Shade 12. Volumetric Lights
From ShadeCamp
Volumetric Lights
Volumetric Lights Overview
Volume Light expresses light trajectory from light sources. You can express light trajectory in the air with hovering dust, light trajectory with color through stained glass and shadows that screens cast.
Setting up Volumetric Lights
Volumetric Lights are available by setting the VolumeLight attribute of the light source. To set the VolumeLight attribute, in Shade Browser select the light source and then select the Object Info. The VolumeLight attribute is now available at the bottom of the Object Info.
Volume Light Attributes for Shade Lights
Point Light
A Point Light can take the VolumeLight attribute.
Spot Light
In addition to attributes available to Point Lights, Spot Lights include Angle and Softness attributes which in turn influence the appearance of a light that uses the VolumeLight attribute.
Distribution Light
Distribution Lights can also take a VolumeLight attribute, as well as load IES settings.
Line Light Source
A line object treated as a light source can take the VolumeLight attribute.
Area Light
An Area Light Line can take the VolumeLight attribute.
Volume Effects with Transparent Objects
Lights with the VolumeLight attribute pass through transparent or semi-transparent objects and take on the attributes of the objects, including any changes to trajectory or shadow effects.
Volume Effects with Transparent Objects and Gel Effects
Lights with VolumeLight attributes pass through colored transparent objects and renders the light using the color and level of transparency.
Volume Effects with Trimmed Map Effects
Lights with VolumeLight attributes render light where light passes through an object with trim mapping.
Volume Effects and Surface Material Effects
Specular and Diffuse lighting effects are available with Volume Effects.
Mapping Effects
The result of diffused reflex mapping and trim mapping with surface material setting set up in light source are reflected. Settings with multiple layers are supported.
Cloud/Diffused Reflections
Cloud/Trim Maps
Check/diffused Reflections
Image/Diffused Reflections
Wave/Striped/Diffused Reflections
Effects with Booleans
This corresponds to replacement with & and =. Another mapping is set up with a sweep body marked with = on the light source on the right half of an object.
