src/MEDMEM/MEDMEM_Extractor.hxx

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// Copyright (C) 2007-2011  CEA/DEN, EDF R&D, OPEN CASCADE
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
//
// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
//

// File      : MEDMEM_Extractor.hxx
// Created   : Thu Dec 18 10:52:01 2008
// Author    : Edward AGAPOV (eap)
//
#ifndef __MEDMEM_EXTRACTOR_HXX__
#define __MEDMEM_EXTRACTOR_HXX__

#include "MEDMEM_Exception.hxx"
#include "MEDMEM_Mesh.hxx"
#include "MEDMEM_Field.hxx"

#include <map>
#include <vector>
#include <set>

namespace MEDMEM
{
  class MEDMEM_EXPORT Extractor
  {
  public:
    Extractor(const FIELD<double>& inputField) throw (MEDEXCEPTION);
    ~Extractor();
    FIELD<double>* extractPlane(const double* coords, const double* normal) throw (MEDEXCEPTION);

    FIELD<double>* extractLine(const double* coords, const double* direction) throw (MEDEXCEPTION);

  private:

    MESH* divideEdges(const double*       coords,
                      const double*       normal,
                      std::map<int,std::set<int> >& new2oldCells);
                     
    MESH* transfixFaces( const double*       coords,
                         const double*       direction,
                         std::map<int,std::set<int> >& new2oldCells);

    FIELD<double>* makeField( const std::map<int,std::set<int> >& new2oldCells,
                              MESH*                               mesh) const;

    void computeDistanceOfNodes(const double* point, const double* normal);

    void sortNodes( std::map< int, std::vector< int > >& connByNbNodes,
                    const double* nodeCoords,
                    const double* point,
                    const double* normal,
                    const std::list<int> & nbNodesPerPolygon);


    const FIELD<double>* _myInputField; 
    const MESH*          _myInputMesh;  
    std::vector<double>  _myNodeDistance; 
  };
}

#endif