/* University College London Dept of Physics Course in C++ 3C59 
| all rights reserved 2000
|
| Utility: The Rod class
|
|   This class simulates the combination of the radioactive sourse and the
|   scattering rod.
|
|   Its main function is to provide Photons on demand with an angular
|   distribution corresponding to that of the real scattered photons
|   in the experiment
|
| Author: P.Clarke 
*/
#ifndef __rod_h__
#define __rod_h__ 1

// Random angle generator class sold by Petes Enterprises inc.
#include "RanCom.h"
#include "Photon.h"

class Rod {

private:

  float m_sourceEnergy ;  // energy of photons from the radioactive source
  float m_electronMass ;  // Electron mass in kev

  RanCom angleGenerator;  // Object which gives a random angle with correct distribution

  // Private methods to help out
  // This one calculates the energy corresponding to the scattering angle
  float calculateEnergy( float angle ) ;


public:

  // Constructor.
  Rod( float sourceEnergy, float electronMass ) ;
 
  // Main method to return a new photon to the client with an angle and energy
  // corresponding to the true compton scattering distribution
  Photon generatePhoton() ;

};

#endif