9

992 Glossary
producetheresultyouwant. Youcanflipthe
orientation of the path by pressing
Ct rl while
getting the path. Pressing
Ct rl aligns the path
so that the tangent to the first vertex of the path is
aligned with the negative Z axis of the shape.
Pa th Foll ow Beha v io r
In crowd animation (page 2–1154),thePathFollow
behav ior lets you direct delegates to t raverse
a specified path during a crowd simulation.
Delegates c an move forward or backward along
paths, and when they reach the end, they can loop
back to the start or reverse direction, or even
cont inue in the same general direction.
If the delegate’s start position isn’t on the path
at the star t of the simulation, it moves to the
path before following the path. During the
solution, character studio intermittently displays
an optional target icon to show the delegate’s
immediategoal;thischangesasthesimulation
proceeds.
Per iod
When you animate a biped, a f reeform period is a
period between footsteps where you can animate
the biped any way you want. Biped dynamics
(page 3–916) are suspended during this period.
See Freeform Animation Between Footsteps (page
2–883).
Per s pecti ve Vi ew
Perspective view of the ice-cream shop
Pe rspective views most closely resemble human
vision. Objects appear to recede into the distance,
creating a sense of depth and space. For most 3D
computer g r aphics, this is the v iew used in the final
output that the client sees onscreen or on the page.
There are three ways to create a perspective view
in a viewport: perspect ive view, c amera view, and
light view.
A perspective viewport, labeled Perspective, is one
of the defau lt viewports. You can change any active
viewport to this eye-like point of v iew by pressing
the keyboard shortcut
P .
Acameraviewrequiresthatyoufirstcreatea
camera object in your scene. The camera v iewport
tracks the view t hrough the perspective of that
camera. As you mov e the camera (or target)
in another viewport, you see the scene swing
accordingly. If you alter the camera’s field of
view on the Modify command panel, you see the
changes as they are applied.
The lig ht view works much like a targeted camera
view. You first create the spotlight or directional
light and then set the view port to that light. What
you see in the viewport is the view from the light
looking into the scene. This is very useful for