r1coork3.F

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!||====================================================================
!||    r1coork3     ../engine/source/elements/spring/r1coork3.F
!||--- called by ------------------------------------------------------
!||    r4ke3        ../engine/source/elements/spring/r4ke3.F
!||    ruser32ke3   ../engine/source/elements/spring/ruser32ke3.F
!||====================================================================
      SUBROUTINE r1coork3(JFT    ,JLT    ,X      ,NCC   ,PID    ,
     1                    NGL    ,AL     ,R11    ,R21   ,R31    ,
     2                    OFFG   ,OFF    )
C-----------------------------------------------
C   I m p l i c i t   T y p e s
C-----------------------------------------------
#include      "implicit_f.inc"
C-----------------------------------------------
C   G l o b a l   P a r a m e t e r s
C-----------------------------------------------
#include      "mvsiz_p.inc"
C-----------------------------------------------
C   C o m m o n   B l o c k s
C-----------------------------------------------
#include      "impl1_c.inc"
#include      "comlock.inc"
#include      "units_c.inc"
#include      "scr17_c.inc"
C-----------------------------------------------
C   D u m m y   A r g u m e n t s
C-----------------------------------------------
      INTEGER JFT, JLT 
      INTEGER NCC(NIXR,*),PID(*),NGL(*)
C     REAL
      my_real
     .   x(3,*),al(*),
     .   r11(*),r21(*),r31(*),offg(*)   ,off(*)
C-----------------------------------------------
C   L o c a l   V a r i a b l e s
C-----------------------------------------------
      INTEGER I, J,NC1(MVSIZ),NC2(MVSIZ)
C     REAL
      my_real
     .   x1(mvsiz), x2(mvsiz),y1(mvsiz), y2(mvsiz),  
     .   z1(mvsiz), z2(mvsiz), norm
C-----------------------------------------------
C
      DO i=jft, jlt
       pid(i)=ncc(1,i)
       ngl(i)=ncc(5,i)
       nc1(i)=ncc(2,i)
       nc2(i)=ncc(3,i)
      ENDDO 
C----------------------------
C     COORDONNEES
C----------------------------
      DO i=jft, jlt
       x1(i)=x(1,nc1(i))
       y1(i)=x(2,nc1(i))
       z1(i)=x(3,nc1(i))
       x2(i)=x(1,nc2(i))
       y2(i)=x(2,nc2(i))
       z2(i)=x(3,nc2(i))
      ENDDO 
C----------------------------
C     LOCAL SYSTEM
C----------------------------
      DO  i=jft, jlt
       r11(i)=one
       r21(i)=zero
       r31(i)=zero
      ENDDO 
      DO  i=jft, jlt
       r11(i)=x2(i)-x1(i)
       r21(i)=y2(i)-y1(i)
       r31(i)=z2(i)-z1(i)
       al(i)=sqrt(r11(i)*r11(i)+r21(i)*r21(i)+r31(i)*r31(i))
       al(i)=max(em14,al(i))
      ENDDO 
      IF (imp_chk > 0) THEN
       DO i=jft,jlt
        IF(offg(i)/=zero)THEN
         IF(al(i)<=em14)THEN
#include "lockon.inc"
            WRITE(iout ,2001) ngl(i)
#include "lockoff.inc"
            idel7nok = 1
            imp_iw = imp_iw + 1
         ENDIF 
        ENDIF 
       ENDDO
      ENDIF 
C
      DO i=jft, jlt
       IF (al(i)>em14) THEN
        norm=one/al(i)
        r11(i)=r11(i)*norm
        r21(i)=r21(i)*norm
        r31(i)=r31(i)*norm
       ENDIF 
      ENDDO 
      DO i=jft,jlt
       off(i)=offg(i)
      ENDDO
C
      RETURN
 2001 FORMAT(/'***WARNING :SPRING TYPE4 ZERO-LENGTH : ELEMENT NB:',
     .          i8/)
      END