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RectangularBox.h

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#ifndef _RECTANGULAR_BOX_H_
#define _RECTANGULAR_BOX_H_ 1

#include "CLHEP/Geometry/Point3D.h"
#include "CLHEP/Geometry/Normal3D.h"

using namespace std;

class RectangularBox
{
 public:

  RectangularBox(double xUp, double xLow,
                 double yUp, double yLow,
                 double zUp, double zLow);

  virtual ~RectangularBox();

  bool intersect(const HepGeom::Point3D<double> & linePoint, const HepGeom::Normal3D<double> & lineSlope,
                 HepGeom::Point3D<double> & intersectA, HepGeom::Point3D<double> & intersectB);

  double xUp()  const { return m_xUp;  }
  double xLow() const { return m_xLow; }

  double yUp()  const { return m_yUp;  }
  double yLow() const { return m_yLow; }

  double zUp()  const { return m_zUp;  }
  double zLow() const { return m_zLow; }


 private:
  /*     Conventions:
   *     x,y,z: It uses the same conventions as the other part of DayaBay geometry.
   *            x pointing to the exit of a hall.
   *     As long as three axises are perpendicular to their relevant walls, then this class will work.
   *     Make sure the muon track coordinates system is the same as that used to build this box.
   *
   *
   *     Using six planes to represent the six wall of a water pool.
   *
   *                          top
   *        x positive, y positive, x negtive, y negtive
   *                          bottom
   *
   */

  double m_xUp,m_xLow;
  double m_yUp,m_yLow;
  double m_zUp,m_zLow;

};

std::ostream & operator<<(std::ostream & os, const RectangularBox & p);

#endif // _RECTANGULAR_BOX_H_

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