[url=https://mathhombre.tumblr.com/post/775302740645691392]This design[/url] by Hihara really struck me with it's simplicity.[br][br]In this grid, the up angle is rotated by the output of f(x,y). So keep it integer valued on the integers for a nice grid. You can zoom in and out or pan to change the grid. It starts as the first quadrant.[br][br]See examples of some different functions below.