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71 lines
2.3 KiB
71 lines
2.3 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 SURF2D (LENE, NLNKE, LINKE,
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& LENF, NLNKF, LINKF, IF2EL, NFACES, LENLNK)
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C=======================================================================
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C --*** SURF2D *** (MESH) Group 2D faces
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C -- Written by Amy Gilkey - revised 11/04/87
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C --
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C --SURF2D packs the elements by element block, eliminating empty elements.
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C --
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C --Parameters:
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C -- LENE - IN - the cumulative element counts by element block
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C -- NLNKE - IN - the number of nodes per element
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C -- LINKE - IN - the original connectivity; connectivity all zero
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C -- if element is undefined
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C -- LENF - OUT - the cumulative face counts by element block
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C -- NLNKF - OUT - the number of nodes per face
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C -- LINKF - OUT - the connectivity for all faces
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C -- IF2EL - OUT - the element number of each face
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C -- NFACES - OUT - the number of returned faces
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C -- LENLNK - OUT - the length of the returned LINKF array
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C --
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C --Common Variables:
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C -- Uses NELBLK of /DBNUMS/
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common /debugc/ cdebug
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common /debugn/ idebug
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character*8 cdebug
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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 LENE(0:NELBLK), LINKE(*)
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INTEGER NLNKE(NELBLK)
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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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INTEGER IF2EL(*)
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LENF(0) = 0
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NFACES = 0
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IXL0 = 0
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DO 110 IELB = 1, NELBLK
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NLNKF(IELB) = NLNKE(IELB)
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IXE0 = IDBLNK (IELB, 0, LENE, NLNKE) - 1
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DO 100 IEL = LENE(IELB-1)+1, LENE(IELB)
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IF (LINKE(IXE0+1) .NE. 0) THEN
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NFACES = NFACES + 1
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CALL CPYINT (NLNKF(IELB), LINKE(IXE0+1), LINKF(IXL0+1))
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IF2EL(NFACES) = IEL
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IXL0 = IXL0 + NLNKF(IELB)
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END IF
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IXE0 = IXE0 + NLNKE(IELB)
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100 CONTINUE
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LENF(IELB) = NFACES
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110 CONTINUE
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LENF(NELBLK+1) = NFACES
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LENF(NELBLK+2) = NFACES
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LENLNK = IXL0
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RETURN
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END
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