# Third-party notices

This viewer bundles third-party code. The notices below apply to the source
tree **and** to the built site (`dist2/`, deployed at
`https://dwg-dxf-viewer-sample.pages.dev/`), because the build embeds the
components listed here.

Served copies of the license texts live under
[`public/licenses/`](./public/licenses/) → `/licenses/…` on the deployed site.

---

## acadrust 0.4.1 — Mozilla Public License 2.0 — **MODIFIED**

| | |
|---|---|
| Component | `acadrust` (DWG/DXF parser, Rust) |
| Version | 0.4.1 |
| License | MPL-2.0 — full text: [`public/licenses/acadrust-MPL-2.0.txt`](./public/licenses/acadrust-MPL-2.0.txt) (`/licenses/acadrust-MPL-2.0.txt`) |
| Upstream | https://github.com/hakanaktt/acadrust · https://crates.io/crates/acadrust/0.4.1 |
| Upstream commit | `f249c2f816acf36ee51cd5533716bdd443c2517e` (from the crate's `.cargo_vcs_info.json`) |
| Author | Hakan AK |
| Shipped as | compiled into `assets/acadrust_dwg_bg-*.wasm` (Executable Form) |

**This copy is modified.** One file differs from the published crate:

```
src/io/dwg/dwg_stream_readers/object_reader/entities.rs   (read_mesh array-count bounds)
```

The modification bounds `read_mesh`'s array counts by the bits remaining in the
object stream instead of the blanket 100 000-item guard, which truncated and
thereby corrupted large SubD meshes.

### How to obtain the Source Code Form (MPL-2.0 §3.2)

1. Get the unmodified crate source — `cargo vendor`, or
   `https://crates.io/api/v1/crates/acadrust/0.4.1/download`, or the upstream
   commit above.
2. Apply [`public/licenses/acadrust-0.4.1-read_mesh.patch`](./public/licenses/acadrust-0.4.1-read_mesh.patch)
   (`/licenses/acadrust-0.4.1-read_mesh.patch` on the deployed site):

   ```bash
   tar xf acadrust-0.4.1.crate && cd acadrust-0.4.1
   patch -p1 < acadrust-0.4.1-read_mesh.patch
   ```

The result is the exact Source Code Form of the acadrust code compiled into the
shipped `.wasm`. Both the original and the modified file remain under MPL-2.0.

---

## dwg-wasm — MIT

The wasm-bindgen wrapper that turns acadrust output into this viewer's
`parseResult` (`hmwebviewer/rust/dwg-wasm/`). Our own code, MIT. MPL-2.0 §3.3
permits distributing this Larger Work under different terms as long as the
MPL-covered files above keep their license — which they do.

---

## Other components

| Component | License |
|---|---|
| three.js | MIT |
| dxf-parser | MIT |
| opentype.js | MIT |
| NanumGothic (`public/fonts/`) | SIL Open Font License 1.1 |
| Viewer2D / sample glue | MIT |