3D Tiles --笔记

1、Data types and formats

• 有哪些数据可以支持展示
  • Photogrammetry or LiDAR-derived mesh
  • BIM, CAD, or other 3D model
  • Point Clouds
  • 3D Buildings
  • Terrain
  • Satellite or Drone Imagery

2、3D building

Importing

Cesium ion tiles your buildings into 3D Tiles when you upload them. Here are sample files you can download to try this out:

• KML/COLLADA
• CityGML

1. On the My Assets tab of Cesium ion, press Add Data to upload your model.
2. Select KML/COLLADA (tile as 3D Tiles) or CityGML.
3. Select the options you want to apply, including clamping the buildings to terrain.

Select the Clamp to terrain option to move individual buildings down to the underlying ground height during tiling. Use this option to get accurate real-world building heights, or if you are visualizing your buildings on top of a 3D terrain layer.

3、3D models

• 3Dbuilding除了3Dtiles外还支持的数据格式

Format	File extensions
Wavefront OBJ	.obj
Filmbox	.fbx
Digital Asset Exchange	.dae
glTF	.gltf
Binary glTF	.glb

• Files may be zipped.
• Your model must use local coordinates (the geometry must be centered around the origin).
• Units are assumed to be in meters.