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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