docs: public static CameraPinhole createIntrinsic(int width, int height, double hfov, double vfov) {
  		CameraPinhole intrinsic = new CameraPinhole();
  		intrinsic.width = width;
  		intrinsic.height = height;
  		intrinsic.cx = width / 2;
  		intrinsic.cy = height / 2;
  		intrinsic.fx = intrinsic.cx / Math.tan(UtilAngle.degreeToRadian(hfov/2.0));
  		intrinsic.fy = intrinsic.cy / Math.tan(UtilAngle.degreeToRadian(vfov/2.0));
  
  		return intrinsic;
  	}