private void TestRotations() { Vector4 v = new Vector4(1, 1, 1, 1); Quaternion q = new Quaternion(Yaw, Pitch, Roll); Vector4 r = q.RotatePt(v); DXVec4 dxv = new DXVec4(1, 1, 1, 1); DXQuat dxq = DXQuat.RotationYawPitchRoll(Yaw, Pitch, Roll); DXMatrix dxm = DXMatrix.RotationQuaternion(dxq); DXVec4 dxr = DXVec4.Transform(dxv, dxm); }