[1337] | 1 | """ |
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| 2 | Python module |
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| 3 | |
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| 4 | This module provides classes and functions for scoring reactions |
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| 5 | |
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| 6 | [C] MCVertex: |
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| 7 | [C] MCParticle: |
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| 8 | [f] read_next_vertex(stream): |
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| 9 | |
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| 10 | Q, 2006 |
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| 11 | """ |
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| 12 | import string |
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| 13 | from Geant4.hepunit import * |
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| 14 | |
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| 15 | # ================================================================== |
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| 16 | # public symbols |
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| 17 | # ================================================================== |
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| 18 | __all__ = [ 'MCParticle', 'MCVertex', 'read_next_vertex' ] |
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| 19 | |
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| 20 | |
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| 21 | # ================================================================== |
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| 22 | # class definition |
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| 23 | # ================================================================== |
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| 24 | |
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| 25 | # ------------------------------------------------------------------ |
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| 26 | # MCParticle |
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| 27 | # ------------------------------------------------------------------ |
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| 28 | class MCParticle: |
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| 29 | "MC particle" |
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| 30 | def __init__(self, aname, aZ, aA, akE, apx, apy, apz): |
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| 31 | self.name = aname |
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| 32 | self.Z = aZ |
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| 33 | self.A = aA |
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| 34 | self.kineticE = akE |
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| 35 | self.px = apx |
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| 36 | self.py = apy |
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| 37 | self.pz = apz |
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| 38 | |
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| 39 | def printout(self): |
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| 40 | print "--- particle: %s, Z=%2d, A=%2d, kE=%g" % \ |
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| 41 | (self.name, self.Z, self.A, self.kineticE/MeV) |
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| 42 | |
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| 43 | # ------------------------------------------------------------------ |
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| 44 | # MCVertex |
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| 45 | # ------------------------------------------------------------------ |
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| 46 | class MCVertex : |
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| 47 | "MC vertex" |
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| 48 | def __init__(self, ax, ay, az): |
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| 49 | self.x = ax |
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| 50 | self.y = ay |
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| 51 | self.z = az |
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| 52 | self.nparticle = 0 |
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| 53 | self.particle_list = [] |
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| 54 | |
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| 55 | def append_particle(self, aparticle): |
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| 56 | self.particle_list.append(aparticle) |
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| 57 | self.nparticle= self.nparticle+1 |
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| 58 | |
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| 59 | def printout(self): |
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| 60 | print "@@@ vertex: x=(%g,%g,%g) Nsec=%3d" % \ |
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| 61 | (self.x/cm, self.y/cm, self.z/cm, self.nparticle) |
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| 62 | for p in self.particle_list: |
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| 63 | p.printout() |
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| 64 | |
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| 65 | def dump_vertex(self, stream): |
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| 66 | aline = "%g %g %g %d\n" % \ |
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| 67 | (self.x/m, self.y/m, self.z/m, self.nparticle) |
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| 68 | stream.write(aline) |
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| 69 | for p in self.particle_list: |
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| 70 | aline = " %s %d %d %g %g %g %g\n" % \ |
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| 71 | (p.name, p.Z, p.A, p.kineticE/MeV, p.px/MeV, p.py/MeV, p.pz/MeV) |
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| 72 | stream.write(aline) |
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| 73 | |
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| 74 | def __del__(self): |
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| 75 | np = len(self.particle_list) |
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| 76 | del self.particle_list[0:np] |
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| 77 | |
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| 78 | |
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| 79 | # ================================================================== |
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| 80 | # I/O interface |
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| 81 | # ================================================================== |
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| 82 | def read_next_vertex(stream): |
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| 83 | "read next vertex from a file stream" |
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| 84 | line= stream.readline() |
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| 85 | if line == "": # EOF |
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| 86 | return 0 |
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| 87 | |
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| 88 | # reading vertex |
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| 89 | data = line.split() |
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| 90 | x = string.atof(data[0]) * m |
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| 91 | y = string.atof(data[1]) * m |
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| 92 | z = string.atof(data[2]) * m |
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| 93 | nsec = string.atoi(data[3]) |
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| 94 | |
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| 95 | vertex = MCVertex(x,y,z) |
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| 96 | |
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| 97 | # reading particles |
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| 98 | for p in range(0, nsec): |
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| 99 | data = stream.readline().split() |
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| 100 | pname = data[0] |
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| 101 | Z = string.atoi(data[1]) |
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| 102 | A = string.atoi(data[2]) |
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| 103 | kE = string.atof(data[3]) * MeV |
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| 104 | px = string.atof(data[4]) * MeV |
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| 105 | py = string.atof(data[5]) * MeV |
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| 106 | pz = string.atof(data[6]) * MeV |
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| 107 | |
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| 108 | particle = MCParticle(pname, Z, A, kE, px, py, pz) |
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| 109 | vertex.append_particle(particle) |
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| 110 | |
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| 111 | return vertex |
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| 112 | |
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| 113 | |
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| 114 | # ================================================================== |
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| 115 | # test |
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| 116 | # ================================================================== |
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| 117 | def test(): |
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| 118 | f = open("reaction.dat") |
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| 119 | f.seek(0) |
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| 120 | |
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| 121 | while(1): |
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| 122 | vertex = read_next_vertex(f) |
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| 123 | if vertex == 0: |
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| 124 | break |
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| 125 | vertex.printout() |
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| 126 | del vertex |
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| 127 | f.close() |
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| 128 | print ">>> EOF" |
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| 129 | |
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| 130 | |
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| 131 | # ================================================================== |
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| 132 | # main |
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| 133 | # ================================================================== |
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| 134 | if __name__ == "__main__": |
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| 135 | test() |
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| 136 | |
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