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116 lines
3.9 KiB
116 lines
3.9 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 TRIFIX (MXND, MLN, XN, YN, ZN, NUID, LXK, KXL, NXL,
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& LXN, NNN, LLL, KKK, NAVAIL, IAVAIL, ANGLE, LNODES, BNSIZE,
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& NLOOP, DEV1, KREG, XMIN, XMAX, YMIN, YMAX, ZMIN, ZMAXZ, GRAPH,
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& VIDEO, NOROOM, ERR)
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C***********************************************************************
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C SUBROUTINE TRIFIX = CHECKS ALL ELEMENTS FOR ANY TRIANGULAR SHAPED
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C LONG ELEMENT AND DELETES THEM WHEN
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C FOUND AND POSSIBLE
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C***********************************************************************
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DIMENSION ANGLE (MXND), BNSIZE (2, MXND), LNODES (MLN, MXND)
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DIMENSION NODES(4)
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DIMENSION LXK(4, MXND), NXL(2, 3*MXND), KXL(2, 3*MXND)
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DIMENSION LXN(4, MXND), XN(MXND), YN(MXND), ZN(MXND), NUID(MXND)
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CHARACTER*3 DEV1
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LOGICAL ERR, DONE, GRAPH, REDO, CCW
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LOGICAL VIDEO, NOROOM
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PI = ATAN2(0.0, -1.0)
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TWOPI = 2.0 * PI
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ERR = .FALSE.
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DONE = .FALSE.
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CCW = .TRUE.
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KMAX = 30
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KOUNT = 0
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C TOLERANCE IS SET AT 150 DEGREES
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TOLER = 2.6179939
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100 CONTINUE
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KOUNT = KOUNT + 1
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IF (KOUNT .GT. KMAX) GOTO 140
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REDO = .FALSE.
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DO 130 KELEM = 1, KKK
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IF (LXK (1, KELEM) .GT. 0) THEN
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CALL GNXKA (MXND, XN, YN, KELEM, NODES, AREA, LXK, NXL, CCW)
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DO 110 I = 1, 4
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I1 = NODES (I)
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IF (I .EQ. 1) THEN
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I0 = NODES (4)
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I2 = NODES (2)
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ELSEIF (I .EQ. 4) THEN
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I0 = NODES (3)
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I2 = NODES (1)
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ELSE
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I0 = NODES (I - 1)
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I2 = NODES (I + 1)
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ENDIF
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ANG1 = ATAN2 (YN (I0) - YN (I1), XN (I0) - XN (I1))
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IF (ANG1 .LT. 0.) ANG1 = ANG1 + TWOPI
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ANG2 = ATAN2 (YN (I2) - YN (I1), XN (I2) - XN (I1))
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IF (ANG2 .LT. 0.) ANG2 = ANG2 + TWOPI
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ANG = ANG1 - ANG2
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IF (ANG .LT. 0.) ANG = ANG + TWOPI
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CALL LONGEL (MXND, MLN, LNODES, XN, YN, NUID, LXK, KXL,
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& NXL, LXN, NNN, NAVAIL, IAVAIL, I1, KELEM, ANG, TOLER,
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& I0, I2, KREG, XMIN, XMAX, YMIN, YMAX, KKK, LLL,
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& DONE, GRAPH, VIDEO, NOROOM, ERR, KKKADD)
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IF ((NOROOM) .OR. (ERR)) GOTO 140
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IF (DONE) THEN
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IF ((GRAPH) .AND. (.NOT. VIDEO)) THEN
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DIST = MAX (ABS(XN (I0) - XN (I1)),
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& ABS(XN (I2) - XN (I1)), ABS(YN (I0) - YN (I1)),
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& ABS(YN (I2) - YN (I1))) * 3.
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XMIN = XN (I1) - DIST
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XMAX = XN (I1) + DIST
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YMIN = YN (I1) - DIST
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YMAX = YN (I1) + DIST
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ENDIF
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IF (VIDEO) THEN
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CALL RPLOTL (MXND, XN, YN, ZN, NXL, XMIN, XMAX,
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& YMIN, YMAX, ZMIN, ZMAX, LLL, DEV1, KREG)
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CALL SNAPIT (3)
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ENDIF
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CALL FILSMO (MXND, MLN, XN, YN, ZN, LXK, KXL, NXL,
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& LXN, LLL, NNN, NNN, LNODES, BNSIZE, NLOOP, XMIN,
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& XMAX, YMIN, YMAX, ZMIN, ZMAX, DEV1, KREG)
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IF ((GRAPH) .OR. (VIDEO)) THEN
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CALL RPLOTL (MXND, XN, YN, ZN, NXL, XMIN, XMAX,
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& YMIN, YMAX, ZMIN, ZMAX, LLL, DEV1, KREG)
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IF (VIDEO) CALL SNAPIT (3)
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ENDIF
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DONE = .FALSE.
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REDO = .TRUE.
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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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130 CONTINUE
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IF (REDO) GOTO 100
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140 CONTINUE
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RETURN
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END
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