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*DECK MCTCTR
SUBROUTINE MCTCTR(IPTRK,IPRINT,NDIM,MAXMSH,NUCELL,MXGSUR,MXGREG,
1 MAXPIN,IUNFLD,DGMESH,NBIND,ODIR,POS,IREG,INDX,
2 IDIRC,MESHC,NSURC,NREGC,NTPIN,CELLPO,PINCEN,
3 INDEX,IDREG,DCMESH,ITPIN,DRAPIN)
*
*-----------------------------------------------------------------------
*
*Purpose:
* Find region index from global coordinates of a point within the
* geometry.
*
*Copyright:
* Copyright (C) 2008 Ecole Polytechnique de Montreal
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version
*
*Author(s): R. Le Tellier
*
*Parameters: input
* IPTRK pointer to the TRACKING data structure.
* IPRINT print level.
* NDIM problem dimensions.
* MAXMSH maximum number of elements in MESH array.
* NUCELL number of cell after unfolding in $X$, $Y$ and
* $Z$ directions.
* MXGSUR maximum number of surfaces for any geometry.
* MXGREG maximum number of region for any geometry.
* MAXPIN maximum number of pins in a cell.
* IUNFLD description of unfolded geometry.
* DGMESH meshing vector for global geometry.
* NBIND first dimension of INDX.
* ODIR search (octant) direction.
* POS spatial coordinates of the point to locate.
*
*Parameters: input/output
* IREG region index.
* INDX position index in the geometry structure.
*
*Parameters: scratch
* IDIRC undefined.
* MESHC undefined.
* NSURC undefined.
* NREGC undefined.
* NTPIN undefined.
* CELLPO undefined.
* PINCEN undefined.
* INDEX undefined.
* IDREG undefined.
* DCMESH undefined.
* ITPIN undefined.
* DRAPIN undefined.
*
*-----------------------------------------------------------------------
*
USE GANLIB
IMPLICIT NONE
*----
* SUBROUTINE ARGUMENTS
*----
TYPE(C_PTR) IPTRK
INTEGER IPRINT,NDIM,MAXMSH,NUCELL(3),MXGSUR,MXGREG,MAXPIN,
1 IUNFLD(2,NUCELL(1),NUCELL(2),NUCELL(3)),NBIND,ODIR(3),IREG,
2 INDX(NBIND,0:2),IDIRC(2),MESHC(4,2),NSURC(2),NREGC(2),NTPIN,
3 INDEX(5,-MXGSUR:MXGREG,2),IDREG(MXGREG,2),ITPIN(3,MAXPIN)
DOUBLE PRECISION DGMESH(-1:MAXMSH,4),POS(3),CELLPO(3,2),PINCEN(3),
1 DCMESH(-1:MAXMSH,4,2),DRAPIN(-1:4,MAXPIN)
*----
* LOCAL VARIABLES
*----
INTEGER JJ,ICELO,ICEL,ITRNO,ITRN,ILEV,ODIRC(3),IDG1,IDG2,IDIR
DOUBLE PRECISION POSC(4)
CHARACTER NAMCEL*9,NAMREC*12
LOGICAL INPIN
INTEGER INDOS(2,3)
CHARACTER RIDNAM*3
PARAMETER (RIDNAM='RIC')
DATA INDOS / 2,3,
1 3,1,
2 1,2 /
*----
* FIND LOCATION WITHIN THE GLOBAL ASSEMBLY (level 0)
*----
ICELO=INDX(5,0)
ITRNO=INDX(6,0)
DO IDIR=1,NDIM
IF (ODIR(IDIR).EQ.1) THEN
INDX(IDIR,0)=1
DO WHILE (POS(IDIR).GT.DGMESH(INDX(IDIR,0),IDIR))
INDX(IDIR,0)=INDX(IDIR,0)+1
ENDDO
ELSE
INDX(IDIR,0)=NUCELL(IDIR)-1
DO WHILE (POS(IDIR).LE.DGMESH(INDX(IDIR,0),IDIR))
INDX(IDIR,0)=INDX(IDIR,0)-1
ENDDO
INDX(IDIR,0)=INDX(IDIR,0)+1
ENDIF
ENDDO
DO IDIR=NDIM+1,3
INDX(IDIR,0)=1
ENDDO
ICEL=IUNFLD(1,INDX(1,0),INDX(2,0),INDX(3,0))
ITRN=IUNFLD(2,INDX(1,0),INDX(2,0),INDX(3,0))
INDX(5,0)=ICEL
INDX(6,0)=ITRN
IF (IPRINT.GT.4) THEN
WRITE(6,*) '**** FIND REGION WITHIN THE GEOMETRY ****'
IF (IPRINT.GT.5) THEN
WRITE(6,*) '0 - GLOBAL MESH:'
WRITE(6,'(3(I3,1X,1H(,F8.6,1H<,F8.6,1H<,F8.6,1H),2X))')
1 (INDX(JJ,0),DGMESH(INDX(JJ,0)-1,JJ),POS(JJ),
2 DGMESH(INDX(JJ,0),JJ),JJ=1,NDIM)
ENDIF
WRITE(6,*) 'CELL:',ICEL,' ROTATION:',ITRN
ENDIF
*----
* ENTER THE CORRESPONDING CELL GEOMETRY
*----
ILEV=1
IF (ICEL.EQ.ICELO) THEN
IF (INDX(7,ILEV).LE.0) THEN
WRITE(NAMCEL,'(A1,I8.8)') 'C',ICEL
NAMREC=NAMCEL//RIDNAM
CALL LCMGET(IPTRK,NAMREC,IDREG(1,ILEV))
ENDIF
IF (ITRN.NE.ITRNO) THEN
CELLPO(1,2)=DGMESH(INDX(1,0),1)
CELLPO(1,1)=DGMESH(INDX(1,0)-1,1)
CELLPO(2,2)=DGMESH(INDX(2,0),2)
CELLPO(2,1)=DGMESH(INDX(2,0)-1,2)
IF(NDIM.EQ.3) THEN
CELLPO(3,2)=DGMESH(INDX(3,0),3)
CELLPO(3,1)=DGMESH(INDX(3,0)-1,3)
ENDIF
ENDIF
ELSE
CALL MCTLDC(IPTRK,IPRINT,NDIM,MAXMSH,MXGSUR,MXGREG,NBIND,ICEL,
1 INDX(1,0),RIDNAM,DGMESH,IDIRC(ILEV),MESHC(1,ILEV),
2 NSURC(ILEV),NREGC(ILEV),NTPIN,CELLPO,DCMESH(-1,1,ILEV),
3 INDEX(1,-MXGSUR,ILEV),ITPIN,DRAPIN,IDREG(1,ILEV))
ENDIF
*----
* AFTER THE CALL TO MCTCCC THE COORDINATES ARE IN TERMS OF CELL COORDINATES
*----
CALL MCTCCC(NDIM,ITRN,CELLPO,ODIR,POS,ODIRC,POSC)
*----
* FIND IF IT IS WITHIN A PIN
*----
IF (NTPIN.GT.0) THEN
CALL MCTPIR(IPTRK,IPRINT,NDIM,MAXMSH,MXGSUR,MXGREG,NTPIN,
1 NBIND,INDX(1,1),ITPIN,DRAPIN,DCMESH,MESHC(1,2),NSURC(2),
2 NREGC(2),PINCEN,INDEX(1,-MXGSUR,2),IDREG(1,2),POSC,
3 IDIRC(2),INPIN)
ELSE
INPIN=.FALSE.
ENDIF
*----
* FIND LOCATION WITHIN CELL OR PIN
*----
IF (INPIN) ILEV=2
* Find location in Cartesian mesh
DO IDIR=1,NDIM
JJ=1
DO WHILE (POSC(IDIR).GT.DCMESH(JJ,IDIR,ILEV))
JJ=JJ+1
ENDDO
INDX(IDIR,ILEV)=JJ
ENDDO
DO IDIR=NDIM+1,3
INDX(IDIR,ILEV)=1
ENDDO
IF (IDIRC(ILEV).GT.0) THEN
* Find location in cylindrical mesh
IF (ILEV.EQ.1) THEN
* calculate distance to the cell center
* (already calculated for a pin in MCTPIR)
IDG1=INDOS(1,IDIRC(ILEV))
IDG2=INDOS(2,IDIRC(ILEV))
POSC(4)=((POSC(IDG1)-DCMESH(-1,IDG1,ILEV))**2
1 +(POSC(IDG2)-DCMESH(-1,IDG2,ILEV))**2)
POSC(4)=SQRT(POSC(4))
ENDIF
JJ=MESHC(4,ILEV)
IF (POSC(4).GT.DCMESH(JJ,4,ILEV)) THEN
INDX(4,ILEV)=0
ELSE
JJ=JJ-1
DO WHILE(POSC(4).LT.DCMESH(JJ,4,ILEV))
JJ=JJ-1
ENDDO
INDX(4,ILEV)=JJ+1
ENDIF
ELSE
INDX(4,ILEV)=0
ENDIF
IF (IPRINT.GT.5) THEN
WRITE(6,*) ILEV,'- LOCAL MESH:'
WRITE(6,'(3(I3,1X,1H(,F8.6,1H<,F8.6,1H<,F8.6,1H),2X))')
1 (INDX(JJ,ILEV),DCMESH(INDX(JJ,ILEV)-1,JJ,ILEV),POSC(JJ),
2 DCMESH(INDX(JJ,ILEV),JJ,ILEV),JJ=1,NDIM)
ENDIF
* Find location of this element in the index
IREG=1
DO WHILE ((INDX(1,ILEV).NE.INDEX(1,IREG,ILEV)).OR.
1 (INDX(2,ILEV).NE.INDEX(2,IREG,ILEV)).OR.
2 (INDX(3,ILEV).NE.INDEX(3,IREG,ILEV)).OR.
3 (INDX(4,ILEV).NE.INDEX(4,IREG,ILEV)))
IREG=IREG+1
IF (IREG.GT.NREGC(ILEV)) THEN
WRITE(6,*) (INDX(JJ,ILEV),JJ=1,4)
CALL XABORT('MCTCTR: INDEXES DO NOT MATCH')
ENDIF
ENDDO
*
IREG=ABS(IDREG(IREG,ILEV))
DO JJ=1,2
INDX(7,JJ)=0
ENDDO
INDX(7,ILEV)=IREG
IF (IPRINT.GT.4) THEN
WRITE(6,*) 'REGION:',IREG
WRITE(6,*) '*** FOUND REGION WITHIN THE GEOMETRY ***'
ENDIF
IF (IREG.LE.0) THEN
WRITE(6,*) INDX(1,ILEV),INDX(2,ILEV),INDX(3,ILEV),INDX(4,ILEV)
CALL XABORT('MCTCTR: INVALID REGION FOUND.')
ENDIF
*
RETURN
END
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