Gabriele Cosmo
34 lines
1.3 KiB
Plaintext
34 lines
1.3 KiB
Plaintext
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Geant4 - an Object-Oriented Toolkit for Simulation in HEP
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examples/extended/visualization/userVisAction
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This example illustrates how to create a "vis action".
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The idea is that you register a vis action with the vis manager and
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activate it by a command /vis/scene/add/userAction. In this case, it
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draws a simple logo.
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1) UVA_VisAction.cc defines a G4VUserVisAction and implements a Draw
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method.
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2) In the main program, UVA_VisAction is instantiated and
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its pointer registerd with the visualization manager. You may
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optionally specify an extent at this point to assist the viewers to
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locate the objects.
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3) To visualise, use the usual Geant4 vis commands to create a view
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and scene, then add the vis action to the scene with
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/vis/scene/add/userAction - see vis.mac.
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Note: The system needs an "extent" in order to point the virtual
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camera and adjust its field of view, etc. This defines the "standard
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view". You may zoom, etc., from this standard view. The extent may
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be specified as suggested above or by using /vis/scene/add/extent.
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John Allison
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27th November 2014
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