/usr/include/dune/grid-glue/adapter/gridgluevtkwriter.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: GridGlueVtkWriter.hh
* Version: 1.0
* Created on: Mar 5, 2009
* Author: Gerrit Buse
* ---------------------------------
* Project: dune-grid-glue
* Description: Class thought to make graphical debugging of couplings easier.
*
*/
/**
* @file
* @brief Write all remote intersections to a vtk file for debugging
*/
#ifndef DUNE_GRIDGLUE_ADAPTER_GRIDGLUEVTKWRITER_HH
#define DUNE_GRIDGLUE_ADAPTER_GRIDGLUEVTKWRITER_HH
#include <fstream>
#include <iomanip>
#include <vector>
#include <dune/common/classname.hh>
#include <dune/common/typetraits.hh>
#include <dune/geometry/type.hh>
#include <dune/geometry/referenceelements.hh>
namespace Dune {
namespace GridGlue {
/** \brief Write remote intersections to a vtk file for debugging purposes
*/
class GridGlueVtkWriter
{
/** \brief Write either the grid0 or the grid1-side into streams
* \tparam side Write the grid0-side if this is 0, and grid1 if it is 1.
*/
template <class Glue, int side>
static void writeExtractedPart(const Glue& glue, const std::string& filename)
{
static_assert((side==0 || side==1), "'side' can only be 0 or 1");
std::ofstream fgrid;
fgrid.open(filename.c_str());
typedef typename Dune::conditional<(side==0), typename Glue::Grid0View, typename Glue::Grid1View>::type GridView;
typedef typename Dune::conditional<(side==0), typename Glue::Grid0Patch, typename Glue::Grid1Patch>::type Extractor;
typedef typename GridView::ctype ctype;
const int domdimw = GridView::dimensionworld;
const int patchDim = Extractor::dim - Extractor::codim;
// coordinates have to be in R^3 in the VTK format
std::string coordinatePadding;
for (int i=domdimw; i<3; i++)
coordinatePadding += " 0";
fgrid << "# vtk DataFile Version 2.0\nFilename: " << filename << "\nASCII" << std::endl;
// WRITE POINTS
// ----------------
std::vector<typename Extractor::Coords> coords;
glue.template patch<side>().getCoords(coords);
fgrid << ((patchDim==3) ? "DATASET UNSTRUCTURED_GRID" : "DATASET POLYDATA") << std::endl;
fgrid << "POINTS " << coords.size() << " " << Dune::className<ctype>() << std::endl;
for (size_t i=0; i<coords.size(); i++)
fgrid << coords[i] << coordinatePadding << std::endl;
fgrid << std::endl;
// WRITE POLYGONS
// ----------------
std::vector<typename Extractor::VertexVector> faces;
std::vector<Dune::GeometryType> geometryTypes;
glue.template patch<side>().getFaces(faces);
glue.template patch<side>().getGeometryTypes(geometryTypes);
unsigned int faceCornerCount = 0;
for (size_t i=0; i<faces.size(); i++)
faceCornerCount += faces[i].size();
fgrid << ((patchDim==3) ? "CELLS " : "POLYGONS ")
<< geometryTypes.size() << " " << geometryTypes.size() + faceCornerCount << std::endl;
for (size_t i=0; i<faces.size(); i++) {
fgrid << faces[i].size();
// vtk expects the vertices to by cyclically ordered
// therefore unfortunately we have to deal with several element types on a case-by-case basis
if (geometryTypes[i].isSimplex()) {
for (int j=0; j<patchDim+1; j++)
fgrid << " " << faces[i][j];
} else if (geometryTypes[i].isQuadrilateral()) {
fgrid << " " << faces[i][0] << " " << faces[i][1]
<< " " << faces[i][3] << " " << faces[i][2];
} else if (geometryTypes[i].isPyramid()) {
fgrid << " " << faces[i][0] << " " << faces[i][1]
<< " " << faces[i][3] << " " << faces[i][2] << " " << faces[i][4];
} else if (geometryTypes[i].isPrism()) {
fgrid << " " << faces[i][0] << " " << faces[i][2] << " " << faces[i][1]
<< " " << faces[i][3] << " " << faces[i][5] << " " << faces[i][4];
} else if (geometryTypes[i].isHexahedron()) {
fgrid << " " << faces[i][0] << " " << faces[i][1]
<< " " << faces[i][3] << " " << faces[i][2]
<< " " << faces[i][4] << " " << faces[i][5]
<< " " << faces[i][7] << " " << faces[i][6];
} else {
DUNE_THROW(Dune::NotImplemented, "Geometry type " << geometryTypes[i] << " not supported yet");
}
fgrid << std::endl;
}
fgrid << std::endl;
// 3d VTK files need an extra section specifying the CELL_TYPES aka GeometryTypes
if (patchDim==3) {
fgrid << "CELL_TYPES " << geometryTypes.size() << std::endl;
for (size_t i=0; i<geometryTypes.size(); i++) {
if (geometryTypes[i].isSimplex())
fgrid << "10" << std::endl;
else if (geometryTypes[i].isHexahedron())
fgrid << "12" << std::endl;
else if (geometryTypes[i].isPrism())
fgrid << "13" << std::endl;
else if (geometryTypes[i].isPyramid())
fgrid << "14" << std::endl;
else
DUNE_THROW(Dune::NotImplemented, "Geometry type " << geometryTypes[i] << " not supported yet");
}
}
#if 0
// WRITE CELL DATA
// ---------------
ctype accum = 0.0, delta = 1.0 / (ctype) (gridSubEntityData.size()-1);
fgrid << "CELL_DATA " << gridSubEntityData.size() << std::endl;
fgrid << "SCALARS property_coding " << Dune::className<ctype>() << " 1" << std::endl;
fgrid << "LOOKUP_TABLE default" << std::endl;
for (typename GridSubEntityData::const_iterator sEIt = gridSubEntityData.begin();
sEIt != gridSubEntityData.end();
++sEIt, accum += delta)
{
// "encode" the parent with one color...
fgrid << accum << std::endl;
}
#endif
fgrid.close();
}
/** \brief Write either the grid0 or the grid1-side into streams
* \tparam side Write the grid0-side if this is 0, and grid1 if it is 1.
*/
template <class Glue, int side>
static void writeIntersections(const Glue& glue, const std::string& filename)
{
static_assert((side==0 || side==1), "'side' can only be 0 or 1");
std::ofstream fmerged;
fmerged.open(filename.c_str());
typedef typename Dune::conditional<(side==0), typename Glue::Grid0View, typename Glue::Grid1View>::type GridView;
typedef typename Dune::conditional<(side==0),
typename Glue::Grid0IntersectionIterator,
typename Glue::Grid1IntersectionIterator>::type RemoteIntersectionIterator;
typedef typename GridView::ctype ctype;
const int domdimw = GridView::dimensionworld;
const int intersectionDim = Glue::Intersection::mydim;
// coordinates have to be in R^3 in the VTK format
std::string coordinatePadding;
for (int i=domdimw; i<3; i++)
coordinatePadding += " 0";
int overlaps = glue.size();
// WRITE POINTS
// ----------------
typedef typename Glue::Grid0Patch Extractor;
std::vector<typename Extractor::Coords> coords;
glue.template patch<side>().getCoords(coords);
// the merged grid (i.e. the set of remote intersections
fmerged << "# vtk DataFile Version 2.0\nFilename: " << filename << "\nASCII" << std::endl;
fmerged << ((intersectionDim==3) ? "DATASET UNSTRUCTURED_GRID" : "DATASET POLYDATA") << std::endl;
fmerged << "POINTS " << overlaps*(intersectionDim+1) << " " << Dune::className<ctype>() << std::endl;
for (RemoteIntersectionIterator isIt = glue.template ibegin<side>();
isIt != glue.template iend<side>();
++isIt)
{
for (int i = 0; i < isIt->geometry().corners(); ++i)
fmerged << isIt->geometry().corner(i) << coordinatePadding << std::endl;
}
// WRITE POLYGONS
// ----------------
std::vector<typename Extractor::VertexVector> faces;
std::vector<Dune::GeometryType> geometryTypes;
glue.template patch<side>().getFaces(faces);
glue.template patch<side>().getGeometryTypes(geometryTypes);
unsigned int faceCornerCount = 0;
for (size_t i=0; i<faces.size(); i++)
faceCornerCount += faces[i].size();
int grid0SimplexCorners = intersectionDim+1;
fmerged << ((intersectionDim==3) ? "CELLS " : "POLYGONS ")
<< overlaps << " " << (grid0SimplexCorners+1)*overlaps << std::endl;
for (int i = 0; i < overlaps; ++i) {
fmerged << grid0SimplexCorners;
for (int j=0; j<grid0SimplexCorners; j++)
fmerged << " " << grid0SimplexCorners*i+j;
fmerged << std::endl;
}
// 3d VTK files need an extra section specifying the CELL_TYPES aka GeometryTypes
if (intersectionDim==3) {
fmerged << "CELL_TYPES " << overlaps << std::endl;
for (int i = 0; i < overlaps; i++)
fmerged << "10" << std::endl;
}
#if 0
// WRITE CELL DATA
// ---------------
ctype accum = 0.0, delta = 1.0 / (ctype) (gridSubEntityData.size()-1);
fmerged << "CELL_DATA " << overlaps << std::endl;
fmerged << "SCALARS property_coding " << Dune::className<ctype>() << " 1" << std::endl;
fmerged << "LOOKUP_TABLE default" << std::endl;
for (typename GridSubEntityData::const_iterator sEIt = gridSubEntityData.begin();
sEIt != gridSubEntityData.end();
++sEIt, accum += delta)
{
// ...and mark all of its merged grid parts with the same color
for (int j = 0; j < sEIt->first.second; ++j)
fmerged << accum << std::endl;
}
#endif
fmerged.close();
}
public:
template<typename Glue>
static void write(const Glue& glue, const std::string& filenameTrunk)
{
// Write extracted grid and remote intersection on the grid0-side
writeExtractedPart<Glue,0>(glue,
filenameTrunk + "-grid0.vtk");
writeIntersections<Glue,0>(glue,
filenameTrunk + "-intersections-grid0.vtk");
// Write extracted grid and remote intersection on the grid1-side
writeExtractedPart<Glue,1>(glue,
filenameTrunk + "-grid1.vtk");
writeIntersections<Glue,1>(glue,
filenameTrunk + "-intersections-grid1.vtk");
}
};
} /* namespace GridGlue */
} /* namespace Dune */
#endif // DUNE_GRIDGLUE_ADAPTER_GRIDGLUEVTKWRITER_HH
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