//判读点是否在线上面(各种线的特性需要考虑)
Bool HawkLine3D::IsPointOnLine(const HawkVector3D& oVec) const
{
HawkVector3D oTmp = oVec - Point;
oTmp.Normalize();
return (oTmp == Direction) || (oTmp == -Direction);
}
void HawkQuaternion::GetAsAxisAngle(HawkVector3D& vAxis,Float& fRadian) const
{
//cos(A/2)+sin(A/2)*(x*i+y*j+z*k)
Float fSqrLength = X*X+Y*Y+Z*Z;
if (fSqrLength > 0.0f)
{
fRadian = 2.0f*HawkMath::Acos(W);
Float fInvLength = HawkMath::Invsqrt(fSqrLength);
vAxis.X = X*fInvLength;
vAxis.Y = Y*fInvLength;
vAxis.Z = Z*fInvLength;
}
else
{
fRadian = 0.0f;
vAxis.X = 1.0f;
vAxis.Y = 0.0f;
vAxis.Z = 0.0f;
}
vAxis.Normalize();
}