r2buf3.F

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C
!||====================================================================
!||    r2buf3   ../starter/source/elements/spring/r2buf3.F
!||--- called by ------------------------------------------------------
!||    rinit3   ../starter/source/elements/spring/rinit3.F
!||====================================================================
      SUBROUTINE r2buf3(OFF  ,GEO   ,X     ,X0    ,Y0   ,
     2                  Z0   ,IX    ,SKEW  ,IPOSX ,IPOSY,
     3                  IPOSZ,IPOSXX,IPOSYY,IPOSZZ,IGEO,
     4                  SKEW_ID)
C-----------------------------------------------
C   I m p l i c i t   T y p e s
C-----------------------------------------------
#include      "implicit_f.inc"
C-----------------------------------------------
C   C o m m o n   B l o c k s
C-----------------------------------------------
#include      "vect01_c.inc"
#include      "param_c.inc"
C-----------------------------------------------
C   D u m m y   A r g u m e n t s
C-----------------------------------------------
      INTEGER IX(NIXR,*),IGEO(NPROPGI,*),SKEW_ID(*)
C     REAL
      my_real
     .   off(*), geo(npropg,*), x(3,*), x0(*), y0(*), z0(*),
     .   skew(lskew,*),iposx(5,*) ,iposy(5,*),
     .   iposz(5,*),iposxx(5,*),iposyy(5,*),iposzz(5,*)
C-----------------------------------------------
C   L o c a l   V a r i a b l e s
C-----------------------------------------------
      INTEGER I, J, NG, I1, I2, ISK, K, USENS
C     REAL
      my_real
     .   x1, y1, z1, ex, ey, ez
C-----------------------------------------------
      DO i=lft,llt
        j=i+nft
        usens=igeo(3,ix(1,j))
        IF(usens<=0)THEN
C         no sensor or Isflag=1
          off(i)=one
        ELSE
          off(i)=-ten
        END IF
      ENDDO
C
      DO j=1,5
        DO i=lft,llt
          iposx(j,i)=zero
          iposy(j,i)=zero
          iposz(j,i)=zero
          iposxx(j,i)=zero
          iposyy(j,i)=zero
          iposzz(j,i)=zero
        ENDDO
      ENDDO
C
      DO i=lft,llt
        j=i+nft
        ng=ix(1,j)
        isk=skew_id(i)
        i1=ix(2,j)
        i2=ix(3,j)
        x1=x(1,i2)-x(1,i1)
        y1=x(2,i2)-x(2,i1)
        z1=x(3,i2)-x(3,i1)
        ex=skew(1,isk)
        ey=skew(2,isk)
        ez=skew(3,isk)
        x0(i)=ex*x1+ey*y1+ez*z1
        ex=skew(4,isk)
        ey=skew(5,isk)
        ez=skew(6,isk)
        y0(i)=ex*x1+ey*y1+ez*z1
        ex=skew(7,isk)
        ey=skew(8,isk)
        ez=skew(9,isk)
        z0(i)=ex*x1+ey*y1+ez*z1
      ENDDO
C-----------------------------------------------
      RETURN
      END