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FFD(Box) Space Warp 91
•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.
Inter face
The deflector’s effect is controlled mainly by its
size and orientation in the scene, relative to the
particle system that is bound to it. You can also
adjusthowstronglythedeflectordeflectsparticles.
Bounce—Controls the speed at which particles
bounce off t he 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 b ounce off
the deflector at a speed reduced from their initial
speed. At values g reater than 1.0, p articles bounce
off the deflector at a speed greater than their initial
speed. Default=1.0.
Variation—The amount by which each particle can
vary from the Bounce setting.
Chaos —Theamountofvariationfromtheperfect
angleofreflection(foundwhenChaosissetto
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 V el—(Velocity Inheritance) When the
value is greater than 0, the motion of the deflector
affects particles as well as t he other settings. For
example, if you want an animated SDeflector
passing through an array of par ticles to affect the
particles, tur n up this value.
Width—Sets the deflector’s width.
Lengt h—Sets the deflector’s length.
Geometric/Deformable
FFD(Box) Space Warp
Create panel > Space Warps > G eom etric/Deformable >
Objec t Type rollout > FFD(Box )
Create menu > Space Warps > Geometric/Deformable >
FFD(Box)
Free-form deformations (FFDs) provide a method
of deforming an object by adjusting the control
poin ts of a lattice. The offset position of the control
points to the ori ginal lattice s ource volume causes
the distortion of the affected object.