SFML community forums
Help => General => Topic started by: bmn on April 16, 2011, 04:56:56 am
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I've been trying to use the lightmanager (http://www.sfml-dev.org/wiki/fr/sources/lightmanager) from the French wiki and everything works fine unless my walls are perfectly horizontal or vertical. I'm guessing it's a divide by zero or similar mathematical error but I cannot seem to find it.
I've uploaded my source and compiled project Here (http://www.qfpost.com/download.do?get=4aef5bb71b26659140830529cb792961) so everybody can see the problem. The only change to the source is that unnecessary lines have been commented out.
(http://i53.tinypic.com/35hoifp.png)
The problem is with the lower of the two walls.
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Looks like you've removed one of the recursive calls to add triangles at the edges. I haven't looked at the source yet but will in a second.
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I'm pretty sure I didn't.
The only things I've removed are walls and lights from main.cpp and the blur shader effect
EDIT: The Original Project (http://holyspirit.alpha-arts.net/Autres/Holyspirit%20Light%20Effect%20Test%20NEW.rar) also seems to have this problem. Move your mouse around underneath the bottom-left walls and you should see this problem, so it's nothing I did. Perhaps the same happens with your rbSFML port of the lightmanager?
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So I've tried everything I can think of and haven't fixed it yet. Anybody got any solutions? If not, I'll start from scratch.
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Coincidentally the issue is being discussed on the French forum and has just been resolved, although the wiki has not been modified yet. Have a look at this thread:
http://www.sfml-dev.org/forum-fr/viewtopic.php?t=1682&start=15
Apparently some inequalities have to be modified for the expected result. The last post also says that this page contains a corrected code:
http://gregouar.developpez.com/tutoriels/jeux/moteur-lumieres-dynamiques-2d/
Hope it helps :)
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Aha, thanks much :D