176 Exploring Drafting
Some modeling and rendering programs
allow you to animate models so that they can
be shown in actual operation. Models created
in this manner are assigned movement
parameters for frame-by-frame animations.
Animated models are useful in the archi-
tectural fi eld. For example, an architectural
project can be presented with an animated tour
through a building for a design proposal.
One of the fastest-growing applications of
CAD technology is the use of computer-gener-
ated animation and imaging for special effects
in fi lms. Computer drawing and animation
programs are also used for imaging applica-
tions in the medical fi eld. While originally
conceived for engineering purposes, CAD-
based graphics are now used in a variety
of industries. Career opportunities in CAD
drafting and design will continue to expand
as the technology develops.
Figure 7-24 Realistic scenes such as this model of the Apollo spacecraft can be
created in an advanced rendering program with special tools used to apply lighting
and materials. (Discreet, a division of Autodesk)
Figure 7-23 CAD/CAM programs use CAD-
generated drawings to supply tool data for
manufacturing processes. (Courtesy of Mastercam/
CNC Software, Inc.)