Geant4 User's Guide for Application Developers - Geant4 - CERN

Visualization• ArgumentA logical-volume name.• ActionCreates a scene consisting of the given logical volume and asks the current viewer to draw it. The scene becomescurrent.• Example (visualization of a selected logical volume with coordinate axes)Idle> /vis/specify AbsorberIdle> /vis/scene/add/axes 0 0 0 500 mmIdle> /vis/scene/add/text 0 0 0 mm 40 -100 -200 LogVol:AbsorberIdle> /vis/viewer/flushFor more options, see the Control...UICommands section of this user guide.8.4.6. Visualization of trajectories: /vis/scene/add/trajectoriescommandCommand "/vis/scene/add/trajectories [smooth] [rich]" adds trajectories to the currentscene. The optional parameters "smooth" and/or "rich" (you may specify either, both or neither) invoke, if "smooth"is specified, the storing and displaying of extra points on curved trajectories and, if "rich" is specified, the storing,for possible subsequent selection and display, of additional information, such as volume names, creator process,energy deposited, global time. Be aware, of course, that this imposes computational and memory overheads. Notethat this automatically issues the appropriate "/tracking/storeTrajectory" command so that trajectoriesare stored (by default they are not). The visualization is performed with the command "/run/beamOn" unlessyou have non-default values for /vis/scene/endOfEventAction or /vis/scene/endOfRunAction (described below).Command: /vis/scene/add/trajectories [smooth] [rich]• ActionThe command adds trajectories to the current scene. Trajectories are drawn at end of event when the scene inwhich they are added is current.• Example: Visualization of trajectoriesIdle> /vis/scene/add/trajectoriesIdle> /run/beamOn 10• Additional note 1See the section Section 8.7.3 Enhanced Trajectory Drawing for details on how to control how trajectories arecolor-coded.• Additional note 2Events may be kept and reviewed at end of run withIdle> /vis/reviewKeptEventsKeep all events withIdle> /vis/scene/endOfEventAction accumulate [maxNumber](see Section 8.4.11)or keep some chosen subset with237