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RE: [cgal-discuss] Assertion converting Polyhedron_3 to Nef_polyhedron_3 / Nef_polyhedron VERY slow with extended kernel


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  • From: <>
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  • Subject: RE: [cgal-discuss] Assertion converting Polyhedron_3 to Nef_polyhedron_3 / Nef_polyhedron VERY slow with extended kernel
  • Date: Thu, 26 Sep 2013 14:35:44 +0100

Andre, nothing specific, but does your polyhedron get displayed correctly in
the Polyhedron viewer demo or does it assert there too?

I had a similar problem last month trying to read .obj files before I
realized I was using the wrong kernel ...

-----Original Message-----
From:


[mailto:]
On Behalf Of Andre Schmeisser
Sent: 26 September 2013 14:18
To:

Subject: Re: [cgal-discuss] Assertion converting Polyhedron_3 to
Nef_polyhedron_3 / Nef_polyhedron VERY slow with extended kernel

On 09/19/2013 01:50 PM, as84 wrote:
>
> The following program causes an assertion for the given polyhedron:
> [...]
>
> Trying to directly build Nef polyhedra out of intersections of
> half-spaces instead seems prohibitively costly
>

Hello,

sorry to bump my own question.
But does anybody know what these assertions mean and how I can prevent them?
Or how I can alternatively build a convex Nef polyhedron with a fast kernel,
avoiding the assertions in "polyhedron_3_to_nef_3"?

Thanks a lot.

Best regards,
Andre


--
Dipl.-Inf. Andre Schmeißer
Department of Transport Processes
Fraunhofer Institute for Industrial Mathematics ITWM Fraunhofer-Platz 1,
D-67663 Kaiserslautern
Internet: www.itwm.fraunhofer.de


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