FaceEnumerator.h

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// This file is part of the Peano project. For conditions of distribution and
// use, please see the copyright notice at www.peano-framework.org
#pragma once
 
 
#include "peano4/utils/Globals.h"
#include "tarch/Assertions.h"
 
 
namespace peano4 {
  namespace datamanagement {
    template <class Face>
    class FaceEnumerator;
  }
}
 
 
template <class Face>
class peano4::datamanagement::FaceEnumerator {
  private:
    Face* _faces[ TwoTimesD ];
 
  public:
    FaceEnumerator() {
      #if PeanoDebug>0
      for (int i=0; i<TwoTimesD; i++) {
        _faces[i] = nullptr;
      }
      #endif
    }
 
 
    FaceEnumerator(Face* firstFace) {
      assertion(firstFace!=nullptr);
      for (int i=0; i<TwoTimesD; i++) {
        _faces[i] = firstFace+i;
      }
    }
 
    void setPointer(int i, Face* value) {
      assertion(i>=0);
      assertion(i<TwoTimesD);
      assertion(value!=nullptr);
      _faces[i] = value;
    }
 
    Face& operator()(int i) const {
      assertion1(i>=0,i);
      assertion1(i<TwoTimesD,i);
      assertion1( _faces[i]!=nullptr,i );
      return *(_faces[i]);
    }
};