2008

Vector Field
In
crowd animation on page 4680 , a vector field is a special type of space warp
that crowd members can use to move around irregular objects such as a curved,
concave surface. The vector field gizmo, a box-shaped lattice, is placed and
sized so that it surrounds the object to be avoided. The vectors are generated
from the 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.
Vector Field Space Warp
In
crowd animation on page 4680 , you can use the Vector Field space warp
on page 4837 as a space warp behavior. A vector field allows crowd members
to move automatically around obstacle objects of any shape, following the
object contours. It also lets crowd members move within the confines of an
enclosed space, such as a room, while avoiding the walls. You can also use
Vector Field space warps to control particle motion.
The Vector Field space warp works by generating a number of vectors that
surround an object and are perpendicular to its surface. Crowd animation
then uses these vectors to guide delegates around the object by moving them
perpendicular to the vectors.
Glossary | 7963