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-rw-r--r--src/glu/sgi/libnurbs/interface/insurfeval.cc14
1 files changed, 7 insertions, 7 deletions
diff --git a/src/glu/sgi/libnurbs/interface/insurfeval.cc b/src/glu/sgi/libnurbs/interface/insurfeval.cc
index 4a2b5bacc3..58af2bcb63 100644
--- a/src/glu/sgi/libnurbs/interface/insurfeval.cc
+++ b/src/glu/sgi/libnurbs/interface/insurfeval.cc
@@ -31,10 +31,10 @@
** published by SGI, but has not been independently verified as being
** compliant with the OpenGL(R) version 1.2.1 Specification.
**
-** $Date: 2001/03/17 00:25:40 $ $Revision: 1.1 $
+** $Date: 2002/03/23 02:29:37 $ $Revision: 1.2 $
*/
/*
-** $Header: /home/krh/git/sync/mesa-cvs-repo/Mesa/src/glu/sgi/libnurbs/interface/insurfeval.cc,v 1.1 2001/03/17 00:25:40 brianp Exp $
+** $Header: /home/krh/git/sync/mesa-cvs-repo/Mesa/src/glu/sgi/libnurbs/interface/insurfeval.cc,v 1.2 2002/03/23 02:29:37 brianp Exp $
*/
#include "gluos.h"
@@ -528,11 +528,11 @@ void OpenGLSurfaceEvaluator::inComputeNormal2(REAL *pu, REAL *pv, REAL *n)
mag = sqrt(n[0]*n[0] + n[1]*n[1] + n[2]*n[2]);
- assert(mag > 0.0); /*better be some threshold*/
- n[0] /= mag;
- n[1] /= mag;
- n[2] /= mag;
-
+ if (mag > 0.0) {
+ n[0] /= mag;
+ n[1] /= mag;
+ n[2] /= mag;
+ }
}