Cesium Quantized Mesh (.terrain)
Open BetaQuantized Mesh is Cesium's binary terrain format for streaming 3D relief into a browser: a triangle mesh with vertices quantized to 16 bits and edge indices for seamless tile stitching. On osm2cdr the export works like this: we return one valid .terrain tile for the chosen area — a regular 65x65 grid (4225 vertices, 8192 triangles). Elevations are read from the global Copernicus DEM GLO-30 (about 30 m per sample); where there is no coverage (ocean, polar latitudes) the tile honestly becomes flat at sea level. This is a single level of detail tile for a quick prototype, not a multi-level (multi-LoD) pyramid. Opens in CesiumJS, Cesium for Unreal/Unity.
OpenStreetMap data as of 24 August 2026 · 46 days ago
Vipengele Muhimu
Kuhusu Muundo wa Quantized Mesh
Quantized Mesh is a binary terrain tile format invented for CesiumJS: a triangle mesh whose vertex coordinates are compressed to 16 bits within the tile, plus lists of edge vertices for seamless stitching with neighbours. The quantized-mesh-1.0 specification is open, but in practice the format lives inside the Cesium ecosystem.
The export exists to get the terrain of your area quickly for a 3D scene: look at the shape of the landscape, put terrain under a model in Cesium for Unreal or Unity, test an idea before rolling out a full tiling pipeline.
What you get: one .terrain tile for the chosen area — a regular grid of 65x65 samples, that is 4225 vertices and 8192 triangles, with an 88-byte header and edge indices per the specification. Elevations are taken from the global Copernicus DEM terrain model (GLO-30, about 30 meters per sample); where there is no coverage — ocean, polar latitudes — the cells are honestly filled with sea level and the tile becomes flat.
This is a tile of a single level of detail, not a worldwide tile pyramid. If you need working multi-level terrain over a large territory, build it in Cesium ion or cesium-terrain-builder on your own elevation source.
Programu Gani Hufungua Faili za Quantized Mesh
Programu na programu-tumizi zifuatazo zinaweza kufungua, kuhariri, na kufanya kazi na faili za Cesium Quantized Mesh (.terrain) (.terrain) zilizosafirishwa kutoka OSM2CDR:
Format specifications
- Open standard
- 3D coordinates supported
- Lossless (no quality loss)
- No attributes
- Output: 1 file
- One well-formed Quantized Mesh .terrain tile built on a 65x65 sample grid (4225 vertices, 8192 triangles) with heights from Copernicus DEM GLO-30/90; flat sea-level tile where coverage is absent.
Nani Hutumia Ramani za Quantized Mesh
Jinsi ya Kusafirisha Quantized Mesh
Jinsi ya Kufungua Baada ya Kuhamisha
- CesiumJS — attach the tile as your own terrain provider or load it into Sandcastle: the fastest way to see the result in a browser.
- Cesium for Unreal and Cesium for Unity — here Quantized Mesh is the native terrain source; the tile is placed into the scene as the base under buildings and objects.
- Cesium ion — if you need full multi-level terrain over a large territory: upload your own elevation source and the service will build the tile pyramid itself.
- cesium-terrain-builder — the same result on your own, on your own server, from a GeoTIFF with elevations.
- Checking the file — the tile is binary, opening it in a text editor is pointless: go by the file size and by how it landed in the scene.
Ramani maarufu katika Quantized Mesh
Pata usafirishaji wa ramani za Cesium Quantized Mesh (.terrain)
Pakua ramani za kitaalamu za Quantized Mesh kutoka OpenStreetMap. Uzalishaji wa papo hapo, eneo lolote.
Maswali Yanayoulizwa Mara kwa Mara
What people who already downloaded say
Reviews are quoted in the language their authors wrote them in.
Наконец-то карты можно скачать в векторе. Автору спасибо!
всё очень круто, не ожидал что просто приду и скачаю кусочек карты! спасибо!!!
ОГРОМНОЕ СПАСИБО!!! ОЧЕНЬ ХОРОШАЯ ПРОГРАММА!!! Искал карту в векторе на стыке 3 стран - очень помогло!!
Ты - молодец! Сделал большое и нужное дело!
Иван, спасибо огромное! Не просто человек - Человечище!
иван, вы просто чудо. Спасибо за неимоверно крутой сервис