Procedural Representation of Three-dimensional Objects
- 1 November 1976
- journal article
- Published by IBM in IBM Journal of Research and Development
- Vol. 20 (6) , 582-589
- https://doi.org/10.1147/rd.206.0582
Abstract
A system of PL/I procedures has been written that permits geometric objects to be described hierarchically. The objects are themselves represented as PL/I procedures, allowing very general use of variables. By effectively intercepting subprogram calls, the system provides a means of modifying the semantics associated with any object without modifying the object's procedural description.Keywords
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