A fast (or trying to be!) parser for Minecraft's NBT and Anvil formats.
Uses Rayon to utilise all cores of the machine. On a Ryzen 3600X 6-core, with a reasonably complex world, it can render a map of 256 regions in 9 seconds. That's 262k chunks, about 30k chunks/s.
bash
anvil render ~/path/to/world-dir --min-x=-1 --min-z=-1 --max-x=1 --max-z=1
For the library
toml
[dependencies]
fastnbt = "0.2.0"
For the anvil executable
bash
cargo install fastnbt-tools