Click here to Skip to main content
Click here to Skip to main content

Tesselation of Mono Connected Non Convex Polygon

, 6 Feb 2002
Rate this:
Please Sign up or sign in to vote.
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)

Share

About the Author

Peppino Sbargzeguti

United States United States
No Biography provided

Comments and Discussions

 
GeneralRobust tesselation PinmemberSkavenger1-Jul-05 22:04 
GeneralRe: Robust tesselation [modified] PinmemberLiu Guoping9-Aug-06 15:51 
AnswerRe: Robust tesselation PinmemberSkavenger310-Aug-06 1:42 
Hey Liu,
I have read all libtess sources/docs, and got inspired during the writing of my tessellator, as weel as for another good paper, that explain the sweepline algorithm in details ( http://www.cs.ucsb.edu/~suri/cs235/Triangulation.pdf ).So, yes, i'll follow your suggestion adding the greetings to SGI.
My decision to rewite a tesselator instead of using the libtess ones is due to the fact that i had a try to be more robust and support more degeneration cases, without to introduce overheads of any kind.
Anyway, now, i'm oriented in a direction to use OpenGL drawing tecniques that don't need of the tesselation step, beacuse this step is too expensive, and it needs a too high robustness level.
Just for curiosity,
Are you using Amanith? Do u use the tessellation for drawing purposes or for something other?
( my mail is: mfabbri ]at[ amanith ]dot[ org )

General General    News News    Suggestion Suggestion    Question Question    Bug Bug    Answer Answer    Joke Joke    Rant Rant    Admin Admin   

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.

| Advertise | Privacy | Mobile
Web03 | 2.8.140827.1 | Last Updated 7 Feb 2002
Article Copyright 2002 by Peppino Sbargzeguti
Everything else Copyright © CodeProject, 1999-2014
Terms of Service
Layout: fixed | fluid