2008

Auto-smooth adjacent face Assigns smoothing groups on page 7932 according
to the Smooth-angle value. Smoothing groups determine whether faces on
an object render as a smooth surface or display a seam at their edges, creating
a faceted appearance.
Smooth-angle Controls whether smoothing occurs between two adjacent
faces. If the angle between the two face normals is less than or equal to the
smooth angle, the faces are smoothed (that is, put in the same smoothing
group).
Orient normals of adjacent faces consistently Analyzes the face normals of
each object and flips normals where necessary, so they all point in a direction
that is consistent with adjoining faces. If the imported geometry isn't properly
welded, or if the AutoCAD geometry did not contain or specify normal
information, normals might be oriented in the wrong direction. Use the
Edit
Mesh
on page 1283 or Normal on page 1509 modifiers to flip normals.
When Unify Normals is off, normals are calculated according to the face vertex
order in the linked file. Face normals for AutoCAD solids are already unified.
Turn off Unify Normals when importing only AutoCAD solid models from
AutoCAD Architecture.
Cap closed splines Applies an
Extrude modifier on page 1377 to all closed
objects, and selects the Cap Start and Cap End options of the modifier. The
Extrude modifier Amount value for a closed object with no thickness is set to
0. Capping makes closed objects with thickness appear solid and closed objects
without thickness appear flat. When Cap Closed Objects is off, the Extrude
modifier Cap Start and Cap End options for closed objects with thickness are
clear. No modifiers are applied to closed objects without thickness.
TIP Unless you chose the One-to-One sorting option, you won't immediately see
the Extrude modifier when selecting an object. To see it, look through the modifier
stack for the VIZBlock on page 7967 sub-objects. In a nested VIZBlock, the Extrude
modifiers appear at the bottom of the stack. You can then edit the Extrude modifier
parameters.
Texture Mapping The texture mapping setting can reduce the loading time
of models that have many objects with stored UVW Coordinates for texture
mapped materials.
6796 | Chapter 21 Managing Scenes and Projects