PySide6.Qt3DRender.Qt3DRender.QPointLight¶
- class QPointLight¶
Encapsulate a Point Light object in a Qt 3D scene. More…
Synopsis¶
Properties¶
Methods¶
def
__init__()
Slots¶
Signals¶
Note
This documentation may contain snippets that were automatically translated from C++ to Python. We always welcome contributions to the snippet translation. If you see an issue with the translation, you can also let us know by creating a ticket on https:/bugreports.qt.io/projects/PYSIDE
Detailed Description¶
A point light is a light source that emits light in all directions, from a single point. Conceptually, this is similar to light given off by a standard light bulb.
A point light 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.
Note
Properties can be used directly when
from __feature__ import true_property
is used or via accessor functions otherwise.- property constantAttenuationᅟ: float¶
Specifies the constant attenuation of the point light.
Note
The exact meaning and use of this property is up to the material implementation.
- Access functions:
- property linearAttenuationᅟ: float¶
Specifies the linear attenuation of the point light.
Note
The exact meaning and use of this property is up to the material implementation.
- Access functions:
- property quadraticAttenuationᅟ: float¶
Specifies the quadratic attenuation of the point light.
Note
The exact meaning and use of this property is up to the material implementation.
- Access functions:
- __init__([parent=None])¶
- Parameters:
parent –
QNode
Constructs a new
QPointLight
with the specifiedparent
.- constantAttenuation()¶
- Return type:
float
See also
setConstantAttenuation()
Getter of property
constantAttenuationᅟ
.- constantAttenuationChanged(constantAttenuation)¶
- Parameters:
constantAttenuation – float
Notification signal of property
constantAttenuationᅟ
.- linearAttenuation()¶
- Return type:
float
See also
setLinearAttenuation()
Getter of property
linearAttenuationᅟ
.- linearAttenuationChanged(linearAttenuation)¶
- Parameters:
linearAttenuation – float
Notification signal of property
linearAttenuationᅟ
.- quadraticAttenuation()¶
- Return type:
float
See also
setQuadraticAttenuation()
Getter of property
quadraticAttenuationᅟ
.- quadraticAttenuationChanged(quadraticAttenuation)¶
- Parameters:
quadraticAttenuation – float
Notification signal of property
quadraticAttenuationᅟ
.- setConstantAttenuation(value)¶
- Parameters:
value – float
See also
constantAttenuation()
Setter of property
constantAttenuationᅟ
.- setLinearAttenuation(value)¶
- Parameters:
value – float
See also
linearAttenuation()
Setter of property
linearAttenuationᅟ
.- setQuadraticAttenuation(value)¶
- Parameters:
value – float
See also
quadraticAttenuation()
Setter of property
quadraticAttenuationᅟ
.