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1492 Chapter 16: Material Editor, Materials, and Maps
S pecul a r Hi ghli ght Contr ols
Anisotropic Highlights
Material Editor > Standard material > Anisotropic Basic
Parameters rollout > Specular Highlight group
Material Editor > Raytrace m aterial > Raytrace Basic
Parameters rollout > Shading: Anisotropic > Specular
Highlight group
Anisotropic highlights are good for modeling hair,
glass, or brushed metal.
Note: For the Raytrace material (page 2–1512),the
Specular Color component appears in the Specular
Highlight group. Also, highlight controls that don’t
pertain to the current shader are labeled “N / A.”
Pr ocedur es
To incr ease or decrease the size of a highlight:
• Change the Glossiness value.
ThewidthoftheHighlightcurvesandthe
high lights in the pre view change. At 0%
glossiness, the c urves are at their maximum
width. At 100% glossiness, both curves are
extremely narrow.
To increa se or decrea se t he st rength of a highli ght:
• ChangethevalueofSpecularLevel.
The intensity of the High lig ht curves and
the highlights in the preview change. At 0%
specular level, there is no hig hli g ht. At 100%
specular level, the curves are at their maximum
height with no overloading. At values greater
than 100%, t he curves are overloaded: they
grow wider, and a wider area is at the maximum
highlight intensity.
The shape of the High lig ht curves affects the
blending between the specular and diffuse color
regions of the material. The steeper the curve,
the less blend ing there is and the sharper the
edge of the specular highlig ht.
To a djust the s hape (anisotropy) of the highlight:
• Change the value of Anis otropy.
The w idth of the white highlight curve and
the highlights in the preview change. At 0%
anisotropy, both highlight curves are the same
and the highlight is circular, as in Blinn and
Phong shading. At 100% anisotropy, the white
highlight curve and the highlights are extremely
narrow.
To adjust the or ientation of the highlight:
• Change t he value of Orientation.
Highlights in the preview show the change in
orientation. The display of the highlight curve
does not change.
Interfa ce
Specular Level—Affects the intensity of the specular
highlight. As you increase the value, the highlight
grows brighter. Default=5.
Clickthemapbuttontoassignamaptothe
specular level component. See Specular Level
Mapping (page 2–1501).Thisbuttonisashortcut:
you c an a lso assign specular level mapping in the
Maps rollout (page 2–1474).
Glossines s—Affe cts t he size of the specu lar
highlight. As you increase the value, the highlight
gets smaller and the material appears shinier.
Default=25.
Clickthemapbuttontoassignamaptothe
glossiness component. See Glossiness Mapping