Draw custom shapes with audio in XY mode (to oscilloscope or laser)

Hi all,

I’m trying to display custom shapes (edges from a video) on an oscilloscope or a laser. For both devices i need to send two audio signals to my sound card output in XY mode. The audio part i can do it with Max/MSP.

Coming from a black and white edges image, how to compute this XY mode ? Do i need to vectorize my edges first ?

Thanks a lot !