Volumetric Objects

Volumetric objects are used to simulate different kinds of volumes depending on their materials:

• Visible light volumes (they are not light sources, therefore, they don't illuminate the scene):
  • Spheres of light around omnidirectional light sources
  • Beams from directional light sources
  • Light volumes around flat light emitters
  • Sun beams falling into a room through openings
• Fog that obscures objects inside its volume
• Clouds or shaped fog

There are four possible shapes for volumetric objects:

• Box
• Sphere
• Omni
• Proj (projected)

To create various effects described above, you need to assign them different materials. Some materials can be assigned only to one type of volumetric objects.

• volume_cloud_base material
• volume_fog_base material
• volume_light_base material
• volume_omni_base material
• volume_proj_base material
• volume_shaft_base material