Importing XML Models Using GDML

Geometry Description Markup Language (GDML) is a markup language based on XML and suited for the description of detector geometry models. It allows for easy exchange of geometry data in a human-readable XML-based description and structured formatting.

The GDML parser is a component of Geant4 which can be built and installed as an optional choice. It allows for importing and exporting GDML files, following the schema specified in the GDML documentation. The installation of the plugin is optional and requires the installation of the XercesC DOM parser.

Examples of how to import and export a detector description model based on GDML, and also how to extend the GDML schema, are provided and can be found in examples/extended/persistency/gdml.