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1094 Chapter 14: Character Studio
and sized so that it sur rounds the object to be
avoided. Thevectorsaregeneratedfromthe
lattice intersections. These vectors are, by default,
perpendicular to the surface of the object to which
the field is applied; if necessary, you can smooth
them out with a blending function. The crowd
members move around the object by traveling
perpendicular to the vectors.
Yo u c a n u s e t h e ve c t o r f i e l d a s a
Space Warp
behav ior (page 2–1073)
,asthesourceobjectfor
an
Avoid b ehavior (p age 2–1063)
,orboth.When
used together, delegates slow down when they
approach a complex object, and then go around
it. Thisguaranteesthatdelegateswillnotpass
through the obst acle’s surface.
The vector field includes settings for strength,
falloff, and a push/pull effect, as well as options
to display the lattice, the effective ra nge, and the
vectors.
The Vector Field space warp provides these
rollouts:
Create Method Rollout (page 2–1094)
Lattice Parameters Rollout (page 2–1094)
Obstacle Parameters Rollout (page 2–1094)
Create Met hod R oll out
Create panel > Space Warps > Particles & Dynamics >
Object Type rollout > Vector Field > Create Method rollout
The Create Method rollout for the Vector Field
space warp lets you specif y whether to create the
vectorfieldusingthecubeorboxmethod.
Inter face
Cube—Forces length, width, and height to be
equal.
Creating a cube-shaped space warp is a one-step
operation. Starting at the center of the cube,
drag in a viewport to set all three dimensions
simultaneously. You can change the indiv idual
dimensions in the Lattice Parameters rollout.
Box—Creates a standard box-shaped space war p
from one corner to the diagonally opposite corner,
w ith different setting s for length, width, and
height.
Lattice Parameters Rollout
Create panel > Space Warps > Particles & Dynamics >
Object Type rollout > Vector Field > Lattice Parameters
rollout
Selec t a Vector Field space warp. > Modify panel > Lattice
Parameters ro llout
Use these parameters to specify the Vector Field
lattice size and number of segments.
Interfa ce
Length/Width/Height—Specify the dimensions of
thelattice. Thelatticeshouldbelargerthanthe
Ve c t o r F i e l d o b j e c t .
Length Segs/Width Segs/Height S egs—Specify the
resolution of the Vector Field lattice. The greater
the resolution, the hig her the accuracy of the
simulation.
Obsta cl e Par a meter s R oll out
Create panel > Space Warps > Particles & Dynamics >
Object Type rollout > Vector Field > Obstacle Parameters
rollout
Selec t a Vector Field space warp. > Modify panel >
Obstacle Parameters rollout
A
vector field
, generated around an
obstacle
object
,allows
crowd (page 2–1038)
members to
avoidthatobjectinascene.Thefieldconsistsof
a three-dimensional array of vectors which guide
delegatesorotherobjectsaroundtheobstacle.
Thesettingsinthisrollouthelpdeterminehowthe