Gabriele Cosmo
43 lines
1.8 KiB
Plaintext
43 lines
1.8 KiB
Plaintext
$Id: README,v 1.10 2007/11/20 08:34:16 gcosmo Exp $
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-------------------------------------------------------------------
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=========================================================
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Geant4 - an Object-Oriented Toolkit for Simulation in HEP
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=========================================================
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GDML read/write
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---------------
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This example demonstrates the usage of the GDML reader and writer. It allows
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to export geometry descriptions in an application independent format (GDML,
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Geometry Description Markup Language).
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The GDML files can be then used to interchange geometries between different
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applications and users.
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The detector construction consists of a call to GDMLProcessor which parses a
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GDML file and returns the pointer to the world volume. The user can also write
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her/his own GDML file and use it as the primary input format for her/his Geant4
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application.
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More than one simple GDML files are provided:
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- axes.gdml, showing loading and orientation of Cartesian axes;
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- diamond.gdml, a simple diamond structure made of tessellated solids;
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- modular.gdml, the combination of the two GDML files above loaded as
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separate modules in the same setup.
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HOW TO BUILD THE EXAMPLE ?
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- You need to have built the persistency/gdml plugin module by having
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set G4LIB_BUILD_GDML variable in your environment.
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It is also required you specify the path where the XercesC XML parser
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package is installed in your system, through the variable XERCESCROOT.
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- Compile and link to generate the executable:
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% gmake
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- Execute the application:
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% load_gdml [GDML-file].gdml
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Note: if you are using dynamic libraries, you should add and
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$XERCESCROOT/lib paths to the LD_LIBRARY_PATH directory (or
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equivalent on your system).
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