Algorithm for Automated Surface Modelling in Unigraphics

摘要

This paper describes programs written in Graphics Interactive ProgrammingLanguage (GRIP) to generate models in the Unigraphics CAD/CAM database of complex three dimensional geometry relating to human body shape. Data from human faceform models gathered by remote laser sensing was transferred to the CAD/CAM system. The large data files (30,000 points) were edited down to more manageable sizes of approximately 3,000 points. Programs were written in GRIP (a) to sort points into regular arrays, (b) to generate complete sets of orthogonal spline curves spanning the sets of points, (c) to create sets of sculptured surface patches covering the data and (d) to display and store the resulting information. The final surface renderings are shown as displays on a vector refresh terminal. GRIP source code is included as appendices. The software allows for the generation of sculptured surfaces from any regular, point data set. Keywords: Remote sensor scanning, Canada. (KR)