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1361

Anisotropy Mapping 1345

window.

Ray-traced shadows (page 3–1094)

cast

by transparent objects are t inted by the filter color.

(In version 1 and 2, you specified the filter color

on the

Basic Parameters rollout (p age 2–1311)

As of version 3, the filter color is specified on the

Extended Par ameters rollout (page 2–1312)

Procedure

To map the filter color:

Click the Map button for Filter color.

The

Material/Map Browser (page 2–1291)

displayed.

2. Choose from the list of map types, and then

click OK.

TheMaterialEditorisnowatthemaplevel,and

displays controls for the map parameters.

3. Use the map controls to set up the map.

Anisotropy Mapping

Material Editor > Standard material > Shader Basic

Parameters rollout > Anisotropic or Multi-Level shader >

Maps rollout > Anisotropy button

Mapping anisotropy. The stretch of the highlight depend s

on the level of gray in the map.

Yo u c a n s e l e c t a b i t m a p f i l e o r

procedural

map (page 3–1091)

to control the Anisotropy

parameter. Themapcontrolstheshapeof

the anisotropic highlight, roughly (but not

necessarily) within the area specified by the

glossiness parameter. Black and white values have

little effect. Maps with a good deal of grayscale

values, such as

Noise (page 2–1484)

Falloff

(page 2–1480)

,canbeveryeffective.

The anisotropy parameter is avai lable with the

Anisotropic (page 2–1321)

and

Multi-Level (page

2–1323)

shaders.

The effect of mapping anisotropy is not very

apparent unless the specular level is fairly high and

glossiness is fairly low.

Reducing the Amount of the anisotropy map

reduces the map’s effect, and increases the effect

of the Anisotropy value on the Basic P arameters

rollout. When the A mount is 0 p ercent, the map

isn’tusedatall.