8

Behaviors 1009
Behaviors
In crowd animation (page 2–1006) , behaviors
simulate a range of activities. Seek, avoid, path
follow, surface follow, repel, orientation, scripted,
space warp, surfa ce arrive, wall repel, wall seek,
and wander are all behaviors available in a crowd
simulation.
Behaviors let you assig n procedural activity types
to delegates and objects linked to delegates. You
can associate any number of behaviors with each
Crowd object, and then link delegates and teams
ofdelegatestoeachbehavior.Aspecificbehavior
assigned to a Crowd object belongs only to that
crowd; it cannot be assigned to any other crowds.
B end Link s
Bend Links Mode active (lef t) and B e nd Links Mode inactive
(right)
WhenyouturnonBendLinksMode(onthe Bend
Links rollout (page 2 –807)
), rotating a single chain
link causes the other links to bend following a
natural curvature. When B end Links Mode is off,
rotating one link rotates all its children links by
thesameamount.
Tip: Bend Links works well on the biped spine,
neck, tail and ponytail links.
Bezier Curve
Bezier cu rve and the control points and ta n gent vectors
about each vertex
A curve modeled using a parametr ic polynomial
technique. Bezier curves can be defined by many
vertices. Each vertex is controlled by two other
points that control the endpoint tangent vectors.
Bezier curves were developed by P. Bezier for
computer modeling in automobile design.
A vertex on a Bezier Curve affects the entire
cur ve in that area. Compare with
B-splines (page
3–1007)
, where the control ver tices (CVs) affect
only their local region of the curve or surface.
Asegmentonan
editable spline (page 1–292) that
has its vert ices set to Bezier or Bezier Corner is
considered a Bezier Cur ve.
B ioVisi on Fil es
TheBioVision™fileformatstoresmotion-capture
information. A BVH file contains the "actor’s"
skeletal and limb/joint rotation data, and uses the
.bvh file name extension.
Note: FortheBVHfilespecification,seethe
BVH.rtf document on the program disc.