Accession Number : AD0750743

Title :   Geometric Concepts for Computer Graphics.

Descriptive Note : Final rept. 1 Sep 71-31 Aug 72,

Corporate Author : NAVAL ACADEMY ANNAPOLIS MD DIV OF ENGINEERING AND WEAPONS

Personal Author(s) : Adams,J. Alan

Report Date : SEP 1972

Pagination or Media Count : 236

Abstract : The report presents a discussion of existing techniques for representing points, lines, curves, and surfaces within a digital computer, as well as computer software procedures for manipulating and displaying computer output in graphical form. Mathematical techniques for producing axonometric and perspective views are given along with generalized techniques for rotation, translation, and scaling of geometric figures. Curve definition procedures for both explicit and parametric representation are presented for both 2-D and 3-D curves. Curve definition techniques include the use of conic sections, circular arc interpolation, cubic splines, parabolic blending, Bezier curves, and (RB sup 3) curves based upon B-splines. (Author)

Descriptors :   (*COMPUTER PROGRAMMING, GRAPHICS), MATRICES(MATHEMATICS), TRANSFORMATIONS(MATHEMATICS), VECTOR ANALYSIS, TENSOR ANALYSIS, INTERPOLATION, INTEGRALS, NUMERICAL INTEGRATION, CURVE FITTING, PLOTTERS

Subject Categories : Computer Programming and Software
      Computer Hardware

Distribution Statement : APPROVED FOR PUBLIC RELEASE