Polygon inflation for animated models: a method for the extrusion of arbitrary polygon meshes

C.W.A.M. Overveld, van, B. Wyvill

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Abstract

A method for the extrusion of arbitrary polygon meshes is introduced. This method can be applied to model a large class of complex 3-D closed surfaces. It consists of defining a (typically small) set of connected polygons in 3-D that form a skeleton of the final object, and assigning extrusion distances to all polygons. The two sides of a polygon may have different extrusion distances. An automatic extrusion algorithm constructs a closed 3-D polygon mesh around the skeleton, making use of the indicated extrusion distances. We call this process inflating the polygons of the skeleton. Unlike traditional extrusion, the method works for non-planar skeleton configurations, and it also supports branching skeleton structures (i.e. edges with more than two incident polygons). © 1997 by John Wiley & Sons, Ltd.
Original languageEnglish
Pages (from-to)3-16
JournalJournal of Visualization and Computer Animation
Volume8
Issue number1
DOIs
Publication statusPublished - 1997

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