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64 lines
1.8 KiB
64 lines
1.8 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 GMDIS2 (COORD, DIRCOS, MASSLV, NIQSLV, TDIS,
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* NIQM, NIQS, DMAX, NUMNP)
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DIMENSION COORD (NUMNP,*), DIRCOS(4,*), MASSLV(2,*), NIQSLV(*),
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* TDIS(3,*)
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C... PICK MATCH BASED ON CLOSEST DISTANCE
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DO 30 IMAS = 1, NIQM
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X1 = COORD (MASSLV(1, IMAS),1)
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Y1 = COORD (MASSLV(1, IMAS),2)
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DO 10 ISLV = 1, NIQS
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X0 = COORD (NIQSLV(ISLV),1)
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Y0 = COORD (NIQSLV(ISLV),2)
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TDIS(3,ISLV) = (X0 - X1)**2 + (Y0 - Y1)**2
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10 CONTINUE
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TMIN = DMAX
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NMIN = 0
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DO 20 ISLV = 1, NIQS
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IF (TDIS(3,ISLV) .LE. TMIN) THEN
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TMIN = TDIS(3,ISLV)
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NMIN = ISLV
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END IF
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20 CONTINUE
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IF (NMIN .NE. 0) THEN
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MASSLV(2,IMAS) = NIQSLV(NMIN)
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DIRCOS(4,IMAS) = TDIS(3,NMIN)
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ELSE
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MASSLV(2,IMAS) = 0
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END IF
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30 CONTINUE
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CALL CULL2 (DIRCOS, MASSLV, NIQM)
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C ... INITIALIZE TANGENT AND NORMAL DISTANCES
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DO 40 ISEG = 1, NIQM
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X1 = COORD (MASSLV(1, ISEG),1)
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Y1 = COORD (MASSLV(1, ISEG),2)
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X0 = COORD (MASSLV(2, ISEG),1)
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Y0 = COORD (MASSLV(2, ISEG),2)
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C DIRCOS is average unit direction vector from surfaces at node
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DCS1 = DIRCOS (1, ISEG)
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DCS2 = DIRCOS (2, ISEG)
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T = -( DCS1 * (X1-X0) + DCS2 * (Y1-Y0) )
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DIRCOS(3,ISEG) = T
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DIRCOS(4,ISEG) = SQRT( ABS(DIRCOS(4,ISEG) - T**2) )
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40 CONTINUE
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RETURN
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END
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