2011

Mirrored Map
Mirroring doubles the map and flips the doubled copy. As with tiling, you
can mirror in the U dimension, the V dimension, or both.
Adjust Mapping On Objects and Faces
After you apply a texture to a material, you can adjust the orientation of the
texture map on objects or faces.
When materials are mapped, you can adjust the material to fit the shape of
the object. Applying the appropriate type of material mapping to an object
improves the fit.
■ Planar mapping. Maps the image onto the object as if you were projecting
it from a slide projector onto a 2D surface. The image is not distorted from
the direction of projection but is distorted if projected onto a curved surface
and viewed at from the side. The image is not scaled to the object. This
mapping is most commonly used for faces.
■ Box mapping. Maps an image onto a boxlike solid. The image is repeated
on each side of the object.
■ Spherical mapping. Maps an image onto a spherical object. The top edge
of the map is compressed to a point at the “north pole” of the sphere, as
is the bottom edge at the “south pole.”
■ Cylindrical mapping. Maps an image onto a cylindrical object; the
horizontal edges are wrapped together but not the top and bottom edges.
The height of the image is scaled along the cylinder’s axis.
2098 | Chapter 45 Materials and Textures