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73 lines
2.2 KiB
73 lines
2.2 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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C=======================================================================
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SUBROUTINE MAKSUR (LENF, NLNKF, LINKF, DODEAD, IDN2B, NPSURF)
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C=======================================================================
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C --*** MAKSUR *** (MESH) Determine which nodes are on surface
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C -- Written by Amy Gilkey - revised 03/10/88
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C --
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C --MAKSUR calculates the nodes-on-surface indicator (NPSURF).
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C --
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C --Parameters:
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C -- LENF - IN - the cumulative face counts by element block
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C -- NLNKF - IN - the number of nodes per face
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C -- LINKF - IN - the connectivity for all faces
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C -- DODEAD - IN - add in dead nodes from IDN2B iff true
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C -- IDN2B - IN - the element block for each dead node; dead if >= 0
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C -- NPSURF - OUT - the node numbers of the surface nodes
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C --
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C --Common Variables:
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C -- Uses NDIM, NELBLK of /DBNUMS/
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C -- Sets NNPSUR, NUMNPF of /D3NUMS/
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include 'dbnums.blk'
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COMMON /D3NUMS/ IS3DIM, NNPSUR, NUMNPF, LLNSET
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LOGICAL IS3DIM
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INTEGER LENF(0:NELBLK+2)
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INTEGER NLNKF(NELBLK)
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INTEGER LINKF(*)
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LOGICAL DODEAD
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INTEGER IDN2B(NUMNPF)
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INTEGER NPSURF(*)
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CALL INIINT (NUMNPF, 0, NPSURF)
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C --Mark all nodes that are in surface faces
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DO 120 IELB = 1, NELBLK
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IXL0 = IDBLNK (IELB, 0, LENF, NLNKF) - 1
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DO 110 IFAC = LENF(IELB-1)+1, LENF(IELB)
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DO 100 K = 1, NLNKF(IELB)
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NPSURF(LINKF(IXL0+K)) = 1
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100 CONTINUE
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IXL0 = IXL0 + NLNKF(IELB)
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110 CONTINUE
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120 CONTINUE
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C --Add in dead nodes
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IF (DODEAD) THEN
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DO 130 INP = 1, NUMNPF
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IF (IDN2B(INP) .GE. 0) NPSURF(INP) = 1
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130 CONTINUE
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END IF
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C --Make up the list of surface nodes
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NNPSUR = 0
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DO 140 INP = 1, NUMNPF
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IF (NPSURF(INP) .GT. 0) THEN
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NNPSUR = NNPSUR + 1
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NPSURF(NNPSUR) = INP
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END IF
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140 CONTINUE
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RETURN
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END
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