void extractInternalFaces(const Dune::CpGrid& grid,
Eigen::Array<int, Eigen::Dynamic, 1>& internal_faces,
Eigen::Array<int, Eigen::Dynamic, 2, Eigen::RowMajor>& nbi)
{
// Extracts the internal faces of the grid.
// These are stored in internal_faces.
int nf=numFaces(grid);
int num_internal=0;
for(int f=0; f<nf; ++f)
{
if(grid.faceCell(f, 0)<0 || grid.faceCell(f, 1)<0)
continue;
++num_internal;
}
// std::cout << num_internal << " internal faces." << std::endl;
nbi.resize(num_internal, 2);
internal_faces.resize(num_internal);
int fi = 0;
for (int f = 0; f < nf; ++f) {
if(grid.faceCell(f, 0)>=0 && grid.faceCell(f, 1)>=0) {
internal_faces[fi] = f;
nbi(fi,0) = grid.faceCell(f, 0);
nbi(fi,1) = grid.faceCell(f, 1);
++fi;
}
}
}
void extractInternalFaces(const UnstructuredGrid& grid,
Eigen::Array<int, Eigen::Dynamic, 1>& internal_faces,
Eigen::Array<int, Eigen::Dynamic, 2, Eigen::RowMajor>& nbi)
{
typedef Eigen::Array<bool, Eigen::Dynamic, 1> OneColBool;
typedef Eigen::Array<int, Eigen::Dynamic, 2, Eigen::RowMajor> TwoColInt;
typedef Eigen::Array<bool, Eigen::Dynamic, 2, Eigen::RowMajor> TwoColBool;
TwoColInt nb = faceCells(grid);
// std::cout << "nb = \n" << nb << std::endl;
// Extracts the internal faces of the grid.
// These are stored in internal_faces.
TwoColBool nbib = nb >= 0;
OneColBool ifaces = nbib.rowwise().all();
const int num_internal = ifaces.cast<int>().sum();
// std::cout << num_internal << " internal faces." << std::endl;
nbi.resize(num_internal, 2);
internal_faces.resize(num_internal);
int fi = 0;
int nf = numFaces(grid);
for (int f = 0; f < nf; ++f) {
if (ifaces[f]) {
internal_faces[fi] = f;
nbi.row(fi) = nb.row(f);
++fi;
}
}
}
void BinaryInputStream::readVector (Eigen::Array<FinalType,Rows,1> &values, size_t n)
{
values.resize(n);
SourceType value;
for (size_t i=0; i<n; i++)
{
stream->read((char *) &value, sizeof(SourceType));
if (swapEndian)
swap(&value);
values[i] = static_cast<FinalType>(value);
}
}
void LQCDA::readVector(AsciiReader& reader, Eigen::Array<double, Eigen::Dynamic, 1>& output)
{
try {
int i;
reader.read(i);
output.resize(i);
for(int _i=0; _i<i; ++_i)
reader.read(output(_i));
}
catch (const IOException& e) {
}
}
//-----------------------------------------------------------
// Utility functions
//-----------------------------------------------------------
void LQCDA::readArray(AsciiReader& reader, Eigen::Array<double, Eigen::Dynamic, Eigen::Dynamic>& output)
{
try {
std::string line;
reader.readLine(line);
std::istringstream isstr (line);
int i, j;
isstr >> i >> j;
output.resize(i, j);
for(int _i=0; _i<i; ++_i)
for(int _j=0; _j<j; ++_j)
{
reader.read(output(_i,_j));
}
}
catch (const IOException& e) {
}
}