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Tesselation of Mono Connected Non Convex Polygon

, 6 Feb 2002
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Tesselation of mono connected non convex polygon

Sample Image - PolyTry.jpg

Introduction

A simple alternative to OpenGL polygon tesselation callback. You can focus on file triangle.h that contain the class to evaluate convexity of polygon and tesselate the polygon. No extra points are inserted. You can work only with planar polygon also in 3D.

Every suggestion in order to speed up the class and create better tesselation ('better' triangles) is appreciated.

History

  • 6th February, 2002: Initial post

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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About the Author

Peppino Sbargzeguti

United States United States
No Biography provided

Comments and Discussions

 
GeneralBetter tesselation Pinmemberjeckle8-Feb-02 9:00 
Hi ,
 
Ok Delauney rules in good tesselation. But in the case of non-convex poly you have to use the constrained form of the algorithm (DCT). You can achieve good tesselation without get rid of your algorithm :
as a post - process phase you can "mimimize" the edge size of convex quads. It's like use the turn edge tools in 3ds max. In this way, long triangles are converted in more equilaterals ones.
If i got time i'll try and send it to you.

GeneralRe: Better tesselation Pinmemberpepito10-Feb-02 22:05 
GeneralRe: Better tesselation Pinmemberjeckle11-Feb-02 10:46 
GeneralRe: Better tesselation PinmemberRick York11-Feb-02 10:53 

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