8

CIBSE Files 1015
CI BS E Fil e s
TheCIBSEfiletypeisthefileformatfor
photometr ic data adopted by the Chartered
Institution of Building Services Engineers. It is
used primari ly in Great Britain.
Clip Contro ller
In
crowd animation (page 2–1006)
,the
GlobalMotionClip and MasterMotionClip
controllers are used to create animation for
multiple objects. Birds, butterflies, schools of
fish, and bugs can b e animated using these tools.
Clip controllers can be created either as block
controllers in Track View, or more directly in
the
Crowd helper (page 2–1038)
controls on the
Global Clip Controllers rollout (page 2–1093)
.Use
clip controllers to animate non-biped creatures in
crowds.
Cli pping P la nes
Clipping planes let you exclude some of a scene’s
geometry to view or render only certain portions
of the scene. Each camera has a near and a far
clipping plane. Objects closer than the near
clipping plane or farther than the far clipping
planeareinvisibletothecamera.
Clipping planes are useful f or rendering selected
portions of a scene that have a lot of complex
geometry. They can also help you create cutaway
views.
Clipping plane settings are part of the camera’s
creation parameters. The location of each clipping
plane is measured along the camera’s line of sight
(its local Z axis) in the current units for the scene.
Clipping planes are part of a camera’s
general
parameters (page 2–1218)
.
Viewports can also have clipping planes. You
set a viewport’s clipping planes via the
view por t
rig ht-click label (p age 3–774)
.
Codec
Short for
compressor/decompressor
.Analgorithm
for compressing and decompressing digital video
data, and the software that implements that
algorithm.
Cogniti ve Cont rol ler
In
crowd animation (page 2–1006)
,the
Cognitive
Cont roller editor (page 2–1057)
lets you sequence
different behaviors using state diagrams, where
conditionals written in MAXScript impose
changesinbehavior.Forexample,youcanspecify
that a character or object is to wander aimlessly
until it comes within a certain distance of another
object, whereupon it heads straight for that
object. Or you can specify that one character is to
avoid another only when the second character is
avoiding the first.