8

Render to Texture: Automatic Mapping Rollout 159
Render to Texture: Gener al Settings Rollout (page
3–152)
Render to Texture: Objects To B a ke Rollout (page
3–153)
Render to Texture: Output Rollout (page 3–155)
Render to Texture: Baked Material Rollout (page
3–157)
Inter face
Automatic Unwrap Mapping group
These are options for how to flatten UV s when Use
Automatic Map is chosen in the Objects T o Bake
rollout’s Mapping Coordinates group.
Note: These cont rols are also provided by the
Unwrap UVW modifier’s
Flatten Mapping dialog
(page 1–889)
.
Rot ate Cluster s—Cont rols whether clusters are
rotated to minimize the size of their bounding
box. For example, the bounding box of a rectangle
rotated 45 degrees occupies more area than one
rotated 90 degrees. Default=on.
Threshold Angle—The angle used to determine the
face clusters to be mapped. Default=45.0.
As faces are gathered to be mapped, the modifier
uses this parameter to determine which faces get
put in a cluster. This is the maximum angle that
can exist between faces in a cluster.
Thehigherthisnumber,thelargertheclusters
will be, with consequently greater distortion
introduced as a result of texture faces’ proportions
deviating from their geometry-equivalent faces.
Fill Holes—When turned on, smaller clusters w ill
be placed in empt y spaces within larger clusters to
take the most advantage of the available mapping
space. Default=on.
Spacing—Controls the amount of space between
clusters. Default=0.02.
The higher this setting, the larger the gap that
appears between clusters.
Automatic Map Size group
Rendering to texture can choose a map size for
you. Automatic map sizing is enabled or disabled
by a toggle on the
Output rollout (page 3–155) .
Thecontrolsinthisgroupspecifyhowtocreate
the map, when Automatic Map Size is enabled.
Automatic map sizing computes the total surface
area of a l l objects in the selection, then multiplies
that value by Scale, and creates a square texture
map of those dimensions.
Scale—The amount by which to scale the total
surface area of generated texture. Default=0.01.
Near est power of 2 —When on, rounds the map
dimensions (length and width) to the nearest
power of 2. Default=off.
Min—The minimum size, in pixels, of the length
and width of the automatically sized map.
Default=32.
Max—The maximum size, in pixels, of the
length and w idth of the automatically sized map.
Default=1024.