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