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Subject: 
Re: LDForge - dev. plans and call for help
Newsgroups: 
lugnet.cad
Date: 
Wed, 31 Mar 2010 20:43:52 GMT
Viewed: 
21341 times
  
In lugnet.cad, Michael Heidemann wrote:
   In lugnet.cad, Santeri Piippo wrote:
  
Hi folks, - SNIP Polygon sorting - help needed

I need a little bit help, however. The polygon sorting algorithm I have right now does not work properly. Currently it’s done by calculating the center of the polygon by simply calculating the means of the coordinates.

How do existing programs - LDView in particular as it’s an OpenGL one too - sort polygons? I’d appreciate help tremendously here..
-SNIP-

At present I can not see the reason to sort polygons if you only want to display them.

cu mikeheide

  
-Santeri

The polygons have to be painted on the screen in the correct order in order to have the part displayed correctly. It’s not handled automatically. So I need an algorithm to sort the polygons.. and my current one doesn’t work right.

-Santeri



Message is in Reply To:
  Re: LDForge - dev. plans and call for help
 
(...) SNIP (...) -SNIP- At present I can not see the reason to sort polygons if you only want to display them. cu mikeheide (...) (15 years ago, 31-Mar-10, to lugnet.cad, FTX)

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