9

Obstacle Parameters Rollout 1243
Note:
Objects are subject to a vector field’s forces
only if they are bound to the field with a Crowd
object. For general usage guidelines, see To u s e a
Vector Field space warp (page 2–1166).
Inter face
Display group
The check boxes in this gro up let you enable and
disable display of four different elements of the
Ve c tor F i e l d s p a c e w a r p.
Note: You can select a Vector Field space warp in
the viewport by clicking any of its visible elements
except the range representation. If you’ve tur ned
off displa y of all four elements, you can still select
the space warp by clicking its gizmo, which, when
viewed from the "top" (the orthogonal viewport
in which the warp was created), resembles a pair
of crossed double-headed arrows in the shape of
an X.
Show Lattice—Displays the vector field lattice, a
yellow wireframe box. Default=on.
The vectors are generated at lattice intersections
inside the vector field range.
Show R ange—Displays the volume about the
obstacle object within which vectors are generated,
as an olive-colored wireframe. Default=on.
The range starts out the same shape and size as the
obstacle object, and is typically enlarged with the
ComputeVectorsgroup>Rangesetting.
Show V ector Fie ld—Displays vectors, which
appear as blue lines emanating outward from
lattice intersections within the range volume.
Default=off.
Show Surface Samples—Displays short green lines
emanating from sample points on the surface of
the obstacle object. Default=off.
These appear only after you’ve computed the vector
field. See Sample Resolution for more information.
VectorScale—Scales the vectors so they’re more
visible or less obtrusive. Default=1.0.
Note: This sett ing does not affect the strength of
the vectors; only their visibility.
Icon Size—Adjusts the size of the Vector Field space
warp icon, a pair of crossed double-headed arrows.
Increase t he size for easier viewport selection.
Default=size originally drawn in v iewport.
Force group
These p ar ameters determine how the vector field
affects objects within its volume.
Changing any of the Force g roup settings does not
require that you recalculate the vector field.
Note: Using a vector field does not g uar antee
that delegates or particles remain at a particular
distance from the obstacle. In some cases you
might have to animate the Strength, Falloff, and/or
Pull settings to keep delegates within the vector
field.
Strength—Sets the deg ree of effect the vectors
have on the movement of an object entering the