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Specular (reflective & transparent) When on, objects on a selected layer are
treated as specular (smooth) in the radiosity process.
Exclude from Regathering When on, objects on a selected layer are excluded
from the regathering process of the radiosity solution.
For more information on the Radiosity Properties group, see Radiosity Control
Panel
on page 5995 .
Object Subdivision Properties group
Use Global Subdivision Settings When on, the object's meshing settings
correspond to the global subdivision settings on the Radiosity Control Panel.
When off, you can change the meshing settings for each object. Default=on.
■ Subdivide When on, a radiosity mesh is created for the objects regardless
of the global meshing state. The subdivision that is performed is determined
by the Use Adaptive Subdivision switch. When off, the settings in the Mesh
Settings group are unavailable. Default=on.
■ Use Adaptive Subdivision Turns adaptive subdivision on and off.
Default=on.
NOTE The Mesh Settings group parameters Contrast Threshold, Min Mesh
Size, and Initial Mesh Size are available only when Use Adaptive Subdivision is
turned on.
Mesh Settings group
Max Mesh Size The size of the largest faces after adaptive subdivision.
Default=36” for imperial units and 100cm for metric units.
When Use Adaptive Subdivision is turned off, Max Mesh Size sets the size of
the radiosity mesh in world units.
Min Mesh Size Faces are not divided smaller than the minimum mesh size.
Default=3” for imperial units and 10cm for metric units.
Contrast Threshold Faces that have vertex illuminations that differ by more
than the Contrast Threshold settings are subdivided. Default=75.0.
Initial Mesh Size When improving the face shape, faces that are smaller than
the Initial Mesh Size are not subdivided. The threshold for deciding whether
a face is poorly shaped also gets larger as the face size is closer to the Initial
Mesh Size. Default=12” for imperial units and 30cm for metric units.
7244 | Chapter 21 Managing Scenes and Projects