Free solid modeling software

[Sandy Pentland <PENTLAND@sri-iu.arpa>]

SuperSketch is a highly interactive (``real time'') solid modelling
system written in Common Lisp and running on Symbolics Lisp Machines.
It employs Superquadric modelling primitives (a superset of spheres,
cubes, cylinders, etc.)  together with first and second order
deformations and Boolean combination to achieve a suprising level of
modelling generality.

It is especially designed for AI applications; a description of some of
its uses may be found in the article ``Perceptual Organization and the
Representation of Natural Form,'' A. Pentland, Artificial Intelligence
28 (1986) 293-331.  A more complete description of the system is
available upon request.

Binary and partial source code is available free to degree-granting
academic institutions.  Full source code is available at extra cost.
Corporations may also purchase copies of this system with or without
full sources.

Copies of the SuperSketch system are available by completing and signing
the following form, and returning it to:
	Alex Pentland,  Room EK243
	SRI International
	333 Ravenswood Ave.
	Menlo Park, CA 94025

  **************************************************************

Name:
Department:
Institution:
Machine Serial Numbers:

    The undersigned hereby promises to ensure, to the best of his ability, 
that:

(1) the SuperSketch system and software will not be used by persons not
members of the above department, or on machines other than those listed,
or be used for other than academic research.

(2) the SuperSketch system and software will not be distributed to any other
person or institution.

(3) all users of the SuperSketch system understand that it is an
experimental software system and no warranty concerning its use or
function is given or implied.

(4) any research or work that makes use of the SuperSketch system will
cite its use and reference the article ``Perceptual Organization and the
Representation of Natural Form,'' A. Pentland, Artificial Intelligence
28 (1986) 293-331. 

		_______________
		(your signature)

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