8

PDynaFlect Space Warp 77
Distortion angle by the Diffusion angle. This
effectively scatters the particles into a hollow cone.
Variation—Specifies a range of variation of the
Diffusion value.
Common group
Fr ict io n —The amount by w hich 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 stri ke the surface. Default=0%.
Range=0% to 100%.
Tip: To have pa rticles slide a long 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 surface at an angle other than 90
degrees.
Inher it Vel —(Velocity Inheritance) Determines
how much of a moving POmniFlect’s speed is
appliedtoreflectedorrefractedparticles.
Forexample,ifInheritVelis1.0,particleswith
no motion that are hit by a moving PomniFlect
inherit the speed of the POmniFlect at the p oint
of collision.
Spawn Effects Only group
These settings affect only particles set to Spawn On
Collision that do not either reflect or refrac t from
the omniflector. See
P article Spawn Rollout (page
2–267)
. The Spawns percentage spinner works
like the Reflects and Refrac ts p ercentage spinners,
but is the third in line to be processed. Thus, if
either Reflects or Refracts are set to 100%, no
particles are affected by these sett ings. Note also
that reflective or refractive particles spawn upon
collision, regardless of the settings in this group.
Spawns—Specifies the percentage of particles that
can use spawn effects.
Pas s Vel —Specifies how much of the particle’s
initial speed is maintained after passing through
the POmniFlect.
Variation—Specifies the variation of the Pass
Velocity sett ing applied to the range of par ticles.
Display Icon group
Width/Height—Specify the width and height of the
POmniFlecticon.Thisisfordisplaypurposesonly
and does not influence the deflector effect.
PDynaFlect Space Warp
Create panel > Space Warps > Deflectors > Object Type
rollout > PDynaFlect
PDynaFlect (planar dynamics deflector) is a
planar version of t he dynaflector, a special class
of space w arp that lets particles affect objects in
a dynamics situation. For example, if you want a
stream of particles to strike an object and knock
it over, like the stream from a firehose strik ing a
stack of boxes, use a dynaflector.
Note: You use dynaflectors in the same way as
omniflectors; that is, you can use them as deflectors
alone, with no dynamics simulation. Because they
take physics into account, dynaflectors are slower
than omniflectors. Therefore, it is recommended
that you use dynaflectors only when a dynamics
simulation is involved.