tile57

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⚓ A high-performance, low-memory S-57/S-101/raster chart engine: vector tiles, S-101 styles, PNG, PDF, and C API.

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ZIP 다운로드

- pre-commit
- - ci.yml
  - docs.yml
  - release.yml
- dependabot.yml
- - asset.go
  - asset_test.go
  - bake.go
  - bundle_test.go
  - cell_test.go
  - cmem.go
  - compose.go
  - compose_test.go
  - coverage.go
  - errors.go
  - errors_test.go
  - go.mod
  - partition_test.go
  - README.md
  - render.go
  - s57meta.go
  - s57meta_test.go
  - style.go
  - style_linestyles_test.go
  - style_test.go
  - surface.go
  - tile57.go
  - tile57_test.go
- - bake-pool.mjs
  - chart-library.mjs
  - demo.html
  - engine-smoke.mjs
  - engine-worker.mjs
  - gpu-renderer.mjs
  - index.mjs
  - package.json
  - README.md
  - style-engine.wasm
  - style.d.ts
  - style.js
  - style_wasm.zig
  - tile57.mjs
  - wasi-shim.mjs
  - worker-rpc.mjs
- - parity.zig
- - build-wasm.sh
  - gen-assets.sh
  - parity-check.sh
- - settings.zig
- - architecture.md
  - c-api.md
  - cli.md
  - contributing.md
  - getting-started.md
  - gpu-rendering.md
  - installation.md
  - intro.md
  - limitations.md
  - raster-charts.md
  - rendering.md
  - tile-schema.md
  - wasm.md
  - zig-api.md
- .gitignore
- bun.lock
- docusaurus.config.js
- package.json
- README.md
- sidebars.js
- tile57.h
- tile57_diag.h
- bench-bake.sh
- brew-formula.sh
- gen-reference.sh
- gen-style.sh
- macho-align.sh
- package-release.sh
- zig-build-lib.sh
- - chart.frag
  - chart.frag.spv
  - chart.vert
  - chart.vert.spv
  - pattern.frag
  - pattern.frag.spv
  - pattern.vert
  - pattern.vert.spv
  - sdf.frag
  - sdf.frag.spv
  - sprite.frag
  - sprite.frag.spv
  - sprite.vert
  - sprite.vert.spv
- lookout.hlsl
- lookout.metal
- README.md
- - clip.zig
  - compose.zig
  - raster.zig
- - coverage.zig
- - boolean.zig
  - boolean_repro_test.zig
  - geometry.zig
  - partition.zig
  - plane.zig
- - iso8211.zig
- - lua_shim.c
  - portray.zig
  - portray_golden_test.zig
  - rules_embed.zig
  - wasi_stubs.c
  - wasm_sjlj_rt.c
- - bakebsb.zig
  - bsb.zig
  - mbtiles.zig
  - raster.zig
  - rasterchart.zig
- - ascii.zig
  - ascii_view_test.zig
  - batch.zig
  - canvas.zig
  - cb_canvas.zig
  - declutter.zig
  - font.zig
  - gpu.zig
  - inspect.zig
  - inspect_view_test.zig
  - kitty.zig
  - labelcache.zig
  - labeltier.zig
  - noop.zig
  - paint.zig
  - pdf.zig
  - pixel.zig
  - pixel_golden_test.zig
  - query.zig
  - raster.zig
  - render.zig
  - resolve.zig
  - sndfrm.zig
  - surface.zig
  - symbols.zig
  - tess.zig
  - vector.zig
- - adapter.zig
  - catalogue.zig
  - dataset.zig
  - instructions.zig
  - native.zig
  - s101.zig
- - catalog.zig
  - catalog_s101.zig
  - decode.zig
  - s57.zig
- - bake_enc.zig
  - lightreach.zig
  - linestyle.zig
  - replay.zig
  - scene.zig
  - symins.zig
- - glyph.zig
  - glyphpbf.zig
  - sprite.zig
  - svgraster.c
- - maplibre.zig
  - mariner.zig
  - style.zig
- - annapolis_z14.mvt
- - band.zig
  - filemap.zig
  - gzip.zig
  - mlt.zig
  - mvt.zig
  - pmtiles.zig
  - png.zig
  - tile.zig
  - tiles.zig
- auxfiles.zig
- bake_root.zig
- bundle.zig
- capi.zig
- chart.zig
- errors.zig
- lib_root.zig
- mvt_parity_test.zig
- root.zig
- tile57.zig
- wasm_root.zig
- zipsrc.zig
- ascii.zig
- assets.zig
- audit_holes.zig
- audit_pairs.zig
- bake.zig
- catalog.zig
- catalog_embed.zig
- cell.zig
- cells.zig
- common.zig
- compose_tile.zig
- explore.zig
- fcattrs.zig
- features.zig
- glyphs.zig
- gpudbg.zig
- inspect.zig
- main.zig
- objlcount.zig
- partdbg_png.zig
- pattern.zig
- raster.zig
- render.zig
- s101_coverage.zig
- s101_coverage_baseline.json
- s101dump.zig
- sprite.zig
- sprite_mln.zig
- style.zig
- tiledump.zig
- zoomsizes.zig
- - NotoSans-Bold.ttf
  - NotoSans-Italic.ttf
  - NotoSans-Regular.ttf
- - .bazelrc
  - .gitignore
  - alg_outline.md
  - LICENSE.txt
  - README.md
- - LICENSE.html
  - README
- - nanosvg.h
  - nanosvgrast.h
- - catalogue.json
  - permitted.json
  - s57codes.json
- - sqlite3.c
  - sqlite3.h
- - stb_image_write.h
  - stb_truetype.h
- S-101-Documentation-and-FC
- S-101_Portrayal-Catalogue
.gitignore
.gitmodules
build.zig
build.zig.zon
CLAUDE.md
LICENSE
README.md
THIRD_PARTY_LICENSES.md

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// repository documentation

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⚓ Official nautical charts, ready to draw. 
 tile57 reads the electronic charts hydrographic offices publish and draws
 them the way the standard says they should look: in your app, on your
 server, or right in the browser.

---

## Try it in your browser

The **[live demo](https://beetlebugorg.github.io/tile57/demo)** is an
S-57/S-101 chart viewer in one page. Grab a free chart zip from
[NOAA](https://charts.noaa.gov/ENCs/ENCs.shtml), drop it on the map, and the
page does the rest: it bakes the charts, keeps them in your browser, and draws
them with WebGPU. Pan, zoom, and rotate a whole chart library. Nothing is
uploaded and there is no server.

> [!WARNING]
> **Not for navigation.** This is not a certified navigation product. Do not use
> it to navigate. Refer to [Known limitations](docs/docs/limitations.md).

## What you can do with it

- **Build a chartplotter** for desktop, mobile, embedded, or pure web. Point
  tile57 at a folder of charts and it becomes one seamless, queryable map.
- **Quilt a whole library.** Charts at every scale stitch into one chart: the
  most detailed chart wins each stretch of water, the general chart fills
  around it, and a newer edition wins an overlap. Harbor to ocean is one
  continuous map, the way an ECDIS quilts.
- **Serve charts to any map client.** Bake once and serve standard vector
  tiles with a matching style; MapLibre draws them out of the box.
- **Draw at full speed.** tile57 hands your GPU a ready-to-draw scene. Pan,
  zoom, and rotate without rebuilding anything.
- **Put charts on paper.** Finished PNG images and vector PDF pages, straight
  from the source data.
- **See the world under the chart.** Satellite photos (MBTiles) and scanned
  raster charts (BSB/KAP) draw beneath the official one, which opens up so you
  can see through it. Every buoy, light, and depth stays on top.
- **Ask the chart questions.** What is under the cursor, what the chart says
  about it, and the notes and diagrams it carries.

The portrayal is official, not a look-alike: tile57 runs the IHO's own
portrayal rules against the chart's own records. It reads today's charts
(S-57) and tomorrow's (S-101), and it embeds anywhere: one small library
with no runtime dependencies.

## Start here

```sh
brew install beetlebugorg/tap/tile57        # or grab a binary from Releases

tile57 bake ENC_ROOT -o out/                # every chart -> its own archive
tile57 png ENC_ROOT --view -76.48,38.974,15 --size 1600x1200 -o chart.png
```

Binaries for macOS, Linux, and Windows are attached to every
[release](https://github.com/beetlebugorg/tile57/releases). Use the engine
from [C](https://beetlebugorg.github.io/tile57/c-api),
[Zig](https://beetlebugorg.github.io/tile57/zig-api),
[JavaScript](https://beetlebugorg.github.io/tile57/wasm), or
[Go](https://github.com/beetlebugorg/tile57/tree/main/bindings/go), or through
the [CLI](https://beetlebugorg.github.io/tile57/cli). The
[docs](https://beetlebugorg.github.io/tile57/) cover everything else.

## Build from source

```sh
git submodule update --init --recursive   # the vendored S-101 catalogue
zig build && zig build test               # needs Zig 0.16 only
```

## AI-first development

This project is built with AI assistance. Use AI tools freely. The most useful
contribution is a clear set of requirements, or a rough prototype of what you
want, rather than a patch. Refer to the
[contributing guide](docs/docs/contributing.md).

## License

tile57's own code is [MIT](LICENSE) © Jeremy Collins. It embeds the IHO S-101
Portrayal Catalogue (© IHO). It vendors nanosvg (zlib) and stb_image_write
(public domain). NOAA ENC charts are U.S. public domain and **not for
navigation**.

tile57

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