9

998 Glossary
Three procedural m aps (bricks, Perlin marble, and splat), with
variations
A procedural map can be generated in two
dimensions, or in three. For example, Wood has a
grain that goes through the assigned geometr y. If
you cut away part of an object with wood assigned
as its texture, the grain in the cutaway p or tion
matchesthegrainontheobject’sexterior:itisall
generated by the same procedure.
Pr ojector Li ght
Shadows created by projecting image of palm trees
By adding a map to a lig ht, you turn it into a
projector. You can assign a single image, or you
can assign an animation to create the effect of
either a slide projector or a movie projector.
You can also use projector maps to project black
and white bitmaps to simulate shadows seen
through leaves or window f r a mes, in the same way
that gobos are used in theater lighting.
You’re not limited to circular projectors. Since
you’re usually projecting a rectangular image, you
canusearectangularlighttoprojectit.Youcan
use the Bitmap Fit option to adjust the aspect ratio
of the light beam to match that of the projected
image.
When you use projection lig hts, it’s often helpful
to adjust their roll angle. You can do this with
the navigation con trols or with the roll angle
manipulator (page 2–1334).
Pr op B one
The CSM marker file format (page 3–925) supports
apropboneineitherorbothhands.Therearesix