apfCavityOp.h

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/*
 * Copyright 2011 Scientific Computation Research Center
 *
 * This work is open source software, licensed under the terms of the
 * BSD license as described in the LICENSE file in the top-level directory.
 */

#ifndef APFCAVITYOP_H
#define APFCAVITYOP_H

#include "apfMesh.h"
#include <vector>
#include <cstring>

namespace apf {

class CavityOp
{
  public:
    CavityOp(Mesh* m, bool canModify = false);
    enum Outcome {
      SKIP,
      OK,
      REQUEST };
    virtual Outcome setEntity(MeshEntity* e) = 0;
    virtual void apply() = 0;
    void applyToDimension(int d);
    bool requestLocality(MeshEntity** entities, int count);
    void preDeletion(MeshEntity* e);
    Mesh* mesh;
  private:
    typedef std::vector<MeshEntity*> Requests;
    Requests requests;
    bool isRequesting;
    struct PullRequest { MeshEntity* e; int to; };
    bool sendPullRequests(std::vector<PullRequest>& received);
    bool tryToPull();
    void applyLocallyWithModification(int d);
    void applyLocallyWithoutModification(int d);
    bool canModify;
    bool movedByDeletion;
    MeshIterator* iterator;
  protected:
    Sharing* sharing;
};

} //namespace apf

#endif