AF2Edge3D.hpp

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/*
 * AF2Edge3D.hpp
 *
 * An edge (or half-edge) that connects two AF2Point3D points, one labeled
 * as the start of the edge, and the other labeled as the end of the edge.
 *
 * This class holds on to its endpoints with pointers, but it does not
 * manage the memory for its endpoints.  It is the reponsibility of the
 * context that uses AF2Edge3D to ensure that pointers to endpoints of edges
 * remain valid as long as they may be referenced by an AF2Edge3D instance.
 */
#ifndef AF2EDGE3D_HPP
#define AF2EDGE3D_HPP

// C++
#include <list>

// MeshKit
#include "meshkit/AF2Point3D.hpp"

class QualityDecreaseObserver;

class AF2Edge3D
{
  private:

    AF2Point3D* startPnt;
    AF2Point3D* endPnt;
    unsigned int qualityLevel;
    QualityDecreaseObserver* observer;

  public:

    AF2Edge3D(AF2Point3D* start, AF2Point3D* end);

    void decreaseQuality();

    AF2Point3D* getStart() const;

    AF2Point3D* getEnd() const;

    unsigned int getQualityLevel() const;

    void setObserver(QualityDecreaseObserver* observerArg);
};

class QualityDecreaseObserver
{
  friend void AF2Edge3D::decreaseQuality();

  protected:
    virtual void qualityDecreased(const AF2Edge3D* const & anEdge) = 0;
};

#endif