[Gmsh] stl with double precision

[Christophe Geuzaine]

> On 9 Feb 2018, at 03:40, Savio Poovathingal <poova002 at umn.edu> wrote:
> 
> Hello, 
> 
> I am using gmsh to generate a 2d grid on a surface and output in stl format with double precision.

You’ll need to hack the code (GmshIO_STL.cpp), as the STL spec specifies single precision. See e.g. https://en.wikipedia.org/wiki/STL_(file_format)



> I cannot find a way to do this. I am sure it's a simple hack but I have not been able to figure it out. I need double precision because the solver I use needs triangle info with double precision. Unfortunately, with single precision, flow is "leaking" into the surface because it is not watertight. 
> 
> Any help is appreciated. 
> 
> Thanks, 
> Savio
> 
> -- 
> Savio James Poovathingal
> Postdoctoral Research Scholar
> Molecular Beam Lab
> Department of Chemistry and Biochemistry
> Montana State University
> Bozeman
> Montana, USA 59717.
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— 
Prof. Christophe Geuzaine
University of Liege, Electrical Engineering and Computer Science 
http://www.montefiore.ulg.ac.be/~geuzaine

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