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1480 Chapter 16: Material Editor, Materials, and Maps

Basic Material Shaders

Anisotropic Shader

Material Editor > Standard material > Shader Basic

Parameters rollout > Anisotropic shader > Anisotropic

Basic Parameters rollout

TheAnisotropicshadercreatessurfaceswith

elliptical, "anisotropic" highlights. These

highlights are good for modeling hair, glass, or

brushed metal. The basic parameters are similar

to those for Blinn or Phong shading ( page 2–1480),

except for the Specular Highlight parameters,

and Diffuse Level controls such as those for

Oren-Nayar -Blinn shading (page 2–1482).

Anisotropic highlights a re elliptical, with differing U and V

dimensions.

Anisotropy measures the difference between sizes

of the highlig ht as seen from two perpendicular

directions. When anisotropy is 0, there is no

difference at all. The highlig ht is circular, as in

Blinn or Phong shading. When anisotropy is 100,

thedifferenceisatitsmaximum.Inonedirection

the highlight is very sharp ; in the other direct ion it

is controlled solely by Glossiness.

For more complex highlights, see the Multi-Layer

shader (page 2–1481).