This example has pre-laoded paths from an external json file, click and drag to add more frames to the buffer.
press the 'c' key to clear the buffer
press the 's' key to save the buffer to an external file
press the 'p' key to show / hide the paths
press the 'r' key to reset the animation playback
press the 'f' key for forward playback
press the 'b' key for reverse (backwards) playback
press the 'a' key for alternating (palindrome / back-to-back loop) playback