Editing IGES import improvements

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The first focus is getting the NURBS import code updated, but it may well be that other fixes to the IGES code will be needed before the converter can import a reasonably modern test model - this will be something for a student to determine when putting together a proposal.
 
The first focus is getting the NURBS import code updated, but it may well be that other fixes to the IGES code will be needed before the converter can import a reasonably modern test model - this will be something for a student to determine when putting together a proposal.
  
=References=
 
* src/conv/iges
 
** src/conv/iges/n_* is a 'new' IGES importer started for importing NURBS, but never finished
 
** the old importer only imports polygonal IGES
 
** the two should be merged and support for NURBS import added
 
* src/other/openNURBS
 
** we use this library for representing NURBS
 
* src/proc-db/*.cpp
 
** examples of using openNURBS to construct geometry
 
  
=Requirements=
+
Requirements:
  
 
*Familiarity with C
 
*Familiarity with C
 
*Sufficient understanding of NURBS geometry to understand import issues
 
*Sufficient understanding of NURBS geometry to understand import issues
 
*(optional) Familiarity with the IGES standard
 
*(optional) Familiarity with the IGES standard
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 +
Difficulty: medium

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