33 lines
6.1 KiB
Markdown
33 lines
6.1 KiB
Markdown
# Dependencies
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Cesium Native relies on a number of third-party dependencies. These dependencies are automatically resolved and built using [vcpkg](https://vcpkg.io/) at compile time.
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| Dependency | Usage |
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| ------------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------- |
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| [ada](https://github.com/ada-url/ada) | Used to parse and manipulate URIs. |
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| [Async++](https://github.com/Amanieu/asyncplusplus) | Used by CesiumAsync for cross-platform concurrency. |
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| [Catch2](https://github.com/catchorg/Catch2) | Test framework used by CesiumNativeTests. |
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| [draco](https://github.com/google/draco) | Required to decode meshes and point clouds compressed with Draco. |
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| [earcut](https://github.com/mapbox/earcut.hpp) | Polygon triangulation library for used by CartographicPolygon. |
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| [expected-lite](https://github.com/martinmoene/expected-lite) | Implementation of the `std::expected` proposal for returning either an expected value or an error value. |
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| [glm](https://github.com/g-truc/glm) | C++ mathematics library powering the high-precision math needed for geospatial software. |
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| [meshoptimizer](https://github.com/zeux/meshoptimizer) | Required to decode meshes compressed with meshoptimizer. |
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| [httplib](https://github.com/yhirose/cpp-httplib) | Used by CesiumIonClient to interact with the Cesium ion REST API. |
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| [Ktx](https://github.com/CesiumGS/KTX-Software) | Required to load KTX GPU compressed textures. |
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| [libmorton](https://github.com/Forceflow/libmorton) | Implementation of Morton codes used for implicit tiling. |
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| [libjpeg-turbo](https://github.com/libjpeg-turbo/libjpeg-turbo) | Decodes JPEG images. |
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| [libwebp](https://github.com/webmproject/libwebp) | Decodes WebP images. |
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| [modp_b64](https://github.com/chromium/chromium/tree/15996b5d2322b634f4197447b10289bddc2b0b32/third_party/modp_b64) | Decodes and encodes base64. |
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| [OpenSSL](https://github.com/openssl/openssl) | Required by s2geometry, and also used to generate unique authorization tokens for authenticating with Cesium ion. |
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| [PicoSHA2](https://okdshin/PicoSHA2) | Generates SHA256 hashes for use with the Cesium ion REST API. |
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| [RapidJSON](https://github.com/Tencent/rapidjson) | For JSON reading and writing. |
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| [s2geometry](https://github.com/google/s2geometry) | Spatial indexing library designed for geospatial use and required by some tilesets. |
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| [spdlog](https://github.com/gabime/spdlog) | Logging. |
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| [sqlite3](https://www.sqlite.org/index.html) | Used to cache HTTP responses. |
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| [stb_image](https://github.com/nothings/stb/blob/master/stb_image.h) | A simple image loader. |
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| [tinyxml2](https://github.com/leethomason/tinyxml2) | XML parser for interacting with XML APIs such as those implementing the Web Map Service standard. |
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| [zlib-ng](https://github.com/zlib-ng/zlib-ng) | An optimized zlib implementation for working with Gzipped data. |
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The following chart illustrates the connections between the Cesium Native libraries and third-party dependencies:
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\svg-interactive{dependency-graph, 600px} |