Gabriele Cosmo
33 lines
1.1 KiB
Plaintext
33 lines
1.1 KiB
Plaintext
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This example demonstrates integration of the navigation elements of
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[VecGeom](https://gitlab.cern.ch/VecGeom/VecGeom), to investigate the
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performance benefits.
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This integration is in development. Supporting Placement volumes -- other
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volumes would be handled by existing Geant4 navigation.
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The example loads a GDML file for the geometry, and can execute a batch
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file (vecgeomNav.in) or run interactive commands or both.
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# Installation / Configuration
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## Dependencies
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In addition to Geant4, two projects: are required VecGeom and G4VecGeomNav.
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VecCore is also required, but can be found through VecGeom.
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It is optionally possible to use Root in G4VecGeomNav to store voxel
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information for safety computation. These can require significant computation
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to calculate if at least one logical volume contains many daughter volume.
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## Configuration
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- To configure you must set:
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setenv CMAKE_PREFIX_PATH "${VECCORE_DIR}:${VECGEOM_DIR}"
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or if you are using Vc from Root
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setenv CMAKE_PREFIX_PATH "${ROOTSYS}:${VECGEOM_DIR}"
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where VecGeom has also been built with the same installation of Vc from Root.
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