Topology in SEDRIS
SEDRIS adds additional Level 4 topology - “2.5D”
- Allows more than two faces to meet at an edge
- Supports faces “rising into air”
- Allows grouping and ordering of edges at nodes
- Preserves over-under ordering and segregated roadway connectivity at bridges
Use of topology is required for features
- There is no other way to attach Locations
- Can still be Level 0
Use of topology is optional for geometry
See Terrain Modeling Tutorial for more information on topology