Import Geant4 8.1.0 source tree

2016-06-09 14:44:26 +02:00
parent 8a51e0bc40
commit 216a75eeb1
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+//
+// ********************************************************************
+// * License and Disclaimer                                           *
+// *                                                                  *
+// * The  Geant4 software  is  copyright of the Copyright Holders  of *
+// * the Geant4 Collaboration.  It is provided  under  the terms  and *
+// * conditions of the Geant4 Software License,  included in the file *
+// * LICENSE and available at  http://cern.ch/geant4/license .  These *
+// * include a list of copyright holders.                             *
+// *                                                                  *
+// * 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.  Please see the license in the file  LICENSE  and URL above *
+// * for the full disclaimer and the limitation of liability.         *
+// *                                                                  *
+// * This  code  implementation is the result of  the  scientific and *
+// * technical work of the GEANT4 collaboration.                      *
+// * By using,  copying,  modifying or  distributing the software (or *
+// * any work based  on the software)  you  agree  to acknowledge its *
+// * use  in  resulting  scientific  publications,  and indicate your *
+// * acceptance of all terms of the Geant4 Software license.          *
+// ********************************************************************
+//
+//
+// $Id: G4RayShooter.cc,v 1.2 2006/06/29 18:10:00 gunter Exp $
+// GEANT4 tag $Name: geant4-08-01 $
+//
+
+#include "G4RayShooter.hh"
+#include "G4PrimaryParticle.hh"
+#include "G4Event.hh"
+#include "G4ParticleTable.hh"
+#include "G4ParticleDefinition.hh"
+#include "globals.hh"
+
+
+G4RayShooter::G4RayShooter()
+{
+  SetInitialValues();
+}
+
+void G4RayShooter::SetInitialValues()
+{
+  particle_definition = 0;
+  G4ThreeVector zero;
+  particle_momentum_direction = (G4ParticleMomentum)zero;
+  particle_energy = 1.0*GeV;
+  particle_position = zero;
+  particle_time = 0.0;
+  particle_polarization = zero;
+}
+
+G4RayShooter::~G4RayShooter()
+{
+}
+
+void G4RayShooter::Shoot(G4Event* evt,G4ThreeVector vtx,G4ThreeVector direc)
+{
+  if(!particle_definition)
+  {
+    G4ParticleTable* particleTable = G4ParticleTable::GetParticleTable();
+    G4String particleName;
+    particle_definition = particleTable->FindParticle(particleName="geantino");
+    if(!particle_definition)
+    {
+      G4String msg;
+      msg =  " G4RayTracer uses geantino to trace the ray, but your physics list does not\n";
+      msg += "define G4Geantino. Please add G4Geantino in your physics list.";
+      G4Exception("G4RayShooter::Shoot","RayTracer001",FatalException,msg);
+    }
+  }
+
+  // create a new vertex
+  G4PrimaryVertex* vertex = new G4PrimaryVertex(vtx,particle_time);
+
+  // create new primaries and set them to the vertex
+  G4double mass =  particle_definition->GetPDGMass();
+  G4double energy = particle_energy + mass;
+  G4double pmom = std::sqrt(energy*energy-mass*mass);
+  G4double px = pmom*direc.x();
+  G4double py = pmom*direc.y();
+  G4double pz = pmom*direc.z();
+  G4PrimaryParticle* particle =
+      new G4PrimaryParticle(particle_definition,px,py,pz);
+  particle->SetMass( mass );
+  particle->SetPolarization(particle_polarization.x(),
+                               particle_polarization.y(),
+                               particle_polarization.z());
+  vertex->SetPrimary( particle );
+
+  evt->AddPrimaryVertex( vertex );
+}
+
+