VtkVectorWriter.h 8.21 KB
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// ============================================================================
// ==                                                                        ==
// == AMDiS - Adaptive multidimensional simulations                          ==
// ==                                                                        ==
// ==  http://www.amdis-fem.org                                              ==
// ==                                                                        ==
// ============================================================================
//
// Software License for AMDiS
//
// Copyright (c) 2010 Dresden University of Technology 
// All rights reserved.
// Authors: Simon Vey, Thomas Witkowski et al.
//
// This file is part of AMDiS
//
// See also license.opensource.txt in the distribution.



/** \file VtkVectorWriter.h */

#ifndef AMDIS_VTKVECTORWRITER_H
#define AMDIS_VTKVECTORWRITER_H

#include <boost/iostreams/filtering_stream.hpp>
#include <boost/iostreams/device/file_descriptor.hpp>
#include <boost/iostreams/filter/gzip.hpp>
#include <boost/iostreams/filter/bzip2.hpp>

#include <fstream>
#include "BasisFunction.h"
#include "DataCollector.h"
#include "FileWriter.h"
#include "SystemVector.h"

namespace AMDiS {

  
  class VtkVectorWriter
  {
  template<typename S>  
  struct Impl {
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     Impl(std::vector<DataCollector<S>*> *dc, bool writeAs3dVector_=false)
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      : dataCollector(dc),
	compress(NONE),
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	writeAs3dVector(writeAs3dVector_),
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	three(3)
    {
      degree = (*dataCollector)[0]->getFeSpace()->getBasisFcts()->getDegree();
      dim = (*dataCollector)[0]->getMesh()->getDim();
    }

    /// Writes a ParaView-VTK file.
    int writeFile(std::string name);

    /// Writes a pvtu file, which contains the links to all the rank files.
    void writeParallelFile(std::string name, int nRanks,
			   std::string fnPrefix, std::string fnPostfix);

    /// Set a compressing method for file output.
    void setCompression(FileCompression c)
    {
      compress = c;
    }
    
  protected:
    /// Writes the VTK file to an arbitrary stream.
    template<typename T>
    void writeFileToStream(T &file);

    /// Writes all coordinates of vertices and interpolation points to an output file.
    template<typename T>
    void writeVertexCoords(T &file);

    /// Writes all values of vertices and interpolation point to an output file.
    template<typename T>
    void writeVertexValues(T &file, int componentNo);

    /// Writes the connectivity of all simplices to an output file.
    template<typename T>
    void writeConnectivity(T &file);

    /// Writes the connectivity for the case dim = 2 and degree = 2 to an output file.
    template<typename T>
    void writeConnectivity_dim2_degree2(T &file);

    /// Writes the connectivity for the case dim = 2 and degree = 3 to an output file.
    template<typename T>
    void writeConnectivity_dim2_degree3(T &file);

    /// Writes the connectivity for the case dim = 2 and degree = 4 to an output file.
    template<typename T>
    void writeConnectivity_dim2_degree4(T &file);

    /// Writes a world coordinate to a given file.
    inline void writeCoord(boost::iostreams::filtering_ostream &file,
			   WorldVector<double> coord)
    {
      for (int i = 0; i < Global::getGeo(WORLD); i++)
	file << " " << std::scientific << coord[i];
      for (int i = Global::getGeo(WORLD); i < 3; i++)
	file << " "<<0.0;

      file << "\n";
    }

    /// Writes a world coordinate to a given file.
    inline void writeCoord(std::ofstream &file, WorldVector<double> coord)
    {
      for (int i = 0; i < Global::getGeo(WORLD); i++)
	file << " " << std::scientific << coord[i];
      for (int i = Global::getGeo(WORLD); i < 3; i++)
	file << " "<<0.0;

      file << "\n";
    }

    std::ostream& print(const WorldVector<double> &l, std::ostream &o) {
      for (size_t i = 0; i < static_cast<size_t>(l.getSize()); i++) {
	o << (fabs(l[i]) < 1e-40 ? 0.0 : l[i]) << " ";
      }
      for (int i = l.getSize(); i < 3; i++)
	o << 0.0 << " ";
      return o;
    }
    
    std::ostream& print(const std::vector<double> &l, std::ostream &o) {
      std::vector<double>::const_iterator it = l.begin();
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      for (size_t i = 0; i < l.size(); i++) {
	o << (fabs(l[i]) < 1e-40 ? 0.0 : l[i]) << " ";
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      }
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      if (writeAs3dVector) {
	for (int i = l.size(); i < 3; i++)
	  o << 0.0 << " ";
      }
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      return o;
    }

    template<typename T>
    std::ostream& print(const T &value, std::ostream &o) {
      o << (fabs(value) < 1e-40 ? 0.0 : value);
      return o;
    }
    
    // num_rows for scalar types
    template<typename T>
    size_t num_rows(T &v) {
      return 1;
    };
    // for WorldVectors print 3 components
    template<typename T>
    size_t num_rows(WorldVector<T> &v) {
      return three; //(writeAs3dVector ? three : static_cast<size_t>(v.getSize()));
    }
    // num_rows for vector types
    template<typename T>
    size_t num_rows(std::vector<T> &v) {
      size_t v_size = v.size();
      return (writeAs3dVector ? std::max(three,v_size) : v_size);
    };
    template<typename T>
    size_t num_rows(const std::vector<T> &v) {
      size_t v_size = v.size();
      return (writeAs3dVector ? std::max(three,v_size) : v_size);
    };
    template<typename T>
    size_t num_rows(mtl::dense_vector<T> &v) {
      size_t v_size = mtl::num_rows(v);
      return (writeAs3dVector ? std::max(three,v_size) : v_size);
    };
    template<typename T>
    size_t num_rows(const mtl::dense_vector<T> &v) {
      size_t v_size = mtl::num_rows(v);
      return (writeAs3dVector ? std::max(three,v_size) : v_size);
    };

  private:
    /// List of DataCollectors, for each component of the problem one.
    std::vector<DataCollector<S>*> *dataCollector;

    /** \brief
     * Defines if the file has to be compressed for ouput, and with which
     * kind of compress method.
     */
    FileCompression compress;

    /// Degree of the basis function of the problem.
    int degree;

    /// Dimension of the geometry.
    int dim;

    bool writeAs3dVector;
    size_t three;
  };
  public:


    /// May be used to simply write ParaView files.
    template<typename T>
    static void writeFile(DOFVector<T> *values,
			  std::string filename, 
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			  bool writeParallel = true,
			  bool writeAs3dVector = false)
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    {
      std::vector<DataCollector<T>*> dcList(0);
      dcList.push_back(new DataCollector<T>(values->getFeSpace(), values));
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      writeFile(dcList, filename, writeParallel, writeAs3dVector);
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      delete dcList[0];
    }

    /// May be used to simply write ParaView files.
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    template<typename T>
    static void writeFile(DOFVector<T> &values,
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			  std::string filename,
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			  bool writeParallel = true,
			  bool writeAs3dVector = false)
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    {
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      writeFile(&values, filename, writeParallel, writeAs3dVector);
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    }

    /// May be used to simply write ParaView files with a list of values.
    static void writeFile(std::vector<DOFVector<double>*> &values,
			  std::string filename, 
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			  bool writeParallel = true,
			  bool writeAs3dVector = false);
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    static void writeFile(WorldVector<DOFVector<double>*> &values,
			  std::string filename, 
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			  bool writeParallel = true,
			  bool writeAs3dVector = false);
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    static void writeFile(SystemVector *values,
			  std::string filename, 
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			  bool writeParallel = true,
			  bool writeAs3dVector = false);
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    template<typename T>
    static void writeFile(std::vector<DataCollector<T>*> &dcList,
			  std::string filename,
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			  bool writeParallel = true,
			  bool writeAs3dVector = false)
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    {
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      Impl<T> writer(&dcList, writeAs3dVector);
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  #ifdef HAVE_PARALLEL_DOMAIN_AMDIS
      if (writeParallel) {
	using boost::lexical_cast;

	int sPos = filename.find(".vtu");
	TEST_EXIT(sPos >= 0)("Failed to find file postfix!\n");
	std::string name = filename.substr(0, sPos);

	if (MPI::COMM_WORLD.Get_rank() == 0)
	  writer.writeParallelFile(name + ".pvtu", MPI::COMM_WORLD.Get_size(), name, ".vtu");

	filename = name + "-p" + lexical_cast<std::string>(MPI::COMM_WORLD.Get_rank()) + "-.vtu";
      }
  #endif
      writer.writeFile(filename);
    }

    /// Adds a new entry to a ParaView animation file.
    static int updateAnimationFile(std::string valueFilename,
			    std::vector< std::string > *paraViewAnimationFrames,
			    std::string animationFilename);

  };
}

#endif // AMDIS_VTKVECTORWRITER_H