Code Map

Fly over a codebase as a zoomable GPU treemap. A small demo app built with Makepad, a Rust UI framework that renders everything on the GPU. Inspired by Rik Arends' "Makepad Scope" demo.

• Every file is a box sized by its line count, grouped by folder. Zoom in far enough and the actual code appears inside the box.
• Respects .gitignore (the file list comes from git ls-files). Ignored entries show up as striped collapsed boxes and are only read when you click them.
• Search: type to highlight matches, Enter flies to the next one, Escape clears.
• Git heatmap: color by "Recently changed" or "Most changed" instead of file type.
• 3D city mode: folders become districts, files become towers with their code on the roof.

You need Rust (https://rustup.rs) and a Makepad checkout next to this repo, because Cargo.toml points at ../makepad:

mkdir makepad-demo && cd makepad-demo
git clone https://github.com/makepad/makepad.git
git -C makepad checkout a4ea2536a4ab223fb31e0282be923191230f44fe   # dev branch, 2026-09-15
git clone https://github.com/Peeter95/code-map.git

Makepad's API moves fast, so stick to the pinned commit above. Newer commits may or may not build.

cd code-map
cargo run --release -- /path/to/some/project          # 2D treemap
cargo run --release -- /path/to/some/project --3d     # start in 3D city mode

The first build compiles Makepad and takes a few minutes. Later builds are fast. Without a path it maps the current folder. It works best on a git repository: the ignore rules then match git status exactly and the heatmap has history to show. Outside git it falls back to a simple ignore list.

Headless check, no window, just scan statistics:

cargo run --release --bin scan -- /path/to/some/project [ignored/path ...]

Tested on macOS. Makepad also targets Windows, Linux and web, but this app has not been tried there.