#ifndef HIT_H
#define HIT_H

#include "Digit.h"
#include "DataSvc/Ref.h"

namespace pool_tutorial {

  class Transformation;

  // A hit class with a reference to its associated digit
  class Hit {
  public:
    // Default constructor
    Hit();

    // Copy constructor
    Hit( const Hit& rhs );

    // Destructor
    virtual ~Hit();

    // Assignment operator
    Hit& operator=( const Hit& rhs );

    // access methods
    double x() const;
    double y() const;
    double z() const;
    double value() const;

    // access method of the associated digit
    Digit& digit();
    const Digit& digit() const;

    // Establishes an association with a digit
    void setDigit( const pool::Ref< Digit >& digit );

    // Sets the associated transformation object
    void setTransformation( Transformation* transformation );

  private:
    // The three coordinates.
    double m_x;
    double m_y;
    double m_z;

    // The value of the hit
    double m_value;

    // Flag indicating whether the values are updated
    bool m_upToDate;

    // Pointer to the transformation object
    Transformation* m_transformation;

    // The association to the digit
    pool::Ref< Digit > m_digit;

    // Performs the data update
    void updateValues();
  };

}

#endif