8

Self-Illumination Setting 1329
There are two ways to specify self-illumination.
Youcanturnonthecheckboxandusea
self-illumination color, or turn off the check
box and use a monochrome spinner, which is
comparable to using a gray scale self-illumination
color.
Self-illuminated materials do not show shadows
cast onto them, and they are unaffected by the
lights in the scene. The brightness (Value in the
HSV color description (page 3–1095) )remainsthe
same regardless of the scene’s lighting.
To make a visible light source in a scene, y ou can
combine a geometric object with a light object,
and give the geometric object a self-illuminating
surface. For example, y ou could creat e a lofted
light bulb shape, assign it a self-illuminating white
or yellowish material, and place an omni light in
thesamelocation.
To make a material both self-illuminating and
transparent, use the Additive transparency type in
combination with self-illumination. See
Extended
Parameters (page 2–1312)
.
An object that is self-illuminated using a percentage value
and a color
Procedure
To mak e a material self-illuminating:
1.
Click the color swat ch in the Self-Illumination
group.
2. In the Color S elector (page 1–157) ,choosea
color for self-illumination.
3. Use the color’s Value parameter (in the HSV
model) to increase or decrease the amount of
self-illumination (page 3–1103) .
Yo u c a n a l s o s e t s e l f - i l l u m i n a t i o n w i t h a
monochrome spinner. To do so, turn off the
self-illumination check box and adjust the
spinner.
The self-illumination color is mixed w ith the
material’s diffuse color. The closer to black the
self-illumination color , the more diffuse color
is used.
As s elf-illumination increases, t he s ample
object appears flatter and more luminous.
Interfa ce
Color c heck box—When on, the material
uses a special self-illumination color. When
off, the material uses the diffuse color for
self-illumination, and displays a spinner to control
the self-illumination amount. Default=off.
Co lor swatch—When Color is on, the color swatch
shows the self-illumination color. To change the
color, click the swatch and then use the
Color
Selector (page 1–157)
. Adjusting the Value (in the
color’s
HSV description (page 3–1095) )adjusts
the amount of self-illumination. The greater
the Value, the more the self-illumination color
dominates both the ambient and diffuse color
components.