CERN Program Library Long Writeup W5013 - CERNLIB ...

ITRA
NUMBV
HITS
NHITS
(INTEGER) is a 1-dim array of dimension NHMAX that contains on output for each hit the number
of the track which has produced it;
(INTEGER) 2-dim array (NVDIM,NHMAX) that containis on output for each hit the list of volume
numbers which identify the detector, all values set to 0 means that no more volumes are stored;
(REAL) 2-dim array (NHDIM,NHMAX) that containis NHITS hits;
(INTEGER) number of hits returned, in case the total number of hits is greater than NHMAX,
NHITS is set to NHMAX+1 and NHMAX hits are returned.
This rotine returns the hits produced by track ITRS (or by any track) in the detector CHDET identified by the
list NUMVS belonging to set CHSET.
HITS(1,I) is element 1 of hit number I;
NUMBV(1,I) is volume number 1 of hit number I;
ITRA(I) is the track number corresponding to hit number I;
The arrays NUMVS, NUMBV, HITS and ITRA must be dimensioned to:
NUMVS(NVDIM)
NUMBV(NVDIM,NHMAX)
HITS(NHDIM,NHMAX)
ITRA(NHMAX)
CALL GFPATH
(ISET,IDET,NUMBV,NLEV*,LNAM*,LNUM*)
ISET
IDET
NUMBV
NLEV
LNAM
LNUM
(INTEGER) set number;
(INTEGER) detector number;
(INTEGER) array of numbers which identify uniquely detector number IDET;
(INTEGER) number of elements filled of arrays LNAM and LNUM;
(INTEGER) array of NLEV volume names stored in ASCII code in integers;
(INTEGER) array of NLEV copy numbers.
This routine returns the list of volume names and numbers which identify the complete ancestry in the
JVOLUM data structure of the volume corresponding to the detector number IDET in set number ISET and
which is identified by the volume numbers NUMBV (see GFHITS).
GFPATH assumes that the detectors have been declared via GSDETV and not GSDET. The main use of GFPATH
is to prepare the lists LNAM and LNUM required by the routine GLVOLU to fill the common /GCVOLU/. Once
/GCVOLU/ is properly filled, it is possible to use the GEANT routines to transform from the local to the master
reference system and so on.
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