The 3D Model products generated by HxMap are delivered in an internal *.tdc file format. The TDC format is required by the HxMap 3D Editor and process of texturing. In order to use the final 3D model objects in a GIS environment or other 3rd party software, it's useful to convert the data into a common format. The Export 3D model tool allows converting TDC into OBJ or CityGML file format.
After selecting a 3D Model file (*.tdc) you have following options:
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Customize the output path
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Define an AOI (*.shp).
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If no AOI is defined the whole area of the input data are exported.
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If the shape file contains multiple polygons multiple export files will be generated.
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Pick the desired output format
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Define layers to be in-/excluded (e.g. 1,3, 5-9)
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Export objects as single building files (Object ID is used to define which parts belong to one building)
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Define default colors for untextured roof, wall or ground faces
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The OBJ export has additional options:
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Shift of the 3D Model to a local origin or with a given offset
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Rotation of the coordinate system (Y-Up) and a new tessellation of the geometry is possible.
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CityGML can be exported in version 1.0 and 2.0. The spatial reference system can be defined by a text string (srsName) but the correctness will not be checked.