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78 Chapter 11: Space Warps and Particle Systems
theDisplacespacewarpobject.Valueslessthan0.0
displace geometry toward the warp. Default=0.0
Decay—Bydefault,theDisplacewarphasthesame
strength throughout world space. Increasing
Decay causes displacement strength to diminish
as distance increases from t he position of t he
Displace warp object. Default=0.0
Luminance Center—By default, the Displace space
warp centers the luminance by using medium
(50%) gr ay as the zero displacement value. Gray
values greater than 128 displace in the outward
direction (away from the Displace warp object)
andgrayvalueslessthan128displaceintheinward
direction (toward the Displace warp object). You
can adjust the default using the Center spinner.
With a Planar projection, the displaced geometry
isrepositionedaboveorbelowthePlanargizmo.
Default=0.5. Range=0 to 1.0.
Image group
These options let you choose a bitmap and map
to use for displacement.
Bitmap—(Labeled "None" by default.) Click to
assign a bitmap or map from a selection dialog.
Afteryouchooseabitmapormap,thisbutton
displays the bitmap’s name.
Remove Bitmap—Click to remove the bitmap or
map assig n ment.
Blur—Increase this va lue to blur or soften the effect
of the bitmapped displacement.
Map group
This area contains mapping parameters for a
bitmappedDisplacewarp.Themappingoptions
arecomparabletothoseoptionsusedwithmapped
materials. The four mapping modes control how
theDisplacewarpobjectprojectsitsdisplacement.
The war p object’s orientation cont rols w here in
the scene the displacement effect will appear on
bound objects.
Planar—Projects the map from a single plane.
Cy lindrical—Projects the m ap as if it were wrapped
around the cylinder.
Spherical—Projects the map from a sphere, with
singularities at the top and bottom of the sphere,
where the bitmap edges meet at the sphere’s poles.
Shrink Wrap—Truncates the corners of the map
and joins them all at a single pole, creating one
singularit y.
Length, W idth, Height—Specify the dimensions of
the bounding box of the space warp gizmo. Height
has no effect on planar mapping.
U/V /W T ile—Thenumberoftimesthebitmap
repeats along the specified dimension. The default
valueof1.0mapsthebitmaponce;avalueof2.0
maps the bitmap twice, and so on. Fractional
values map a fractional portion of the bitmap in
addition to copies of the whole map. For example,
a value of 2.5 maps the bitmap two and one-half
times.
Flip—Reverses the orientation of the map along
the corresponding U, V, or W axis.
Deflectors
POmniFlect Space Warp
Create panel > Space Warps > Deflectors > Object Type
rollout > POmniFlect
POmniFlect is a planar version of the omniflector
type of space warp. It provides enhanced
functionality over that found in the original
Deflector space warp, including refraction and
spawning capabilities.