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FvmMesh2D.cpp
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FvmMesh2D.cpp
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#include <cstdlib>
#include <fstream>
#include <iostream>
#include <stdexcept>
#include <sstream>
#include <iomanip>
#include <vector>
#include "FvmMesh2D.h"
#include "GmshReader.h"
using namespace std;
FvmMesh2D::FvmMesh2D() {
mshReader.readMesh();
mshReader.constructIdNodes();
}
vector<Cell2D> & FvmMesh2D::getCells() {
return this->cells;
}
void FvmMesh2D::assignVertex() {
vector<Point> coordNodes = mshReader.getCoordNodes();
for (unsigned i = 0; i < mshReader.getNbElm(); i++) {
Cell2D aCell;
aCell.setIdent(i);
NodeIdent nodeIdent = mshReader.getIdNodes()[i];
unsigned idnode = nodeIdent.getIdNode()[5];
for (Point node : coordNodes) {
if (idnode == node.getId()) {
aCell.setVertex1(node);
break;
}
}
idnode = nodeIdent.getIdNode()[6];
for (Point node : coordNodes) {
if (idnode == node.getId()) {
aCell.setVertex2(node);
break;
}
}
idnode = nodeIdent.getIdNode()[7];
for (Point node : coordNodes) {
if (idnode == node.getId()) {
aCell.setVertex3(node);
break;
}
}
idnode = nodeIdent.getIdNode()[8];
for (Point node : coordNodes) {
if (idnode == node.getId()) {
aCell.setVertex4(node);
break;
}
}
this->cells.push_back(aCell);
}
}
void FvmMesh2D::assignFaces() {
for (Cell2D & cell : cells) {
cell.getFace1().setP1(cell.getVertex1());
cell.getFace1().setP2(cell.getVertex2());
cell.getFace2().setP1(cell.getVertex2());
cell.getFace2().setP2(cell.getVertex3());
cell.getFace3().setP1(cell.getVertex3());
cell.getFace3().setP2(cell.getVertex4());
cell.getFace4().setP1(cell.getVertex4());
cell.getFace4().setP2(cell.getVertex1());
}
}
void FvmMesh2D::assignBoundaryCondition() {
vector<NodeIdentMsh> idNodeMsh = mshReader.getIdNodesMsh();
for (Cell2D & cell : cells) {
unsigned idnode1 = cell.getVertex1().getId();
unsigned idnode2 = cell.getVertex2().getId();
for (auto it = idNodeMsh.begin(); it != idNodeMsh.end(); ++it) {
if (it->getElemTyp() == 27) {
if (it->getIdNode()[5] == idnode1 && it->getIdNode()[6] == idnode2) {
cell.getFace1().setBcTyp(it->getTag1()) ;
} else if (it->getIdNode()[5] == idnode2 && it->getIdNode()[6] == idnode1) {
cell.getFace1().setBcTyp(it->getTag1()) ;
}
}
}
idnode1 = cell.getVertex2().getId();
idnode2 = cell.getVertex3().getId();
for (auto it = idNodeMsh.begin(); it != idNodeMsh.end(); ++it) {
if (it->getElemTyp() == 27) {
if (it->getIdNode()[5] == idnode1 && it->getIdNode()[6] == idnode2) {
cell.getFace2().setBcTyp(it->getTag1()) ;
} else if (it->getIdNode()[5] == idnode2 && it->getIdNode()[6] == idnode1) {
cell.getFace2().setBcTyp(it->getTag1()) ;
}
}
}
idnode1 = cell.getVertex3().getId();
idnode2 = cell.getVertex4().getId();
for (auto it = idNodeMsh.begin(); it != idNodeMsh.end(); ++it) {
if (it->getElemTyp() == 27) {
if (it->getIdNode()[5] == idnode1 && it->getIdNode()[6] == idnode2) {
cell.getFace3().setBcTyp(it->getTag1()) ;
} else if (it->getIdNode()[5] == idnode2 && it->getIdNode()[6] == idnode1) {
cell.getFace3().setBcTyp(it->getTag1()) ;
}
}
}
idnode1 = cell.getVertex4().getId();
idnode2 = cell.getVertex1().getId();
for (auto it = idNodeMsh.begin(); it != idNodeMsh.end(); ++it) {
if (it->getElemTyp() == 27) {
if (it->getIdNode()[5] == idnode1 && it->getIdNode()[6] == idnode2) {
cell.getFace4().setBcTyp(it->getTag1()) ;
} else if (it->getIdNode()[5] == idnode2 && it->getIdNode()[6] == idnode1) {
cell.getFace4().setBcTyp(it->getTag1()) ;
}
}
}
}
}
void FvmMesh2D::calculVol() {
unsigned i = 0;
for (auto it = this->cells.begin(); it != this->cells.end(); ++it) {
this->cells[i].setVol(this->cells[i].getVol());
i = i + 1;
}
}
void FvmMesh2D::detectNearestNeighbor() {
unsigned nbelm = mshReader.getNbElm();
for (unsigned i = 0; i < nbelm; i++) {
unsigned idnode1 = this->cells[i].getVertex1().getId();
unsigned idnode2 = this->cells[i].getVertex2().getId();
Cell2D *curr_cell = &this->cells[i];
for (unsigned j = 0; j < nbelm; j++) {
Cell2D *runn_cell = &this->cells[j];
if (curr_cell != runn_cell) {
unsigned cnt = 0;
if (idnode1 == runn_cell->getVertex1().getId()) cnt = cnt + 1;
if (idnode2 == runn_cell->getVertex1().getId()) cnt = cnt + 1;
if (idnode1 == runn_cell->getVertex2().getId()) cnt = cnt + 1;
if (idnode2 == runn_cell->getVertex2().getId()) cnt = cnt + 1;
if (idnode1 == runn_cell->getVertex3().getId()) cnt = cnt + 1;
if (idnode2 == runn_cell->getVertex3().getId()) cnt = cnt + 1;
if (idnode1 == runn_cell->getVertex4().getId()) cnt = cnt + 1;
if (idnode2 == runn_cell->getVertex4().getId()) cnt = cnt + 1;
if (cnt == 2) {
this->cells[i].setNeighbor1(runn_cell);
}
}
}
}
for (unsigned i = 0; i < nbelm; i++) {
unsigned idnode1 = this->cells[i].getVertex2().getId();
unsigned idnode2 = this->cells[i].getVertex3().getId();
Cell2D *curr_cell = &this->cells[i];
for (unsigned j = 0; j < nbelm; j++) {
Cell2D *runn_cell = &this->cells[j];
if (curr_cell != runn_cell) {
unsigned cnt = 0;
if (idnode1 == runn_cell->getVertex1().getId()) cnt = cnt + 1;
if (idnode2 == runn_cell->getVertex1().getId()) cnt = cnt + 1;
if (idnode1 == runn_cell->getVertex2().getId()) cnt = cnt + 1;
if (idnode2 == runn_cell->getVertex2().getId()) cnt = cnt + 1;
if (idnode1 == runn_cell->getVertex3().getId()) cnt = cnt + 1;
if (idnode2 == runn_cell->getVertex3().getId()) cnt = cnt + 1;
if (idnode1 == runn_cell->getVertex4().getId()) cnt = cnt + 1;
if (idnode2 == runn_cell->getVertex4().getId()) cnt = cnt + 1;
if (cnt == 2) {
this->cells[i].setNeighbor2(runn_cell);
}
}
}
}
for (unsigned i = 0; i < nbelm; i++) {
unsigned idnode1 = this->cells[i].getVertex3().getId();
unsigned idnode2 = this->cells[i].getVertex4().getId();
Cell2D *curr_cell = &this->cells[i];
for (unsigned j = 0; j < nbelm; j++) {
Cell2D *runn_cell = &this->cells[j];
if (curr_cell != runn_cell) {
unsigned cnt = 0;
if (idnode1 == runn_cell->getVertex1().getId()) cnt = cnt + 1;
if (idnode2 == runn_cell->getVertex1().getId()) cnt = cnt + 1;
if (idnode1 == runn_cell->getVertex2().getId()) cnt = cnt + 1;
if (idnode2 == runn_cell->getVertex2().getId()) cnt = cnt + 1;
if (idnode1 == runn_cell->getVertex3().getId()) cnt = cnt + 1;
if (idnode2 == runn_cell->getVertex3().getId()) cnt = cnt + 1;
if (idnode1 == runn_cell->getVertex4().getId()) cnt = cnt + 1;
if (idnode2 == runn_cell->getVertex4().getId()) cnt = cnt + 1;
if (cnt == 2) {
this->cells[i].setNeighbor3(runn_cell);
}
}
}
}
for (unsigned i = 0; i < nbelm; i++) {
unsigned idnode1 = this->cells[i].getVertex4().getId();
unsigned idnode2 = this->cells[i].getVertex1().getId();
Cell2D *curr_cell = &this->cells[i];
for (unsigned j = 0; j < nbelm; j++) {
Cell2D *runn_cell = &this->cells[j];
if (curr_cell != runn_cell) {
unsigned cnt = 0;
if (idnode1 == runn_cell->getVertex1().getId()) cnt = cnt + 1;
if (idnode2 == runn_cell->getVertex1().getId()) cnt = cnt + 1;
if (idnode1 == runn_cell->getVertex2().getId()) cnt = cnt + 1;
if (idnode2 == runn_cell->getVertex2().getId()) cnt = cnt + 1;
if (idnode1 == runn_cell->getVertex3().getId()) cnt = cnt + 1;
if (idnode2 == runn_cell->getVertex3().getId()) cnt = cnt + 1;
if (idnode1 == runn_cell->getVertex4().getId()) cnt = cnt + 1;
if (idnode2 == runn_cell->getVertex4().getId()) cnt = cnt + 1;
if (cnt == 2) {
this->cells[i].setNeighbor4(runn_cell);
}
}
}
}
}
void FvmMesh2D::writeVtk() {
string str = mshReader.getFname() + ".vtk";
vector<Point> coordNodes = mshReader.getCoordNodes();
vector<NodeIdent> idNodes = mshReader.getIdNodes();
unsigned nbNodes = mshReader.getNbNode();
unsigned nbElm = mshReader.getNbElm();
ofstream outfile(str);
outfile.setf(ios::fixed, ios::floatfield);
outfile.precision(10);
outfile << "# vtk DataFile Version 2.0" << endl;
outfile << "VTK Format for unstructured grid" << endl;
outfile << "ASCII" << endl;
outfile << "DATASET POLYDATA" << endl;
outfile << "POINTS " << nbNodes << " float" << endl;
for (unsigned i = 0; i < nbNodes; i++) {
outfile << setw(15) << coordNodes[i].getX() << " " << setw(15) << coordNodes[i].getY() << " " << setw(15) << 0.0f << " " << endl;
}
outfile << "POLYGONS " << nbElm << " " << 5 * nbElm << endl;
for (unsigned i = 0; i < nbElm; i++) {
outfile << 4 << " " << idNodes[i].getIdNode()[5] - 1 << " " << idNodes[i].getIdNode()[6] - 1 << " " << idNodes[i].getIdNode()[7] - 1 << " " << idNodes[i].getIdNode()[8] - 1 << endl;
}
outfile << "CELL_DATA " << nbElm << endl;
outfile << "SCALARS CELL_IDENT integer 1" << endl;
outfile << "LOOKUP_TABLE default " << endl;
for (unsigned i = 0; i < nbElm; i++) {
outfile << this->cells[i].getIdent() << endl;
}
outfile << "SCALARS NEIGHBOR1 integer 1" << endl;
outfile << "LOOKUP_TABLE default " << endl;
for (unsigned i = 0; i < nbElm; i++) {
Cell2D *curr_cell = this->cells[i].getNeighbor1();
if (curr_cell != nullptr) {
outfile << curr_cell->getIdent() << endl;
} else {
outfile << -1 << endl;
}
}
outfile << "SCALARS NEIGHBOR2 integer 1" << endl;
outfile << "LOOKUP_TABLE default " << endl;
for (unsigned i = 0; i < nbElm; i++) {
Cell2D *curr_cell = this->cells[i].getNeighbor2();
if (curr_cell != nullptr) {
outfile << curr_cell->getIdent() << endl;
} else {
outfile << -1 << endl;
}
}
outfile << "SCALARS NEIGHBOR3 integer 1" << endl;
outfile << "LOOKUP_TABLE default " << endl;
for (unsigned i = 0; i < nbElm; i++) {
Cell2D *curr_cell = this->cells[i].getNeighbor3();
if (curr_cell != nullptr) {
outfile << curr_cell->getIdent() << endl;
} else {
outfile << -1 << endl;
}
}
outfile << "SCALARS NEIGHBOR4 integer 1" << endl;
outfile << "LOOKUP_TABLE default " << endl;
for (unsigned i = 0; i < nbElm; i++) {
Cell2D *curr_cell = this->cells[i].getNeighbor4();
if (curr_cell != nullptr) {
outfile << curr_cell->getIdent() << endl;
} else {
outfile << -1 << endl;
}
}
outfile.close();
}
void FvmMesh2D::writeTecplot() {
/*
* Write converted mesh file in Tecplot 2009 compatible format
*/
string str = mshReader.getFname() + ".dat";
vector<Point> coordNodes = mshReader.getCoordNodes();
vector<NodeIdent> idNodes = mshReader.getIdNodes();
unsigned nbNodes = mshReader.getNbNode();
unsigned nbElm = mshReader.getNbElm();
ofstream outfile(str);
outfile.setf(ios::fixed, ios::floatfield);
outfile.precision(10);
outfile << "VARIABLES=X,Y,CELL_IDENT,NEIGHBOR1,NEIGHBOR2,NEIGHBOR3,NEIGHBOR4" << endl;
outfile << "VARIABLES=X,Y" << endl;
outfile << "ZONE T=\"UNSTRUCTURED-COUNTOUR\"" << endl;
outfile << "ZONETYPE=FEPOLYGON" << endl;
outfile << "NODES=" << nbNodes << endl;
outfile << "ELEMENTS=" << nbElm << endl;
outfile << "FACES=" << nbElm * 4 << endl;
outfile << "NumConnectedBoundaryFaces=0" << endl;
outfile << "TotalNumBoundaryConnections=0" << endl;
for (unsigned i = 0; i < nbNodes; i++) {
outfile << setw(15) << coordNodes[i].getX() << endl;
}
for (unsigned i = 0; i < nbNodes; i++) {
outfile << setw(15) << coordNodes[i].getY() << endl;
}
/*
* Node indexes
*/
for (unsigned i = 0; i < nbElm; i++) {
outfile << idNodes[i].getIdNode()[5] << " " << idNodes[i].getIdNode()[6] << endl;
outfile << idNodes[i].getIdNode()[6] << " " << idNodes[i].getIdNode()[7] << endl;
outfile << idNodes[i].getIdNode()[7] << " " << idNodes[i].getIdNode()[8] << endl;
outfile << idNodes[i].getIdNode()[8] << " " << idNodes[i].getIdNode()[5] << endl;
}
for (unsigned i = 0; i < nbElm; i++) {
outfile << i + 1 << " " << i + 1 << " " << i + 1 << " " << i + 1 << " " << endl;
}
for (unsigned i = 0; i < nbElm; i++) {
outfile << 0 << " " << 0 << " " << 0 << " " << 0 << " " << endl;
}
outfile.close();
}