public Vector PixelToRectilinear(Image.CameraType camera, Vector pixel) {
   LEAP_VECTOR pixelStruct = new LEAP_VECTOR(pixel);
   LEAP_VECTOR ray = LeapC.LeapPixelToRectilinear(_leapConnection,
          (camera == Image.CameraType.LEFT ?
          eLeapPerspectiveType.eLeapPerspectiveType_stereo_left :
          eLeapPerspectiveType.eLeapPerspectiveType_stereo_right),
          pixelStruct);
   return new Vector(ray.x, ray.y, ray.z);
 }