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1536 Chapter 16: Material Editor, Materials, and Maps
the map is applied as a texture map, this value is
ignored. Default=4 (screen).
• 1 is for Spherical.
• 2 is for Cylindrical.
• 3 is for Shrink-Wrap.
•4isforScreen.
Screen projection projects as a flat backdrop in
the scene. See
UVW Map Modifier (page 1–905)
for a description of spherical, cylindrical, and
shrink-wrap projection.
Ma pChannel—If the map is applied as a texture
map and U VWSource is set to 0 (Explicit), this
value s ets the map channel index; otherwise, this
value is ig nored. Range=1 to 99. Default=1.
UV W Sour ce—Ifthemapisappliedasatexturemap,
thisvaluechoosesthesourceofUVWcoordinates.
If the map is applied as an environment map, this
value is ignored. Default=0 (Explicit).
•0isforExplicit.
When Explicit is the source, use MapChannel
to set the specific map channel.
•1isforObjectXYZ.
Object XYZ uses planar m apping based on the
object’s local coordinates (disregarding the
pivot point location). For rendering purposes,
planar mapping doesn’t project through to
the back of the object unless you tu rn on
ShowMapOnBack.
•2isforWorldXYZ.
World XYZ uses planar mapping based on
the scene’s world coordinates (disregarding
the object’s bounding box). For rendering
purposes, planar mapping doesn’t project
through to the back of the object unless you
turn on ShowMapOnBack.
ShowMapOnBack —When on, planar mapping
(Planar from Object XYZ, or with the UVW Map
modifier)projectsthroughtorenderontheback
of the object. When off, planar mapping doesn’t
render on the object’s back. Default=on.
This toggle is available only when Tiling i s off in
both dimensions. Its effect is visible only when
you render the scene.
Note: In viewports, planar mapping always projects
to the back of the object, whether Show Map On
Back is turned on or not. To override t his, turn
off Tiling.
UOf fset—Changes the U position of the map i n
UV coordinates (page 3–1122) .Themapmovesin
relation to its size. Default=0.0.
For example, if you want to shift the map its full
width to the left, and half its width downward from
its original position, you enter -1 in the U Offset
field and 0.5 in the V offset field.
UScale—Determines the number of times the map
is
tiled (page 3–1116) (repeated) along the U axis.
Default=1.0.
UWra p—Turns tiling on or off in the U axis.
Default=on.
UMirror— Mirrors (page 3–1116) the m ap
left-to-right along the U axis. Default=off.
VOffset—Changes the V position of the map in U V
coordinates. Default=0.0.
VScale—Determines the number of times the map
is tiled (repeated) along the V axis. Default=1.0.
VWrap—Turns tiling on or off in the V axis.
Default=on.
VMirror—Mirrors the map top-to-bottom along
the V axis. Default=off.
UAngle, VAngle, a nd WAngl e—Rotate the map
about the U, V, or W axis (in degrees). Default=0.0.
UVAxis —Changes the mapping coordinate system
used for the map. The default UV coordinates
project the map onto the surface like a slide
projector . The VW and WU coordinates rotate