See Figure 7.56.
Used sparingly, noise can add great detail to highlights for any shiny object when
mapped to the specular color. In this case, just make sure the colors in the noise do not
contrast too much against each other, which would make the map faint.
Wood
Wood is a quick way to add wood grain to a material. See Figure 7.57.
Just like with the Marble map, you can set the color of the wood grain with Color #1 and
Color #2. Adding Radial Noise and Axial Noise will make the wood appear to have more burls.
Wood Parameters The parameters have been applied to this cylinder.
Figure 7.57
The Wood effect
Noise Parameters The parameters have been applied to this cylinder.
Figure 7.56
The Noise effect
330 ?– chapter 7: Materials and Mapping
Compositor and Color Modifier Maps
In image processing, compositing images refers to superimposing two or more images to
combine them in a variety of ways. In CG, compositors are meant specifically for compositing
colors or maps together for some advanced effects. Color Modifier maps alter the
color of pixels in a material for some advanced effects. Color modifiers and compositor
maps will not be covered in this book.
Using Opacity Maps
Opacity mapping allows you to cut out parts of an object by making those parts invisible.
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