The following group codes are used by RENDERENVIRONMENT objects.
RENDERENVIRONMENT group codes
Group code
Description
0
Object name (RENDERENVIRONMENT)
5
Handle
102
Start of persistent reactors group; always “{ACAD_REACTORS”
330
Soft-pointer ID/handle to owner dictionary. For a RENDERENVIRONMENT object, this is always the ACAD_RENDER_ENVIRONMENT entry of the named object dictionary
102
End of persistent reactors group; always “}”
100
Subclass marker (AcDbRenderEnvironment)
90
Class version 1
290
Fog enabled flag; 1 if enabled
290
Fog in background flag; 1 if enabled
280, 280, 280
Fog color; Red, green, and blue channel values
40, 40
Fog density; Near and Far density as a percentage
40, 40
Near and Far distance as a percentage of the distance between the camera and the far clipping plane
290
Environment image flag
1
Environment image file name (can be blank if the previous flag is 0)