Views:

Prerequisites: Interface, Regions, Ref. Geometry, Align, Mesh Processing  

Download files: Mesh Sketch, Solid Extrude, Solid Revolve, Mesh FitCut and Boolean

The two main approaches to creating a CAD object from scan data are parametric modeling and surfacing. Parametric modeling involves creating sketches and features and is similar to modeling in most CAD software packages, but the mesh is used as a reference for extracting geometry. The surfacing workflow involves creating 3D curves and patches so that a NURBS surface can be fit to the mesh. Depending on what the user’s end goal is, either approach can be utilized.

It is also not necessary to completely finish the model within Design X if the user would prefer to use a different CAD software application for the parametric modeling process. The user can first extract and model difficult geometry from the mesh, then use LiveTransfer to move the feature tree into their preferred CAD application.

Note that taking the parametric modeling approach does not require as much mesh processing as the surfacing approach. If sketches and features are created manually, then the user can ignore holes in the mesh and/or other problematic data. Cleaning and repairing the mesh is much more important for the surface workflow as the surface can only be as good as the underlying mesh