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240 Chapter 18: Effects and Environments
Radial Color group
The Radia l Color settings affect the inner and
outer colors of the effect. You can set the color
swatches to set the inner and outer colors of the
Lens Effect. Each color swatch has a percentage
spinner that determines at what point that color
should stop and the next should start. You can
also use bitmaps such as gradient or cellular to
determine the radial color.
Fa lloff Cur ve—Displays the Radial Falloff dialog
(page 3–257) in which you can set weights for the
colors used in Radial Color. By manipulating the
Falloff Curve you can make the effect use more of
one color or map than the other. You can also use
a map to determine the falloff when a light is used
as a L ens Effects source.
Circular Color group
Circular Color determines the color of the effect
byusingfourdifferentcolorswatchesthatare
matched to the four quadrants of the effect. A m ap
canalsobeusedtodeterminecircularcolor.
Mix—Allows you to mix between colors set in
Radial Color and colors set in Circular Color.
Setting the spinner at 0 will only use values set
in Radial Color while setting the spinner at 100
w i ll only use values set in Circular Color. Any
value between 0 and 100 will mix between the two
values.
Fa lloff Curve—Displays the Circular Falloff dialog
(page 3–254) in which you can set weights for the
colors used in Circular Color. By manipulating the
Falloff Curve you can make the effect use more of
one color or map than another . You can also use a
map to determine the falloff when a light is used
as a L ens Effects source.
Radial Size group
Determines the radial size around the p articular
Lens Effect. Clicking the Size Curve button
displays the Radial Size dialog (page 3–259).
Using the Radial Size dialog you can create points
onalineandmovethosepointsalongagraph
to determine where the effect should be placed
around the light or object. You can also use a map
todeterminewheretheeffectshouldbeplaced.A
check box is used to act ivate the map.
Auto Se conda ry Element rollout, Opt ion s pan el
Apply Element To group
Lights—Applies the eff ect to lights picked in Lens
Effects Globals under the Parameters tab in the
Lights group box.
Image—Applies the effect to the rendered image
using p arameters set in Image Sources.
Image Centers—Applies to the center of an object
or to portions of an object as determined by the
Image Filters.
Image Sources group
Object ID—Applies the Lens Effect to particular
objects in your scene that have a corresponding
G-Buffer (page 3–946) (or Object) ID. The
G-Buffer is a geometry buffer and c an be defined