9

922 Glossary
Composite
The mailbox with its shadow is composited with the wall and
sidewalk to make the finished scene.
(noun) A still image or a motion picture created
by overlaying one image or motion picture with
another.
(verb) To combine still images or motion pictures
by laying one over the other.
Compositing often makes use of an image’s alpha
channel (page 3–907).
Compound Materials
House on right uses a compou nd material.
(House on left uses the default standard material).
Compound (or complex) materials let you create a
material consisting of two or more sub-materials.
The rea l power in using compound materials is
that each sub-material can b e as complex as any
standard material.
The Multi/Sub-Object compound material lets you
assign different materials to different sub-objects,
at the sub-object level of your geometry.
Youloadorcreatecompoundmaterialsusingthe
Material/Map Browser .
For more information about the types of
compound materials you can create, refer to
Compound Materials (page 2–1587).
Cons tr ai ned Point
A NURBS Point that is dependent on either
another Point, Curve, or Surface, and whose
position is either on the parent object or relative
to it. The relative cases are XYZ-relative, along a
normal, or along a tangent (or set of tangents for a
surface-dependent constrained point).
Con tact Object
In Particle Flow (page 2–109), in the context of the
Shape Mark operator (page 2–183),acontactobject
is the object that will receive the marks created by
the operator.
Con tainers
Cont ainers are Track View items with multiple
branches that provide a complete definition of
something in your scene.
Cont ainer items that appear in Track View include:
• Materials definitions with all parameters, maps,
and sub-materials.