Import Geant4 5.0.0 source tree

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+//
+// ********************************************************************
+// * DISCLAIMER                                                       *
+// *                                                                  *
+// * The following disclaimer summarizes all the specific disclaimers *
+// * of contributors to this software. The specific disclaimers,which *
+// * govern, are listed with their locations in:                      *
+// *   http://cern.ch/geant4/license                                  *
+// *                                                                  *
+// * Neither the authors of this software system, nor their employing *
+// * institutes,nor the agencies providing financial support for this *
+// * work  make  any representation or  warranty, express or implied, *
+// * regarding  this  software system or assume any liability for its *
+// * use.                                                             *
+// *                                                                  *
+// * This  code  implementation is the  intellectual property  of the *
+// * GEANT4 collaboration.                                            *
+// * By copying,  distributing  or modifying the Program (or any work *
+// * based  on  the Program)  you indicate  your  acceptance of  this *
+// * statement, and all its terms.                                    *
+// ********************************************************************
+//
+//
+// $Id: G4VScatteringCollision.hh,v 1.3 2002/12/12 19:17:43 gunter Exp $ //
+// -------------------------------------------------------------------
+//      GEANT4 Class file
+//
+//      For information related to this code contact:
+//
+//      File name:     G4VElasticCollision
+//
+//      Author:        Maria Grazia Pia
+// 
+//      Creation date: 15 April 1999
+//
+//      Modifications: 
+//      
+// -------------------------------------------------------------------
+
+#ifndef G4VSCATTERINGCOLLISION_HH
+#define G4VSCATTERINGCOLLISION_HH
+
+#include "globals.hh"
+#include "G4VCollision.hh"
+#include "G4VCrossSectionSource.hh"
+#include "G4VAngularDistribution.hh"
+#include "G4KineticTrackVector.hh"
+
+class G4KineticTrack;
+
+
+class G4VScatteringCollision : public G4VCollision
+{
+
+public:
+
+  G4VScatteringCollision();
+
+  virtual ~G4VScatteringCollision();
+
+  G4bool operator==(const G4VScatteringCollision &right) const;
+  G4bool operator!=(const G4VScatteringCollision &right) const;
+
+  virtual G4KineticTrackVector* FinalState(const G4KineticTrack& trk1, 
+					      const G4KineticTrack& trk2) const;
+  virtual const G4VAngularDistribution* GetAngularDistribution() const
+  {
+    return theAngularDistribution;
+  }
+
+protected:
+
+  virtual const G4std::vector<const G4ParticleDefinition*> & GetOutgoingParticles() const = 0;
+
+private:  
+
+  double BrWigInt0(const double x, const double gamma, const double m0) const
+    { return 2.0*gamma*atan( 2.0 * (x-m0)/ gamma  ); }
+
+  G4double BrWigInt1(const G4double x, const G4double gamma, const G4double m0) const
+    { return 0.5*gamma*gamma*log( (x-m0)*(x-m0)+gamma*gamma/4.0 ) + m0*BrWigInt0(x,gamma,m0); }
+
+  double BrWigInv(const double x, const double gamma, const double m0) const
+    { return 0.5*gamma*tan( 0.5*x/gamma )+m0; }
+  
+  double SampleResonanceMass(const double poleMass, 
+			     const double width,
+			     const double minMass,
+			     const double maxMass) const;
+private:
+
+ G4VAngularDistribution * theAngularDistribution;
+
+};    
+
+
+
+
+#endif