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|
//
// Read user dependent output file
//
#include <mystdlib.h>
#include <myadt.hpp>
#include <linalg.hpp>
#include <csg.hpp>
#include <stlgeom.hpp>
#include <meshing.hpp>
#include <algorithm>
#include "writeuser.hpp"
namespace netgen
{
extern void ReadTETFormat (Mesh & mesh, const filesystem::path & filename);
extern void ReadFNFFormat (Mesh & mesh, const filesystem::path & filename);
#ifdef NG_CGNS
extern void ReadCGNSMesh (Mesh & mesh, const filesystem::path & filename);
#endif // NG_CGNS
void ReadFile (Mesh & mesh,
const filesystem::path & filename)
{
PrintMessage(3, "Read User File");
auto ext = filename.extension();
char reco[100];
int np, nbe;
if ( ext == ".surf" )
{
cout << IM(3) << "Surface file" << endl;
ifstream in (filename);
in >> reco;
in >> np;
for (int i = 1; i <= np; i++)
{
Point3d p;
in >> p.X() >> p.Y() >> p.Z();
mesh.AddPoint (p);
}
mesh.ClearFaceDescriptors();
mesh.AddFaceDescriptor (FaceDescriptor(1,1,0,0));
in >> nbe;
// int invert = globflags.GetDefineFlag ("invertsurfacemesh");
for (int i = 1; i <= nbe; i++)
{
Element2d el;
el.SetIndex(1);
for (int j = 1; j <= 3; j++)
{
in >> el.PNum(j);
// el.PNum(j)++;
if (el.PNum(j) < PointIndex(1) ||
el.PNum(j) > PointIndex(np))
{
cerr << "Point Number " << el.PNum(j) << " out of range 1..."
<< np << endl;
return;
}
}
/*
if (invert)
swap (el.PNum(2), el.PNum(3));
*/
mesh.AddSurfaceElement (el);
}
cout << IM(3) << "points: " << np << " faces: " << nbe << endl;
}
if ( ext == ".unv" )
{
char reco[100];
// int invert;
// read files that are stored with D instead of E as exponent prefix
// such files are for example exported by GMSH
bool Dnotation;
bool DnotationSet = false;
ifstream in(filename);
mesh.ClearFaceDescriptors();
mesh.AddFaceDescriptor (FaceDescriptor(0,1,0,0));
mesh.GetFaceDescriptor(1).SetBCProperty (1);
// map from unv element nr to our element number + an index if it is vol (0), bnd(1), ...
std::map<size_t, std::tuple<size_t, int>> element_map;
int dim = 3;
int bccounter = 0;
NgArray<Segment> tmp_segments;
while (in.good())
{
in >> reco;
if (strcmp(reco, "-1") == 0)
continue;
else if (strcmp (reco, "2411") == 0)
{
cout << IM(3) << "nodes found" << endl;
while (1)
{
int pi, hi;
Point<3> p;
string p1tmp, p2tmp, p3tmp;
in >> pi;
if (pi == -1)
break;
in >> hi >> hi >> hi;
// check if D in first line
if (DnotationSet == false) {
in >> p1tmp >> p2tmp >> p3tmp;
if (p1tmp.find("D") != std::string::npos){
Dnotation = true;
cout << IM(3) << "Attention: in your UNV file, D is used as an exponent prefix instead of E" << endl;
std::replace(p1tmp.begin(), p1tmp.end(), 'D', 'E');
std::replace(p2tmp.begin(), p2tmp.end(), 'D', 'E');
std::replace(p3tmp.begin(), p3tmp.end(), 'D', 'E');
}
p(0) = std::stod(p1tmp);
p(1) = std::stod(p2tmp);
p(2) = std::stod(p3tmp);
mesh.AddPoint(p);
DnotationSet = true;
continue;
}
if (Dnotation == true) {
in >> p1tmp >> p2tmp >> p3tmp;
std::replace(p1tmp.begin(), p1tmp.end(), 'D', 'E');
std::replace(p2tmp.begin(), p2tmp.end(), 'D', 'E');
std::replace(p3tmp.begin(), p3tmp.end(), 'D', 'E');
p(0) = std::stod(p1tmp);
p(1) = std::stod(p2tmp);
p(2) = std::stod(p3tmp);
}
else{
in >> p(0) >> p(1) >> p(2);
}
mesh.AddPoint(p);
}
cout << IM(3) << "read " << mesh.GetNP() << " points" << endl;
Point3d pmin, pmax;
cout << IM(5) << "Get Box" << endl;
mesh.GetBox (pmin, pmax);
cout << IM(5) << "Pmin: " << pmin << " Pmax: " << pmax << endl;
if(fabs(pmin.Z() - pmax.Z()) < 1e-10 * Dist(pmin, pmax))
{
cout << IM(5) << "Set Dimension to 2." << endl;
mesh.SetDimension(2);
dim = 2 ;
}
}
else if (strcmp (reco, "2412") == 0)
{
cout << IM(3) << "elements found" << endl;
while (1)
{
int label, fe_id, phys_prop, mat_prop, color, nnodes;
int nodes[100];
int hi;
in >> label;
if (label == -1) break;
in >> fe_id >> phys_prop >> mat_prop >> color >> nnodes;
if (fe_id >= 11 && fe_id <= 32)
in >> hi >> hi >> hi;
for (int j = 0; j < nnodes; j++)
in >> nodes[j];
switch (fe_id)
{
case 11: // (Rod) SEGM
{
Segment el;
el[0] = nodes[0];
el[1] = nodes[1];
el[2] = -1;
if(dim == 3){
auto nr = tmp_segments.Size();
tmp_segments.Append(el);
element_map[label] = std::make_tuple(nr+1, 2);
}
else if(dim == 2){
el.si = -1; // add label to segment, will be changed later when BC's are assigned
auto nr = mesh.AddSegment(el);
element_map[label] = std::make_tuple(nr+1, 2);
}
break;
}
case 22: // (Tapered beam) SEGM
{
Segment el;
el[0] = nodes[0];
el[1] = nodes[2];
el[2] = nodes[1];
if(dim == 3){
auto nr = tmp_segments.Size();
tmp_segments.Append(el);
element_map[label] = std::make_tuple(nr+1, 2);
}
else if(dim == 2){
el.si = -1; // add label to segment, will be changed later when BC's are assigned
auto nr = mesh.AddSegment(el);
element_map[label] = std::make_tuple(nr+1, 2);
}
break;
}
case 41: // TRIG
{
Element2d el (TRIG);
el.SetIndex (1);
for (int j = 0; j < nnodes; j++)
el[j] = nodes[j];
auto nr = mesh.AddSurfaceElement (el);
element_map[label] = std::make_tuple(nr+1, 1);
break;
}
case 42: // TRIG6
{
Element2d el(TRIG6);
el.SetIndex(1);
int jj = 0;
for(auto j : {0,2,4,3,5,1})
el[jj++] = nodes[j];
auto nr = mesh.AddSurfaceElement(el);
element_map[label] = std::make_tuple(nr+1, 1);
break;
}
case 111: // TET
{
Element el (TET);
el.SetIndex (1);
for (int j = 0; j < nnodes; j++)
el[j] = nodes[j];
auto nr = mesh.AddVolumeElement (el);
element_map[label] = std::make_tuple(nr+1, 0);
break;
}
case 118: // TET10
{
Element el(TET10);
el.SetIndex(1);
int jj = 0;
for(auto j : {0,2,4,9,1,5,6,3,7,8})
el[jj++] = nodes[j];
auto nr = mesh.AddVolumeElement(el);
element_map[label] = std::make_tuple(nr+1, 0);
break;
}
default:
cout << IM(3) << "Do not know fe_id = " << fe_id << ", skipping it." << endl;
break;
}
}
cout << IM(3) << mesh.GetNE() << " elements found" << endl;
cout << IM(3) << mesh.GetNSE() << " surface elements found" << endl;
}
else if(strcmp (reco, "2467") == 0)
{
int matnr = 1;
cout << IM(3) << "Groups found" << endl;
while(in.good())
{
int len;
string name;
in >> len;
if(len == -1)
break;
for(int i=0; i < 7; i++)
in >> len;
in >> name;
cout << IM(3) << len << " element are in group " << name << endl;
int hi, index;
int fdnr=-1, ednr=-1;
in >> hi >> index >> hi >> hi;
int codim = get<1>(element_map[index]);
// use first element to determine if boundary or volume
switch (codim)
{
case 0:
{
mesh.SetMaterial(++matnr, name);
mesh.VolumeElement(get<0>(element_map[index])).SetIndex(matnr);
break;
}
case 1:
{
if(dim == 3)
{
int bcpr = mesh.GetNFD();
fdnr = mesh.AddFaceDescriptor(FaceDescriptor(bcpr, 0,0,0));
mesh.GetFaceDescriptor(fdnr).SetBCProperty(bcpr+1);
mesh.SetBCName(bcpr, name);
mesh.SurfaceElement(get<0>(element_map[index])).SetIndex(fdnr);
bccounter++;
}
else if(dim == 2)
{
mesh.SetMaterial(matnr, name);
fdnr = mesh.AddFaceDescriptor(FaceDescriptor(matnr, 0,0,0));
mesh.SurfaceElement(get<0>(element_map[index])).SetIndex(matnr);
mesh.GetFaceDescriptor(fdnr).SetBCProperty(matnr);
matnr++;
}
break;
}
case 2:
{
if(dim == 3)
{
int bcpr = mesh.GetNCD2Names()+1;
auto ed = EdgeDescriptor();
ed.SetSurfNr(0,bcpr);//?
ednr = mesh.AddEdgeDescriptor(ed);
mesh.SetCD2Name(bcpr, name);
auto nr = mesh.AddSegment(tmp_segments[get<0>(element_map[index])-1]);
mesh[nr].edgenr = ednr+1;
}
else if(dim == 2)
{
Segment & seg = mesh.LineSegment(get<0>(element_map[index]));
seg.si = bccounter + 1;
mesh.SetBCName(bccounter, name);
bccounter++;
}
break;
}
default:
{
cout << IM(3) << "Codim " << codim << " not implemented yet!" << endl;
}
}
for(int i=0; i<len-1; i++)
{
in >> hi >> index >> hi >> hi;
switch (codim)
{
case 0:
mesh.VolumeElement(get<0>(element_map[index])).SetIndex(matnr);
break;
case 1:
if(dim == 3) mesh.SurfaceElement(get<0>(element_map[index])).SetIndex(fdnr);
else if (dim == 2){
mesh.SurfaceElement(get<0>(element_map[index])).SetIndex(matnr-1);
mesh.GetFaceDescriptor(fdnr).SetBCProperty(matnr);
}
break;
case 2:
if(dim == 3)
{
auto nr = mesh.AddSegment(tmp_segments[get<0>(element_map[index])-1]);
mesh[nr].edgenr = ednr+1;
}
else if(dim == 2)
{
Segment & seg = mesh.LineSegment(get<0>(element_map[index]));
seg.si = bccounter;
}
break;
default:
break;
}
}
}
}
else
{
cout << IM(3) << "Do not know data field type " << reco << ", skipping it" << endl;
while(in.good())
{
in >> reco;
if(strcmp(reco, "-1") == 0)
break;
}
}
}
if(dim == 2){
// loop through segments to assign default BC to unmarked edges
int bccounter_tmp = bccounter;
for(int index=1; index <= mesh.GetNSeg(); index++){
Segment & seg = mesh.LineSegment(index);
if(seg.si == -1){
seg.si = bccounter + 1;
if(bccounter_tmp == bccounter) mesh.SetBCName(bccounter, "default"); // could be more efficient
bccounter_tmp++;
}
}
if(bccounter_tmp > bccounter) bccounter++;
}
cout << IM(5) << "Finalize mesh" << endl;
Point3d pmin, pmax;
cout << IM(5) << "ComputeNVertices" << endl;
mesh.ComputeNVertices();
cout << IM(5) << "RebuildSurfaceElementLists" << endl;
mesh.RebuildSurfaceElementLists();
cout << IM(5) << "GetBox" << endl;
mesh.GetBox (pmin, pmax);
cout << IM(5) << "UpdateTopology" << endl;
mesh.UpdateTopology();
cout << IM(5) << "increment bccounter" << endl;
if(dim == 3) bccounter++;
cout << IM(5) << "bounding-box = " << pmin << "-" << pmax << endl;
cout << IM(5) << "Created " << bccounter << " boundaries." << endl;
for(int i=0; i<bccounter; i++){
cout << IM(5) << mesh.GetBCName(i) << endl;
}
}
// fepp format2d:
if ( ext == ".mesh2d" )
{
cout << IM(3) << "Reading FEPP2D Mesh" << endl;
char buf[100];
int np, ne, nseg, i, j;
ifstream in (filename);
in >> buf;
in >> nseg;
for (i = 1; i <= nseg; i++)
{
int bound, p1, p2;
in >> bound >> p1 >> p2;
// forget them
}
in >> ne;
for (i = 1; i <= ne; i++)
{
int mat, nelp;
in >> mat >> nelp;
Element2d el (nelp == 3 ? TRIG : QUAD);
el.SetIndex (mat);
for (j = 1; j <= nelp; j++)
in >> el.PNum(j);
mesh.AddSurfaceElement (el);
}
in >> np;
for (i = 1; i <= np; i++)
{
Point3d p(0,0,0);
in >> p.X() >> p.Y();
mesh.AddPoint (p);
}
}
else if ( ext == ".mesh" )
{
cout << IM(3) << "Reading Neutral Format" << endl;
int np, ne, nse, i, j;
ifstream in (filename);
in >> np;
if (in.good())
{
// file starts with an integer
for (i = 1; i <= np; i++)
{
Point3d p(0,0,0);
in >> p.X() >> p.Y() >> p.Z();
mesh.AddPoint (p);
}
in >> ne;
for (i = 1; i <= ne; i++)
{
int mat;
in >> mat;
Element el (4);
el.SetIndex (mat);
for (j = 1; j <= 4; j++)
in >> el.PNum(j);
mesh.AddVolumeElement (el);
}
mesh.AddFaceDescriptor (FaceDescriptor (1, 1, 0, 0));
int nfd = 1;
in >> nse;
for (i = 1; i <= nse; i++)
{
int mat; // , nelp;
in >> mat;
Element2d el (TRIG);
el.SetIndex (mat);
while(nfd<mat)
{
++nfd;
mesh.AddFaceDescriptor(FaceDescriptor(nfd,nfd,0,0));
}
for (j = 1; j <= 3; j++)
in >> el.PNum(j);
mesh.AddSurfaceElement (el);
}
}
else
{
char buf[100];
in.clear();
do
{
in >> buf;
cout << IM(5) << "buf = " << buf << endl;
if (strcmp (buf, "points") == 0)
{
in >> np;
cout << IM(5) << "np = " << np << endl;
}
}
while (in.good());
}
}
if ( ext == ".emt" )
{
ifstream inemt (filename);
auto pktfile = filename;
pktfile.replace_extension("pkt");
cout << IM(3) << "pktfile = " << pktfile << endl;
int np, nse, i;
int bcprop;
ifstream inpkt (pktfile);
inpkt >> np;
NgArray<double> values(np);
for (i = 1; i <= np; i++)
{
Point3d p(0,0,0);
inpkt >> p.X() >> p.Y() >> p.Z()
>> bcprop >> values.Elem(i);
mesh.AddPoint (p);
}
mesh.ClearFaceDescriptors();
mesh.AddFaceDescriptor (FaceDescriptor(0,1,0,0));
mesh.GetFaceDescriptor(1).SetBCProperty (1);
mesh.AddFaceDescriptor (FaceDescriptor(0,1,0,0));
mesh.GetFaceDescriptor(2).SetBCProperty (2);
mesh.AddFaceDescriptor (FaceDescriptor(0,1,0,0));
mesh.GetFaceDescriptor(3).SetBCProperty (3);
mesh.AddFaceDescriptor (FaceDescriptor(0,1,0,0));
mesh.GetFaceDescriptor(4).SetBCProperty (4);
mesh.AddFaceDescriptor (FaceDescriptor(0,1,0,0));
mesh.GetFaceDescriptor(5).SetBCProperty (5);
int p1, p2, p3;
double value;
inemt >> nse;
for (i = 1; i <= nse; i++)
{
inemt >> p1 >> p2 >> p3 >> bcprop >> value;
if (bcprop < 1 || bcprop > 4)
cerr << "bcprop out of range, bcprop = " << bcprop << endl;
p1++;
p2++;
p3++;
if (p1 < 1 || p1 > np || p2 < 1 || p2 > np || p3 < 1 || p3 > np)
{
cout << IM(3) << "p1 = " << p1 << " p2 = " << p2 << " p3 = " << p3 << endl;
}
if (i > 110354) Swap (p2, p3);
if (mesh.Point(p1)(0) < 0.25)
Swap (p2,p3);
Element2d el(TRIG);
if (bcprop == 1)
{
if (values.Get(p1) < -69999)
el.SetIndex(1);
else
el.SetIndex(2);
}
else
el.SetIndex(3);
el.PNum(1) = p1;
el.PNum(2) = p2;
el.PNum(3) = p3;
mesh.AddSurfaceElement (el);
}
ifstream incyl ("ngusers/guenter/cylinder.surf");
int npcyl, nsecyl;
incyl >> npcyl;
cout << IM(3) << "npcyl = " << npcyl << endl;
for (i = 1; i <= npcyl; i++)
{
Point3d p(0,0,0);
incyl >> p.X() >> p.Y() >> p.Z();
mesh.AddPoint (p);
}
incyl >> nsecyl;
cout << IM(3) << "nsecyl = " << nsecyl << endl;
for (i = 1; i <= nsecyl; i++)
{
incyl >> p1 >> p2 >> p3;
p1 += np;
p2 += np;
p3 += np;
Element2d el(TRIG);
el.SetIndex(5);
el.PNum(1) = p1;
el.PNum(2) = p2;
el.PNum(3) = p3;
mesh.AddSurfaceElement (el);
}
}
// .tet mesh
if ( ext == ".tet" )
ReadTETFormat (mesh, filename);
// .fnf mesh (FNF - PE neutral format)
if ( ext == ".fnf" )
ReadFNFFormat (mesh, filename);
#ifdef NG_CGNS
// .cgns file - CFD General Notation System
if ( ext == ".cgns" )
ReadCGNSMesh (mesh, filename);
#endif // NG_CGNS
if ( ext == ".stl" || ext == ".stlb" )
{
ifstream ist{filename};
auto geom = shared_ptr<STLGeometry>(STLGeometry::Load(ist));
mesh.SetDimension (3);
auto & points = geom->GetPoints();
for (auto & p : points)
mesh.AddPoint(MeshPoint(p));
mesh.AddFaceDescriptor (FaceDescriptor (1, 1, 0, 1));
for (auto ti : IntRange(geom->GetNT()))
{
Element2d el(TRIG);
for (auto i : IntRange(3))
el[i] = int((*geom)[STLTrigId(ti+IndexBASE<netgen::STLTrigId>())][i]);
el.SetIndex(1);
mesh.AddSurfaceElement(el);
}
}
}
void ReadUserFormat(Mesh & mesh, const filesystem::path & filename, const string & format)
{
if(format == "")
return ReadFile(mesh, filename);
if(!UserFormatRegister::HaveFormat(format))
throw Exception("Unknown format: " + format);
const auto entry = UserFormatRegister::Get(format);
if(!entry.read)
throw Exception("Reading format " + format + " is not implemented");
(*entry.read)(mesh, filename);
}
static RegisterUserFormat reg_uni ("Universial Format", {".unv"}, ReadFile, nullopt);
static RegisterUserFormat reg_olaf ("Olaf Format", {".emt"}, ReadFile, nullopt);
}
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