COLLADA/DAE (3D Exchange)
Open Beta将三维建筑导出为 COLLADA（.dae）格式，用于三维数据交换。采用 XML 格式，Blender、SketchUp、Google Earth 均支持。包含按建筑类型着色的材质。
主要特点
关于 COLLADA 格式
COLLADA (.dae) is an open XML format for exchanging 3D scenes, standardized by the Khronos Group and adopted as ISO/PAS 17506. It is older and heavier than glTF, but it remains the most reliable common language between SketchUp, Blender, Maya, 3ds Max and Google Earth — it is read practically everywhere, including old versions of programs.
A map is exported to DAE when city development is needed as an object in someone else's scene: to drop the context around a project into SketchUp, to assemble a 3D model for Google Earth, to move geometry between packages where FBX or glTF for some reason do not fit.
The output is a single .dae file: buildings extruded from OSM outlines by height or floor count, with materials colored by development type, and a flat base under them. The geometry is built in meters and centered on the selected area; there are no textures and no UV unwraps in the file — only colored materials.
打开 COLLADA 文件的程序
以下程序可以打开、编辑和处理从 OSM2CDR 导出的 COLLADA/DAE (3D Exchange)（.dae）文件：
格式规格
- 开放标准
- 支持 3D 坐标
- 无损（无质量损失）
- 存储要素属性
- 输出：1 个文件
- COLLADA .dae (Khronos / ISO/PAS 17506). XML 3D interchange. Opens in Blender, SketchUp, Maya, Unity.
谁在使用 COLLADA 地图
如何导出 COLLADA
导出后如何打开
- SketchUp — File → Import → choose the COLLADA (.dae) type; in the import settings enable merging coplanar faces so the model comes out lighter.
- Blender — File → Import → Collada (.dae); materials carry over as simple colors and can be replaced with your own right away.
- Google Earth Pro — the model is shown through KMZ: put the .dae into an archive together with a KML file that ties the model to coordinates.
- Maya, 3ds Max and Unity — import DAE out of the box; in Unity it is enough to put the file into the project folder, it will be picked up as an asset.
- Scale check — the scene is in meters; if the model arrives the wrong size, set the units in the import dialog instead of scaling the objects by hand.
COLLADA 格式的热门地图
导出 COLLADA/DAE (3D Exchange) 地图
从 OpenStreetMap 下载专业的 COLLADA 地图。即时生成，任意区域。
常见问题
与其他格式比较
相关格式
经常一起导出
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