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Manually created street networks, parcels, footprints or even building volumes can be imported into the CityEngine for further refinement.
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The CityEngine support the import of street networks in the following two formats: - Street networks can be created in any application such as AutoCAD(TM) or Illustrator(TM) and imported into the CityEngine via the well-known .DXF file format.
- Via OpenStreetMap, real existing street networks can be imported directly into the CityEngine via the .OSM file format.
The latter allows for an extremely efficient reconstruction of existing urban surroundings. The following tutorial highlights the OpenStreetMap import:
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The figure shows a an example of a possible CityEngine production pipeline. A similar pipeline was used to create the Rome Reborn model. There, the crude building volumes have been imported into the CityEngine and then the shape grammar has been applied to generate detailed building models.
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In the following the supported file formats are shortly described. Format | Features | DXF | Imports street networks created manually in tools such as AutoCAD(R) as CityEngine street graph layer(s). | OSM | Imports real existing street networks exported from the OpenStreetMap site. | OBJ | Imports meshes created manually in tools such as MAX(R) as initial shape layers, for example footprints or mass models (volumes). Each group in the OBJ file is interpreted as one initial shape. A group can consist of one or several polygons. The group name (without suffix) is also used as ShapeSymbol that invokes a similar named rule. |
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