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[Fred Dorosh <>]

I'll still a beginner with Nef3, so if my response is incorrect, I hope 
somebody corrects it.

As far as I can tell, the only out-of-the-box way to produce OFF files is via 
conversion to a CGAL polyhedron representation (convert_to_Polyhedron). 
Unfortunately, these polyhedrons are designed to represent only closed 
orientable 2-manifolds and the conversion will likely fail.

On the other hand, the OFF format itself seems general enough to represent 
non-manifolds. I can't see a reason you couldn't write a direct nef_to_OFF 
converter. Note that you will likely have to take care of triangulation (see 
implementation of Nef_polyhedron::Build_polyhedron). I have successfully used 
this approach to convert nonmanifold Nef output to my own format (similar to  
OFF).

Regards,
Fred


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Fred Dorosh
Software Architect | Presagis

T. +1 514 341.3874 X392  F. +1 514 341.8018

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________________________________________

From: 

 
[]
Sent: December 9, 2008 8:25 AM
To: 

Subject: [cgal-discuss] Nef Polyhedron no simple to OFF

Hello,

I'm working with .off files making boolean operations between 3D objects. When
the solution isn't a nef_polyhedron simple, I don't know how can I obtain a
.off file whith this polyhedron. Is this possible?

Thanks in advance,

Jonatan.
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