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//
// Write Tochnog file
//
// by
//
// Andreas Seltmann
// email: A.Seltmann@lsw.uni-heidelberg.de
//
#include <mystdlib.h>
#include <myadt.hpp>
#include <linalg.hpp>
#include <csg.hpp>
#include <meshing.hpp>
#include "writeuser.hpp"
namespace netgen
{
void WriteTochnogFormat (const Mesh & mesh,
const filesystem::path & filename)
{
cout << "\nWrite Tochnog Volume Mesh" << endl;
ofstream outfile (filename);
outfile << "(Nodes and Elements generated with NETGEN" << endl;
outfile << " " << filename << ")" << endl;
outfile.precision(8);
outfile << "(Nodes)" << endl;
int np = mesh.GetNP();
int ne = mesh.GetNE();
int i, j;
for (i = 1; i <= np; i++)
{
outfile << "node " << " " << i << " ";
outfile << mesh.Point(i)(0) << " ";
outfile << mesh.Point(i)(1) << " ";
outfile << mesh.Point(i)(2) << "\n";
}
int elemcnt = 0; //element counter
int finished = 0;
int indcnt = 1; //index counter
while (!finished)
{
int actcnt = 0;
const Element & el1 = mesh.VolumeElement(1);
int non = el1.GetNP();
if (non == 4)
{
outfile << "(Elements, type=-tet4)" << endl;
}
else
{
cout << "unsupported Element type!!!" << endl;
}
for (i = 1; i <= ne; i++)
{
const Element & el = mesh.VolumeElement(i);
if (el.GetIndex() == indcnt)
{
actcnt++;
if (el.GetNP() != non)
{
cout << "different element-types in a subdomain are not possible!!!" << endl;
continue;
}
elemcnt++;
outfile << "element " << elemcnt << " -tet4 ";
if (non == 4)
{
outfile << el.PNum(1) << " ";
outfile << el.PNum(2) << " ";
outfile << el.PNum(4) << " ";
outfile << el.PNum(3) << "\n";
}
else
{
cout << "unsupported Element type!!!" << endl;
for (j = 1; j <= el.GetNP(); j++)
{
outfile << el.PNum(j);
if (j != el.GetNP()) outfile << ", ";
}
outfile << "\n";
}
}
}
indcnt++;
if (elemcnt == ne) {finished = 1; cout << "all elements found by Index!" << endl;}
if (actcnt == 0) {finished = 1;}
}
cout << "done" << endl;
}
static RegisterUserFormat reg_tochnog ("Tochnog Format", {".mesh"}, nullopt, WriteTochnogFormat);
}
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