/usr/include/dune/grid-glue/extractors/vtksurfacewriter.hh is in libdune-grid-glue-dev 2.4.0-1build1.
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// vi: set et ts=4 sw=2 sts=2:
/*
* Filename: VtkSurfaceWriter.hh
* Version: 1.0
* Created on: Jan 16, 2009
* Author: Gerrit Buse
* ---------------------------------
* Project: dune-grid-glue
* Description: helper class for graphical output of grids in generic representation
*
*/
/**
* @file
* @brief helper class for graphical output of grids in generic representation
*/
#ifndef DUNE_GRIDGLUE_EXTRACTORS_VTKSURFACEWRITER_HH
#define DUNE_GRIDGLUE_EXTRACTORS_VTKSURFACEWRITER_HH
#include <fstream>
#include <iomanip>
#include <vector>
#include <cstring>
#include "../adapter/gridgluevtkwriter.hh"
namespace Dune {
namespace GridGlue {
class VtkSurfaceWriter
{
public:
VtkSurfaceWriter(const char* filename) : filename_(filename)
{}
~VtkSurfaceWriter()
{}
void setFilename(const char* name)
{
if (std::strlen(name) > 0)
this->filename_ = name;
}
template<typename K>
void writeSurface(const std::vector<K>& coords, const std::vector<unsigned int>& indices, int corners, int dim)
{
std::ofstream fos;
char buffer[64];
sprintf(buffer, "%s.vtk", this->filename_);
fos.open(buffer);
fos << std::setprecision(8) << std::setw(1);
// write preamble
fos << "# vtk DataFile Version 2.0\nFilename: " << buffer << "\nASCII" << std::endl;
this->writePoints(coords, dim, fos);
const int polycount = indices.size()/corners;
int corner_count[polycount];
for (int i = 0; i < polycount; ++i)
corner_count[i] = corners;
this->writePolygons(indices, corner_count, polycount, dim, fos);
fos.close();
}
template<typename K, typename T>
void writeSurfaceElementData(const std::vector<K>& coords, const std::vector<unsigned int>& indices, int corners, const std::vector<T>& data, const char* dataname, int dim)
{
std::ofstream fos;
char buffer[64];
sprintf(buffer, "%s.vtk", this->filename_);
fos.open(buffer);
fos << std::setprecision(8) << std::setw(1);
// write preamble
fos << "# vtk DataFile Version 2.0\nFilename: " << buffer << "\nASCII" << std::endl;
this->writePoints(coords, dim, fos);
const int polycount = indices.size()/corners;
int corner_count[polycount];
for (int i = 0; i < polycount; ++i)
corner_count[i] = corners;
this->writePolygons(indices, corner_count, polycount, dim, fos);
this->writeCellData(data, dataname, dim, fos);
fos.close();
}
template<typename K, typename T>
void writeSurfaceVertexData(const std::vector<K>& coords, const std::vector<unsigned int>& indices, int corners, const std::vector<T>& data, const char* dataname, int dim)
{
std::ofstream fos;
char buffer[64];
sprintf(buffer, "%s.vtk", this->filename_);
fos.open(buffer);
fos << std::setprecision(8) << std::setw(1);
// write preamble
fos << "# vtk DataFile Version 2.0\nFilename: " << buffer << "\nASCII" << std::endl;
this->writePoints(coords, dim, fos);
const int polycount = indices.size()/corners;
int corner_count[polycount];
for (int i = 0; i < polycount; ++i)
corner_count[i] = corners;
this->writePolygons(indices, corner_count, polycount, dim, fos);
this->writePointData(data, dataname, dim, fos);
fos.close();
}
protected:
template<typename K>
void writePoints(const std::vector<K>& coords, int dim, std::ofstream& fos)
{
fos << "DATASET POLYDATA\nPOINTS " << coords.size() << " " << TypeNames[Nametraits<K>::nameidx] << std::endl;
for (unsigned int i = 0; i < coords.size(); ++i)
{
fos << coords[i][0];
if (dim == 2)
fos << " " << coords[i][1] << " 0 \n" << coords[i][0] << " " << coords[i][1] << " 0.01" << std::endl;
else // dim == 3
fos << " " << coords[i][1] << " " << coords[i][2] << std::endl;
}
}
void writePolygons(const std::vector<unsigned int>& indices, const int* corners, int ncorners, int dim, std::ofstream& fos)
{
if (dim == 2)
{
fos << "POLYGONS " << indices.size()/2 << " " << 5*(indices.size() / 2) << std::endl;
for (unsigned int i = 0; i < indices.size(); i += 2)
fos << "4 " << 2*indices[i] << " " << 2*indices[i+1] << " " << 2*indices[i+1]+1 << " "<< 2*indices[i]+1 << std::endl;
// arbitrary shapes - ignored here!
// int sum = ncorners;
// for (int i = 0; i < ncorners; ++i)
// sum += (corners[i] > 2 ? corners[i] : 3);
//
// fos << "POLYGONS " << ncorners << " " << sum << std::endl;
// int index = 0;
// for (int i = 0; i < ncorners; ++i)
// {
// // write the first index twice if it is an egde
// // => triangle instead of edge - paraview can display it then
// if (corners[i] > 2)
// fos << corners[i];
// else
// fos << "3 " << indices[index];
//
// for (int j = 0; j < corners[i]; ++j)
// fos << " " << indices[index++];
// fos << std::endl;
// }
}
else
{
int sum = ncorners;
for (int i = 0; i < ncorners; ++i)
sum += corners[i];
fos << "POLYGONS " << ncorners << " " << sum << std::endl;
int index = 0;
for (int i = 0; i < ncorners; ++i)
{
fos << corners[i];
for (int j = 0; j < corners[i]; ++j)
fos << " " << indices[index++];
fos << std::endl;
}
}
}
template<typename T>
void writeCellData(const std::vector<T>& data, const char* dataname, int dim, std::ofstream& fos)
{
fos << "CELL_DATA " << data.size()*(dim == 2 ? 2 : 1) << std::endl;
fos << "SCALARS " << dataname << " " << TypeNames[Nametraits<T>::nameidx] << " 1" << std::endl;
fos << "LOOKUP_TABLE default" << std::endl;
for (unsigned int i = 0; i < data.size(); ++i)
{
fos << data[i] << std::endl;
if (dim == 2)
fos << data[i] << std::endl;
}
}
template<typename T>
void writePointData(const std::vector<T>& data, const char* dataname, int dim, std::ofstream& fos)
{
fos << "POINT_DATA " << data.size()*(dim == 2 ? 2 : 1) << std::endl;
fos << "SCALARS " << dataname << " " << TypeNames[Nametraits<T>::nameidx] << " 1" << std::endl;
fos << "LOOKUP_TABLE default" << std::endl;
for (unsigned int i = 0; i < data.size(); ++i)
{
fos << data[i] << std::endl;
if (dim == 2)
fos << data[i] << std::endl;
}
}
private:
const char* filename_;
};
} // namespace GridGlue
} // namespace Dune
#endif // DUNE_GRIDGLUE_EXTRACTORS_VTKSURFACEWRITER_HH
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