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// $Id: G4VErrorLimitProcess.hh,v 1.2 2007/05/29 14:41:35 gcosmo Exp $
// GEANT4 tag $Name: geant4-09-03 $
//
//
// Class description:
//
// Base class for classes limiting the step.

// History:
//
// Created:     P.Arce          May 2007
// --------------------------------------------------------------------

#ifndef G4VErrorLimitProcess_hh
#define G4VErrorLimitProcess_hh

#include "G4ios.hh" 
#include "globals.hh"
#include "G4VDiscreteProcess.hh"
#include "G4PhysicsTable.hh"
#include "G4PhysicsLogVector.hh"
#include "G4ElementTable.hh"
#include "G4Gamma.hh" 
#include "G4Electron.hh"
#include "G4Step.hh" 

class G4ErrorLimitsMessenger;

//-----------------------------------------------------------------
 
class G4VErrorLimitProcess : public G4VDiscreteProcess
{

 public:  // with description
  
  G4VErrorLimitProcess(const G4String& processName);
  
  ~G4VErrorLimitProcess();
  
  virtual G4double
  PostStepGetPhysicalInteractionLength( const G4Track& track,
                                              G4double previousStepSize,
                                              G4ForceCondition* condition ) = 0;
    // Returns the step limit

  virtual  G4double GetMeanFreePath(const class G4Track &, G4double,
                                    enum G4ForceCondition *);
    // Returns kInfinity

  virtual G4VParticleChange* PostStepDoIt(const G4Track&, const G4Step& );
    // No action but retrieving the G4VParticleChange
    // extracted from the G4Track

  // Get and Set methods

  G4double GetStepLimit() const { return theStepLimit; }
  void SetStepLimit( G4double val ) { theStepLimit = val; }

 protected:

  G4double theStepLimit;  // limit set by the user
  G4double theStepLength; // step length extracted from the user step limit,
                          // with the algorithms of each concrete class
};
  
#endif
