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CAD tip CAD tip # 7216:

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A
If you need to create a terrain model (DTM) from a source drawing containing 3DFACE entities, you may need to first convert these entities to another object type.

With the LISP utility 3DF2L (see Download) you can convert (explode) 3D faces to polylines or 3D lines (LINE), which can be used as definition data for computing or analysis of terrain surfaces.

Civil2010Civil2009ACAD
100% *CAD
13.2.2010    15448×  
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applies to: Civil 3D 2010 · Civil 3D 2009 · AutoCAD ·

See also:
Tip 14072:How to import an STL, OBJ or 3DS file to an AutoCAD 3D model?
Tip 14056:How to move blocks in the Z axis to the terrain model surface?
Tip 13683:Limitations of the LISP language (AutoLISP, VisualLISP) in AutoCAD LT - what to watch out for
Tip 13038:How to explode 3D faces (3DFACE) into outline polyline?
Tip 12129:Atypical use of meshing for tiling a closed shape.
Selected tip: How to merge several SLB slide libraries into one?


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