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Manually created street networks, parcels, footprints or even building volumes can be imported into the CityEngine for further refinement. Generated CityEngine layers can be exported to standard GIS, CAD and 3D tools.
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The CityEngine supports the import of street networks in the following two formats: - GIS data of street networks can be imported into the CityEngine via the widely-used ESRI Shape file format (including attributes).
- 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 | SHP | Import and export street networks or parcels from GIS tools such as ESRI ArcGIS(R) as CityEngine street graph or initial shape layer(s). Attributes are supported. | DXF | Import and export street networks or parcels created manually in tools such as AutoCAD(R) as CityEngine street graph or initial shape layer(s). | OSM | Import real existing street networks exported from the OpenStreetMap site. | OBJ | Import 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. Via OBJ, parcels can also be exported from the CityEngine into all 3D tools. |
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