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■ Crease Type. Specifies the presence of a crease (or sharpened edge) and
the effect of smoothing. Smoothing does not affect a crease with a value
of Always. A crease set to By Level retains its sharpness until the mesh
object is smoothed to the specified crease level.
■ Crease Level. When a crease is set to By Level, indicates the smoothing
level at which the crease starts to lose its sharpness.
Modify 3D Subobject Properties
In addition to solids, surfaces, and meshes, you can also use the Properties
palette to modify the properties of individual subobjects, such as faces, edges,
and vertices. Different properties are available for different types of subobjects.
In some cases, the application of properties can differ depending on the object
type. For example, you can modify the properties of mesh faces, including
their color. However, the color appearance of a mesh face might differ from
the equivalent color on a 3D solid face. This difference occurs because changing
the color of a face modifies the
diffuse color of the face, but not the ambient
color
(which is derived from the mesh material property). To obtain a closer
match between the color of 3D solid and mesh faces, you can add lights and
turn off the default lighting (which disables ambient lighting). You can also
1216 | Chapter 25 Modify 3D Models