Create Buildings from Polygons
Create Buildings from Polygons tool creates 3D building models from selected 3D roof polygons. The polygons are usually a result of the Construct Roof Polygons tool.
The tools uses laser points to get the base elevation for walls. The building models are created as Bentley cell elements that contain shapes for each roof plane, possibly roof sides which determine the roof’s thickness according to settings in Building vectorization / Model, and wall shapes for each outer roof edge.
The following figure illustrates the result of the building model creation using the same example as shown for the Construct Roof Polygons tool.
To construct building models from polygons:
1. Select the polygons that represent roof planes.
2. Select Create Buildings from Polygons tool.
This opens the Create Building from Polygons dialog:
3. Define settings and click OK.
This creates the building models. The building models are drawn into the CAD file according to the settings in Building vectorization / Levels category of TerraScan Settings.
SETTING |
EFFECT |
|---|---|
Lower classes |
Point class(es) consisting points next to buildings, for example, ground or low vegetation. The points are used to get the base elevation of the building walls. |
|
Opens the Select classes dialog which contains the list of active classes in TerraScan. You can select multiple source classes from the list that are then used in the Lower classes field. |
Random wall color |
If on, wall shapes are colored randomly by using a selection of colors from the active color table of the CAD file. If off, the color defined in Building vectorization / Model category of TerraScan Settings is used for all wall shapes. |
You can undo the creation of building models by using the Undo command of the CAD platform.
