2008

A procedural map can be generated in two dimensions, or in three. For
example, Wood has a grain that goes through the assigned geometry. If you
cut away part of an object with wood assigned as its texture, the grain in the
cutaway portion matches the grain on the object's exterior: it is all generated
by the same procedure.
Projector Light
Shadows created by projecting image of palm trees
By adding a map to a light, 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 frames, 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 can use a rectangular light to project it. You can use
Glossary | 7903