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Draw Road model

How to draw 3D solids (for NP21 forward)

Answer: From Novapoint 21 the option to draw 3D solids from the draw road model dialog has been removed. Instead the user must produce the 3D solids in CAD when they need them through an export of a Plan Presentation.

The process is a bit cumbersome, but doable as long as AutoCAD manages to recognize the data as watertight.

The computing process in the DWG may take a long time. We recommend starting with a small drawing as a beginning to familiarize yourself with the process.

An example file is provided here to test the process on data that work.
  1. Publishing the road model solids to CAD.
    • Make a plan presentation with the solids and publish the data to CAD.
    • The solids will be published as Polyface Mesh objects.
  2. Explode the Polyface Mesh to 3D Faces with the EXPLODE-command.
  3. Join the 3D Faces to Surfaces
    • Run CONVTOSURFACE function
  4. Merge the surfaces to a solid
    • Run SURFSCULPT function
    • Remember to join one and one pavement layer
The process may not always work, and we have found that it can be related to the DWG-format itself.
Try to save the DWG as DXF-R12 (recommended for better results but does not handle big data effectivly) or DXF-2018. Before continuing, reopening the DXF-file in AutoCAD.
Some of the solids from Novapoint may not be watertight enough for this process to make solids in CAD.
Consider to clean up the drawing
* Run QuickSelect and pick away all object types that you don't need.
You may need to split disjointed solids that exists inside one object after running SURFSCULPT.
* Run: SOLIDEDIT > BODY > seParate solids
en/np/road/faq/draw_roadmodel/start.txt · Last modified: 2020/02/26 06:58 by vn_no_dso