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https://github.com/NGSolve/netgen.git
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472 lines
15 KiB
C++
472 lines
15 KiB
C++
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//
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// Read Pro/ENGINEER neutral format
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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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namespace netgen
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{
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#include "writeuser.hpp"
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bool ReadLine (istream & in, string & buf)
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{
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do
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{
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buf = "";
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while (in.good())
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{
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char ch = in.get();
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if (ch == '\n') break;
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if (ch == '\r') break;
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if (ch == '\\')
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{
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// while (iswhite (ch = in.get() )
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ch = in.get(); // '\n' CR
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ch = in.get(); // '\n' LF
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}
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else
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buf += ch;
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}
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}
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while (in.good() && (buf == "" || buf[0] == '#'));
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return in.good();
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}
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class LoadType
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{
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public:
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int id;
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string name;
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string placement;
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string valuetype;
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NgArray<double> places;
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};
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void ReadFNFFormat (Mesh & mesh,
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const string & filename)
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{
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ifstream fin (filename.c_str());
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string buf;
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mesh.SetDimension (3);
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while (ReadLine (fin, buf))
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{
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stringstream sbuf(buf);
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string start_sect, token; char ch;
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sbuf >> start_sect;
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if (start_sect == "%START_SECT")
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{
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sbuf >> ch >> token;
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if (token == "HEADER")
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{
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while (1)
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{
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ReadLine (fin, buf);
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stringstream sbuf(buf);
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string token;
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sbuf >> token;
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if (token == "%TITLE")
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{
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char ch;
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string name;
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sbuf >> ch >> name;
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PrintMessage(3, "Title: ", name);
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}
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else if (token == "%STATISTICS")
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{
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;
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}
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else if (token == "%END_SECT")
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{
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break;
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}
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else
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{
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PrintMessage(1, "SECTION HEADER, unknown field: ",buf);
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}
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}
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}
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else if (token == "ELEM_TYPES")
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{
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while (1)
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{
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ReadLine (fin, buf);
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stringstream sbuf(buf);
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string token;
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sbuf >> token;
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if (token == "%ELEM_TYPE")
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{
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int nr;
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string def;
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char ch;
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sbuf >> nr >> def >> ch;
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if (def == "DEF")
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{
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string classname, type;
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sbuf >> classname >> type;
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if (classname != "SOLID" || type != "TETRA")
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cerr << "Element not supported: " << buf << endl;
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}
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}
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else if (token == "%END_SECT")
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{
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break;
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}
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else
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{
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PrintMessage(1, "SECTION ELEM_TYPE, unknown field: ", buf);
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}
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}
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}
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else if (token == "COORD_SYSTEMS")
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{
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while (1)
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{
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ReadLine (fin, buf);
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stringstream sbuf(buf);
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string token;
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sbuf >> token;
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if (token == "%END_SECT")
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{
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break;
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}
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else
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{
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// cout << "COORD_SYSTEMS, unknown field: " << buf << endl;
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}
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}
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}
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else if (token == "ANALYSIS")
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{
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// ignore this section
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while (1)
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{
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ReadLine (fin, buf);
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stringstream sbuf(buf);
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string token;
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sbuf >> token;
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if (token == "%END_SECT")
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{
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break;
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}
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}
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}
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else if (token == "MATERIALS")
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{
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*testout << "parse materials" << endl;
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NgArray<double> young_modulus, poisson_ratio, mass_density;
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while (1)
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{
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ReadLine (fin, buf);
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stringstream sbuf(buf);
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string token;
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sbuf >> token;
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if (token == "%MATERIAL")
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{
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int nr;
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string prop;
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char ch;
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double val;
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sbuf >> nr >> prop >> ch;
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if (prop == "DEF")
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{
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;
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}
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else
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{
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sbuf >> val;
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*testout << "prop = " << prop << ", val = " << val << endl;
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if (prop == "YOUNG_MODULUS")
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young_modulus.Append (val);
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else if (prop == "POISSON_RATIO")
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poisson_ratio.Append (val);
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else if (prop == "MASS_DENSITY")
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mass_density.Append (val);
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}
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}
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else if (token == "%END_SECT")
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{
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mesh.SetUserData ("YOUNG_MODULUS", young_modulus);
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mesh.SetUserData ("POISSON_RATIO", poisson_ratio);
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mesh.SetUserData ("MASS_DENSITY", mass_density);
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*testout << "young = " << young_modulus << endl;
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*testout << "poisson = " << poisson_ratio << endl;
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break;
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}
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else
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{
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PrintMessage(1, "SECTION MATERIALS, unknown field: ", buf);
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}
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}
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}
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else if (token == "MESH")
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{
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while (1)
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{
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ReadLine (fin, buf);
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stringstream sbuf(buf);
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string token;
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sbuf >> token;
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if (token == "%NODE")
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{
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string st;
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char ch;
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int nr, ks_id;
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double x,y,z;
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sbuf >> nr >> st >> ch >> x >> y >> z >> ks_id;
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mesh.AddPoint (Point3d (x,y,z) );
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}
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else if (token == "%ELEM")
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{
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string elemid, def;
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char ch;
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int elnr, typid, matid;
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string propid;
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sbuf >> elnr >> def >> ch;
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sbuf >> typid >> matid >> propid;
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NgArray<int> pnums;
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while (1)
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{
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int pn;
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sbuf >> pn;
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if (!sbuf.good()) break;
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pnums.Append (pn);
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}
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int pe2ng [] = { 0, 1, 2, 3, 4, 7, 5, 6, 8, 9 };
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Element el(pnums.Size());
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for (int j = 0; j < pnums.Size(); j++)
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el[pe2ng[j]] = pnums[j];
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el.SetIndex (matid);
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mesh.AddVolumeElement (el);
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}
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else if (token == "%END_SECT")
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{
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break;
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}
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else
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{
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PrintMessage(1, "SECTION MESH, unknown: ", buf);
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}
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}
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}
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else if (token == "MESH_TOPOLOGY")
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{
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while (1)
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{
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ReadLine (fin, buf);
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stringstream sbuf(buf);
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string token, kw;
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int nr;
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char ch;
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sbuf >> token;
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if (token == "%EDGE")
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{
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sbuf >> nr >> kw >> ch;
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if (kw == "NODES")
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{
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NgArray<int> enums;
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while (1)
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{
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int en;
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sbuf >> en;
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if (!sbuf.good()) break;
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enums.Append (en);
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}
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for (int j = 0; j+2 < enums.Size(); j+=2)
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{
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Segment seg;
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seg[0] = enums[j];
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seg[1] = enums[j+2];
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seg[2] = enums[j+1];
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seg.edgenr = nr;
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mesh.AddSegment (seg);
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}
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}
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}
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else if (token == "%SURFACE")
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{
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sbuf >> nr >> kw >> ch;
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if (kw == "FACES")
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{
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NgArray<int> fnums;
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while (1)
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{
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int fn;
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sbuf >> fn;
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if (!sbuf.good()) break;
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fnums.Append (fn);
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}
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FaceDescriptor fd(-1, -1, -1, -1);
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fd.SetBCProperty (nr);
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*testout << "add fd " << mesh.GetNFD() << ", nr = " << nr << endl;
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mesh.AddFaceDescriptor (fd);
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for (int j = 0; j < fnums.Size(); j += 2)
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{
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int elnr = fnums[j];
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int fnr = fnums[j+1];
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const Element & el = mesh.VolumeElement (elnr);
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if(j == 0)
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mesh.GetFaceDescriptor(nr).SetDomainIn(el.GetIndex());
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Element2d el2d;
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el.GetFace (fnr, el2d);
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el2d.SetIndex (nr);
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mesh.AddSurfaceElement (el2d);
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}
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}
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}
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else if (token == "%END_SECT")
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{
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break;
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}
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else
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{
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PrintMessage(1, "SECTION MESH, unknown: ", buf);
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}
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}
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}
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else if (token == "LOADS")
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{
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NgArray<LoadType*> loadtypes;
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while (1)
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{
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ReadLine (fin, buf);
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stringstream sbuf(buf);
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string token;
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sbuf >> token;
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if (token == "%LOAD_TYPE")
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{
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string def;
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char ch;
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LoadType * lt = new LoadType;
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sbuf >> lt->id >> def >> ch >> lt->name >> lt->placement >> lt->valuetype;
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if (lt->name == "DISPLACEMENT")
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PrintMessage(3, "loadtype DISPLACEMENT found");
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if (lt->placement != "FACE" && lt->placement != "EDGE" && lt->placement != "NODE")
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PrintMessage(1, "unsupported placement ", lt->placement);
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loadtypes.Append (lt);
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}
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else if (token == "%LOAD")
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{
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int id;
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string def;
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char ch;
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int placement;
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int load_type_id, con_case_id;
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sbuf >> id >> def >> ch;
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if (def == "DEF")
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{
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sbuf >> load_type_id >> con_case_id;
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}
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if (def == "VAL")
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{
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sbuf >> placement;
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for (int i = 0; i < loadtypes.Size(); i++)
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if (load_type_id == loadtypes[i]->id)
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loadtypes[i]->places.Append (placement);
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}
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}
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else if (token == "%CON_CASE")
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{ ; }
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else if (token == "%END_SECT")
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{
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for (int i = 0; i < loadtypes.Size(); i++)
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{
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stringstream str;
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str << loadtypes[i]->places;
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if (loadtypes[i]->placement == "FACE" && loadtypes[i]->name == "DISPLACEMENT")
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{
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mesh.SetUserData ("CONSTRAINT_DISP_FACE", loadtypes[i]->places);
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PrintMessage(3, "constrained faces: ", str.str());
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}
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if (loadtypes[i]->placement == "EDGE" && loadtypes[i]->name == "DISPLACEMENT")
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{
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mesh.SetUserData ("CONSTRAINT_DISP_EDGE", loadtypes[i]->places);
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PrintMessage(3,"constrained edges: ", str.str());
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}
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if (loadtypes[i]->placement == "NODE" && loadtypes[i]->name == "DISPLACEMENT")
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{
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mesh.SetUserData ("CONSTRAINT_DISP_NODE", loadtypes[i]->places);
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PrintMessage(3, "constrained nodes: ", str.str());
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}
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}
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break;
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}
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else
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{
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PrintMessage(1, "SECTION LOADS, unknown field: ", buf);
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}
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}
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}
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else
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{
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PrintMessage(1, "unknown section ", token);
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}
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}
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else
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PrintMessage(3, "parse line: (", buf, ")");
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}
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}
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}
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