Autodesk LIGHTSCAPE, Manual

Page: 127 / 362

Editing Material Properties
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On the property sliders, the valid range for the
selected template is highlighted in green.
Note: The range indicator appears only if no
texture map is used. Otherwise, the texture map
establishes the reflectance properties, and color is
only used for default display when texture display
is disabled.
3.
Select HSV from the color model list, above the
color preview window.
4.
Use the HSV sliders to adjust the material color
within the highlighted range. You can also enter
HSV values in the corresponding boxes:
•
Hue (H) sets the color of the reflected light.
• Saturation (S) controls the amount of coloration of
the reflected light.
• Value (V) controls the amount of light that is re-
flected. As you adjust the value slider, the Reflec-
tance values are updated. By default, the color value
is the same as the reflectance value. You can, howev-
er, modify the reflectance for a given color value us-
ing the Reflectance Scale on the Physics panel. For
more information, see “Using Reflectance Scale” on
page 113.
5.
To select a color using the RGB color model, se-
lect RGB from the Color mode list and use the RGB
sliders to select the Red, Green, and Blue color val-
ues.
Using Procedural Textures
Use procedural textures to increase realism by
adding variation to the appearance of materials that
do not use a texture map.
There are two types of procedural textures:
• Bump maps , which make a surface appear bumpy
by perturbing the surface normal at each point.
• Intensity maps, which modify the intensity of a sur-
face by scaling the color at each point.
Procedural textures are very different from image
textures. When working with procedural textures,
remember the following:
• Texture alignment has no effect on procedural tex-
tures.
Valid range indicator
Color preview window
Procedural texture used to simulate water