You can use this tab to export a 2D plan or a 3D model of your model in DXF format.
At the top of the window are controls which apply to both 2D and 3D export. Below these are specific settings for 2D export, and then specific settings for 3D export.
From top to bottom:
Controls for both 2D and 3D Export
- Current Drawing Units - this displays the current units which are being used in your CityCAD model (eg. metres or feet).
- Select zero-point of DXF drawing - this allows you set where the origin point of the exported DXF drawing should be. There are two options - you can either set 'Use CityCAD zero-point' (ie. retain the same origin point) or you can 'use Custom zero-point'. You can type in the coordinates in your CityCAD model which will become the zero point of the exported DXF model.
- Click 'Create Separate DXF layer for each group' to assign every CityCAD element in each group into the same layer.
- Click 'Create Separate DXF layer for each phase' to assign every CityCAD element in each phase into the same layer.
- Click 'Use descriptive DXF handles...' to add more information to elements in the exported DXF file.
Note that if you check the boxes to create separate layers for both groups and phases, then a separate DXF layer will be created for every combination of group and phase. For example there will be one layer for elements in group 1 and phase 1, and another layer for elements in group 2 and phase 1 and so on.
Controls for 2D Export
- If you export a plan or section, then a 'flat' 2D drawing will be created in DXF format, organised into layers. You can control the colour of each layer by clicking on the drop-down menus in this part of the panel. The first five apply to plans (Building, Block Boundaries, Trees, Routes and Public Transport Nodes) and the last two apply to sections (Section Line and Section Detail).
- Click 'Export 2D Plan' to save a DXF file of a plan of your city model, based on the current settings.
- Click 'Export 2D Section' to save a DXF file of a section of your city model, based on the current settings, and the section line chosen in the 2D Drawing Window.
Controls for 3D Outline Export
- If you export a plan or section, then a simplified 3D model will be created with route centrelines, highway boundaries and block boundaries on three separate layers.
- Click 'Export 3D Outlines' to save a DXF file of a simplified 3D model, based on the current settings.
- This format is recommended for importing into a civil engineering CAD application such as Autodesk™ Civil 3D, where route centrelines can be converted into alignments, and the areas converted into surfaces.
Controls for 3D Export
You can choose which faces to display for blocks and routes/trees, depending on what you want to do with the exported DXF model.
- All hidden
- Some hidden - this will show some key edges, such as the outlines of blocks.
- All shown
Click 'Export 3D Model' to save a DXF file of your city model. This format is recommended for importing into other CAD programs such as SketchUp™.
At the bottom of the screen you can press 'Reset' to reset everything to original installation defaults.
Technical Note - About DXF
DXF is a CAD data file format developed by Autodesk™ for exchanging CAD information between AutoCAD™ and other programs. For more information, see the DXF article on Wikipedia.