gmFileNodeRenumbering.h

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/************************************************************************
**
** Copyright (C) 2014 by Carlos Augusto Teixera Mendes
** All rights reserved.
**
** This file is part of the "GeMA" software. It's use should respect
** the terms in the license agreement that can be found together 
** with this source code.
** It is provided AS IS, with NO WARRANTY OF ANY KIND, 
** INCLUDING THE WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR 
** A PARTICULAR PURPOSE.
**
************************************************************************/

#ifndef _GEMA_FILE_NODE_RENUMBERING_H_
#define _GEMA_FILE_NODE_RENUMBERING_H_

#include <assert.h>

#include "gmValueInfo.h"
#include "gmCellMesh.h"

class GmCellGroupSet;
class GmFileFormat;

class GmFileNodeRenumbering
{
public:
  GmFileNodeRenumbering(const GmCellMesh* mesh, GmAffectedNodes mode = GM_GEOMETRY_NODE);

  ~GmFileNodeRenumbering() { delete[] _map; }

  const GmCellMesh* mesh() const { return _mesh; }

  const GmAffectedNodes mode() const { return _mode; }

  bool filter(bool active, const GmCellGroupSet* group, const GmFileFormat* fileFormat);

  int numActiveNodes() const { return _nActiveNodes; }

  int numActiveGhostNodes() const { return _nActiveGhostNodes; }

  bool active(int node) const 
  { 
    assert(node >= 0 && node < _nMeshNodes);  
    return _map ? (_map[node] != -1) : true;
  }

  int map(int node) const
  {
    if(GmMesh::isGhostNode(node))
    {
      node = GmMesh::clearGhostFlag(node);
      if(_mode == GM_BOTH)  
        node += _mesh->numNodes();
    }

    assert(node >= 0 && node < _nMeshNodes);
    return _map ? _map[node] : node;
  }

private:
  const GmCellMesh* _mesh; 
  GmAffectedNodes   _mode; 
  int  _nMeshNodes;        
  int  _nActiveNodes;      
  int  _nActiveGhostNodes; 
  int* _map;               
};

#endif