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FFD(Box) Space Warp 87
•Ifusing Particle Flow (p age 2–105) ,specify
the deflector in the
Collision test (p age
2–208)
or Collision Spawn test (page 2–211)
parameters.
•
If using a non-event-driven particle
system (page 2–233)
, bind (page 2–54) the
particle system to the deflector icon.
Inter face
The deflector’s effect is controlled mainly by its
size and orientation in the scene, relative to the
particle system that is b ound to it. You can also
adjusthowstronglythedeflectordeflectsparticles.
Bounce—Controls the speed at which particles
bounce off the deflector. At a setting of 1.0,
particlesbounceoffthedeflectoratthesamespeed
they struck it. At 0.0, particles do not bounce at all.
At values between 0.0 and 1.0, par ticles bounce off
the deflector at a speed reduced from their initial
speed. At values greater than 1.0, part icles bounce
off the deflector at a speed greater than their init ia l
speed. Default=1.0.
Variation—The amount by which each particle can
vary from the Bounce setting.
Chao s —Theamountofvariationfromtheperfect
angleofreflection(foundwhenChaosissetto
0.0). 100% induces a variation in reflection a ng le
of up to 90 degrees
Fr ict io n —The amount by which particles 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 va lue of 100% means they stop
moving when they str ike the surface. Default=0%.
Range=0% to 100%.
Tip: To have pa rticles 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 str ike the surface at an angle other than 90
degrees.
Inherit Vel—(Velocity Inheritance) When the
value is greater than 0, the motion of the deflector
affects par ticles as well as the other settings. For
example, if you want an animated SDeflector
passing through an array of particles to affect the
particles, tu rn up this value.
Width—Sets the deflector’s w idth.
Lengt h—Sets the deflector’s length.
Geometric/Deformable
FFD(Box) S pace Warp
Create panel > Space Warps > Geometric/Deformable >
Objec t Type rollout > FFD(Box)
Create menu > Space Warps > Geometric/D eformable >
FFD(Box)
Free-form deformations (FFDs) provide a method
of deforming an object by adjusting the control
points of a lattice. The offset position of the control
points to the ori ginal lattice source volume causes
the distortion of the affected object.