shell_surface_buffer.F

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!||====================================================================
!||    shell_surface_buffer   ../starter/source/model/sets/shell_surface_buffer.F
!||--- called by ------------------------------------------------------
!||    surface_buffer         ../starter/source/model/sets/surface_buffer.F
!||--- uses       -----------------------------------------------------
!||====================================================================
      SUBROUTINE shell_surface_buffer(
     .                   IX     ,NIX      ,NIX1      ,NIX2      ,IELTYP,
     .                   NSEG   ,IAD_SURF ,OPT_O     ,BUFTMPSURF,CLAUSE)
C-----------------------------------------------
C   M o d u l e s
C-----------------------------------------------
      USE setdef_mod
C-----------------------------------------------
C   I m p l i c i t   T y p e s
C-----------------------------------------------
#include      "implicit_f.inc"
C-----------------------------------------------
C   D u m m y   A r g u m e n t s
C-----------------------------------------------
      INTEGER NIX,NIX1,NIX2,IELTYP,NSEG,IAD_SURF,OPT_O
      INTEGER IX(NIX,*),BUFTMPSURF(*)
!
      TYPE (SET_) :: CLAUSE
C-----------------------------------------------
C   L o c a l   V a r i a b l e s
C-----------------------------------------------
      INTEGER J,JJ,K,INV4(4),INV3(3),NODE(4),NELEM
      DATA INV4/4,3,2,1/
      DATA inv3/3,2,1/
C=======================================================================
!     ! SURF segments
      nelem = 0
      IF (ieltyp == 3) nelem = clause%NB_SH4N
      IF (ieltyp == 7) nelem = clause%NB_SH3N
!
      DO j=1,nelem
        jj = -huge(jj)
        IF(ieltyp==3) jj = clause%SH4N(j)
        IF(ieltyp==7) jj = clause%SH3N(j)
!
        nseg=nseg+1                           
!
        IF ( opt_o == 0 ) THEN ! no normal reversed
          DO k=nix1,nix2
            node(k-1) = ix(k,jj)
          ENDDO
        ELSE ! reversed normal
          IF (nix2-nix1 == 2) THEN  ! SH3N (NOD4 == NOD3)
            DO k=nix2,nix1,-1
              node(inv4(k-1)-1) = ix(k,jj)
            ENDDO
          ELSE
            DO k=nix2,nix1,-1
              node(inv4(k-1)) = ix(k,jj)
            ENDDO
          ENDIF
        ENDIF ! IF ( OPT_O == 0 )
!
        DO k=nix1,nix2                      
          buftmpsurf(iad_surf) = node(k-1)
          iad_surf=iad_surf+1
        ENDDO
!
        IF (nix2-nix1 == 2) THEN  ! SH3N (NOD4 == NOD3)
          buftmpsurf(iad_surf) = buftmpsurf(iad_surf-1)
          iad_surf=iad_surf+1
        ENDIF
!
        buftmpsurf(iad_surf) = ieltyp
        iad_surf=iad_surf+1
        buftmpsurf(iad_surf) = jj
        iad_surf=iad_surf+1
      ENDDO ! DO J=1,NELEM
C-----------
      RETURN
      END