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// ============================================================================
// ==                                                                        ==
// == AMDiS - Adaptive multidimensional simulations                          ==
// ==                                                                        ==
// ============================================================================
// ==                                                                        ==
// ==  TU Dresden                                                            ==
// ==                                                                        ==
// ==  Institut fr Wissenschaftliches Rechnen                               ==
// ==  Zellescher Weg 12-14                                                  ==
// ==  01069 Dresden                                                         ==
// ==  germany                                                               ==
// ==                                                                        ==
// ============================================================================
// ==                                                                        ==
// ==  https://gforge.zih.tu-dresden.de/projects/amdis/                      ==
// ==                                                                        ==
// ============================================================================

/** \file ElementObjectData.h */

#ifndef AMDIS_ELEMENTOBJECTDATA_H
#define AMDIS_ELEMENTOBJECTDATA_H

#include <map>
#include <vector>
#include <boost/tuple/tuple.hpp>
#include <boost/tuple/tuple_comparison.hpp>

#include "Global.h"
#include "Boundary.h"

namespace AMDiS {

  struct ElementObjectData {
    ElementObjectData(int a = -1, int b = 0, BoundaryType c = INTERIOR)
      : elIndex(a),
	ithObject(b),
	boundaryType(c)
    {}
    
    int elIndex;
    
    int ithObject;
    
    BoundaryType boundaryType;
  };



  class ElementObjects {
  public:
    ElementObjects(std::map<int, int> vec) 
      : elementInRank(vec),
	iterGeoPos(CENTER)
    {}

    void addVertex(DegreeOfFreedom vertex, 
		   int elIndex, int ith, BoundaryType bound = INTERIOR)
    {
      vertexElements[vertex].push_back(ElementObjectData(elIndex, ith, bound));
      vertexOwner[vertex] = std::max(vertexOwner[vertex], elementInRank[elIndex]);
    }

    void addEdge(DofEdge edge, 
		 int elIndex, int ith, BoundaryType bound = INTERIOR)
    {
      edgeElements[edge].push_back(ElementObjectData(elIndex, ith, bound));
      edgeOwner[edge] = std::max(edgeOwner[edge], elementInRank[elIndex]);
    }

    void addFace(DofFace face, 
		 int elIndex, int ith, BoundaryType bound = INTERIOR)
    {
      faceElements[face].push_back(ElementObjectData(elIndex, ith, bound));
      faceOwner[face] = std::max(faceOwner[face], elementInRank[elIndex]);
    }

    void createRankData();

    bool iterate(GeoIndex pos)
    {
      if (iterGeoPos == CENTER) {
	iterGeoPos = pos;
	switch (iterGeoPos) {
	case VERTEX:
	  vertexIter = vertexInRank.begin();
	  break;
	case EDGE:
	  edgeIter = edgeInRank.begin();
	  break;
	case FACE:
	  faceIter = faceInRank.begin();
	  break;
	default:
	  ERROR_EXIT("Not GeoIndex %d!\n", iterGeoPos);
	}
      } else {
	switch (iterGeoPos) {
	case VERTEX:
	  ++vertexIter;
	  break;
	case EDGE:
	  ++edgeIter;
	  break;
	case FACE:
	  ++faceIter;
	  break;
	default:
	  ERROR_EXIT("Not GeoIndex %d!\n", iterGeoPos);
	}
      }

      switch (iterGeoPos) {
      case VERTEX:
	if (vertexIter == vertexInRank.end()) {
	  iterGeoPos = CENTER;
	  return false;
	}
	break;
      case EDGE:
	if (edgeIter == edgeInRank.end()) {
	  iterGeoPos = CENTER;
	  return false;
	}
	break;
      case FACE:
	if (faceIter == faceInRank.end()) {
	  iterGeoPos = CENTER;
	  return false;
	}
	break;
      default:
	ERROR_EXIT("Should not happen!\n");	
      }

      return true;
    }


    std::map<int, ElementObjectData>& getIterateData()
    {
      switch (iterGeoPos) {
      case VERTEX:
	return vertexIter->second;
	break;
      case EDGE:
	return edgeIter->second;
	break;
      case FACE:
	return faceIter->second;
	break;
      default:
	ERROR_EXIT("Should not happen!\n");

	// Will never be reached, just to avoid compiler warnings.
	return faceIter->second;
      }
    }


    int getIterateOwner()
    {
      switch (iterGeoPos) {
      case VERTEX:
	return vertexOwner[vertexIter->first];
	break;
      case EDGE:
	return edgeOwner[edgeIter->first];
	break;
      case FACE:
	return faceOwner[faceIter->first];
	break;
      default:
	ERROR_EXIT("Should not happen!\n");

	// Will never be reached, just to avoid compiler warnings.
	return -1;
      }
    }

    int getOwner(DegreeOfFreedom vertex)
    {
      return vertexOwner[vertex];
    }

    int getOwner(DofEdge edge)
    {
      return edgeOwner[edge];
    }

    int getOwner(DofFace face)
    {
      return faceOwner[face];
    }

    std::vector<ElementObjectData>& getElements(DegreeOfFreedom vertex)
    {
      return vertexElements[vertex];
    }

    std::vector<ElementObjectData>& getElements(DofEdge edge)
    {
      return edgeElements[edge];
    }

    std::vector<ElementObjectData>& getElements(DofFace face)
    {
      return faceElements[face];
    }

  private:
    std::map<int, int> elementInRank;

    std::map<DegreeOfFreedom, std::vector<ElementObjectData> > vertexElements;
    std::map<DofEdge, std::vector<ElementObjectData> > edgeElements;
    std::map<DofFace, std::vector<ElementObjectData> > faceElements;

    std::map<DegreeOfFreedom, int> vertexOwner;
    std::map<DofEdge, int> edgeOwner;
    std::map<DofFace, int> faceOwner;

    std::map<DegreeOfFreedom, std::map<int, ElementObjectData> > vertexInRank;
    std::map<DofEdge, std::map<int, ElementObjectData> > edgeInRank;
    std::map<DofFace, std::map<int, ElementObjectData> > faceInRank;

    std::map<DegreeOfFreedom, std::map<int, ElementObjectData> >::iterator vertexIter;
    std::map<DofEdge, std::map<int, ElementObjectData> >::iterator edgeIter;
    std::map<DofFace, std::map<int, ElementObjectData> >::iterator faceIter;

    GeoIndex iterGeoPos;
  };

}

#endif