[comp.graphics] Looking for Public Domain Solid Modeling Software

reiner@slithy-tove.shs.ohio-state.edu (Reiner Wilhelms) (08/09/90)

I am just reading the book by Ma:rtti Mantyla:, 
"An Introduction to Solid Modeling", Computer Science Press, 1988
(a: stands for umlaut a)

It contains a lot of C-code for implementing the Euler operators 
and other geometric modeling operations built on top of the
Euler operators. I am thinking of building some modified version 
of this published code, and extend it to some do-it-yourself
program for solid modeling. I am pretty sure that I am not
the first and not the last who wants to reinvent the wheel.
So: Does anyone know if there is public domain
software available for this kind of solid modeling? I am also 
interested in public domain software for surface modeling,
using B-spline or weighted Bezier methods. 

My other question is concerning the PHIGS standard. 
Is there a newer book available that really makes 
PHIGS a little more transparent? So far I just have the 
Reference Manual and some obsolete sources which
refer to very early versions of it. 

Thank you in advance for any hints. 

Reiner Wilhelms
			     
Please send e-mail, I want to make sure 
that I don't miss any answer.