Dune Core Modules (2.6.0)

subsamplingvtkwriter.hh
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1// -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
2// vi: set et ts=4 sw=2 sts=2:
3
4#ifndef DUNE_SUBSAMPLINGVTKWRITER_HH
5#define DUNE_SUBSAMPLINGVTKWRITER_HH
6
7#include <ostream>
8#include <memory>
9
10#include <dune/common/indent.hh>
11#include <dune/geometry/type.hh>
14#include <dune/grid/io/file/vtk/vtuwriter.hh>
15
22namespace Dune
23{
35 template< class GridView >
37 : public VTKWriter<GridView>
38 {
40 enum { dim = GridView::dimension };
41 enum { dimw = GridView::dimensionworld };
42 typedef typename GridView::Grid::ctype ctype;
43 typedef typename GridView::template Codim< 0 >::Entity Entity;
45 typedef typename Refinement::IndexVector IndexVector;
46 typedef typename Refinement::ElementIterator SubElementIterator;
47 typedef typename Refinement::VertexIterator SubVertexIterator;
48
49 typedef typename Base::CellIterator CellIterator;
50 typedef typename Base::FunctionIterator FunctionIterator;
51 using Base::cellBegin;
52 using Base::cellEnd;
53 using Base::celldata;
54 using Base::ncells;
55 using Base::ncorners;
56 using Base::nvertices;
57 using Base::outputtype;
58 using Base::vertexBegin;
59 using Base::vertexEnd;
60 using Base::vertexdata;
61
62 public:
77 explicit SubsamplingVTKWriter (const GridView &gridView,
78 Dune::RefinementIntervals intervals_, bool coerceToSimplex_ = false)
79 : Base(gridView, VTK::nonconforming)
80 , intervals(intervals_), coerceToSimplex(coerceToSimplex_)
81 {
82 if(intervals_.intervals() < 1) {
83 DUNE_THROW(Dune::IOError,"SubsamplingVTKWriter: Negative Subsampling " << intervals_.intervals() << " must not be used!");
84 }
85 }
98 DUNE_DEPRECATED_MSG("SubsampligVTKWriter(GV,int,bool) is deprecated, use SubsamplingVTKWriter(GV,Dune::refinement{Intervals|Levels}(int),bool)")
99 explicit SubsamplingVTKWriter (const GridView &gridView,
100 int level_, bool coerceToSimplex_ = false)
101 : SubsamplingVTKWriter(gridView, Dune::refinementIntervals(1<<level_), coerceToSimplex_)
102 { }
103
104 private:
105 GeometryType subsampledGeometryType(GeometryType geometryType)
106 {
107 return (geometryType.isCube() && !coerceToSimplex ? geometryType : GeometryTypes::simplex(dim));
108 }
109
110 template<typename SubIterator>
111 struct IteratorSelector
112 {};
113
114 SubElementIterator refinementBegin(const Refinement& refinement, Dune::RefinementIntervals intervals, IteratorSelector<SubElementIterator>)
115 {
116 return refinement.eBegin(intervals);
117 }
118
119 SubVertexIterator refinementBegin(const Refinement& refinement, Dune::RefinementIntervals intervals, IteratorSelector<SubVertexIterator>)
120 {
121 return refinement.vBegin(intervals);
122 }
123
124 SubElementIterator refinementEnd(const Refinement& refinement, Dune::RefinementIntervals intervals, IteratorSelector<SubElementIterator>)
125 {
126 return refinement.eEnd(intervals);
127 }
128
129 SubVertexIterator refinementEnd(const Refinement& refinement, Dune::RefinementIntervals intervals, IteratorSelector<SubVertexIterator>)
130 {
131 return refinement.vEnd(intervals);
132 }
133
134 template<typename Data, typename Iterator, typename SubIterator>
135 void writeData(VTK::VTUWriter& writer, const Data& data, const Iterator begin, const Iterator end, int nentries, IteratorSelector<SubIterator> sis)
136 {
137 for (auto it = data.begin(),
138 iend = data.end();
139 it != iend;
140 ++it)
141 {
142 const auto& f = *it;
143 VTK::FieldInfo fieldInfo = f.fieldInfo();
144 std::size_t writecomps = fieldInfo.size();
145 switch (fieldInfo.type())
146 {
148 break;
150 // vtk file format: a vector data always should have 3 comps (with
151 // 3rd comp = 0 in 2D case)
152 if (writecomps > 3)
153 DUNE_THROW(IOError,"Cannot write VTK vectors with more than 3 components (components was " << writecomps << ")");
154 writecomps = 3;
155 break;
157 DUNE_THROW(NotImplemented,"VTK output for tensors not implemented yet");
158 }
159 std::shared_ptr<VTK::DataArrayWriter<float> > p
160 (writer.makeArrayWriter<float>(f.name(), writecomps, nentries));
161 if(!p->writeIsNoop())
162 for (Iterator eit = begin; eit!=end; ++eit)
163 {
164 const Entity & e = *eit;
165 f.bind(e);
166 Refinement &refinement =
167 buildRefinement<dim, ctype>(eit->type(),
168 subsampledGeometryType(eit->type()));
169 for(SubIterator sit = refinementBegin(refinement,intervals,sis),
170 send = refinementEnd(refinement,intervals,sis);
171 sit != send;
172 ++sit)
173 {
174 f.write(sit.coords(),*p);
175 // expand 2D-Vectors to 3D for VTK format
176 for(unsigned j = f.fieldInfo().size(); j < writecomps; j++)
177 p->write(0.0);
178 }
179 f.unbind();
180 }
181 }
182 }
183
184
185 protected:
187 virtual void countEntities(int &nvertices, int &ncells, int &ncorners);
188
190 virtual void writeCellData(VTK::VTUWriter& writer);
191
193 virtual void writeVertexData(VTK::VTUWriter& writer);
194
196 virtual void writeGridPoints(VTK::VTUWriter& writer);
197
199 virtual void writeGridCells(VTK::VTUWriter& writer);
200
201 public:
203 using Base::addCellData;
204
205 private:
206 // hide addVertexData -- adding raw data directly without a VTKFunction
207 // currently does not make sense for subsampled meshes, as the higher order
208 // information is missing. See FS#676.
209 template<class V>
210 void addVertexData (const V& v, const std::string &name, int ncomps=1);
211 template<class V>
212 void addCellData (const V& v, const std::string &name, int ncomps=1);
213
215 bool coerceToSimplex;
216 };
217
219 template <class GridView>
220 void SubsamplingVTKWriter<GridView>::countEntities(int &nvertices, int &ncells, int &ncorners)
221 {
222 nvertices = 0;
223 ncells = 0;
224 ncorners = 0;
225 for (CellIterator it=this->cellBegin(); it!=cellEnd(); ++it)
226 {
227 Refinement &refinement = buildRefinement<dim, ctype>(it->type(), subsampledGeometryType(it->type()));
228
229 ncells += refinement.nElements(intervals);
230 nvertices += refinement.nVertices(intervals);
231 ncorners += refinement.nElements(intervals) * refinement.eBegin(intervals).vertexIndices().size();
232 }
233 }
234
235
237 template <class GridView>
239 {
240 if(celldata.size() == 0)
241 return;
242
243 // Find the names of the first scalar and vector data fields.
244 // These will be marked as the default fields (the ones that ParaView shows
245 // when the file has just been opened).
246 std::string defaultScalarField, defaultVectorField;
247 std::tie(defaultScalarField, defaultVectorField) = this->getDataNames(celldata);
248
249 writer.beginCellData(defaultScalarField, defaultVectorField);
250 writeData(writer,celldata,cellBegin(),cellEnd(),ncells,IteratorSelector<SubElementIterator>());
251 writer.endCellData();
252 }
253
255 template <class GridView>
257 {
258 if(vertexdata.size() == 0)
259 return;
260
261 // Find the names of the first scalar and vector data fields.
262 // These will be marked as the default fields (the ones that ParaView shows
263 // when the file has just been opened).
264 std::string defaultScalarField, defaultVectorField;
265 std::tie(defaultScalarField, defaultVectorField) = this->getDataNames(vertexdata);
266
267 writer.beginPointData(defaultScalarField, defaultVectorField);
268 writeData(writer,vertexdata,cellBegin(),cellEnd(),nvertices,IteratorSelector<SubVertexIterator>());
269 writer.endPointData();
270 }
271
273 template <class GridView>
275 {
276 writer.beginPoints();
277
278 std::shared_ptr<VTK::DataArrayWriter<float> > p
279 (writer.makeArrayWriter<float>("Coordinates", 3, nvertices));
280 if(!p->writeIsNoop())
281 for (CellIterator i=cellBegin(); i!=cellEnd(); ++i)
282 {
283 Refinement &refinement =
284 buildRefinement<dim, ctype>(i->type(),
285 subsampledGeometryType(i->type()));
286 for(SubVertexIterator sit = refinement.vBegin(intervals),
287 send = refinement.vEnd(intervals);
288 sit != send; ++sit)
289 {
290 FieldVector<ctype, dimw> coords = i->geometry().global(sit.coords());
291 for (int j=0; j<std::min(int(dimw),3); j++)
292 p->write(coords[j]);
293 for (int j=std::min(int(dimw),3); j<3; j++)
294 p->write(0.0);
295 }
296 }
297 // free the VTK::DataArrayWriter before touching the stream
298 p.reset();
299
300 writer.endPoints();
301 }
302
304 template <class GridView>
306 {
307 writer.beginCells();
308
309 // connectivity
310 {
311 std::shared_ptr<VTK::DataArrayWriter<int> > p1
312 (writer.makeArrayWriter<int>("connectivity", 1, ncorners));
313 // The offset within the index numbering
314 if(!p1->writeIsNoop()) {
315 int offset = 0;
316 for (CellIterator i=cellBegin(); i!=cellEnd(); ++i)
317 {
318 GeometryType coercedToType = subsampledGeometryType(i->type());
319 Refinement &refinement =
320 buildRefinement<dim, ctype>(i->type(), coercedToType);
321 for(SubElementIterator sit = refinement.eBegin(intervals),
322 send = refinement.eEnd(intervals);
323 sit != send; ++sit)
324 {
325 IndexVector indices = sit.vertexIndices();
326 for(unsigned int ii = 0; ii < indices.size(); ++ii)
327 p1->write(offset+indices[VTK::renumber(coercedToType, ii)]);
328 }
329 offset += refinement.nVertices(intervals);
330 }
331 }
332 }
333
334 // offsets
335 {
336 std::shared_ptr<VTK::DataArrayWriter<int> > p2
337 (writer.makeArrayWriter<int>("offsets", 1, ncells));
338 if(!p2->writeIsNoop()) {
339 // The offset into the connectivity array
340 int offset = 0;
341 for (CellIterator i=cellBegin(); i!=cellEnd(); ++i)
342 {
343 Refinement &refinement =
344 buildRefinement<dim, ctype>(i->type(),
345 subsampledGeometryType(i->type()));
346 unsigned int verticesPerCell =
347 refinement.eBegin(intervals).vertexIndices().size();
348 for(int element = 0; element < refinement.nElements(intervals);
349 ++element)
350 {
351 offset += verticesPerCell;
352 p2->write(offset);
353 }
354 }
355 }
356 }
357
358 // types
359 if (dim>1)
360 {
361 std::shared_ptr<VTK::DataArrayWriter<unsigned char> > p3
362 (writer.makeArrayWriter<unsigned char>("types", 1, ncells));
363 if(!p3->writeIsNoop())
364 for (CellIterator it=cellBegin(); it!=cellEnd(); ++it)
365 {
366 GeometryType coerceTo = subsampledGeometryType(it->type());
367 Refinement &refinement =
368 buildRefinement<dim, ctype>(it->type(), coerceTo);
369 int vtktype = VTK::geometryType(coerceTo);
370 for(int i = 0; i < refinement.nElements(intervals); ++i)
371 p3->write(vtktype);
372 }
373 }
374
375 writer.endCells();
376 }
377}
378
379#endif // DUNE_SUBSAMPLINGVTKWRITER_HH
vector space out of a tensor product of fields.
Definition: fvector.hh:93
Unique label for each type of entities that can occur in DUNE grids.
Definition: type.hh:277
Grid view abstract base class.
Definition: gridview.hh:60
Default exception class for I/O errors.
Definition: exceptions.hh:229
Holds the number of refined intervals per axis needed for virtual and static refinement.
Definition: base.cc:92
Writer for the output of subsampled grid functions in the vtk format.
Definition: subsamplingvtkwriter.hh:38
virtual void writeGridPoints(VTK::VTUWriter &writer)
write the positions of vertices
Definition: subsamplingvtkwriter.hh:274
virtual void writeVertexData(VTK::VTUWriter &writer)
write vertex data
Definition: subsamplingvtkwriter.hh:256
SubsamplingVTKWriter(const GridView &gridView, Dune::RefinementIntervals intervals_, bool coerceToSimplex_=false)
Construct a SubsamplingVTKWriter working on a specific GridView.
Definition: subsamplingvtkwriter.hh:77
virtual void countEntities(int &nvertices, int &ncells, int &ncorners)
count the vertices, cells and corners
Definition: subsamplingvtkwriter.hh:220
virtual void writeCellData(VTK::VTUWriter &writer)
write cell data
Definition: subsamplingvtkwriter.hh:238
virtual void writeGridCells(VTK::VTUWriter &writer)
write the connectivity array
Definition: subsamplingvtkwriter.hh:305
Iterator over the grids elements.
Definition: vtkwriter.hh:326
Writer for the ouput of grid functions in the vtk format.
Definition: vtkwriter.hh:88
void addVertexData(const std::shared_ptr< const VTKFunction > &p)
Add a grid function that lives on the vertices of the grid to the visualization.
Definition: vtkwriter.hh:634
void addCellData(const std::shared_ptr< const VTKFunction > &p)
Add a grid function that lives on the cells of the grid to the visualization.
Definition: vtkwriter.hh:587
@ tensor
tensor field (always 3x3)
@ vector
vector-valued field (always 3D, will be padded if necessary)
Dump a .vtu/.vtp files contents to a stream.
Definition: vtuwriter.hh:96
void endCellData()
finish CellData section
Definition: vtuwriter.hh:218
void beginCells()
start section for the grid cells/PolyData lines
Definition: vtuwriter.hh:272
DataArrayWriter< T > * makeArrayWriter(const std::string &name, unsigned ncomps, unsigned nitems)
acquire a DataArrayWriter
Definition: vtuwriter.hh:379
void endPointData()
finish PointData section
Definition: vtuwriter.hh:180
void beginCellData(const std::string &scalars="", const std::string &vectors="")
start CellData section
Definition: vtuwriter.hh:203
void beginPointData(const std::string &scalars="", const std::string &vectors="")
start PointData section
Definition: vtuwriter.hh:165
void endPoints()
finish section for the point coordinates
Definition: vtuwriter.hh:247
void endCells()
start section for the grid cells/PolyData lines
Definition: vtuwriter.hh:283
void beginPoints()
start section for the point coordinates
Definition: vtuwriter.hh:236
VirtualRefinement base class.
Definition: virtualrefinement.hh:292
VertexIterator vEnd(int level) const
Get a VertexIterator.
Definition: virtualrefinement.cc:51
ElementIterator eBegin(int level) const
Get an ElementIterator.
Definition: virtualrefinement.cc:66
Codim< 0 >::SubEntityIterator ElementIterator
The ElementIterator of the VirtualRefinement.
Definition: virtualrefinement.hh:299
ElementIterator eEnd(int level) const
Get an ElementIterator.
Definition: virtualrefinement.cc:81
virtual int nVertices(int level) const =0
Get the number of Vertices.
VertexIterator vBegin(int level) const
Get a VertexIterator.
Definition: virtualrefinement.cc:36
std::vector< int > IndexVector
The IndexVector of the VirtualRefinement.
Definition: virtualrefinement.hh:312
Codim< dimension >::SubEntityIterator VertexIterator
The VertexIterator of the VirtualRefinement.
Definition: virtualrefinement.hh:297
virtual int nElements(int level) const =0
Get the number of Elements.
#define DUNE_DEPRECATED_MSG(text)
Mark some entity as deprecated.
Definition: deprecated.hh:169
#define DUNE_THROW(E, m)
Definition: exceptions.hh:216
@ dimensionworld
The dimension of the world the grid lives in.
Definition: gridview.hh:131
@ dimension
The dimension of the grid.
Definition: gridview.hh:127
constexpr GeometryType simplex(unsigned int dim)
Returns a GeometryType representing a simplex of dimension dim.
Definition: type.hh:696
RefinementIntervals refinementIntervals(int intervals)
Creates a RefinementIntervals object.
Definition: base.cc:106
Utility class for handling nested indentation in output.
Dune namespace.
Definition: alignedallocator.hh:10
Static tag representing a codimension.
Definition: dimension.hh:22
A unique label for each type of element that can occur in a grid.
This file contains the virtual wrapper around refinement.
Provides file i/o for the visualization toolkit.
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