*-- Author : Stephen Burke
SUBROUTINE FFPCEL(XY,JFT,ICELL,DRIFT)
*-----------------------------------------Updates 13/03/92-------
**: FFPCEL 30205.SB. Only call UGTBNK when run number changes
*-----------------------------------------Updates 13/02/92-------
**: FFPCEL 30205.SB. ERRLOG error numbers changed.
*-----------------------------------------Updates 07/02/92-------
**: FFPCEL 30205.SB. Remove unused FKMEAS sequence.
*-----------------------------------------Updates 24/01/92-------
**: FFPCEL 30205.SB. ERRLOG message format changed.
*-----------------------------------------Updates----------------
**********************************************************************
* *
* Calculate a planar cell number from a position *
* *
* Returns ICELL = -1 if JFT is invalid *
* *
**********************************************************************
DOUBLE PRECISION XY(2),PHI
DIMENSION FGAP(75)
SAVE FGAP,IRUN
*KEEP,BCS.
INTEGER NHROW,NHCOL,NHLEN
PARAMETER (NHROW = 2, NHCOL = 1, NHLEN=2)
INTEGER NBOSIW
PARAMETER (NBOSIW=1000000)
INTEGER IW(NBOSIW)
REAL RW(NBOSIW)
COMMON /BCS/ IW
EQUIVALENCE (RW(1),IW(1))
SAVE /BCS/
*KEEP,BOSMDL.
C ------BOSMDL
LOGICAL BEGJOB,ENDRUN,BEGRUN,REVENT,ENDJOB,OTHDAT
COMMON/BOSMDL/BEGJOB,ENDRUN,BEGRUN,REVENT,ENDJOB,OTHDAT,
+ LCCRUN,NCCRUN,NEVENT,
+ IHA,IBS,IDB,IDATEL,LUP,ISN,JSN
SAVE /BOSMDL/
C ------
*KEEP,FKNPL.
CHARACTER*5 CKDBG
PARAMETER (CKDBG='FKDBG')
PARAMETER (NPL=72)
LOGICAL LTRUE,LFIRST,LTRPL,LTRPLD
DOUBLE PRECISION TRUE,RTRUE,CHITRU,SPRO,CPRO,SFIL,CFIL
&, SSMT,CSMT,SSMTR,CSMTR,DPRO,CBPRO,QPRO,QGAIN
&, RPRO,CRPRO,RFIL,CRFIL,RSMT,CRSMT,CHIFIL,CHISMT
*
* Per-track values can go in H1WORK; note that LTRUE and LFIRST must
* be set at least per event.
*
* This is about 36k words long; the remaining common blocks are
* about 3.6k in total. Some of this could be in /H1WORK/, but the
* blocks would have to be reorganised.
*
COMMON /H1WORK/
* /FKPROJ/
& SPRO(5,NPL),CPRO(5,5,NPL)
* /FKFILT/
&, SFIL(5,NPL),CFIL(5,5,NPL)
* /FKSMTH/
&, SSMT(5,NPL),CSMT(5,5,NPL)
&, SSMTR(5,NPL),CSMTR(5,5,NPL)
* /FKINT/
&, DPRO(5,5,NPL),CBPRO(5,5,NPL),QPRO(5,5,NPL)
&, QGAIN(5,5,NPL),IAPROX,LFIRST
* /FKRSID/
&, RPRO(2,NPL),CRPRO(2,2,NPL),RFIL(2,NPL)
&, CRFIL(2,2,NPL),RSMT(2,NPL),CRSMT(2,2,NPL)
&, CHIFIL(NPL),CHISMT(NPL)
* /FKTRUE/
&, TRUE(5,NPL),RTRUE(5,NPL),CHITRU(NPL),LTRUE
* /FKDBG/
&, LTRPL(NPL),LTRPLD(NPL)
*KEEP,FFSTEE.
PARAMETER (NFT=72)
LOGICAL LRISV,LWMAP,LGRAPH,LTRUTH
REAL DSX,DSY,DSQOP,DSTTH,DSPHI,PMCUT,PCUT,CHPCUT
&, QOPMAX,THEMAX,RFTMIN,RFTMAX,CEMAX
COMMON /FFSTEE/ DSX,DSY,DSQOP,DSTTH,DSPHI
&, PMCUT,IDIAG,JPLRSV,LRISV,LWMAP(NFT),JPLMAX
&, IRP(NPL),JPLFT(NPL),JFTPL(NFT)
&, LUNGKS,IWKGKS,IDGKS,LUNHB,LUNGKM,IWKGKM,IDGKM
&, LGRAPH,LTRUTH,IHFF,IHFK,ISRJCT,PCUT,CHPCUT
&, QOPMAX,THEMAX,RFTMIN,RFTMAX,CEMAX
*KEEP,FKPIDP.
DOUBLE PRECISION PI,TWOPI,PIBY2
PARAMETER (PI=3.141592653589793238)
PARAMETER (TWOPI=PI*2.0D0,PIBY2=PI/2.0D0)
*KEND.
DATA IRUN/-999999/
**********************************************************************
ICELL = -1
IF (IRUN.NE.NCCRUN) THEN
* Get geometry bank
CALL UGTBNK('FGAP',INFGAP)
IF (INFGAP.LE.0) THEN
CALL ERRLOG(341,'S:FFPCEL: Bank FGAP not found')
RETURN
ENDIF
IRUN = NCCRUN
CALL UCOPY(RW(INFGAP+1),FGAP,75)
ENDIF
IF (JFT.GE.1 .AND. JFT.LE.12) THEN
KMOD = 0
ELSEIF (JFT.GE.25 .AND. JFT.LE.36) THEN
KMOD = 1
ELSEIF (JFT.GE.49 .AND. JFT.LE.60) THEN
KMOD = 2
ELSE
RETURN
ENDIF
* Orientation and wire number
KORI = MOD(JFT-1,12)/4
KWIRE = MOD(JFT-1,4)
* NB The format of FGAP is hard-coded here
W0 = FGAP(7)
DW = FGAP(8)
INDMOD = 31 + 5*(3*KMOD + KORI)
PHI = FGAP(INDMOD+3) - PIBY2
CPHI = DCOS(PHI)
SPHI = DSIN(PHI)
STAGG = FGAP(INDMOD+4)
* Cell number and drift (NB check stagger!)
W = CPHI*XY(2) - SPHI*XY(1)
WCELL = W - W0 + DW/2. - STAGG*(-1)**KWIRE
KCELL = WCELL/DW
IF (KCELL.LT.0 .OR. KCELL.GT.25) RETURN
DRIFT = WCELL - KCELL*DW - DW/2.
* Adjust cell number for split cells
IF (KCELL.GE.10 .AND. KCELL.LE.15) THEN
R = CPHI*XY(1) + SPHI*XY(2)
IF (R.LT.0.) KCELL = KCELL + 6
ELSEIF (KCELL.GT.15) THEN
KCELL = KCELL + 6
ENDIF
* Cell number
ICELL = 384*KMOD + 128*KORI + 4*KCELL + KWIRE
RETURN
END
*