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146 lines
4.5 KiB
146 lines
4.5 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 QUAL2 (MXND, MXCORN, MLN, NCORN, LCORN, LNODES, ICOMB,
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& BNSIZE, ANGLE, LXN, ITEST, LTEST, QUAL, POSBL2, POSBL3, ROWCHN,
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& ISTART, IEND)
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C***********************************************************************
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C SUBROTINE QUAL2 = CHECKS THE QUALITY OF A SEMICIRCLE INTERPRETATION
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C***********************************************************************
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DIMENSION LNODES (MLN, MXND), ANGLE (MXND), LCORN (MXCORN)
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DIMENSION BNSIZE (2, MXND)
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DIMENSION ICOMB (MXCORN), ITEST (2), LTEST (2), LXN (4, MXND)
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LOGICAL ERR, POSBL2, POSBL3, ROWCHN, SHRUNK
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REAL NICKS, NICKC
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C ... See note below regarding bug...
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ISTEP = 0
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C ASSUME PERFECT QUALITY
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QUAL = 0.
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POSBL2 = .FALSE.
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POSBL3 = .FALSE.
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ROWCHN = .FALSE.
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C FIRST GET THE INTERVAL LENGTHS TO THE CHOSEN CORNERS
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ILEN = 2
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CALL SPACED (MXND, MXCORN, MLN, ILEN, NCORN, LCORN, LNODES, ICOMB,
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& ITEST, LTEST, ERR)
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IF (ERR) RETURN
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C SEE IF A SEMICIRCLE INTERPRETATION IS POSSIBLE WITH
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C THESE INTERVALS
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IF ( (LTEST(1) .GE. 2) .AND. (LTEST(2) .GE. 2) ) THEN
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POSBL2 = .TRUE.
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ENDIF
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C NOT ADD UP THE NICKS FOR BAD ANGLES
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DO 100 I =1, NCORN
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NODE = LCORN (I)
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IF (ICOMB (I) .EQ. 1) THEN
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QUAL = QUAL + NICKC (ANGLE (NODE), LXN (1, NODE))
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ELSE
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QUAL = QUAL + NICKS (ANGLE (NODE), LXN (1, NODE))
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ENDIF
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100 CONTINUE
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C NOW SEE IF A TRIANGLE INTERPRETATION IS WARRANTED
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IF (LTEST (1) .GT. LTEST (2)) THEN
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I1 = ITEST (1)
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L1 = LTEST (1)
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I2 = ITEST (2)
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L2 = LTEST (2)
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ELSE
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I1 = ITEST (2)
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L1 = LTEST (2)
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I2 = ITEST (1)
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L2 = LTEST (1)
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ENDIF
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LDIF = (L1 - L2) / 2
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IF (LDIF .GT. L1 / 2) LDIF = L1 - LDIF
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C THIS TESTS THE FORCED TRIANGLE - THE NEW ROW MUST BE
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C ENDED AT A CURRENT SIDE NODE
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IF (L1 .EQ. L2) THEN
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NCHG1 = JUMPLP (MXND, MLN, LNODES, I1, LDIF)
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NCHG2 = JUMPLP (MXND, MLN, LNODES, I2, LDIF)
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QUAL13 = QUAL + NICKC (ANGLE (NCHG1), LXN (1, NCHG1))
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QUAL23 = QUAL + NICKC (ANGLE (NCHG2), LXN (1, NCHG2))
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IF ( (SHRUNK (BNSIZE (2, NCHG1), LNODES(8, NCHG1))) .AND.
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& (SHRUNK (BNSIZE (2, NCHG2), LNODES(8, NCHG2))) ) THEN
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POSBL3 = .TRUE.
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POSBL2 = .FALSE.
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IF (QUAL13 .LT. QUAL23) THEN
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IEND = NCHG1
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ISTART = I1
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ELSE
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IEND = NCHG2
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ISTART = I2
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ENDIF
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ELSEIF (SHRUNK (BNSIZE (2, NCHG1), LNODES(8, NCHG1))) THEN
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POSBL3 = .TRUE.
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POSBL2 = .FALSE.
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IEND = NCHG1
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ISTART = I1
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ELSEIF (SHRUNK (BNSIZE (2, NCHG2), LNODES(8, NCHG2))) THEN
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POSBL3 = .TRUE.
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POSBL2 = .FALSE.
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IEND = NCHG2
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ISTART = I2
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ELSE
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POSBL3 = .FALSE.
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ENDIF
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C SEE IF THE ROW NEEDS ADJUSTED SO THAT A RECTANGLE REMAINS POSSIBLE
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C WITH A SIGNIFICANTLY REDUCED ELEMENT SIZE ON THE LONG SIDE
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ELSE
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C ... There is a bug here since ISTEP is not defined
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C Since it has been 'kindof' working for several years,
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C we assume that ISTEP=0 will work the first time through
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C and we add that initialization to the beginning of this routine
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NCHG1 = JUMPLP (MXND, MLN, LNODES, I1, ISTEP)
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NCHG2 = JUMPLP (MXND, MLN, LNODES, I1, L1 - ISTEP)
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IF ( (SHRUNK (BNSIZE (2, NCHG1), LNODES(8, NCHG1))) .AND.
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& (SHRUNK (BNSIZE (2, NCHG2), LNODES(8, NCHG2))) ) THEN
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ROWCHN = .TRUE.
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ISTART = I2
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IEND = I1
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C CHECK THE SIZE REDUCTIONS AND TRIANGLE INTERPRETATION
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ELSE
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DO 110 ISTEP = LDIF + 1, L1 / 2 - 1
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NCHG1 = JUMPLP (MXND, MLN, LNODES, I1, ISTEP)
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NCHG2 = JUMPLP (MXND, MLN, LNODES, I1, L1 - ISTEP)
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IF ( (SHRUNK (BNSIZE (2, NCHG1), LNODES(8, NCHG1))) .AND.
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& (SHRUNK (BNSIZE (2, NCHG2), LNODES(8, NCHG2))) ) THEN
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ROWCHN = .TRUE.
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ISTART = I2
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IEND = I1
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GOTO 120
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ENDIF
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110 CONTINUE
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120 CONTINUE
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ENDIF
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ENDIF
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RETURN
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END
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