c3be3.F

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!||====================================================================
!||    c3be3   ../engine/source/elements/sh3n/coque3n/c3be3.F
!||--- called by ------------------------------------------------------
!||    c3ke3   ../engine/source/elements/sh3n/coque3n/c3ke3.F
!||====================================================================
      SUBROUTINE c3be3(JFT,JLT,PX1,PY1,PY2 ,
     1                   X2 ,X3 , Y3 , AREA)
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 JFT, JLT
      my_real px1(*), py1(*), py2(*), x2(*),x3(*), y3(*),area(*)
C-----------------------------------------------
C   L o c a l   V a r i a b l e s
C-----------------------------------------------
      INTEGER I
      my_real ai   
C-----------------------------------------------
C--px2=-px1;px3=0;py3=-py1-py2---
      DO i=jft,jlt
       ai = half/max(area(i),em20)
       px1(i)=-ai*y3(i)
       py1(i)= ai*(x3(i)-x2(i))
       py2(i)=-ai*x3(i)      
      ENDDO
C---------------------------------------------------------
      RETURN
C
      END