A Method for the Representation, Evaluation and Display of CSG Models in PHIGS and PHIGS+
Manjula Patel · Computer Graphics Forum · 1989
Abstract The Programmer's Hierarchical Interactive Graphics System (PHIGS) is about to become a standard graphics system † which caters for the definition, display and modification of two and three‐dimensional graphical data. PHIGS, however, is mainly a wireframe system, and the PHIGS+, extensions to it have been put forward to allow the incorporation of shaded 3D graphics into PHIGS., One area that is important to a large constituency and which has so far not been considered in PHIGS, and PHIGS+, is that of solid modelling. This paper addresses one aspect of solid modelling by describing a simple method for the representation, evaluation and display of Constructive Solid Geometry (CSG) models in PHIGS, and PHIGS+..