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dsound: Make AngleBetweenVectorsRad when vectors have no magnitude.

This commit is contained in:
Maarten Lankhorst 2007-11-09 20:13:01 +01:00 committed by Alexandre Julliard
parent 545a774fcc
commit 3f965d582f
1 changed files with 3 additions and 0 deletions
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3
dlls/dsound/sound3d.c
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@ -110,6 +110,9 @@ static inline D3DVALUE AngleBetweenVectorsRad (const D3DVECTOR *a, const D3DVECT
product = ScalarProduct (a,b);
la = VectorMagnitude (a);
lb = VectorMagnitude (b);
if (!la || !lb)
return 0;
cos = product/(la*lb);
angle = acos(cos);
TRACE("angle between (%f,%f,%f) and (%f,%f,%f) = %f radians (%f degrees)\n", a->x, a->y, a->z, b->x,