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fix for quaternion::toAngleAxis, angle was QNaN when W < -1

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git-svn-id: http://svn.code.sf.net/p/irrlicht/code/trunk@758 dfc29bdd-3216-0410-991c-e03cc46cb475
This commit is contained in:
bitplane 2007-07-04 12:32:23 +00:00
parent e9e8d4b01b
commit 2c14c00a58
1 changed files with 1 additions and 1 deletions
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include/quaternion.h
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@ -473,7 +473,7 @@ inline void quaternion::toAngleAxis(f32 &angle, core::vector3df &axis) const
{ {
f32 scale = sqrt (X*X + Y*Y + Z*Z); f32 scale = sqrt (X*X + Y*Y + Z*Z);
if (core::equals(scale,0.0f) || W > 1.0f) if (core::equals(scale,0.0f) || W > 1.0f || W < -1.0f)
{ {
angle = 0.0f; angle = 0.0f;
axis.X = 0.0f; axis.X = 0.0f;