9

88 Chapter 11: Space Warps and Particle Systems
Note:
Because particles bounce off the perimeter
of the spherical icon, the size of the icon affects
part icle deflection.
3. Apply t he deflector to the particle system using
the appropriate method:
•IfusingPar ticle Flow (page 2–109),specify
the deflector in the Collision test (page
2–212) or Collision Spawn test (page 2–215)
parameters.
•
If using a non-event-driven particle
system (page 2–237), bind (page 2–58) the
particle system to the deflector icon.
4. Position the SDeflector icon to interrupt the
particle st ream.
5. Adjust the SDeflector parameters as necessar y.
Inter face
Particle Bounce group
These settings determine how the deflector affects
the bound particles.
Bounce—Determines the speed with w hich
particlesbounceoffthedeflector. At1.0,the
particles b ounce at t he same speed as they
approach.At0,theydon’tdeflectatall.
Variation—The amoun t by which each particle can
vary from the Bounce setting.
Chaos —Theamountofvariationfromtheperfect
angle of reflection (found when Chaos is set to
0.0). 100% induces a variation in reflection angle
of up to 90 degrees
Fr iction —The amount by which part icles are
slowed as they move along the deflector surface.
Avalueof0%meansthey’renotslowedatall.A
value of 50% means they’re slowed to half their
original speed. A value of 100% means they stop
moving when they strike the surface. Default=0%.
Range=0% to 100%.
Tip: To have particles slide along a deflector surface,
set Bounce to 0. Also, unless influenced by a force
such as Wind or Gravity, particles meant to slide
should strike the sur face at an angle other than 90
degrees.
Inherit Vel—(Velocity Inheritance) When the value
is greater than 0, the motion of the deflector affects
particlesaswellastheothersettings.Forexample,
to animate the SDeflector passing through a
passive array of particles, turn up this value to
affect the particles.
Display Icon group
This option affects the display of the icon.
Diameter—Specifies the diameter of the SDeflector
icon. This setting also alters the effect of the
deflection, b ec ause particles bounce off the
perimeter of the icon. The scale of the icon also
affects the particles.