9

984 Glossary
Omnif lector
A space warp (page 3–1014) that deflects particles.
Omniflectors are also capable of refracting
particles and generating spawned particles.
Threekindsofspacewarpsareintheomniflector
category:
POmniFlect Space Warp (page 2–78)
SOmniFlect Space Warp (page 2–84)
UOmniFlect Space Warp (page 2–85)
See also
Dynaflector (page 3–931)
Opacity Falloff
Real tr ansparent surfaces vary t heir opacit y,
depending on the angle of t he material to your
point of view. For example, a bottle appears more
transparent at its center than at its edge b ecause
you’re looking through more glass at its edge.
In the E xtended Parameters rollout, you can
specify the falloff of the transparency, based on
theangleofthefacenormalstotheview.Ifaface
is perpendicular to the viewer, the angle of its
normal is 0 degrees. If the face is edge-on to the
viewer, its norma l ang le is 90 degrees.
Falloffiseitherinwardoroutward:
In—Transparency increases as the norm a l angle
approaches 0 degrees and decreases as the angle
approaches 90 deg rees. This gives the appearance
ofahollowobjectsuchasaglassballorbottle.
Inward opacity falloff
Top: None
Bottom: 100%
Out—Transparency increases as the normal angle
approaches 90 deg rees and decreases as the angle
approaches 0 degrees. This gives the appearance
of a solid object such as a cloudy glass marble.
Outward opacity falloff
Top: None
Bottom: 100%
The falloff amount never makes the object less
opaque than the value of the Opacity spinner. For
example, if Op acit y were set to 50, and Falloff set to
In, the inner portions would remain at 50 percent
opacity, and the Amt. spinner would change the
outer edges, until they b ec ame opaque at 100.