This uses the 'marching squares' algorithm to draw the isolines of an implicit graph (round(sin(x)+sin(y))=0). At some point I will make a V2 with a parser but this is 314 blocks so I had to leave it. I also made metaballs with this engine, so I'll share that too if you want.
https://turbowarp.org/714883398 https://en.wikipedia.org/wiki/Marching_squares
