| 1 | // |
|---|
| 2 | // ******************************************************************** |
|---|
| 3 | // * License and Disclaimer * |
|---|
| 4 | // * * |
|---|
| 5 | // * The Geant4 software is copyright of the Copyright Holders of * |
|---|
| 6 | // * the Geant4 Collaboration. It is provided under the terms and * |
|---|
| 7 | // * conditions of the Geant4 Software License, included in the file * |
|---|
| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
|---|
| 9 | // * include a list of copyright holders. * |
|---|
| 10 | // * * |
|---|
| 11 | // * Neither the authors of this software system, nor their employing * |
|---|
| 12 | // * institutes,nor the agencies providing financial support for this * |
|---|
| 13 | // * work make any representation or warranty, express or implied, * |
|---|
| 14 | // * regarding this software system or assume any liability for its * |
|---|
| 15 | // * use. Please see the license in the file LICENSE and URL above * |
|---|
| 16 | // * for the full disclaimer and the limitation of liability. * |
|---|
| 17 | // * * |
|---|
| 18 | // * This code implementation is the result of the scientific and * |
|---|
| 19 | // * technical work of the GEANT4 collaboration. * |
|---|
| 20 | // * By using, copying, modifying or distributing the software (or * |
|---|
| 21 | // * any work based on the software) you agree to acknowledge its * |
|---|
| 22 | // * use in resulting scientific publications, and indicate your * |
|---|
| 23 | // * acceptance of all terms of the Geant4 Software license. * |
|---|
| 24 | // ******************************************************************** |
|---|
| 25 | // |
|---|
| 26 | // $Id: G4CascadParticle.cc,v 1.18 2010/10/20 14:34:26 mkelsey Exp $ |
|---|
| 27 | // Geant4 tag: $Name: hadr-casc-V09-03-85 $ |
|---|
| 28 | // |
|---|
| 29 | // 20100112 M. Kelsey -- Remove G4CascadeMomentum, use G4LorentzVector directly |
|---|
| 30 | // 20100114 M. Kelsey -- Replace vector<G4Double> position with G4ThreeVector |
|---|
| 31 | // 20101012 M. Kelsey -- Check for negative d2 in getPathToTheNextZone() |
|---|
| 32 | |
|---|
| 33 | #include "G4CascadParticle.hh" |
|---|
| 34 | #include "G4ios.hh" |
|---|
| 35 | #include <cmath> |
|---|
| 36 | |
|---|
| 37 | G4CascadParticle::G4CascadParticle() |
|---|
| 38 | : verboseLevel(0), current_zone(-1), current_path(-1.), movingIn(false), |
|---|
| 39 | reflectionCounter(0), reflected(false), generation(-1) { |
|---|
| 40 | if (verboseLevel > 3) { |
|---|
| 41 | G4cout << " >>> G4CascadParticle::G4CascadParticle" << G4endl; |
|---|
| 42 | } |
|---|
| 43 | } |
|---|
| 44 | |
|---|
| 45 | G4double G4CascadParticle::getPathToTheNextZone(G4double rz_in, |
|---|
| 46 | G4double rz_out) { |
|---|
| 47 | if (verboseLevel > 3) { |
|---|
| 48 | G4cout << " >>> G4CascadParticle::getPathToTheNextZone rz_in " << rz_in |
|---|
| 49 | << " rz_out " << rz_out << G4endl; |
|---|
| 50 | } |
|---|
| 51 | |
|---|
| 52 | const G4LorentzVector& mom = getMomentum(); |
|---|
| 53 | |
|---|
| 54 | G4double path = -1.0; |
|---|
| 55 | G4double rp = mom.vect().dot(position); |
|---|
| 56 | G4double rr = position.mag2(); |
|---|
| 57 | G4double pp = mom.vect().mag2(); |
|---|
| 58 | |
|---|
| 59 | G4double ra = rr - rp * rp / pp; |
|---|
| 60 | pp = std::sqrt(pp); |
|---|
| 61 | G4double ds; |
|---|
| 62 | G4double d2; |
|---|
| 63 | |
|---|
| 64 | if (verboseLevel > 3) { |
|---|
| 65 | G4cout << " current_zone " << current_zone << " rr " << rr |
|---|
| 66 | << " rp " << rp << " pp " << pp << " ra " << ra << G4endl; |
|---|
| 67 | } |
|---|
| 68 | |
|---|
| 69 | if (current_zone == 0 || rp > 0.0) { |
|---|
| 70 | d2 = rz_out * rz_out - ra; |
|---|
| 71 | if (d2 > 0.0) { |
|---|
| 72 | ds = 1.0; |
|---|
| 73 | movingIn = false; |
|---|
| 74 | } else { |
|---|
| 75 | d2 = rz_in * rz_in - ra; |
|---|
| 76 | ds = -1.0; |
|---|
| 77 | movingIn = true; |
|---|
| 78 | } |
|---|
| 79 | } else { |
|---|
| 80 | d2 = rz_in * rz_in - ra; |
|---|
| 81 | if (d2 > 0.0) { |
|---|
| 82 | ds = -1.0; |
|---|
| 83 | movingIn = true; |
|---|
| 84 | } else { |
|---|
| 85 | d2 = rz_out * rz_out - ra; |
|---|
| 86 | ds = 1.0; |
|---|
| 87 | movingIn = false; |
|---|
| 88 | } |
|---|
| 89 | } |
|---|
| 90 | |
|---|
| 91 | if (verboseLevel > 3) G4cout << " ds " << ds << " d2 " << d2 << G4endl; |
|---|
| 92 | |
|---|
| 93 | path = ds * std::sqrt(d2) - rp / pp; |
|---|
| 94 | |
|---|
| 95 | return path; |
|---|
| 96 | } |
|---|
| 97 | |
|---|
| 98 | void G4CascadParticle::propagateAlongThePath(G4double path) { |
|---|
| 99 | if (verboseLevel > 3) { |
|---|
| 100 | G4cout << " >>> G4CascadParticle::propagateAlongThePath" << G4endl; |
|---|
| 101 | } |
|---|
| 102 | |
|---|
| 103 | position += getMomentum().vect().unit()*path; |
|---|
| 104 | } |
|---|
| 105 | |
|---|
| 106 | void G4CascadParticle::print() const { |
|---|
| 107 | theParticle.printParticle(); |
|---|
| 108 | G4cout << " zone " << current_zone << " current_path " << current_path |
|---|
| 109 | << " reflectionCounter " << reflectionCounter << G4endl |
|---|
| 110 | << " x " << position.x() << " y " << position.y() |
|---|
| 111 | << " z " << position.z() << G4endl; |
|---|
| 112 | } |
|---|
| 113 | |
|---|
