A scene consists of various types of scene objects organized in corresponding layers:
Shape Layer | Contains static shapes, typically used as building footprints for generation of CGA models. |
Graph Layer | Contains graph and street networks, blocks, dynamic shapes (street shapes, building footprints), and generated models. |
Static Model Layer | Containsstatic models, such as Collada files. |
Map Layer | Contains maps (images) and can be used to globally control various parameters for scene objects. The scene terrain is also created using a map layer. |
Analysis Layer | Contains analysis tools such as viewshed or view corridor. |
Guide Layer | Contains guides created to draw parallel or perpendicular with existing objects. |
Each layer type can hold only elements of its own kind. To group elements of different types, use group layers.