Hello nice work but I'm afraid there is a critical bug when varying the grid size. I'm not sure you can output a tile image when using simultaneously two vario

Hello nice work but I'm afraid there is a critical bug when varying the grid size. I'm not sure you can output a tile image when using simultaneously two various grid sizes, as the periodic tiled image then should be of size greatest common multiplier of the grids size. What you see is not what you get. https://eschersket.ch/s/52e60da7c86c26cecc6b59bb7f9de9ad https://eschersket.ch/s/52e60da7c86c26cecc6b59bb7f9de9ad Try to see the tiled image or exported to zazzle, and lines are no longer continuous :( (By the way I also just notice sharing a zazzle url like : https://www.zazzle.com/eschersketch_wrapping_paper-256519193363075851 https://www.zazzle.com/eschersketch_wrapping_paper-256519193... is problematic because it is very tempting for the user to do so, but everyone is sharing the same link, and what is displayed have some caching issues), (Zazzle also gives a warning when the image is too big, Zazzle is also really expensive 33€ for 76cm x 1.80m) If you can sort the above issues, you can probably easily add some fractals symmetries :)