[ODE] Trimesh / Box - Zero Length Normal fix

[David Walters]

> I've submitted the box/mesh zero length normal patch to SVN

Okay, just a quick follow up because the file I checked in makes for a
severly obfuscated patch due to the automatic removal of whitespace at
the end of lines by Textpad.

Sorry about that... the change made is as follows:


collision_trimesh_box.cpp, Line #279:

+
+  // ===== Begin Patch by Francisco Leon, 2006/10/28 =====
+
+  // Fixed Null Normal. This prevents boxes passing
+  // through trimeshes at certain contact angles
+
+  fMin = vNormal[0] * vNormal[0] +
+                vNormal[1] * vNormal[1] +
+                vNormal[2] * vNormal[2];
+
+  if ( fMin <= dEpsilon ) /// THIS NORMAL WOULD BE DANGEROUS
+         return true;
+
+  // ===== Ending Patch by Francisco Leon =====
+
+

Regards,
David