[Bf-blender-cvs] SVN commit: /data/svn/bf-blender [50553] trunk/blender/source/blender/ blenlib/intern/math_geom.c: Fix #32031: particle distribution on degenerate faces could give NaN values,

[Brecht Van Lommel]

Revision: 50553
          http://projects.blender.org/scm/viewvc.php?view=rev&root=bf-blender&revision=50553
Author:   blendix
Date:     2012-09-12 13:06:28 +0000 (Wed, 12 Sep 2012)
Log Message:
-----------
Fix #32031: particle distribution on degenerate faces could give NaN values,
which in this case caused NaN values in render lighting.

Modified Paths:
--------------
    trunk/blender/source/blender/blenlib/intern/math_geom.c

Modified: trunk/blender/source/blender/blenlib/intern/math_geom.c
===================================================================
--- trunk/blender/source/blender/blenlib/intern/math_geom.c	2012-09-12 11:25:47 UTC (rev 50552)
+++ trunk/blender/source/blender/blenlib/intern/math_geom.c	2012-09-12 13:06:28 UTC (rev 50553)
@@ -2229,7 +2229,7 @@
 		t2 = mean_value_half_tan_v3(co, vmid, vnext);
 
 		len = len_v3v3(co, vmid);
-		w[i] = (t1 + t2) / len;
+		w[i] = (len != 0.0f)? (t1 + t2) / len: 0.0f;
 		totweight += w[i];
 	}
 
@@ -2257,7 +2257,7 @@
 		t2 = mean_value_half_tan_v2(co, vmid, vnext);
 
 		len = len_v2v2(co, vmid);
-		w[i] = (t1 + t2) / len;
+		w[i] = (len != 0.0f)? (t1 + t2) / len: 0.0f;
 		totweight += w[i];
 	}