In this entry I would like to focus attention to what was done to another mechanism for visualization of Revit Models - Export to DWF.
Prior to the 2010 release, our DWF implementation was divided into two parts: 2D export was done through our graphics engine and 3D export was done independently by traversing the model and trying to "guess" what are the correct attributes for every node in the scene graph. This was leading to a lot of errors and justified user complaints about the output quality. Because of this and other problems, we didn't have the ability to combine 2D and 3D data into one file.
After a lot of requests from our users we were given the task to redesign and improve the DWF export to comply with the following five goals:
- WYSIWYG for 2D and 3D views
- Support for 2D and 3D data exportable to a single file
- Export Room and Area geometry for 3D Views
- An improved user interface (UI) for selecting, managing, and previewing what
is being exported (see image above.)
- Apply this new UI consistently among the
different export to CAD functions within Revit. (DWG, DXF, DGN, SAT)
We were able to achieve those goals, although though there are couple of items left for improvement. I hope those changes will be helpful to our users and their everyday work.