Not exactly what you are requesting, but I added truchet patterns to a monotile renderer a while back. See here https://www.johansivertsen.com/post/monotile/ ht

Not exactly what you are requesting, but I added truchet patterns to a monotile renderer a while back. See here https://www.johansivertsen.com/post/monotile/ https://www.johansivertsen.com/post/monotile/ The drawing tool is here: https://www.johansivertsen.com/customhatviz/app.html https://www.johansivertsen.com/customhatviz/app.html Press 'build supertiles' a few times and enable the truchet overlay.