[904] | 1 | <!-- ******************************************************** --> |
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| 2 | <!-- --> |
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| 3 | <!-- [History] --> |
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| 4 | <!-- Converted to DocBook: Katsuya Amako, Aug-2006 --> |
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| 5 | <!-- --> |
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| 6 | <!-- ******************************************************** --> |
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| 7 | |
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| 8 | |
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| 9 | <!-- ******************* Section (Level#1) ****************** --> |
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| 10 | <sect1 id="sect.VisEnhTrj"> |
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| 11 | <title> |
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| 12 | Enhanced Trajectory Drawing |
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| 13 | </title> |
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| 14 | |
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| 15 | <!-- ******************* Section (Level#2) ****************** --> |
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| 16 | <sect2 id="sect.VisEnhTrj.DflCnfg"> |
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| 17 | <title> |
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| 18 | Default Configuration |
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| 19 | </title> |
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| 20 | |
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| 21 | <para> |
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| 22 | Trajectory drawing styles are specified through trajectory drawing |
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| 23 | models. Each drawing model has a default configuration provided |
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| 24 | through a G4VisTrajContext object. The default context settings are |
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| 25 | shown below. |
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| 26 | |
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| 27 | <informaltable> |
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| 28 | <tgroup cols="2"> |
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| 29 | <tbody> |
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| 30 | <row> |
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| 31 | <entry> |
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| 32 | <emphasis role="bold">Property</emphasis> |
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| 33 | </entry> |
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| 34 | <entry> |
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| 35 | <emphasis role="bold">Default Setting</emphasis> |
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| 36 | </entry> |
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| 37 | </row> |
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| 38 | <row> |
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| 39 | <entry> |
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| 40 | Line colour |
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| 41 | </entry> |
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| 42 | <entry> |
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| 43 | grey |
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| 44 | </entry> |
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| 45 | </row> |
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| 46 | <row> |
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| 47 | <entry> |
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| 48 | Line visibility |
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| 49 | </entry> |
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| 50 | <entry> |
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| 51 | true |
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| 52 | </entry> |
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| 53 | </row> |
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| 54 | <row> |
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| 55 | <entry> |
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| 56 | Draw line |
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| 57 | </entry> |
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| 58 | <entry> |
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| 59 | true |
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| 60 | </entry> |
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| 61 | </row> |
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| 62 | <row> |
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| 63 | <entry> |
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| 64 | Draw auxiliary points |
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| 65 | </entry> |
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| 66 | <entry> |
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| 67 | false |
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| 68 | </entry> |
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| 69 | </row> |
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| 70 | <row> |
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| 71 | <entry> |
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| 72 | Auxiliary point type |
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| 73 | </entry> |
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| 74 | <entry> |
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| 75 | squares |
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| 76 | </entry> |
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| 77 | </row> |
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| 78 | <row> |
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| 79 | <entry> |
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| 80 | Auxiliary point size |
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| 81 | </entry> |
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| 82 | <entry> |
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| 83 | 0 |
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| 84 | </entry> |
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| 85 | </row> |
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| 86 | <row> |
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| 87 | <entry> |
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| 88 | Auxiliary point fill style |
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| 89 | </entry> |
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| 90 | <entry> |
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| 91 | filled |
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| 92 | </entry> |
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| 93 | </row> |
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| 94 | <row> |
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| 95 | <entry> |
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| 96 | Auxiliary point colour |
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| 97 | </entry> |
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| 98 | <entry> |
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| 99 | magenta |
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| 100 | </entry> |
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| 101 | </row> |
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| 102 | <row> |
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| 103 | <entry> |
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| 104 | Auxiliary point visibility |
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| 105 | </entry> |
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| 106 | <entry> |
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| 107 | true |
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| 108 | </entry> |
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| 109 | </row> |
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| 110 | <row> |
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| 111 | <entry> |
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| 112 | Draw step point |
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| 113 | </entry> |
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| 114 | <entry> |
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| 115 | false |
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| 116 | </entry> |
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| 117 | </row> |
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| 118 | <row> |
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| 119 | <entry> |
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| 120 | Step point type |
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| 121 | </entry> |
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| 122 | <entry> |
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| 123 | circles |
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| 124 | </entry> |
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| 125 | </row> |
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| 126 | <row> |
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| 127 | <entry> |
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| 128 | Step point size |
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| 129 | </entry> |
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| 130 | <entry> |
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| 131 | 0 |
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| 132 | </entry> |
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| 133 | </row> |
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| 134 | <row> |
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| 135 | <entry> |
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| 136 | Step point fill style |
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| 137 | </entry> |
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| 138 | <entry> |
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| 139 | filled |
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| 140 | </entry> |
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| 141 | </row> |
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| 142 | <row> |
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| 143 | <entry> |
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| 144 | Step point colour |
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| 145 | </entry> |
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| 146 | <entry> |
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| 147 | yellow |
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| 148 | </entry> |
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| 149 | </row> |
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| 150 | <row> |
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| 151 | <entry> |
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| 152 | Step point visibility |
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| 153 | </entry> |
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| 154 | <entry> |
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| 155 | true |
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| 156 | </entry> |
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| 157 | </row> |
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| 158 | <row> |
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| 159 | <entry> |
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| 160 | Time slice interval |
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| 161 | </entry> |
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| 162 | <entry> |
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| 163 | 0 |
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| 164 | </entry> |
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| 165 | </row> |
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| 166 | </tbody> |
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| 167 | </tgroup> |
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| 168 | </informaltable> |
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| 169 | </para> |
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| 170 | |
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| 171 | <para> |
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| 172 | Points to note: |
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| 173 | |
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| 174 | <itemizedlist spacing="compact"> |
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| 175 | <listitem><para> |
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| 176 | The context approach is intended to replace the configuration |
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| 177 | through the imode parameter. The use of imode is depreciated and |
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| 178 | will be removed in Geant4 v9.0. |
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| 179 | </para></listitem> |
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| 180 | <listitem><para> |
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| 181 | Different visualisation drivers handle trajectory configuration |
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| 182 | in different ways, so trajectories may not necessarily get |
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| 183 | displayed as you have configured them. |
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| 184 | </para></listitem> |
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| 185 | </itemizedlist> |
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| 186 | </para> |
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| 187 | |
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| 188 | </sect2> |
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| 189 | |
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| 190 | |
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| 191 | <!-- ******************* Section (Level#2) ****************** --> |
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| 192 | <sect2 id="sect.VisEnhTrj.DrdMdl"> |
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| 193 | <title> |
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| 194 | Trajectory Drawing Models |
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| 195 | </title> |
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| 196 | |
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| 197 | <para> |
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| 198 | A trajectory drawing model can override the default context |
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| 199 | according to the properties of a given trajectory. The following |
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| 200 | models are supplied with the Geant4 distribution: |
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| 201 | |
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| 202 | <itemizedlist spacing="compact"> |
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| 203 | <listitem><para> |
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| 204 | G4TrajectoryGenericDrawer (generic) |
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| 205 | </para></listitem> |
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| 206 | <listitem><para> |
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| 207 | G4TrajectoryDrawByCharge (drawByCharge) |
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| 208 | </para></listitem> |
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| 209 | <listitem><para> |
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| 210 | G4TrajectoryDrawByParticleID (drawByParticleID) |
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| 211 | </para></listitem> |
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| 212 | <listitem><para> |
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| 213 | G4TrajectoryDrawByOriginVolume (drawByOriginVolume) |
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| 214 | </para></listitem> |
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| 215 | <listitem><para> |
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| 216 | G4TrajectoryDrawByAttribute (drawByAttribute) |
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| 217 | </para></listitem> |
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| 218 | </itemizedlist> |
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| 219 | </para> |
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| 220 | |
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| 221 | <para> |
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| 222 | Both the context and model properties can be configured by the |
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| 223 | user. The models are described briefly below, followed by some |
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| 224 | example configuration commands. |
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| 225 | </para> |
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| 226 | |
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| 227 | <!-- ******* Bridgehead ******* --> |
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| 228 | <bridgehead renderas='sect4'> |
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| 229 | G4TrajectoryGenericDrawer |
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| 230 | </bridgehead> |
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| 231 | |
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| 232 | <para> |
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| 233 | This model simply draws all trajectories in the same style, with |
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| 234 | the properties provided by the context. |
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| 235 | </para> |
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| 236 | |
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| 237 | <!-- ******* Bridgehead ******* --> |
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| 238 | <bridgehead renderas='sect4'> |
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| 239 | G4TrajectoryDrawByCharge |
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| 240 | </bridgehead> |
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| 241 | |
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| 242 | <para> |
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| 243 | This is the default model - if no model is specified by the user, |
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| 244 | this model will be constructed automatically. The trajectory lines |
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| 245 | are coloured according to charge, with all other configuration |
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| 246 | parameters provided by the default context. The default colouring |
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| 247 | scheme is shown below. |
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| 248 | |
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| 249 | <informalexample> |
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| 250 | <programlisting> |
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| 251 | Charge Colour |
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| 252 | ---------------------- |
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| 253 | 1 Blue |
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| 254 | -1 Red |
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| 255 | 0 Green |
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| 256 | </programlisting> |
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| 257 | </informalexample> |
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| 258 | </para> |
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| 259 | |
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| 260 | <!-- ******* Bridgehead ******* --> |
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| 261 | <bridgehead renderas='sect4'> |
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| 262 | G4TrajectoryDrawByParticleID |
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| 263 | </bridgehead> |
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| 264 | |
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| 265 | <para> |
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| 266 | This model colours trajectory lines according to particle type. All |
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| 267 | other configuration parameters are provided by the default context. |
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| 268 | By default, all trajectories are coloured grey. Chosen particle |
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| 269 | types can be highlighted with specified colours. |
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| 270 | </para> |
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| 271 | |
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| 272 | <!-- ******* Bridgehead ******* --> |
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| 273 | <bridgehead renderas='sect4'> |
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| 274 | G4TrajectoryDrawByOriginVolume |
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| 275 | </bridgehead> |
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| 276 | |
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| 277 | <para> |
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| 278 | This model colours trajectory lines according to the trajectories |
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| 279 | originating volume name. The volume can be either a logical or |
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| 280 | physical volume. Physical volume takes precedence over logical |
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| 281 | volume. All trajectories are coloured grey by default. |
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| 282 | </para> |
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| 283 | |
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| 284 | <!-- ******* Bridgehead ******* --> |
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| 285 | <bridgehead renderas='sect4'> |
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| 286 | G4TrajectoryDrawByAttribute |
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| 287 | </bridgehead> |
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| 288 | |
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| 289 | <para> |
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| 290 | This model draws trajectories based on the HepRep style attributes |
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| 291 | associated with trajectories. Each attribute drawer can be configured |
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| 292 | with interval and/or single value data. A new context object is |
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| 293 | created for each interval/single value. This makes it possible to |
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| 294 | have different step point markers etc, as well as line colour for |
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| 295 | trajectory attributes falling into different intervals, or matching |
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| 296 | single values. The single value data should override the interval data, |
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| 297 | allowing specific values to be highlighted. Units should be specified |
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| 298 | on the command line if the attribute unit is specified either as a |
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| 299 | G4BestUnit or if the unit is part of the value string. |
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| 300 | </para> |
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| 301 | |
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| 302 | </sect2> |
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| 303 | |
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| 304 | |
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| 305 | <!-- ******************* Section (Level#2) ****************** --> |
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| 306 | <sect2 id="sect.VisEnhTrj.CntlComm"> |
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| 307 | <title> |
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| 308 | Controlling from Commands |
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| 309 | </title> |
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| 310 | |
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| 311 | <para> |
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| 312 | Multiple trajectory models can be created and configured using |
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| 313 | commands in the "<literal>/vis/modeling/trajectories/</literal>" directory. |
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| 314 | It is then possible to list available models and select one to be |
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| 315 | current. |
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| 316 | </para> |
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| 317 | |
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| 318 | <para> |
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| 319 | Model configuration commands are generated dynamically when a |
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| 320 | model is instantiated. These commands apply directly to that |
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| 321 | instance. This makes it possible to have multiple instances of the |
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| 322 | drawByCharge model for example, each independently configurable |
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| 323 | through it's own set of commands. |
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| 324 | </para> |
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| 325 | |
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| 326 | <para> |
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| 327 | See the interactive help for more information on the available |
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| 328 | commands. |
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| 329 | </para> |
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| 330 | |
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| 331 | <!-- ******************* Section (Level#3) ****************** --> |
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| 332 | <sect3 id="sect.VisEnhTrj.CntlComm.ExpComm"> |
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| 333 | <title> |
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| 334 | Example commands |
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| 335 | </title> |
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| 336 | |
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| 337 | <para> |
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| 338 | #Create a generic model named generic-0 by default |
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| 339 | |
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| 340 | <informalexample> |
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| 341 | <programlisting> |
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| 342 | /vis/modeling/trajectories/create/generic |
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| 343 | </programlisting> |
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| 344 | </informalexample> |
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| 345 | </para> |
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| 346 | |
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| 347 | <para> |
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| 348 | #Configure context to colour all trajectories red |
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| 349 | |
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| 350 | <informalexample> |
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| 351 | <programlisting> |
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| 352 | /vis/modeling/trajectories/generic-0/default/setLineColour red |
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| 353 | </programlisting> |
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| 354 | </informalexample> |
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| 355 | </para> |
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| 356 | |
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| 357 | <para> |
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| 358 | #Create a drawByCharge model named drawCharge-0 by default |
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| 359 | (Subsequent models will be named drawByCharge-1, drawByCharge-2, |
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| 360 | etc.) |
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| 361 | |
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| 362 | <informalexample> |
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| 363 | <programlisting> |
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| 364 | /vis/modeling/trajectories/create/drawByCharge |
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| 365 | </programlisting> |
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| 366 | </informalexample> |
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| 367 | </para> |
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| 368 | |
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| 369 | <para> |
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| 370 | #Create a drawByCharge model named testChargeModel |
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| 371 | |
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| 372 | <informalexample> |
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| 373 | <programlisting> |
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| 374 | /vis/modeling/trajectories/create/drawByCharge testChargeModel |
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| 375 | </programlisting> |
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| 376 | </informalexample> |
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| 377 | </para> |
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| 378 | |
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| 379 | <para> |
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| 380 | #Configure drawByCharge-0 model |
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| 381 | |
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| 382 | <informalexample> |
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| 383 | <programlisting> |
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| 384 | /vis/modeling/trajectories/drawByCharge-0/set 1 red |
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| 385 | /vis/modeling/trajectories/drawByCharge-0/set -1 red |
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| 386 | /vis/modeling/trajectories/drawByCharge-0/set 0 white |
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| 387 | </programlisting> |
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| 388 | </informalexample> |
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| 389 | </para> |
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| 390 | |
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| 391 | <para> |
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| 392 | #Configure testCharge model through G4Colour components |
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| 393 | |
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| 394 | <informalexample> |
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| 395 | <programlisting> |
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| 396 | /vis/modeling/trajectories/testChargeModel/setRGBA 1 0 1 1 1 |
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| 397 | /vis/modeling/trajectories/testChargeModel/setRGBA -1 0.5 0.5 0.5 1 |
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| 398 | /vis/modeling/trajectories/testChargeModel/setRGBA 0 1 1 0 1 |
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| 399 | </programlisting> |
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| 400 | </informalexample> |
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| 401 | </para> |
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| 402 | |
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| 403 | <para> |
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| 404 | #Create a drawByParticleID model named drawByParticleID-0 |
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| 405 | |
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| 406 | <informalexample> |
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| 407 | <programlisting> |
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| 408 | /vis/modeling/trajectories/create/drawByParticleID |
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| 409 | </programlisting> |
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| 410 | </informalexample> |
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| 411 | </para> |
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| 412 | |
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| 413 | <para> |
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| 414 | #Configure drawByParticleID-0 model |
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| 415 | |
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| 416 | <informalexample> |
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| 417 | <programlisting> |
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| 418 | /vis/modeling/trajectories/drawByParticleID-0/set gamma red |
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| 419 | /vis/modeling/trajectories/drawByParticleID-0/setRGBA e+ 1 0 1 1 |
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| 420 | </programlisting> |
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| 421 | </informalexample> |
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| 422 | </para> |
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| 423 | |
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| 424 | <para> |
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| 425 | #List available models |
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| 426 | |
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| 427 | <informalexample> |
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| 428 | <programlisting> |
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| 429 | /vis/modeling/trajectories/list |
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| 430 | </programlisting> |
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| 431 | </informalexample> |
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| 432 | </para> |
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| 433 | |
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| 434 | <para> |
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| 435 | #select drawByParticleID-0 to be current |
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| 436 | |
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| 437 | <informalexample> |
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| 438 | <programlisting> |
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| 439 | /vis/modeling/trajectories/select drawByParticleID-0 |
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| 440 | </programlisting> |
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| 441 | </informalexample> |
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| 442 | </para> |
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| 443 | |
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| 444 | <para> |
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| 445 | #Create a drawByAttribute model named drawByAttribute-0 |
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| 446 | |
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| 447 | <informalexample> |
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| 448 | <programlisting> |
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| 449 | /vis/modeling/trajectories/create/drawByAttribute |
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| 450 | </programlisting> |
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| 451 | </informalexample> |
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| 452 | </para> |
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| 453 | |
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| 454 | <para> |
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| 455 | #Configure drawByAttribute-0 model |
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| 456 | |
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| 457 | <informalexample> |
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| 458 | <programlisting> |
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| 459 | /vis/modeling/trajectories/drawByAttribute-0/verbose true |
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| 460 | </programlisting> |
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| 461 | </informalexample> |
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| 462 | </para> |
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| 463 | |
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| 464 | <para> |
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| 465 | #Select attribute "CPN" |
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| 466 | |
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| 467 | <informalexample> |
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| 468 | <programlisting> |
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| 469 | /vis/modeling/trajectories/drawByAttribute-0/setAttribute CPN |
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| 470 | </programlisting> |
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| 471 | </informalexample> |
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| 472 | </para> |
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| 473 | |
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| 474 | <para> |
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| 475 | #Configure single value data |
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| 476 | |
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| 477 | <informalexample> |
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| 478 | <programlisting> |
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| 479 | /vis/modeling/trajectories/drawByAttribute-0/addValue brem_key eBrem |
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| 480 | /vis/modeling/trajectories/drawByAttribute-0/addValue annihil_key annihil |
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| 481 | /vis/modeling/trajectories/drawByAttribute-0/addValue decay_key Decay |
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| 482 | /vis/modeling/trajectories/drawByAttribute-0/addValue muIon_key muIoni |
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| 483 | /vis/modeling/trajectories/drawByAttribute-0/addValue eIon_key eIoni |
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| 484 | |
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| 485 | /vis/modeling/trajectories/drawByAttribute-0/brem_key/setLineColour red |
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| 486 | /vis/modeling/trajectories/drawByAttribute-0/annihil_key/setLineColour green |
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| 487 | /vis/modeling/trajectories/drawByAttribute-0/decay_key/setLineColour cyan |
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| 488 | /vis/modeling/trajectories/drawByAttribute-0/eIon_key/setLineColour yellow |
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| 489 | /vis/modeling/trajectories/drawByAttribute-0/muIon_key/setLineColour magenta |
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| 490 | </programlisting> |
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| 491 | </informalexample> |
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| 492 | </para> |
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| 493 | |
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| 494 | <para> |
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| 495 | #Create a drawByAttribute model named drawByAttribute-1 |
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| 496 | |
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| 497 | <informalexample> |
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| 498 | <programlisting> |
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| 499 | /vis/modeling/trajectories/create/drawByAttribute |
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| 500 | </programlisting> |
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| 501 | </informalexample> |
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| 502 | </para> |
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| 503 | |
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| 504 | <para> |
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| 505 | #Select "IMag" attribute |
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| 506 | |
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| 507 | <informalexample> |
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| 508 | <programlisting> |
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| 509 | /vis/modeling/trajectories/drawByAttribute-1/setAttribute IMag |
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| 510 | </programlisting> |
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| 511 | </informalexample> |
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| 512 | </para> |
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| 513 | |
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| 514 | <para> |
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| 515 | #Configure interval data |
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| 516 | |
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| 517 | <informalexample> |
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| 518 | <programlisting> |
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| 519 | /vis/modeling/trajectories/drawByAttribute-1/addInterval interval1 0.0 keV 2.5MeV |
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| 520 | /vis/modeling/trajectories/drawByAttribute-1/addInterval interval2 2.5 MeV 5 MeV |
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| 521 | /vis/modeling/trajectories/drawByAttribute-1/addInterval interval3 5 MeV 7.5 MeV |
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| 522 | /vis/modeling/trajectories/drawByAttribute-1/addInterval interval4 7.5 MeV 10 MeV |
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| 523 | /vis/modeling/trajectories/drawByAttribute-1/addInterval interval5 10 MeV 12.5 MeV |
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| 524 | /vis/modeling/trajectories/drawByAttribute-1/addInterval interval6 12.5 MeV 10000 MeV |
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| 525 | |
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| 526 | /vis/modeling/trajectories/drawByAttribute-1/interval1/setLineColourRGBA 0.8 0 0.8 1 |
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| 527 | /vis/modeling/trajectories/drawByAttribute-1/interval2/setLineColourRGBA 0.23 0.41 1 1 |
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| 528 | /vis/modeling/trajectories/drawByAttribute-1/interval3/setLineColourRGBA 0 1 0 1 |
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| 529 | /vis/modeling/trajectories/drawByAttribute-1/interval4/setLineColourRGBA 1 1 0 1 |
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| 530 | /vis/modeling/trajectories/drawByAttribute-1/interval5/setLineColourRGBA 1 0.3 0 1 |
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| 531 | /vis/modeling/trajectories/drawByAttribute-1/interval6/setLineColourRGBA 1 0 0 1 |
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| 532 | </programlisting> |
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| 533 | </informalexample> |
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| 534 | </para> |
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| 535 | |
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| 536 | </sect3> |
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| 537 | </sect2> |
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| 538 | |
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| 539 | |
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| 540 | <!-- ******************* Section (Level#2) ****************** --> |
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| 541 | <sect2 id="sect.VisEnhTrj.CntlCmpl"> |
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| 542 | <title> |
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| 543 | Controlling from Compiled Code |
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| 544 | </title> |
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| 545 | |
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| 546 | <para> |
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| 547 | It is possible to use the enhanced trajectory drawing functionality |
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| 548 | in compiled code as well as from commands. Multiple trajectory |
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| 549 | models can be instantiated, configured and registered with |
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| 550 | G4VisManager. Only one model may be current. For example: |
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| 551 | |
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| 552 | <informalexample> |
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| 553 | <programlisting> |
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| 554 | G4VisManager* visManager = new G4VisExecutive; |
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| 555 | visManager->Initialize(); |
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| 556 | |
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| 557 | G4TrajectoryDrawByParticleID* model = new G4TrajectoryDrawByParticleID; |
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| 558 | G4TrajectoryDrawByParticleID* model2 = new G4TrajectoryDrawByParticleID("test"); |
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| 559 | |
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| 560 | model->SetDefault("cyan"); |
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| 561 | model->Set("gamma", "green"); |
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| 562 | model->Set("e+", "magenta"); |
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| 563 | model->Set("e-", G4Colour(0.3, 0.3, 0.3)); |
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| 564 | |
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| 565 | visManager->RegisterModel(model); |
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| 566 | visManager->RegisterModel(model2); |
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| 567 | |
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| 568 | visManager->SelectTrajectoryModel(model->Name()); |
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| 569 | </programlisting> |
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| 570 | </informalexample> |
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| 571 | </para> |
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| 572 | |
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| 573 | </sect2> |
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| 574 | |
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| 575 | |
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| 576 | <!-- ******************* Section (Level#2) ****************** --> |
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| 577 | <sect2 id="sect.VisEnhTrj.DrwByTime"> |
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| 578 | <title> |
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| 579 | Drawing by time |
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| 580 | </title> |
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| 581 | |
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| 582 | <para> |
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| 583 | To draw by time, you need to use a trajectory that records the |
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| 584 | track time at the beginning and end of each step. To do this, write |
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| 585 | a tracking action that sets G4RichTrajectory, for example: |
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| 586 | |
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| 587 | <informalexample> |
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| 588 | <programlisting> |
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| 589 | #include "G4UserTrackingAction.hh" |
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| 590 | class G4Track; |
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| 591 | class MyTrackingAction : public G4UserTrackingAction |
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| 592 | { |
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| 593 | public: |
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| 594 | virtual void PreUserTrackingAction(const G4Track* aTrack); |
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| 595 | }; |
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| 596 | #include "G4RichTrajectory.hh" |
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| 597 | #include "G4TrackingManager.hh" |
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| 598 | #include "G4IdentityTrajectoryFilter.hh" |
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| 599 | #include "G4TransportationManager.hh" |
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| 600 | #include "G4PropagatorInField.hh" |
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| 601 | void MyTrackingAction::PreUserTrackingAction(const G4Track* aTrack) |
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| 602 | { |
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| 603 | // Require rich trajectory... |
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| 604 | fpTrackingManager->SetTrajectory(new G4RichTrajectory(aTrack)); |
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| 605 | |
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| 606 | // Activate storing of auxiliary points for smoother trajectory... |
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| 607 | static G4IdentityTrajectoryFilter curvedFilter; |
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| 608 | G4TransportationManager::GetTransportationManager()-> |
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| 609 | GetPropagatorInField()->SetTrajectoryFilter(&curvedFilter); |
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| 610 | } |
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| 611 | </programlisting> |
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| 612 | </informalexample> |
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| 613 | |
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| 614 | and register an instance of this with the run manager (this can be |
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| 615 | done once and for all as soon as the run manager is instantiated, |
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| 616 | probably in your main program): |
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| 617 | |
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| 618 | <informalexample> |
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| 619 | <programlisting> |
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| 620 | #include "MyTrackingAction.hh" |
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| 621 | ... |
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| 622 | runManager -> SetUserAction (new MyTrackingAction); |
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| 623 | </programlisting> |
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| 624 | </informalexample> |
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| 625 | </para> |
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| 626 | |
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| 627 | <para> |
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| 628 | When you run, you need to create a trajectory model and set the |
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| 629 | time slice interval (remembering that paticles are often |
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| 630 | relativistic and travel 30 cm/ns): |
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| 631 | |
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| 632 | <informalexample> |
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| 633 | <programlisting> |
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| 634 | /vis/modeling/trajectories/create/drawByCharge |
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| 635 | /vis/modeling/trajectories/drawByCharge-0/default/setDrawStepPts true |
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| 636 | /vis/modeling/trajectories/drawByCharge-0/default/setStepPtsSize 5 |
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| 637 | /vis/modeling/trajectories/drawByCharge-0/default/setDrawAuxPts true |
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| 638 | /vis/modeling/trajectories/drawByCharge-0/default/setAuxPtsSize 5 |
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| 639 | /vis/modeling/trajectories/drawByCharge-0/default/setTimeSliceInterval 0.1 ns |
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| 640 | /vis/modeling/trajectories/list |
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| 641 | </programlisting> |
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| 642 | </informalexample> |
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| 643 | |
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| 644 | and use a graphics driver that can display by time: |
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| 645 | |
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| 646 | <informalexample> |
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| 647 | <programlisting> |
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| 648 | /vis/open OGLSX |
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| 649 | /vis/drawVolume |
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| 650 | /vis/scene/add/trajectories |
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| 651 | /vis/ogl/set/startTime 0.5 ns |
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| 652 | /vis/ogl/set/endTime 0.8 ns |
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| 653 | /run/beamOn |
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| 654 | /vis/viewer/refresh |
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| 655 | </programlisting> |
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| 656 | </informalexample> |
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| 657 | </para> |
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| 658 | |
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| 659 | <para> |
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| 660 | A good way to see the particles moving through the detector is: |
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| 661 | |
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| 662 | <informalexample> |
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| 663 | <programlisting> |
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| 664 | /vis/ogl/set/fade 1 |
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| 665 | /vis/ogl/set/displayHeadTime true |
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| 666 | /control/alias timeRange 1 |
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| 667 | /control/loop movie.loop -{timeRange} 40 0.1 |
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| 668 | </programlisting> |
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| 669 | </informalexample> |
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| 670 | |
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| 671 | where <literal>fade</literal> gives a vapour-trail effect, |
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| 672 | <literal>displayHeadTime</literal> displays the time of the leading edge as |
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| 673 | 2D text, and <literal>movie.loop</literal> is a macro file: |
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| 674 | |
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| 675 | <informalexample> |
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| 676 | <programlisting> |
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| 677 | /vis/ogl/set/startTime {startTime} ns {timeRange} ns |
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| 678 | </programlisting> |
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| 679 | </informalexample> |
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| 680 | </para> |
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| 681 | |
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| 682 | <para> |
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| 683 | From there, it's straightforward to <xref linkend="sect.MkMovie" /> |
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| 684 | make a movie. |
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| 685 | </para> |
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| 686 | |
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| 687 | |
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| 688 | </sect2> |
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| 689 | </sect1> |
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| 690 | |
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