9
Camera Map Per Pixel Map 1733
• Set Texture to the matte image you edited.
• Set ZBuffer Mask to the Z-depth rendering
(the RPF or R LA file).
Adjusting (which usual ly means i ncreasing)
the value of ZFudge can improve t he qualit y
of edges of the projection.
U sually it is a good idea to have Remove
Back Face Pixels turned on. Another way to
adjust the project ion edge is to adjust this
control’s Angle Threshold.
Tip: If you have persistent problems with
seams, try generating a mask with an alpha
channel and using it to clean up the edge of
the projection.
If you have multiple mattes to project, you
mightneedtoslicegeometrytomakeeach
map’s target a separate object.
Inter face
Ma p Channel—Sets which map channel to use.
Default=1.
Came ra—Clicktoturnon,thenselectacamerain
the scene by picking it in a viewport or using the
Select Objects dialog (page 1–78).
Once you have assi gned a camera, its name
appearsonthisbutton.
This camera should be the one used to render
themapusedintheTextureandZBufferMask
components.
Texture—Clicktoassignthetexturetoproject.
3ds Max lets you assign any kind of map, but
typically this w ill be a Bitmap (page 2–1631) that
contains an image file that you first rendered from
the same camera, then edited using a different
application.
ZB u f f er Mas k—Click to assign a map that contains
Z-depth data used to mask the projection from
unwanted surfaces. Typically this will b e an RPF
file (page 3–631) or an RLA file (page 3–630)
rendered using the same camera, with the Z
channel option turned on.
UsethetoggletoturnuseoftheZBufferMaskon
or off. By default, it is off, and it is not turned on
automatically when you assign the ZBuffer Mask.
•
ZFudge—ZFudge values other than 1.0 add a
margin of deviation to the use of the Z-depth
data, letting you fine-tune the Z-Buffer
masking. Default=1.0.
Mask —Behaves like the mask in the Mask map
(page 2–1689): it lets you view one map through
another. Black areas of the mask are transparent,
white areas are opaque, and gray areas are par tially
transparent, based on the percentage of the g ray.
•
Mask Uses the Camer a Projection—When on, the
maskusesthesamecameraprojectionasthe
Texture and ZBuffer Mask. When off, it uses
the object’s UVW coordinates. Default=on.
Remove Back Face Pixels—When on, sets the
projectiontoexcludesurfacesthatfaceawayfrom
the camera, based on the va lue of Angle Threshold.
Default=on.