[Halld-offline] Fwd: r10030 - in trunk/sim-recon/src/programs/Utilities: . hd_geom_query

[Richard Jones]

Hello,

A tool for this already existed in hdgeant.  My tool allows you to click on a drawing of the detector that is cut through any arbitrary plane (origin, orientation selected with numbers or a mouse) and see the entire volume hierarchy plus the local value of the magnetic field.  Of course there is nothing wrong with having another tool that does the same thing.

-Richard J.




On 11/28/2012 4:37 PM, David Lawrence wrote:
>
> Hi All,
>
>   As I mentioned at the Offline Software meeting today, I have written a new
> utility for examining the geometry. Specifically, if one gives it an X,Y,Z coordinate
> in the lab frame, it will print the volume and material properties for the
> volume at that point. It will also list the entire volume hierarchy of that volume
> outwards to the outermost Mother volume. Here is an example querying the center
> of the target.
>
> >hd_geom_query 0 0 65
>
>    Location: (X, Y, Z) = (0, 0, 65)
> ===============================================
>      Volume: LIH2
>    material: LiqHydrogen
>     density: 0.0708 g/cm^3
> rad. length: 816.933 cm
>           A: 1.00797
>           Z: 1
>   ancestory: LIH2 -> TGTV -> TARG -> HALL -> SITE
>
> One can also have it generate the geometry from the XML at run-time
> using external HDDS tools similar to what was recently done with hdgeant.
>
> If the program is run with no arguments, a Usage statement is printed:
>
> >hd_geom_query
>
> Usage:
>     hd_geom_query [options] X Y Z
>
> Print the material properties for the specified point in lab
>  coordinates. Units of X,Y, and Z are cm.
>
> By default, this uses the geometry built into the file libHDGEOMETRY.a
> that was used to link this executable. The -xml switch may be used
> to dynamically compile and link code generated from the XML at run
> time. If an equals sign "=" follows the -xml switch then the
> main_HDDS.xml file is taken from the remainder of that argument.
>
> If the -xml switch is specified, then a file named "tmp_hddsroot.so"
> is searched for in the current directory. If found, it is opened and
> the geometry checksum is read from it and compared to that of the XML
> specified (which may be the default of $HDDS_HOME/main_HDDS.xml).
> If the two match, then that shared object is used, bypassing the
> (expensive) compilation phase. If the file is not present, is unreadable,
> or the checksums don't match, then the shared object is automatically
> (re)generated.
>
>  options:
>     -h or --help          Print this usage statement
>     -xml[=main_HDDS.xml]  Dynamically generate geometry
>     -checksum             Print the MD5 checksum of the
>                           geometry and exit
>
> If the -xml option is given and no file is specified,
> then a value of: $HDDS_HOME/main_HDDS.xml
> is used.
>
> The source for this is now in the sim-recon tree and can be found here:
>
> https://halldsvn.jlab.org/repos/trunk/sim-recon/src/programs/Utilities/hd_geom_query
>
>
> Regards,
> -David
>
>
> -------- Original Message --------
> Subject: 	r10030 - in trunk/sim-recon/src/programs/Utilities: . hd_geom_query
> Date: 	Wed, 28 Nov 2012 10:37:40 -0500
> From: 	Hall-D.SVN.Repository at jlab.org
> To: 	davidl at jlab.org, brash at pcs.cnu.edu, wolin at jlab.org, zisis at uregina.ca, mashephe at indiana.edu, remitche at indiana.edu, zihlmann at jlab.org, somov at jlab.org, staylor at jlab.org, kmoriya at indiana.edu, pmatt at jlab.org, leckey at jlab.org
>
>
>
> Author: davidl
> Date: 2012-11-28 10:37:40 -0500 (Wed, 28 Nov 2012)
> New Revision: 10030
>
> Added:
>     trunk/sim-recon/src/programs/Utilities/hd_geom_query/
>     trunk/sim-recon/src/programs/Utilities/hd_geom_query/Makefile
>     trunk/sim-recon/src/programs/Utilities/hd_geom_query/hd_geom_query.cc
> Log:
> A new utility to get info on the volume located at a
> specific location in lab coordinates. This uses the
> ROOT TGeo facility. The hddsroot.h file generated by
> HDDS is compiled in and used by default. An option
> exists to regenerate this file and compile and link
> it dynamically similar to what is now done in hdgeant.
>
>
>
>
>
>
> _______________________________________________
> Halld-offline mailing list
> Halld-offline at jlab.org
> https://mailman.jlab.org/mailman/listinfo/halld-offline

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