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CAD tip CAD tip # 7216:

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Q - question

How to use 3DFACEs as a definition for terrain surface?

A - answer 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 www.cadstudio.cz/download) you can convert (explode) 3D faces to 3D lines (LINE), which can be used as definition data for computing or analysis of terrain surfaces.

Civil2010Civil2009ACAD
100% *  CAD 
13.2.2010    6288x  
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See also:
Tip 11072:How to make an interference line from 3D Faces?
Tip 11054:Difference volume (3D solid) between two TIN surfaces (sets of coordinates)
Tip 10682:Automatic classification of drawing objects by their properties.
Tip 10229:How to find 3DFaces with degenerated vertices?
Tip 9711:3DConstruct - converting a 3D mesh to a frame construct


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