[Gmsh] two bugs

[John Doe]

Hi Christophe,

Thanks for your response.  I am rebuilding the stable source with
Tetgen right now.

Just for my understanding, both Netgen and Tetgen produce a Delaunay
tetrahedralization?  In my finite volume code, do I need to look out
for elements where the Delaunay condition is not met?

Thanks,

Juan

On Fri, Oct 3, 2008 at 1:19 AM, Christophe Geuzaine <cgeuzaine at ulg.ac.be> wrote:
> John Doe wrote:
>>
>> According to the web page, bugs should be filed on the mailing list.
>> I have two.
>>
>> Bug #1:
>> If I create a 3d box with corners 1e-5 apart with 5e-7 characteristic
>> length at each corner, the program crashes.  If I do the same with 1
>> and 0.05.  This is with the stable source code version
>>
>
> Hi John - it's a known problem with the 3D Netgen algorithm. Using
> Tetgen+Delaunay should solve this.
>
> (Try first with a binary from the website. To build from sources, you need
> to download tetgen from the web and copy the .cxx and .h files into
> gmsh/contrib/Tetgen/.)
>
>> Bug #2:
>> Compilation of the stable source code fails if GL/gl.h is missing.
>> The configure script misses this on linux.
>>
>
> We rely on fltk's "fltk-config" script to detect OpenGL on Linux. We should
> maybe include additional tests...
>
>
>
>> Thanks,
>>
>> Juan
>>
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>>
>>
>
>
> --
> Prof. Christophe Geuzaine
> University of Liege, Electrical Engineering and Computer Science
> http://www.montefiore.ulg.ac.be/~geuzaine
>