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Line 1: {{db-afc\|ts=2019-03-11T06:11:31Z\|help=off}} Geometric objects on a digital computer are composed of two types of data: numerical and combinatorial. Examples of numerical data include the Cartesian coordinates of a point in 3-space, the length of a line segment connecting two such points, or the angle between two such line segments. Examples of combinatorial information include grouping two points as an edge, grouping a collection of edges as a face, or grouping a collection of faces as a surface.

Robust geometric computation: Difference between revisions