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164 Chapter 17: Rendering
Rot ate Cluster s—
Controls w hether clusters are
rotated to m inimize 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 b e mapped. D efault=45.0.
As faces are gathered to b e mapped, the mo difier
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 will
be placed in empty spaces within larger clusters to
take the most advantage of the available mapping
space. Default=on.
Spacing—Controls the amount of space b etween
clusters. Default=0.02.
The higher th is setting, the larger the gap that
appears between clusters.
Automatic Map Size group
Rendering to texture can choose a map size for
yo u. Automatic map sizing is enabled or disabled
byatoggleontheO utput rollout (page 3–160).
The controls in this group specify how to create
the map, when Automatic Map Size is enabled.
Automatic map sizing computes the total surface
area of all objects in the selection, then multiplies
that value by Scale, and creates a square texture
map of those dimensions.
Scale—Theamountbywhichtoscalethetotal
surface area of generated texture. Default=0.01.
Nearest power of 2 —When on, rounds the map
dimensions (length and width) to the nearest
power of 2. Default=off.
Min—The minimum s ize, 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.
R ender to Textur e: Ad d Tex t ur e
Elements Dialog
Rendering menu > Render To Texture > Render to Texture
dialog > Output rollout > Click Add to add a textu re
element. > Add Texture E lements dialog
This dialog lets you choose which elements will
be part of a baked material. Each element is an
individual bitmap . When you display a baked
textureinshadedviewports,someelementsmight
not display.
Note: If the Direct3D display driver (page 3–844) is
active, you can use a D irectX viewport shader (page
2–1464) to enhance baked texture display.
Interfa ce
Available Elements—Lists the elements available
for rendering. See B aked Texture Elements (page