GeoModel2GDML¶

GeoModel2GDML (gm2gdml) is a command line tool based on Geant4, to convert geometries and dump them in gdml. The geometry is first built in GeoModel, converted in Geant4 and dumped in gdml format. The supported input geometries are : sqlite (.db), plugin (.so/dylib) and gdml. Before the dump operation the geometry is revised and the unidentified volumes are pulled out from the geometry. Run the executable with the –help option to see the available options:

./gm2gdml --help

 **** Parameters: 
-g :   [MANDATORY] input  geometry file name [.db/.gdml/.dylib/.so] 
-o :   [OPTIONAL]  output GDML geometry file name (default: geometry.gdml)

Examples¶

To run gm2gdml one has to specify with the -g flag the geometry file (mandatory option). By default a ‘geometry.gdml’ output file is created, but the name of the file can be changed using the -o option. To run gm2gdml on LArBarrel.db geometry, and dump the output gdml file in the LArBarrel.gdml file:

./gm2gdml -g LArBarrel.db -o LArBarrel.gdml

To dump your geometry described with a plugin, i.e. HGTDPlugin, and write out the geometry file in the HGTDPlugin.gdml file :

./gm2gdml -g libHGTDPlugin.1.0.0.dylib -o HGTDPlugin.gdml