github uv post-processing annual tree ring quad tree detail old view quad tree text spread unshift pattern○ unshift pattern☐ torusknot star Lissajous curve Fake fluid pattern shading dither gyroid mandelbrot set アルキメデス立体 Conway's Game of Life hash shape cross menger sponge voronoi 山岳 quadtree + pmod 👾 polar👾 (👾<<16)+👾 IFS phantom mode 0x👾👾u learning bit calc polar coords 120bpm hemisphere Cyclic Noise