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Cutout Mapping 1383
increase luminance because the object really glows
(for example a neon light tube), then you should
turn on Emit Energy, so that the object contributes
light to the scene.
Color B leed S ca le—Increases or decreases the
saturation of reflected color. Range=0.0 to 100.0.
Default=100.0.
Color Bleed increases or decreases the saturation of
reflected color.
Indirect Bump Scale—Sca les the effect of the base
material’s
bump mapping (page 2–1347) in areas
litbyindirectlight. Whenthisvalueiszero,
nobumpmappingisdoneforindirectlight.
Increasing Indirect Light Bump Scale increases the
bump effect under indirect lighting. This value
does not affect the Bump amount in areas where
the base material is lit directly. Range=–999.0 to
999.0. Default=100.0.
Tip: This parameter is usef ul because indirect
bumpmappingissimulatedandnotalways
accurate. Indirect Light Bump Scale lets you adjust
the effect by hand.
Reflectance Scale—Increases or decreases the
amount of energy the material reflects. Range=0.0
to 100.0. Default=100.0.
Reflectance Scale increases or decreases the energy of
reflected rays.
Tip: Don’t use this control to increase
self-illumination. Use the material’s Luminance
instead. The Luminance control is on the
Physical
Qualities rollout (page 2–1377)
.
Transmittance S cale—Increases or decreases
the amount of energy the material transmits.
Range=0.1 to 5.0. Default=1.0.
Transmittance Scale increases or decreases the energy of
transmitted rays.
Cutout Mapping
Material Editor > Architectural material > Special Effects
rollout > Cutout map button
Assigning a bitmap (page 2–1441) or procedural
map (page 3–1091)
to the Cutout component
of an
Architectural material (page 2–1376)
makes the material part ially transparent. Lighter
(higher-value) areas of the map render as opaque;
darker areas render as transparent; and values in
between are semi-transparent.
Setting t he cutout map’s Amount to 100 applies all
of the map. Transparent areas are fully transparent.
Setting the Amount to 0 is the equivalent of
turning the m ap off. Intermediate Amount values
are blended w ith the Transparency value on the
Physical Qualit ies rollout. Transparent areas of the
mapbecomemoreopaque.