Contour tracing by piecewise linear approximations

Author:

Dobkin David P.1,Wilks Allan R.2,Levy Silvio V. F.1,Thurston William P.1

Affiliation:

1. Princeton Univ., Princeton, NJ

2. AT&T Bell Labs, Murray Hill, NJ

Abstract

We present a method for tracing a curve that is represented as the contour of a function in Euclidean space of any dimension. The method proceeds locally by following the intersections of the contour with the facets of a triangulation of space. The algorithm does not fail in the presence of high curvature of the contour; it accumulates essentially no round-off error and has a well-defined integer test for detecting a loop. In developing the algorithm, we explore the nature of a particular class of triangulations of Euclidean space, namely, those generated by reflections.

Publisher

Association for Computing Machinery (ACM)

Subject

Computer Graphics and Computer-Aided Design

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