CityPlanner comes with an exporting tool that lets you draw a polygon and export 3D-geometry within the polygon for use in other 3D authoring tools. Export terrain model excerpts, selected buildings from the 3D city model or your own 3D sketches.
Export in georeferenced KMZ or Collada format
Draw an area and export any 3D geometry in that area
Import exported data in Sketchup, AutoCAD, Maya, 3DStudio, Microstation and more
Use to georeference 3D-CAD models, 3D print, send to external consultants