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178 lines
6.0 KiB
178 lines
6.0 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 FACE3D (A, LENE, NLNKE, LINKE,
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& NFACES, LENLNK, LENSC, NLNKSC, LINKSC, IF2ESC, NAMELB)
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C=======================================================================
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C --*** FACE3D *** (MESH) Break 3D elements into faces
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C -- Written by Amy Gilkey - revised 03/29/88
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C -- Sam Key, 04/85
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C --
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C --FACE3D finds all the faces in the 3D mesh.
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C --
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C --Dynamic memory is manipulated by the routine and should be checked
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C --for errors after call.
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C --
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C --Parameters:
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C -- A - IN - the dynamic memory base array
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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 -- NFACES - OUT - returned number of non-duplicate faces
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C -- LENLNK - OUT - the length of the face connectivity array without
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C -- duplicates
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C -- LENSC - OUT - the cumulative face counts by element block
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C -- NLNKSC - OUT - the number of nodes per face
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C -- LINKSC - OUT - the face connectivity
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C -- IF2ESC - OUT - the element number(s) of each face in LINKSC;
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C -- size = 2*NFACES
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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 --
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C --Common Variables:
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C -- Uses NUMNP, 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 'params.blk'
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include 'dbnums.blk'
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include 'd3nums.blk'
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include 'minmax.blk'
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DIMENSION A(*)
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INTEGER LENE(0:NELBLK), LINKE(*)
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INTEGER NLNKE(NELBLK)
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INTEGER LENSC(0:NELBLK), LINKSC(*)
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INTEGER NLNKSC(NELBLK)
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INTEGER IF2ESC(2,*)
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CHARACTER*(MXSTLN) NAMELB(*)
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logical hastet
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INTEGER NPFRAT(8)
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SAVE NPFRAT
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C --NPFRAT(i) is the maximum number of faces that a node can be
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C in if the number of elements that the node is in = i
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C NOTE: Will fail for collapsed hexes...
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C For i <= 4, assumes possible strange connections, for
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C i > 4, assumes a somewhat regular connectivity
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DATA NPFRAT / 3, 6, 9, 12, 12, 12, 12, 12 /
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C --Reserve storage for node-to-face pointers
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C --MAXNPF is the maximum number of faces with a given node
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C --that are unmatched as the face matching routine is executed
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CALL MDRSRV ('NFPN', KNFPN, 1+NUMNP)
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CALL MDSTAT (NERR, MEM)
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IF (NERR .GT. 0) GOTO 150
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CALL INIINT (1+NUMNP, 0, A(KNFPN))
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MAXEPN = 0
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HASTET = .FALSE.
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DO 100 IELB = 1, NELBLK
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IXL = IDBLNK (IELB, 0, LENE, NLNKE)
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NUME = LENE(IELB) - LENE(IELB-1)
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CALL MXEPN (NUME, NLNKE(IELB), LINKE(IXL), A(KNFPN))
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if (namelb(ielb)(:3) .eq. 'TET') hastet = .true.
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100 CONTINUE
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MAXEPN = MXEPNMX(A(KNFPN))
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C ... NOTE: I think this needs to be fixed for tet elements.
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IF (MAXEPN .LE. 8) THEN
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MAXNPF = NPFRAT(MAXEPN)
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ELSE
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if (hastet) then
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C ... Not sure whether this is the correct number or not...
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MAXNPF = MAXEPN * 3
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else
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MAXNPF = (MAXEPN * 3) / 2
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end if
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END IF
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CALL MDDEL ('NFPN')
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CALL MDRSRV ('NPFS', KNPFS, (1+MAXNPF) * NUMNP)
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CALL MDSTAT (NERR, MEM)
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IF (NERR .GT. 0) GOTO 150
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C --Find all faces, matching faces in same element block
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LENSC(0) = 0
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IXL = 1
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minnod = 1
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maxnod = numnp
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DO 110 IELB = 1, NELBLK
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IXE = IDBLNK (IELB, 0, LENE, NLNKE)
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NUME = LENE(IELB) - LENE(IELB-1)
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CALL FACELB (IELB, LENE, NLNKE(IELB), LINKE(IXE),
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& NLNKSC(IELB), LINKSC(IXL), IF2ESC(1,LENSC(IELB-1)+1),
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& MAXNPF, A(KNPFS), NFELB, NAMELB(IELB))
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LENSC(IELB) = LENSC(IELB-1) + NFELB
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IXL = IXL + NLNKSC(IELB) * NFELB
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110 CONTINUE
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NFACES = LENSC(NELBLK)
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LENLNK = IXL - 1
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C --Match faces in different element blocks
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NOVER = 0
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minnod = 1
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maxnod = numnp
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DO 140 IELBLK = 1, NELBLK
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if (nlnksc(ielblk) .ge. 4) then
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CALL ININPF (minnod, maxnod, MAXNPF, A(KNPFS))
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minnod = numnp
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maxnod = 1
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DO 130 IELB = IELBLK, NELBLK
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IF ((NLNKSC(IELB) .EQ. NLNKSC(IELBLK))
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& .AND. (NAMELB(IELB)(:3) .NE. 'SHE')
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$ .AND. (NAMELB(IELB) .EQ. NAMELB(IELBLK))) THEN
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IXL = IDBLNK (IELB, 0, LENSC, NLNKSC)
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DO 120 IFAC = LENSC(IELB-1)+1, LENSC(IELB)
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IF (IF2ESC(2,IFAC) .EQ. 0) THEN
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IF (IELB .NE. IELBLK) THEN
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if (NAMELB(IELB)(:3) .eq. 'TET') THEN
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IMATCH = MATFAT
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$ (LINKSC(IXL), MAXNPF, A(KNPFS),
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$ IF2ESC(1,IFAC), numnp, IERR)
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ELSE
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IMATCH = MATFAC
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& (LINKSC(IXL), MAXNPF, A(KNPFS),
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* IF2ESC(1,IFAC), numnp, IERR)
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END IF
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ELSE
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IMATCH = 0
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END IF
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IF (IMATCH .GT. 0) THEN
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NFACES = NFACES - 1
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LENLNK = LENLNK - NLNKSC(IELB)
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IF2ESC(2,IMATCH) = IF2ESC(1,IFAC)
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IF2ESC(1,IFAC) = -999
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IF2ESC(2,IFAC) = -999
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ELSE
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CALL FILNPF (NLNKSC(IELB), LINKSC(IXL), IFAC,
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& MAXNPF, A(KNPFS), NOVER, numnp)
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END IF
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END IF
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IXL = IXL + NLNKSC(IELB)
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120 CONTINUE
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END IF
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130 CONTINUE
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end if
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140 CONTINUE
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CALL MDDEL ('NPFS')
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150 CONTINUE
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RETURN
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END
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