9

Coordinates Rollout (2D) 1627
Changing the Tiling value changes the size of
the m apped bitmap as it do es when you t ile the
map, but w ith Mirror and Tile turned off, the
bitmap appears only once.
4. Adjust the U and V Offset parameters to
position the decal.
Note: Yo u c a n a l s o u s e t h e Pa r a m e t e r s r o l l o u t’ s
Cropping and Placement controls to achieve
adecaleffect.
To offset the position of a map:
• On the Coordinates rollout, set the U and V
values to be between 0.0 and 100, or between
-100 and 0.0.
On the surface of the object, the map shifts in
the directions you chose.
UV offsets are especially useful when you have
turned tiling off and want the bitmap to appear
in a single location.
To r otate the map:
• On the Coordinates rollout, set the Angle U, V,
and W spinners.
Positive angles rotate the map in the
clockwisedirection;negativeanglesrotateit
counterclockwise.
Theanglecanbeupto360degrees,which
rotates the map completely and has no visible
effect unless you are animating the map’s
rotation.
You can also click Rotate to use the Rotate
Mapping Coordinates dialog, which lets you
change the rotation by dragging the mouse.
To increase or decrease antialiasing:
• On the map’s Coordinates rollout, increase or
decrease the Blur value.
For diffuse maps and other maps besides
bump maps, the Blur value is most effective
in the 0.5-20 range. Lower values decrease
antialiasing; higher values increase it.
TheBlurOffsetparameteradjuststheimage
before antialiasing Blur is applied. If all you
need is antialiasing, leave Blur Offset at its
default of 0.0.
To mak e a map image fuzzier:
• Onthemap’sCoordinate’srollout,increasethe
Blur O ffset va lue.
Blur Offset is a very st rong parameter. The Blur
Offset spinner has increments of 0.001 Values
greaterthan0.1arelikelytobetoohigh.
To mak e a map image sharper:
• On the map’s Coordinates rollout, decrease the
Blur Offset value to a va lue below 0.0.
ThenegativeBlurOffsetvaluesharpensthe
image.
Interfa ce
These controls appear on the Coordinates rollout
for many 2D maps:
Texture—Applies the map as a texture map to a
surface.Selectthetypeofcoordinatesfromthe
Mapping list:
Environ—Uses the map as an environment map
(page 3–934). Select the type of coordinates from
the Mapping list: