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.
주요 기능
Quantized Mesh 형식 소개
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.
Quantized Mesh 파일을 여는 프로그램
다음 프로그램과 애플리케이션으로 OSM2CDR에서 내보낸 Cesium Quantized Mesh (.terrain)(.terrain) 파일을 열고 편집하고 작업할 수 있습니다:
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.
Quantized Mesh 지도 사용자
Quantized Mesh 내보내기 방법
내보낸 뒤 여는 방법
- 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.
Quantized Mesh 형식의 인기 지도
Cesium Quantized Mesh (.terrain) 지도 내보내기 받기
OpenStreetMap에서 전문가용 Quantized Mesh 지도를 다운로드하세요. 즉시 생성, 모든 영역 지원.