Accession Number : AD0724744

Title :   A Computer Procedure for Generating Visible-Line Drawings of Solids Bounded by Quadric Surfaces.

Descriptive Note : Technical rept.,

Corporate Author : NEW YORK UNIV BRONX DEPT OF ELECTRICAL ENGINEERING

Personal Author(s) : Woon,Peter

Report Date : DEC 1970

Pagination or Media Count : 93

Abstract : A computer procedure for generating line drawings of solid objects bounded by quadric surfaces is described. It embodies an efficient solution to the 'hidden-line' problem, that is, the problem of determining which parts of an opaque object are invisible when the object is viewed from a given vantage point. A view of a quadric object is represented by the orthographic projection of surface boundaries visible from the given vantage point. The procedure is implemented in a FORTRAN program and can be extended to do perspective drawing and shading; it may be used as the basis of a system for interactive computer-aided design of solids on a CRT display console. (Author)

Descriptors :   (*COMPUTER PROGRAMMING, GRAPHICS), COMPUTER LOGIC, ALGORITHMS, CATHODE RAY TUBES, SCREENS(DISPLAYS), THESES

Subject Categories : Computer Programming and Software
      Computer Hardware

Distribution Statement : APPROVED FOR PUBLIC RELEASE