mirror of
https://github.com/NGSolve/netgen.git
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134 lines
2.8 KiB
C++
134 lines
2.8 KiB
C++
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//
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// Write Elmer file
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//
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//
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#include <mystdlib.h>
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#include <myadt.hpp>
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#include <linalg.hpp>
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#include <csg.hpp>
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#include <meshing.hpp>
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#include <sys/stat.h>
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#include "writeuser.hpp"
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namespace netgen
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{
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extern MeshingParameters mparam;
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void WriteElmerFormat (const Mesh &mesh,
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const string &filename)
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{
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cout << "write elmer mesh files" << endl;
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int np = mesh.GetNP();
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int ne = mesh.GetNE();
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int nse = mesh.GetNSE();
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int i, j;
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char str[200];
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int inverttets = mparam.inverttets;
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int invertsurf = mparam.inverttrigs;
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#ifdef WIN32
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char a[256];
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sprintf( a, "mkdir %s", filename.c_str() );
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system( a );
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#else
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// int rc =
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mkdir(filename.c_str(), S_IRWXU|S_IRWXG);
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#endif
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sprintf( str, "%s/mesh.header", filename.c_str() );
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ofstream outfile_h(str);
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sprintf( str, "%s/mesh.nodes", filename.c_str() );
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ofstream outfile_n(str);
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sprintf( str, "%s/mesh.elements", filename.c_str() );
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ofstream outfile_e(str);
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sprintf( str, "%s/mesh.boundary", filename.c_str() );
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ofstream outfile_b(str);
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// fill hashtable
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INDEX_3_HASHTABLE<int> face2volelement(ne);
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for (i = 1; i <= ne; i++)
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{
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const Element & el = mesh.VolumeElement(i);
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INDEX_3 i3;
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int k, l;
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for (j = 1; j <= 4; j++) // loop over faces of tet
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{
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l = 0;
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for (k = 1; k <= 4; k++)
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if (k != j)
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{
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l++;
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i3.I(l) = el.PNum(k);
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}
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i3.Sort();
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face2volelement.Set (i3, i);
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}
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}
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// outfile.precision(6);
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// outfile.setf (ios::fixed, ios::floatfield);
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// outfile.setf (ios::showpoint);
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outfile_h << np << " " << ne << " " << nse << "\n";
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outfile_h << "2" << "\n";
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outfile_h << "303 " << nse << "\n";
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outfile_h << "504 " << ne << "\n";
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for (i = 1; i <= np; i++)
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{
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const Point3d & p = mesh.Point(i);
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outfile_n << i << " -1 ";
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outfile_n << p.X() << " ";
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outfile_n << p.Y() << " ";
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outfile_n << p.Z() << "\n";
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}
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for (i = 1; i <= ne; i++)
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{
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Element el = mesh.VolumeElement(i);
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if (inverttets) el.Invert();
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sprintf( str, "5%02d", (int)el.GetNP() );
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outfile_e << i << " " << el.GetIndex() << " " << str << " ";
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for (j = 1; j <= el.GetNP(); j++)
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{
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outfile_e << " ";
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outfile_e << el.PNum(j);
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}
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outfile_e << "\n";
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}
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for (i = 1; i <= nse; i++)
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{
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Element2d el = mesh.SurfaceElement(i);
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if (invertsurf) el.Invert();
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sprintf( str, "3%02d", (int)el.GetNP() );
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{
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INDEX_3 i3;
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for (j = 1; j <= 3; j++) i3.I(j) = el.PNum(j);
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i3.Sort();
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int elind = face2volelement.Get(i3);
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outfile_b << i << " " << mesh.GetFaceDescriptor(el.GetIndex()).BCProperty() <<
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" " << elind << " 0 " << str << " ";
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}
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for (j = 1; j <= el.GetNP(); j++)
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{
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outfile_b << " ";
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outfile_b << el.PNum(j);
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}
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outfile_b << "\n";
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}
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}
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}
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