Is there a way to access the z-coordinate from the camera calibration process? I wish to perform 3D vector math between calibration planes (i.e., the checkerboard planes shown when using showExtrinsics with plotCamera). The Calibration App shows a 3D plot of all the calibration checkerboards relative to the camera frame of reference (i.e., relative to the camera origin x,y,z = 0,0,0). Clearly, the Calibration App uses a z-coordinate to produce the plot. I would like to access the z-coordinate if available, or calculate it. Thanks for help with this question.