João-de-Barro: uma proposta de sistema híbrido para modelagem de sólidos.

Abstract

This text is part of a research work which proposes a solid modeling system with hybrid architecture. The system, so called "Sistema Joao-de-Barro", combines the techniques known as Boundary Representation and Constructive Solid Geometry for representing the models. Among the modeling tools implemented we can mention geometrical transformations, viewer positioning and the boolean set operations of union, intersection and difference. The system also implements visualization techniques like hidden-surface elimination, perspective projection and ilumination.