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64 Chapter 11: Space Warps and Particle Systems
foreachvectorwithinasphericalvolumewhose
radius is set by the Range setting, when Unlimited
Range is off.
Radial/Tangential—Radial specifies the percentage
of particle motion toward or away from the center
oftheDragiconthat’saffectedbythedamping.
Tangential specifies the percentage of particle
motion across the body of the Drag icon that’s
affected by the damping.
Range—Specifies the distance from the center
of the Drag icon, in system units, within which
dampingisinfulleffect. Takeseffectonlywhen
Unlimited Range is turned off.
Fa lloff—Specifies the distance beyond the
Radial/Tangential Range within which Linear
Dampingisapplied.Dampingisstrongestatthe
Range distance, decreases linearly out to the limit
of the Falloff, and has no effect be yond that. While
Falloff takes effect only beyond the Range, it is
measured from the center of the icon, and always
has a minimum v alue equal to the Range value.
Takes effect only when Unlimited Range is tur ned
off.
Cylindrical Damping—When Drag operates in
Spherical Cylindrical mode, its icon is a cylinder
within a cylinder. Particle motion is broken up
into radial, tangential, and axial vectors. Damping
is applied within a spherical volume for the radial
and tangential vectors and on a planar basis for
the axial vector.
Ra dial/Tangential/Ax ial—Damping controls the
percentage of particle motion toward or away
from the center of the circular portion of the icon
(Radial), across the radial vector (Tangential),
or along the length of the icon’s long axis (Axial)
that’s affected by the damping, on a per-frame
basis.
Range—Specifies the distance from the center
of the Drag icon, in system units, within which
Radial and Axial damping are in full effect. Range
also specifies the thickness of the infinite plane
that governs the range of Axial damping. Takes
effect only when Unlimited Range is turned off.
Fa lloff—Specifies the distance beyond the
Radial /Tangent ial/Axial Range within which
Linear Damping is applied. Damping is strongest
at the R ange distance, decreases linearly out to the
limit of the Falloff, and has no effect beyond that.
While Falloff takes effect only beyond the Range,
it is measured from the center of the icon, and
always has a minimum value equal to the Range
value. Takes effect only when Unlimited Range is
turned off.
Display group
Icon Size— Specifies the size of the icon.
PBomb Space Warp
Create panel > Space Warps > Forces > Object Type
rollout > PBomb
Createmenu>SpaceWarps>Forces>PBomb
ThePBombspacewarpcreatesanimpulsewaveto
blow up a p article system, as dist inguished from
the
Bomb space warp (p age 2–101) ,whichblows
up geometry. The PBomb is particularly well
suited to the Particle Array (PArray) system with
Particle Types set to Object Fragments. This space
warp also applies an impulse as a dynamics effect.
Thegeneralusageisasfollows:
• Create a part icle system (recommended: a
PArray system (page 2–252) set to Object
Fragments).
•
Create a PBomb and use Bind to
Space War p (page 2–54)
to bind it to a
non-event-driven particle system. Be sure to
bindthePBombtotheparticlesystemandnot
to the distribution object. Or, if using Particle