You just draw something on top canvas (can be multi strokes).
Then draw something on side canvas (can also be multi strokes).
Then click play (with other settings to change if you want like speed of side drawing compared to top drawing default is it draws side drawing twice every top drawing).
The top drawing controls the horizontal (X) of the colored drawing and side drawing controls the vertical (Y) of the colored drawing (shown by dotted lines).

I vibe coded this after seeing a youtube short showing only circles going at different speeds, and I wondered what I would get if i used other drawings/shapes that aren't circles (more fun with hand drawn).

demo:





created using this tool: https://yourquietfriend.blogspot.com/20 ... mator.html