SparseRowMatrixFromMap.h

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/*
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   Copyright (c) 2012 Scientific Computing and Imaging Institute,
   University of Utah.

   
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/// @todo Documentation Core/Datatypes/SparceRowMatrixFromMap.h

#ifndef CORE_DATATYPES_SPARSEMATRIXFROMMAP_H
#define CORE_DATATYPES_SPARSEMATRIXFROMMAP_H

#include <map>
#include <Core/Datatypes/MatrixFwd.h>
#include <Core/Datatypes/Legacy/Base/Types.h>
#include <Core/Datatypes/share.h>

namespace SCIRun
{
  namespace Core 
  {
    namespace Datatypes
    {
      /// @todo: refactor with some OO, please...
      class SCISHARE SparseRowMatrixFromMap
      {
      public:
        typedef std::map<index_type, double> Row;
        typedef std::map<index_type, Row> Values;

        class SCISHARE SymmetricValues
        {
        public:
          void operator()(size_t row, size_t col, double value);
          const Values& getFullValues() const;
        private:
          Values values_;
        };

        static SparseRowMatrixHandle make(size_type rows, size_type cols, const Values& values);
        static SparseRowMatrixHandle make(size_type rows, size_type cols, const SymmetricValues& values);
        static SparseRowMatrixHandle appendToSparseMatrix(size_type rows, size_type cols, const SparseRowMatrix& sparse, const Values& additionalValues);
        static SparseRowMatrixHandle appendToSparseMatrixSumming(size_type rows, size_type cols, const SparseRowMatrix& sparse, const Values& additionalValues);
      private:
        SparseRowMatrixFromMap();

        static size_type get_nnz(const Values& data);
      };
    }
  }
}

#endif