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

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.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1970
Accession Number
AD0724744

Entities

People

  • Peter Woon

Organizations

  • New York University

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  • Air Platforms
  • Space

DTIC Thesaurus Topics

  • Circuits
  • Classification
  • Computations
  • Computer Graphics
  • Computer Programming
  • Computer Programs
  • Computer-Aided Design
  • Computers
  • Equations
  • Geometric Forms
  • Geometry
  • Graphics
  • Grids
  • Space Systems
  • Spacecraft
  • Three Dimensional
  • Two Dimensional

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  • Computer Science.
  • Computer Vision.