//-------------------------------------------------------------------------------
// @ IvQuat::Normalize()
//-------------------------------------------------------------------------------
// Set to unit quaternion
//-------------------------------------------------------------------------------
void
IvQuat::Normalize()
{
float lengthsq = w*w + x*x + y*y + z*z;
if ( ::IsZero( lengthsq ) )
{
Zero();
}
else
{
float factor = IvInvSqrt( lengthsq );
w *= factor;
x *= factor;
y *= factor;
z *= factor;
}
} // End of IvQuat::Normalize()
//Set to unit vector
void CVector3::Normalize()
{
float lengthsq = LengthSquared();
if(::IsZero(lengthsq))
{
Zero();
}
else
{
*this *= IvInvSqrt(lengthsq);
/*
The following is the expanded version of the above line:
float factor = IvInvSqrt( lengthsq );
x *= factor;
y *= factor;
z *= factor;
*/
}
}