9

Advanced Lighting Panel (Object Properties Dialog) 125
For more information on the Radiosity-only
Properties group, see Radiosity Control Panel (page
3–61).
Objec t Subdivision Properties group
Use Global S ubdivision S ettings—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. T he subdivision t hat is
performed is determined by the Use Adaptive
Subdivision switch. When off, the s ettings
in the Mesh Sett ings g roup are unavailable.
Default=on.
•
UseAdaptiveSubdivision—Toggles adaptive
subdivision. D efault=on.
Tip: Adaptive meshing is computed for an
object only if ShootDirectLightsis turned on i n
the Radiosity Meshing Parameters rollout (page
3–67).
Note: The Mesh Settings g roup parameters
Contrast Threshold, Min Mesh Size, and Initial
Mesh Size are available only when Use Adaptive
Subdivision is turned on.
Mesh Setting s group
Ma x Mes h Si ze—The size of the largest fa ces after
adaptive sub division. Default=36” for imperial
units and 100cm for met ric units.
WhenUseAdaptiveSubdivisionisoff,MaxMesh
Size sets the s ize of the radiosity mesh in world
units.
Mi n Mesh S ize—Faces are not divided smaller than
the minimum mesh size. Default=3 inches for
Imperial units and 10cm for metric units.
Contrast Threshold—Faces that ha ve vertex
illuminations that differ by more than the Contrast
Threshold setting are subdiv ided. Default=75.0.
Initial Mesh S ize—When improving the face shape,
faces that are sm aller than the Initial Mesh Size
are not subdivided. The threshold for deciding
whether a face is poorly shaped also gets larger
asthefacesizeisclosertotheInitialMeshSize.
Default=12 inches for Imperial units and 30cm for
metric units.
Ra diosity R efine Iterations—The number of refine
iterations in the radiosity process for the current
selection.
It era tions Done—Thenumberofrefineiterations
performed on the current selection.
Light Objec t Radiosity Properties rollout
Theseoptionsareavailableonlyforlightobjects.
Exclude f rom R adiosity Processing—When on, the
current selection is excluded from the radiosity
solution. When lights are excluded from radiosity,
their direct contribution is only used for rendering.
This option is available only when By Object is
selected.
By Object/By Layer—To g g l es b e t w e e n obj e c t
settings or object layer settings. Object settings
affect only the object or objects selected. Object
layer settings affect all objects on the same layer as
the selected object.
Note: If multiple objects are selected and have
different settings, this button reads “Mixed.”
Store Direct Illumination in Mesh—When on, the
light’s direct illumination is added to the radiosity
mesh, e ven if the global rendering mode is Render
Direct Illumination. This is comparable to the
Re-Use Direct Illumination option when rendering
radiosity, but only for this p articular light.