Editing NURBS Editing Support

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Main tasks would be:
 
Main tasks would be:
#Identifying key editing operations (see next) and mapping those operations to openNURBS calls (or identifying that the equivalent routine doesn't exist in openNURBS and will need to be implemented)  
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#Identifying key editing operations (knot insertion, etc) and mapping those operations to openNURBS calls (or identifying that the equivalent routine doesn't exist in openNURBS and will need to be implemented)  
 
#Implementing librt/libbrep/libged logic to allow those calls to be made  
 
#Implementing librt/libbrep/libged logic to allow those calls to be made  
 
#Implementing appropriate graphical controls and interface logic in Archer (other primitive editing support code in Archer will provide relevant examples).
 
#Implementing appropriate graphical controls and interface logic in Archer (other primitive editing support code in Archer will provide relevant examples).
 
NURBS curve editing operations:
 
* Attach (two splines)
 
* Detach (end point)
 
* Connect (splice new curve)
 
* Trim (cut curve)
 
* Knot Insert
 
* Reverse (change direction)
 
 
NURBS curve to surface operations:
 
* Projection (see [[Vector_Drawings_from_NURBS|here]])
 
* Loft/Birail (surface created between curves)
 
* Cap (surface from closed curve)
 
* Extrude
 
* Revolve
 
 
NURBS surface editing operations:
 
* Rebuild/Simplify (remove unnecessary control points)
 
* Trim (evaluate to untrimmed)
 
* Bevel/Fillet (replace edge with surface+edges)
 
  
 
=References=
 
=References=

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