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99 lines
3.3 KiB
99 lines
3.3 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 SURF3D (LENSC, NLNKSC, LINKSC, IF2ESC,
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& LENF, NLNKF, LINKF, IF2EL, IF2EL2, NFACES, LENLNK)
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C=======================================================================
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C --*** SURF3D *** (MESH) Group 3D faces
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C -- Written by Amy Gilkey - revised 03/29/88
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C --
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C --SURF3D groups all the faces in the 3D mesh into one of the
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C --following parts:
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C -- n) Surface faces of element block n
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C -- NELBLK+1) Interior faces
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C --
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C --Parameters:
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C -- LENSC - IN - the cumulative face counts by element block for LINKSC
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C -- NLNKSC - IN - the number of nodes per face for LINKSC
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C -- LINKSC - IN - the unsorted connectivity for all faces
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C -- IF2ESC - IN - the element number of each face in LINKSC;
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C -- IF2ESC(2,x) = 0 iff surface face
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C -- IF2ESC(2,x) > 0 iff interior face
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C -- IF2ESC(2,x) < 0 iff duplicate interior face
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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 -- IF2EL2 - OUT - the secondary 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 NUMEL, 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 LENSC(0:NELBLK)
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INTEGER NLNKSC(NELBLK)
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INTEGER LINKSC(*)
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INTEGER IF2ESC(NDIM-1,*)
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INTEGER LENF(0:NELBLK+4)
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INTEGER NLNKF(NELBLK)
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INTEGER LINKF(*)
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INTEGER IF2EL(*), IF2EL2(*)
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C --Move surface faces into appropriate element block
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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) = NLNKSC(IELB)
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DO 100 IFAC = LENSC(IELB-1)+1, LENSC(IELB)
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IF (IF2ESC(2,IFAC) .EQ. 0) THEN
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IXS = IDBLNK (IELB, IFAC, LENSC, NLNKSC)
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NFACES = NFACES + 1
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CALL CPYINT (NLNKF(IELB), LINKSC(IXS), LINKF(IXL0+1))
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IF2EL(NFACES) = IF2ESC(1,IFAC)
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IF2EL2(NFACES) = 0
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IXL0 = IXL0 + NLNKF(IELB)
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END IF
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100 CONTINUE
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LENF(IELB) = NFACES
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110 CONTINUE
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C --Move interior faces
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DO 130 IELB = 1, NELBLK
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DO 120 IFAC = LENSC(IELB-1)+1, LENSC(IELB)
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IF (IF2ESC(2,IFAC) .GT. 0) THEN
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NFACES = NFACES + 1
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IXS = IDBLNK (IELB, IFAC, LENSC, NLNKSC)
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CALL CPYINT (NLNKSC(IELB), LINKSC(IXS), LINKF(IXL0+1))
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IF2EL(NFACES) = IF2ESC(1,IFAC)
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IF2EL2(NFACES) = IF2ESC(2,IFAC)
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IXL0 = IXL0 + NLNKF(IELB)
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END IF
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120 CONTINUE
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130 CONTINUE
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LENF(NELBLK+1) = NFACES
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LENF(NELBLK+2) = NFACES
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LENF(NELBLK+3) = NFACES
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LENF(NELBLK+4) = NFACES
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LENLNK = IXL0
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RETURN
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END
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