| Geant4 Cross Reference |
>> 1 $Id: README 68025 2013-03-13 13:43:46Z gcosmo $
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3 Example of definition of a GDML extension wit 4 Example of definition of a GDML extension with associated reader and writer
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5 6
6 In this directory you can find an example sho 7 In this directory you can find an example showing how to extend the GDML
7 schema and plug-in a custom reader and writer 8 schema and plug-in a custom reader and writer to the system for handling
8 the extension. 9 the extension.
9 For more information, please, refer to the GD 10 For more information, please, refer to the GDML Documentation.
10 11
11 The Geometry is a Simple Box to which it is a 12 The Geometry is a Simple Box to which it is assigned a color as
12 visualization attribute. 13 visualization attribute.
13 The entity "color" is defined as part of the 14 The entity "color" is defined as part of the "extension" tag and properly
14 implemented in the GDML schema extension plac 15 implemented in the GDML schema extension placed inside the directory
15 SimpleExtensionSchema. 16 SimpleExtensionSchema.
16 The GDML file implenting the geometry with co 17 The GDML file implenting the geometry with colors extension is
17 color_extension.gdml, in which the standard " 18 color_extension.gdml, in which the standard "gdml" tag has been replaced
18 by the "gdml_simple_extension" tag, with rela 19 by the "gdml_simple_extension" tag, with relative location for the new schema.
19 The GDML file is automatically loaded by the 20 The GDML file is automatically loaded by the program.
20 It is also possible to use UI commands or mac 21 It is also possible to use UI commands or macros as arguments to read any
21 standard GDML file. 22 standard GDML file.
22 23
23 HOW TO BUILD THE EXAMPLE ? 24 HOW TO BUILD THE EXAMPLE ?
24 25
25 - You need to have built the persistency/gdml 26 - You need to have built the persistency/gdml module by having
26 set the -DGEANT4_USE_GDML=ON flag during th 27 set the -DGEANT4_USE_GDML=ON flag during the CMAKE configuration step,
27 as well as the -DXERCESC_ROOT_DIR=<path_to_ 28 as well as the -DXERCESC_ROOT_DIR=<path_to_xercesc> flag pointing to
28 the path where the XercesC XML parser packa 29 the path where the XercesC XML parser package is installed in your system.
29 30
30 - Compile and link to generate the executable 31 - Compile and link to generate the executable (in your CMAKE build directory):
31 % make 32 % make
32 33
33 - Execute the application for reading and vis 34 - Execute the application for reading and visualizing the setup:
34 % gdml_ext read_ext.mac 35 % gdml_ext read_ext.mac
35 36
36 - Execute the application for also writing th 37 - Execute the application for also writing the setup:
37 % gdml_ext [write_ext.mac] 38 % gdml_ext [write_ext.mac]