| Geant4 Cross Reference |
1 // 1 2 // ******************************************* 3 // * License and Disclaimer 4 // * 5 // * The Geant4 software is copyright of th 6 // * the Geant4 Collaboration. It is provided 7 // * conditions of the Geant4 Software License 8 // * LICENSE and available at http://cern.ch/ 9 // * include a list of copyright holders. 10 // * 11 // * Neither the authors of this software syst 12 // * institutes,nor the agencies providing fin 13 // * work make any representation or warran 14 // * regarding this software system or assum 15 // * use. Please see the license in the file 16 // * for the full disclaimer and the limitatio 17 // * 18 // * This code implementation is the result 19 // * technical work of the GEANT4 collaboratio 20 // * By using, copying, modifying or distri 21 // * any work based on the software) you ag 22 // * use in resulting scientific publicati 23 // * acceptance of all terms of the Geant4 Sof 24 // ******************************************* 25 // 26 // 27 // This software was developed by Lawrence Liv 28 // 29 // Redistribution and use in source and binary 30 // modification, are permitted provided that t 31 // 32 // 1. Redistributions of source code must reta 33 // this list of conditions and the following 34 // 2. Redistributions in binary form must repr 35 // this list of conditions and the following 36 // and/or other materials provided with the 37 // 3. The name of the author may not be used t 38 // derived from this software without specif 39 // 40 // THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``A 41 // WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 42 // MERCHANTABILITY AND FITNESS FOR A PARTICULA 43 // EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DI 44 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGE 45 // PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES 46 // OR BUSINESS INTERRUPTION) HOWEVER CAUSED AN 47 // WHETHER IN CONTRACT, STRICT LIABILITY, OR T 48 // OTHERWISE) ARISING IN ANY WAY OUT OF THE US 49 // ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 50 // 51 // Copyright (c) 2006 The Regents of the Unive 52 // All rights reserved. 53 // UCRL-CODE-224807 54 // 55 // 56 // 57 58 #include <cmath> 59 #include "G4fissionEvent.hh" 60 #include "G4PhysicalConstants.hh" 61 62 void G4fissionEvent::G4SmpIsoDir(G4double* cos 63 64 /* 65 Description 66 determine the 3 direction cosines of a par 67 */ 68 69 /* 70 Input 71 Output 72 - 3 components of the direction co 73 (cosdiru, cosdirv, cosdirw) 74 */ 75 76 G4double cospolang, sinpolang, phi; 77 78 // Choose emission angle isotropically, the 79 cospolang = 1.-2.*fisslibrng(); 80 sinpolang = std::sqrt(1. - cospolang*cospol 81 82 // Select an azimuthal angle uniformly on ( 83 phi = twopi*fisslibrng(); 84 *cosdiru = sinpolang * std::cos(phi); 85 *cosdirv = sinpolang * std::sin(phi); 86 *cosdirw = cospolang; 87 } 88