Qt3DRender.QSpotLight

Encapsulate a Spot Light object in a Qt 3D scene. More

Inheritance diagram of PySide2.Qt3DRender.Qt3DRender.QSpotLight

Synopsis

Slots

Signals

Detailed Description

A spotlight is a light source that emits a cone of light in a particular direction.

A spotlight uses three attenuation factors to describe how the intensity of the light decreases over distance. These factors are designed to be used together in calcuating total attenuation. For the materials in Qt3D Extras the following formula is used, where distance is the distance from the light to the surface being rendered:

totalAttenuation = 1.0 / (constantAttenuation + (linearAttenuation * distance) + (quadraticAttenuation * distance * distance));

Custom materials may choose to interpret these factors differently.

class PySide2.Qt3DRender.Qt3DRender.QSpotLight([parent=None])
param parent

QNode

Constructs a new QSpotLight with the specified parent .

PySide2.Qt3DRender.Qt3DRender.QSpotLight.constantAttenuation()
Return type

float

PySide2.Qt3DRender.Qt3DRender.QSpotLight.constantAttenuationChanged(constantAttenuation)
Parameters

constantAttenuationfloat

PySide2.Qt3DRender.Qt3DRender.QSpotLight.cutOffAngle()
Return type

float

See also

setCutOffAngle()

PySide2.Qt3DRender.Qt3DRender.QSpotLight.cutOffAngleChanged(cutOffAngle)
Parameters

cutOffAnglefloat

PySide2.Qt3DRender.Qt3DRender.QSpotLight.linearAttenuation()
Return type

float

PySide2.Qt3DRender.Qt3DRender.QSpotLight.linearAttenuationChanged(linearAttenuation)
Parameters

linearAttenuationfloat

PySide2.Qt3DRender.Qt3DRender.QSpotLight.localDirection()
Return type

QVector3D

PySide2.Qt3DRender.Qt3DRender.QSpotLight.localDirectionChanged(localDirection)
Parameters

localDirectionQVector3D

PySide2.Qt3DRender.Qt3DRender.QSpotLight.quadraticAttenuation()
Return type

float

PySide2.Qt3DRender.Qt3DRender.QSpotLight.quadraticAttenuationChanged(quadraticAttenuation)
Parameters

quadraticAttenuationfloat

PySide2.Qt3DRender.Qt3DRender.QSpotLight.setConstantAttenuation(value)
Parameters

valuefloat

PySide2.Qt3DRender.Qt3DRender.QSpotLight.setCutOffAngle(cutOffAngle)
Parameters

cutOffAnglefloat

See also

cutOffAngle()

PySide2.Qt3DRender.Qt3DRender.QSpotLight.setLinearAttenuation(value)
Parameters

valuefloat

PySide2.Qt3DRender.Qt3DRender.QSpotLight.setLocalDirection(localDirection)
Parameters

localDirectionQVector3D

See also

localDirection()

PySide2.Qt3DRender.Qt3DRender.QSpotLight.setQuadraticAttenuation(value)
Parameters

valuefloat