This visualizer is built with WebAssembly and yew.
Due to the limitations of WebAssembly, the packing algorithm is single-threaded. So it may takes a while to pack for large problem set.
After install make and cargo-web simply run make to build and use caddy or any others http server to serve files in build folder.
You can input problem set in this format:
height,depth,width,count
4,4,4,20
3,2,1,10
7,3,5,10
6,7,4,20