Re: Depth-Sorting Axis-Aligned Boxes

Mike Welsh <[email protected]>
Newsgroups gmane.games.devel.algorithms
Message-ID <[email protected]>
On Mon, Aug 3, 2009 at 12:05 AM, metanet software <[email protected]>wrote:

> I've attached an example demonstrating what I'd like to achieve: the scene
> is made of 9 faces (3 objects of 3 faces each), a green box resting on a red
> "desk", underneath which there's a blue box.
>

Unfortunately, this is the classic polygon sorting problem. Even with the
constraint of axis-aligned faces, I don't think you can find a solution that
works for every case without splitting polygons using BSP or other trickery.
I've attached a terrible diagram of a case where no sort order can produce
the correct result.
Take care,
-- 
Michael Welsh
[email protected]

------------------------------------------------------------------------------
Let Crystal Reports handle the reporting - Free Crystal Reports 2008 30-Day 
trial. Simplify your report design, integration and deployment - and focus on 
what you do best, core application coding. Discover what's new with 
Crystal Reports now.  http://p.sf.net/sfu/bobj-july

_______________________________________________
GDAlgorithms-list mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/gdalgorithms-list
Archives:
http://sourceforge.net/mailarchive/forum.php?forum_name=gdalgorithms-list
polys.png (image/png, 1 KB) - not displayed
lmpx.com only provides a reader for public news (NNTP) servers. It is not affiliated with the servers or forums shown here and is not responsible for the content of articles, which is written by their respective authors.