You are here: Working with FME Desktop > Understanding FME Geometry > FME Geometry Model > Surfaces (IFMESurface)
Surfaces are geometries that have a planar area. Surfaces must be 3D (x,y,z).
|A face is one example of a surface feature. It is a planar polygon or donut stored as a true 3D feature.|
|Some surfaces contain holes, in much the same way as a donut area.|
The boundaries of surfaces are areas.
Simple surfaces are composed of a single component, while composite surfaces may be composed of several surface components.
- fme_geometry = fme_aggregate
- fme_type = fme_surface