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Volume projected object is used to create light beams from directional light sources, such as car headlights, searchlights or beacon light. It can also be animated to simulate a flow of particles that moves from the light source or even swirls. Only a volume proj material can be assigned to it.
Projected volume is rendered as a simple particle system. It is a number of billboards, where each following billboard is bigger than the previous one.
- The ObjectVolumeProj class to edit volume projected objects via API
Creating a Projected Object#
To create a Projected object, perform the following steps:
- On the Menu bar, click Create -> Volume -> Projected.
- Place the Projected object somewhere in the world.
- Specify the Projected object parameters.
In the Volume Projected section (Parameters window -> Node tab), you can adjust the following parameters of the volume projected object:
|Size||Size of the smallest billboard in units. By the minimum value of 0, the volume projected is not rendered at all.|
|Radius||Length of the light beam along the Z axis in units.|
|FOV||Width of the light beam. It is specified as the angle of the beam cone (in degrees).
|Step||Distance between neighboring billboards.
|Velocity||Velocity with which billboards move to the end of the beam (along the Z axis).|
|Rotation||Angle of billboards rotation (in degrees). This angle is set for the billboard at the end of the beam.
Positive rotation angle