunMode

另请参阅

runMode()