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*DECK NXTXYZ
SUBROUTINE NXTXYZ(IPTRK ,IPRINT,NDIM ,ITYPBC,MAXMSH,NUCELL,
> ABSC,DGMESH)
*
*-----------------------------------------------------------------------
*
*Purpose:
* Find global cell limits.
*
*Copyright:
* Copyright (C) 2005 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):
* G. Marleau, R.Roy
*
*Parameters: input
* IPTRK pointer to the TRACKING data structure in
* update or creation mode.
* IPRINT print level.
* NDIM number of dimensions for geometry.
* ITYPBC type of boundary conditions where:
* =0 for geometry with Cartesian boundaries;
* =1 for geometry with annular boundary;
* =2 for geometry with hexagonal boundary.
* MAXMSH maximum number of elements in mesh vector for
* each directions.
* NUCELL number of cell after unfolding in
* $X$, $Y$ and $Z$ directions.
*
*Parameters: output
* ABSC cell width and upper limit.
* DGMESH meshing vector for global geometry.
*
*Reference:
* G. Marleau,
* New Geometries Processing in DRAGON: The NXT: Module,
* Report IGE-260, Polytechnique Montreal,
* Montreal, 2005.
* \\\\
* Extracted from the subroutine XELTI2 and XELTI3.
*
*----------
*
USE GANLIB
IMPLICIT NONE
*----
* Subroutine arguments
*----
TYPE(C_PTR) IPTRK
INTEGER IPRINT,NDIM,ITYPBC,MAXMSH,NUCELL(3)
DOUBLE PRECISION ABSC(3,2),DGMESH(-1:MAXMSH,4)
*----
* Local parameters
*----
INTEGER IOUT
CHARACTER NAMSBR*6
PARAMETER (IOUT=6,NAMSBR='NXTXYZ')
DOUBLE PRECISION DZERO,DONE
PARAMETER (DZERO=0.0D0,DONE=1.0D0)
*----
* Local variables
*----
INTEGER IDIR,ICELL
CHARACTER NAMREC*12
DOUBLE PRECISION SIDEH,CENTH,DHMAX
*----
* Data
*----
CHARACTER CDIR(4)*1
SAVE CDIR
DATA CDIR /'X','Y','Z','R'/
*----
* Processing starts:
* print routine openning output header if required
* and initialize various parameters.
*----
IF(IPRINT .GE. 20) THEN
WRITE(IOUT,6000) NAMSBR
ENDIF
DGMESH(-1:MAXMSH,:4)=DZERO
IF(ITYPBC .EQ. 0) THEN
DO IDIR=1,NDIM
NAMREC='G00000001SM'//CDIR(IDIR)
CALL LCMGET(IPTRK,NAMREC,DGMESH(0,IDIR))
ABSC(IDIR,2)=DGMESH(NUCELL(IDIR),IDIR)
ABSC(IDIR,1)=ABSC(IDIR,2)-DGMESH(0,IDIR)
IF(IPRINT .GE. 20) THEN
WRITE(IOUT,6010) CDIR(IDIR),ABSC(IDIR,1)
ENDIF
ENDDO
DO IDIR=NDIM+1,3
ABSC(IDIR,1)=DONE
ABSC(IDIR,2)=DONE
ENDDO
ELSE IF(ITYPBC .EQ. 1) THEN
*----
* Find Cartesian box surrounding circle in plane
*----
IDIR=4
NAMREC='G00000001SM'//CDIR(IDIR)
CALL LCMGET(IPTRK,NAMREC,DGMESH(0,IDIR))
ABSC(1,2)=DGMESH(NUCELL(IDIR),IDIR)
ABSC(1,1)=ABSC(1,2)
ABSC(2,1)=ABSC(1,1)
ABSC(2,2)=ABSC(1,2)
IF(IPRINT .GE. 20) THEN
WRITE(IOUT,6010) CDIR(IDIR),ABSC(IDIR,1)
ENDIF
IDIR=3
IF(NDIM .EQ. 3) THEN
NAMREC='G00000001SM'//CDIR(IDIR)
CALL LCMGET(IPTRK,NAMREC,DGMESH(0,IDIR))
ABSC(IDIR,2)=DGMESH(NUCELL(IDIR),IDIR)
ABSC(IDIR,1)=ABSC(IDIR,2)-DGMESH(0,IDIR)
IF(IPRINT .GE. 20) THEN
WRITE(IOUT,6010) CDIR(IDIR),ABSC(IDIR,1)
ENDIF
ELSE
ABSC(IDIR,1)=DONE
ABSC(IDIR,2)=DONE
ENDIF
ELSE
*----
* Find Cartesian box surrounding hexagons in plane
*----
DO IDIR=1,2
NAMREC='G00000001SM'//CDIR(IDIR)
CALL LCMGET(IPTRK,NAMREC,DGMESH(0,IDIR))
SIDEH=DGMESH(0,IDIR)
CENTH=DGMESH(1,IDIR)
DHMAX=DZERO
DO ICELL=2,NUCELL(IDIR)
DHMAX=MAX(DHMAX,ABS(DGMESH(NUCELL(IDIR),IDIR)-CENTH))
ENDDO
ABSC(IDIR,2)=DHMAX+SIDEH
ABSC(IDIR,1)=2.0*ABSC(IDIR,2)
ENDDO
IDIR=3
IF(NDIM .EQ. 3) THEN
NAMREC='G00000001SM'//CDIR(IDIR)
CALL LCMGET(IPTRK,NAMREC,DGMESH(0,IDIR))
ABSC(IDIR,2)=DGMESH(NUCELL(IDIR),IDIR)
ABSC(IDIR,1)=ABSC(IDIR,2)-DGMESH(0,IDIR)
IF(IPRINT .GE. 20) THEN
WRITE(IOUT,6010) CDIR(IDIR),ABSC(IDIR,1)
ENDIF
ELSE
ABSC(IDIR,1)=DONE
ABSC(IDIR,2)=DONE
ENDIF
ENDIF
IF(IPRINT .GE. 20) THEN
WRITE(IOUT,6001) NAMSBR
ENDIF
*----
* Processing finished: return
*----
RETURN
*----
* Output formats
*----
6000 FORMAT('(* Output from --',A6,'-- follows ')
6001 FORMAT(' Output from --',A6,'-- completed *)')
6010 FORMAT(' Geometry width in ',A1,' = ',F20.15)
END
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