Quaternion.Ln() Method (Microsoft.DirectX)
Calculates the natural logarithm.
Definition
Visual Basic Public Sub Ln() C# public void Ln(); C++ public:
void Ln();JScript public function Ln();
Remarks
The Ln method works only for unit quaternions.
A unit quaternion is defined by the following example.
Q == (cos(theta), sin(theta) * v) where |v| = 1 The natural logarithm of Q is ln(Q) = (0, theta * v)
See Also