Quick Reference to Computer Graphics Terms

251 Pages·1995·1.569 MB·English

Q
uick
Reference to Computer
Graphics Terms
ROGER T. STEVENS
ACADEMIC PRESS PROFESSIONAL
A Division of Harcourt Brace & Company
Boston San Diego New York
London Sydney Tokyo Toronto
Ray Tracing of an Art Gallery. Image courtesy of Christopher D.
Watkins of ALGORITHM, Inc., Atlanta, GA
Ray Tracing of ”Break“. Image courtesy of Christopher D. Watkins
of ALGORITHM, Inc., Atlanta, GA
“Steel Mill.” A complex environment shaded using pre-
gressive refinement radiosity. Courtesy of John Wallace
and Stuart Feldman, PCG, Cornell University.
Antialiasing Example. Notice that the image on the left is of very
poor quality; this is due to having a discrete number of pixels to
represent the image. The image on the right shows the effects of
antialiasing. Image courtesy of Christopher D. Watkins of ALGO-
RITHM, Inc., Atlanta, GA.
Rendering. This image was created using Pixar’s
RenderMan® and VG Shaders™, VG Looks™ libraries
and the VALIS Prime Rib™ from the Valis Group.
Image copyright© 1992 the VALIS Group;
RenderMan® image created by the VALIS Group.
Dream Flight. This image was generated with the GenWorld toolkit, using
Graflist for the redendering. Copyright© 1988 by Brian Gardner. Reprinted by per-
mission.
Warping. This is an example of spline warp-
ing. Image courtesy of Christopher D.
Watkins of ALGORITHM, Inc., Atlanta, GA.
Warping. This is another example of
spline warping without the spline
mesh. Nothice that broadening the
man’s shoulders caused the bike’s
spokes to warp as well. Image
courtesy of Christopher D. Watkins
of ALGORITHM, Inc., Atlanta, GA.
Strange Attractor. Produced by iterating equations
x = sin (2.24y) – z cos (.43x), y = zsin (–.65x) – cos
(–2.43y), z = sin (x). Roger Stevens.
Lorenz Attractor. Produced by iterative equations
(see attractor, Lorenz). Roger Stevens.
Scene from the Computer Animation “Going Bananas.” All
of the objects in the room were modeled using an early
version of GENMOD. Rendering was accomplished by ray
tracing a polygonal approximation to each object. Image
courtesy of John Snyder, Generative Modeling For
Computer Graphics and CAD, Academic Press, 1992.
3-Dimensional Figure. 3-dimensional quadric shapes generated
by ray tracing. Roger Stevens.
Ray Traced Images. Ray traced images of cone and reflecting
and transparent spheres using POVRAY ray tracing program.
Roger Stevens.