8

Thin Wall Refraction Map 1513
You can edit one or more of the cubic maps using
a paint program, then click Reload t o update the
material and the scene.
Render Cubic Map Files group
To File—Cho ose a file name for the Up map (_UP).
Pick Object and Render Maps—Active when you
choose a file. Click to turn on, then select the
mapped object to render the six cubic m aps.
Assign the cubic m aps to the six From File buttons.
Thin Wall Refraction Map
Material Editor > Maps rollout > Click a M a p button. >
Material/Map Browser > Thin Wall Refracti on
Thin wall refraction
Thin Wall Refraction simulates the "jog," or offset
effect, you find when you view part of an image
through a plate of glass. For objects that model
glass, such as a Box in the shape of a window pane,
this map is faster, uses less memory, and provides
amuchbettervisualeffectthantheReflect/Refract
map.
Tip: At 100% refract ion and opacity, you can see
no diffuse color or mapping, and there is not
much illusion of a refractive material. The effect
is invisible. In the Maps rollout of the parent
material, set Refraction Amount to 50%, and in
the Basic Parameters rollout, set Opacity to a value
greater than 0.
Procedure
To assign the Thin Wall Refraction map to a material:
1.
Click the Map button for Refraction in the
material’s Maps rollout.
2. In the Material/Map Browser, choose Thin Wa ll
Refraction.
3. Adjust the map’s parameters.
4. Intheparentmaterial,settheRefractionMap
Amount to 50%.
5. Assign the m aterial to an object.
Interfa ce
Blur group
These controls are for antialiasing.
Apply B l ur—Turns on filtering to blur the maps.
Blur—Affectsthesharpnessorblurrinessofthe
generated map based on its distance from the
object. The farther away the map is, t he greater
the blurring. Blur is primarily used to avoid
aliasing (page 3–1001) .It’sagoodideatousea
small amount of blurr ing for all maps in order to
avoid the scintillation or aliasing that can occur
when pixel details are reduced off in the distance.
Default=1.0.