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You will notice some light's transformation components are hidden. This is because they are not applicable to that particular light type.
| Light Name | Transformation |
|---|---|
| PxrRectLight | Translate, scale, and rotation. |
| PxrDiskLight | Translate, scale, and rotation. |
| PxrSphereLight | Translate, uniform scale, and rotation. If scaled non-uniformly it will render as a sphere anyway. |
| PxrCylinderLight | Translate, uniform cross-section scale, length scale, and rotation. If scaled non-uniformly it will render as a sphere anyway. |
| PxrDistantLight | Rotation only. |
| PxrDomeLight | Rotation only. |
| PxrPortalLight | Like a PxrRectLight, but you also need an external coordsys for the orientation of the dome texture itself. |
| PxrEnvDayLight | Rotation only. |
| PxrAOVLight | Since this is not a real light designed to illuminate, no translate, scale, and rotate. |
Portal Light
The PxrPortalLight is an optimized version of the dome light by looking through a "portal". To set up a PxrPortalLight OBJ, we need to set the Dome Light parameter to point to a PxrDomeLight OBJ. A dome light can have more than one portal light as children. Parent the portal light to the dome if you want the portal to inherit the dome's transform (optional).
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The default attributes for lights can be seen below. Camera visibility is off by default to make for easy art direction where you may place lights in front of the camera.
- Camera Visibility - Makes the light visible to camera rays.
- Transmission Visibility - Makes the light visible in transmission/refraction.
- Indirect Visibility - Makes the light visible to indirect specular reflections.
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