[Gmsh] Small question on triangle, tetgen, netgen and others

[David Colignon]

Hi Marc,


Durufle marc wrote:
> I read your subject on using triangle and tetgen with
> gmsh. I am really interested with that. But there is
> no explanation on the documentation how I can do that.
> I hear often that in 3-D, we can use the netgen, but I
> don't know how.
> 
> For netgen, it is an option like ?? :
> Mesh.Algorithm = 1;

Yes

http://geuz.org/gmsh/doc/texinfo/gmsh-full.html#SEC38

Mesh.Algorithm
    2D mesh algorithm (1=isotropic, 2=anisotropic, 3=triangle)
    Default value: 1
    Saved in: General.OptionsFileName

Mesh.Algorithm3D
    3D mesh algorithm (1=isotropic, 4=netgen, 5=tetgen)
    Default value: 1
    Saved in: General.OptionsFileName


> 
> For triangle and tetgen, I have to compile these two
> codes, specify that I want to use them for gmsh. I
> have to configure gmsh like that ? :
> configure --enable-triangle --enable-tetgen 

Yes. Put them in the gmsh/contrib directory

Here is what I have:

$ ll contrib/Triangle/
total 844K
drwxrwxr-x+ 2 colignon    0 Aug 18 10:49 CVS/
-rw-r--r--  1 colignon 1.5K Mar  1  2006 Makefile
-rw-r--r--  1 colignon 9.1K Nov 28  2005 README
-rw-r--r--  1 colignon 636K Nov 28  2005 triangle.c
-rw-r--r--  1 colignon  22K Nov 28  2005 triangle.h
-rw-rw-r--  1 colignon 165K Oct 10 16:18 triangle.o

$ ll contrib/Netgen/
total 774K
-rw-rw-r--   1 colignon  26K Sep 21  2005 COPYING.LIB
drwxrwxr-x+  2 colignon    0 Nov 14 17:49 CVS/
-rw-r--r--   1 colignon 219K Nov 14 17:49 Makefile
-rw-rw-r--   1 colignon 2.7K Sep 21  2005 README
-rw-rw-r--   1 colignon   14 Sep 21  2005 VERSION
drwxrwxr-x+ 15 colignon    0 Sep 28  2005 libsrc/
-rw-rw-r--   1 colignon 2.0K Sep 21  2005 nglib_addon.cpp
-rw-rw-r--   1 colignon  242 Sep 21  2005 nglib_addon.h
-rw-rw-r--   1 colignon 515K Oct 10 16:22 nglib_addon.o

Cheers,

Dave


> 
> And when it is enable, how do I specify on geo files
> that I want to use the; ? by changing the type of
> algorithm ? By example :
> Mesh.Algorithm = 66;
> 
> Perhaps my questions are stupid. I hope not.
> 
> Best regards.
> 
> 
> 
> 
> 	
> 
> 	
> 		
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