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206 lines
5.8 KiB
206 lines
5.8 KiB
2 years ago
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C Copyright(C) 1999-2020 National Technology & Engineering Solutions
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C of Sandia, LLC (NTESS). Under the terms of Contract DE-NA0003525 with
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C NTESS, the U.S. Government retains certain rights in this software.
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C
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C See packages/seacas/LICENSE for details
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SUBROUTINE LLIST (MS, ML, MAXNL, NS, NL, KNUM, LISTL, ILINE,
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& ISIDE, NLPS, IFLINE, ILLIST, LCON, ISLIST, LINKS, LINKL, ERR)
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C***********************************************************************
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C SUBROUTINE LLIST = PRODUCE LIST OF LINES FOR REGION
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C***********************************************************************
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C SUBROUTINE CALLED BY:
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C PERIM = GENERATES PERIMETER OF THE REGION
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C***********************************************************************
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C PRODUCE THE LIST OF (PHYSICAL INDICES OF) LINES FOR (PHYSICAL)
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C REGION KREG. THIS LIST IS (LISTL (I), I=1, NL).
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C *BACKWARDS* SIDES WILL BE REVERSED.
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C IT IS ASSUMED LINES ARE PROPERLY LISTED IN ORDER ON SIDE CARDS.
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C IF THEY ARE NOT, PERIM WILL DIAGNOSE IT.
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C ERR = .TRUE. IF ERRORS WERE ENCOUNTERED.
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C***********************************************************************
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DIMENSION ILINE (ML), LCON (3, ML)
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DIMENSION ISIDE (MS), NLPS (MS), IFLINE (MS), ILLIST (MS * 3)
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DIMENSION ISLIST (NS), LISTL (MAXNL)
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DIMENSION LINKL (2, ML), LINKS (2, MS)
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LOGICAL ERR, ADDLNK
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ERR = .TRUE.
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ADDLNK = .FALSE.
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IS = ISLIST (1)
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C FIRST SIDE
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IF (IS .EQ. 0) THEN
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RETURN
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ELSEIF (IS .LT. 0) THEN
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IFL1 = IABS (IS)
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ILL1 = IABS (IS)
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NEW = 1
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LISTL (NEW) = IFL1
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ELSE
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CALL LTSORT (MS, LINKS, IS, IPNTR, ADDLNK)
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I1 = IFLINE (IPNTR)
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I2 = I1 + NLPS (IPNTR) - 1
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IFL1 = ILLIST (I1)
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ILL1 = ILLIST (I2)
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NEW = 0
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DO 100 I = I1, I2
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NEW = NEW + 1
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LISTL (NEW) = ILLIST (I)
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100 CONTINUE
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ENDIF
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IF (NS .LE. 1) THEN
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NL = NEW
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ERR = .FALSE.
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RETURN
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ENDIF
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C SECOND SIDE
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IS2 = ISLIST (2)
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IF (IS2 .EQ. 0) THEN
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RETURN
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ELSEIF (IS2 .LT. 0) THEN
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IFL2 = IABS (IS2)
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ILL2 = IABS (IS2)
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ELSE
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CALL LTSORT (MS, LINKS, IS2, IPNTR, ADDLNK)
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I1 = IFLINE (IPNTR)
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I2 = I1 + NLPS (IPNTR) - 1
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IFL2 = ILLIST (I1)
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ILL2 = ILLIST (I2)
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ENDIF
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C DECIDE WHICH END OF SIDE ONE IS THE STARTING POINT
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CALL LTSORT (ML, LINKL, IFL2, IPNTR, ADDLNK)
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K1 = LCON (1, IPNTR)
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K2 = LCON (2, IPNTR)
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CALL LTSORT (ML, LINKL, ILL2, IPNTR, ADDLNK)
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K3 = LCON (1, IPNTR)
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K4 = LCON (2, IPNTR)
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CALL LTSORT (ML, LINKL, IFL1, IPNTR, ADDLNK)
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J1 = LCON (1, IPNTR)
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J2 = LCON (2, IPNTR)
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CALL LTSORT (ML, LINKL, ILL1, IPNTR, ADDLNK)
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J3 = LCON (1, IPNTR)
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J4 = LCON (2, IPNTR)
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C FIRST SIDE IN PROPER ORDER
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IF ( (J3 .EQ. K1) .OR. (J3 .EQ. K2) .OR. (J3 .EQ. K3)
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& .OR. (J3 .EQ. K4) .OR. (J4 .EQ. K1) .OR. (J4 .EQ. K2)
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& .OR. (J4 .EQ. K3) .OR. (J4 .EQ. K4)) THEN
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CONTINUE
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C FIRST SIDE NEEDS REVERSED
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ELSEIF ( (J1 .EQ. K1) .OR. (J1 .EQ. K2) .OR. (J1 .EQ. K3)
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& .OR. (J1 .EQ. K4) .OR. (J2 .EQ. K1) .OR. (J2 .EQ. K2)
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& .OR. (J2 .EQ. K3) .OR. (J2 .EQ. K4)) THEN
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CALL IREVER (LISTL, NEW)
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C CONNECTIVITY DOES NOT EXIST
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ELSE
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IF (IS2 .GT. 0) THEN
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CALL LTSORT (MS, LINKS, IS2, IPNTR, ADDLNK)
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WRITE ( * , 10000)KNUM, ISIDE (IPNTR)
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ELSE
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CALL LTSORT (ML, LINKL, IABS (IS2), IPNTR, ADDLNK)
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WRITE ( * , 10010)KNUM, ILINE (IPNTR)
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ENDIF
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RETURN
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ENDIF
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NL = NEW
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DO 120 KS = 2, NS
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I = LISTL (NL)
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CALL LTSORT (ML, LINKL, I, IPNTR, ADDLNK)
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J1 = LCON (1, IPNTR)
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J2 = LCON (2, IPNTR)
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IS = ISLIST (KS)
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C ADD NEW LINES TO LIST
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IF (IS .EQ. 0) THEN
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RETURN
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ELSEIF (IS .LT. 0) THEN
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IFL = IABS (IS)
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ILL = IABS (IS)
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NEW = NL + 1
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LISTL (NEW) = IABS (IS)
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ELSE
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CALL LTSORT (MS, LINKS, IS, IPNTR, ADDLNK)
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I1 = IFLINE (IPNTR)
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I2 = I1 + NLPS (IPNTR) - 1
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IFL = ILLIST (I1)
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ILL = ILLIST (I2)
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NEW = NL
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DO 110 I = I1, I2
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NEW = NEW + 1
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LISTL (NEW) = ILLIST (I)
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110 CONTINUE
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ENDIF
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C DETERMINE WHETHER THIS SIDE IS BACKWARDS
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CALL LTSORT (ML, LINKL, IFL, IPNTR, ADDLNK)
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K1 = LCON (1, IPNTR)
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K2 = LCON (2, IPNTR)
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CALL LTSORT (ML, LINKL, ILL, IPNTR, ADDLNK)
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K3 = LCON (1, IPNTR)
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K4 = LCON (2, IPNTR)
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C THIS SIDE IS IN PROPER ORDER
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IF ( (J1 .EQ. K1) .OR. (J1 .EQ. K2) .OR. (J2 .EQ. K1)
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& .OR. (J2 .EQ. K2)) THEN
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CONTINUE
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C THIS SIDE NEEDS REVERSING
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ELSEIF ( (J1 .EQ. K3) .OR. (J1 .EQ. K4) .OR. (J2 .EQ. K3)
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& .OR. (J2 .EQ. K4)) THEN
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CALL LTSORT (MS, LINKS, IS, IPNTR, ADDLNK)
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CALL IREVER (LISTL (NL + 1), NLPS (IPNTR))
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C CONNECTIVITY DOES NOT EXIST
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ELSE
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IF (IS .GT. 0) THEN
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CALL LTSORT (MS, LINKS, IS, IPNTR, ADDLNK)
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WRITE ( * , 10000)KNUM, ISIDE (IPNTR)
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ELSE
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CALL LTSORT (ML, LINKL, IABS (IS), IPNTR, ADDLNK)
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WRITE ( * , 10010)KNUM, ILINE (IPNTR)
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ENDIF
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RETURN
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ENDIF
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NL = NEW
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120 CONTINUE
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C SUCCESSFUL LINE LIST GENERATION
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ERR = .FALSE.
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RETURN
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10000 FORMAT (' IN REGION', I5, ', SIDE', I5, ' DOES NOT CONNECT TO',
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& /, ' THE PREVIOUS SECTION OF THE PERIMETER')
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10010 FORMAT (' IN REGION', I5, ', LINE', I5, ' DOES NOT CONNECT TO',
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& /, ' THE PREVIOUS SECTION OF THE PERIMETER')
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END
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