Abstract
Several solid representation schemes exist today in solid modelling. As none of them has properties that are uniformely better than any other, the need for modelling systems working on two or more different schemes which perform every operation in the most suitable scheme, become evident. Then it is necessary to provide geometric modelling systems with the ability of converting from one scheme into another.
Boundary Representation (BR) and Constructive Solid Geometry (CSG) are those representation schemes most widely used in Solid Modellers. Besides them Extended Octrees (EO) is a new representation scheme the importance of which is growing due to its capability of integrating spatial subdivision with boundary representation.
In this paper we present two scheme conversion algorithms. Firstly we give the conversion algorithm of BR representations of a restricted class of polyhedra into CSG binary trees and then, we give an algorithm which converts an EO into a binary CSG tree.
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© 1989 Springer-Verlag Berlin Heidelberg
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Juan, R. (1989). On Boundary to CSG and Extended Octrees to CSG Conversions. In: Straßer, W., Seidel, HP. (eds) Theory and Practice of Geometric Modeling. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-61542-9_22
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DOI: https://doi.org/10.1007/978-3-642-61542-9_22
Publisher Name: Springer, Berlin, Heidelberg
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