Autodesk AUTOCAD 2006, Command Reference Manual, Page: 1042 / 1490

Texture Map Sampling
Sets the method of sampling a texture map when it’s projected onto an object
smaller than itself.
Photo Raytrace Render Options Dialog Box
View menu: Render
➤
Preferences
Command line: rpref
Controls rendering options. This dialog box is available when Photo Raytrace
is selected as the Rendering Type and you choose More Options under
Rendering Options in the Rendering Preferences dialog box.
Anti-Aliasing
Controls the level of anti-aliasing used in rendering.
Back Face Normal Is Negative
Controls which faces are considered back faces in a drawing. When you
draw a 3D face and enter the vertices in a counterclockwise direction, a
positive normal vector points outward toward the viewer and identifies the
face as a front face. The back face is identified by a negative normal vector
that points away from the viewer.
Clearing this option reverses which faces are considered back faces. If Discard
Back Faces is selected, faces with negative normal vectors are considered
back faces and discarded.
1018 | Chapter 19