An interactive computer graphics approach to surface representation

  • Authors:
  • Sheng-Chuan Wu;John F. Abel;Donald P. Greenberg

  • Affiliations:
  • Cornell Univ., Ithaca, NY;Cornell Univ., Ithaca, NY;Cornell Univ., Ithaca, NY

  • Venue:
  • Communications of the ACM
  • Year:
  • 1977

Quantified Score

Hi-index 48.22

Visualization

Abstract

An interactive computer graphics method has been developed for the rapid generation of arbitrary shaped three-dimensional surfaces. The method is a synthesis of spline theory and algorithms, an interactive means for man-machine communication, and software for static or dynamic graphics display. The basic technique employed is a modified lofting method in which sectional curves are represented by uniform B-splines and the surface is interpolated between sections by Cardinal splines. Among the features of this method are algorithm, which enable interactive modification of the B-spline representation of the sectional curves. At all stages of the process, the spatial information is graphically displayed to the user. Complex surfaces can be created by the combination of a number of shapes that have been separately generated and automatically joined. The system has been successfully interfaced to a variety of analytical routines for structural, medical and graphical applications.