c3evec3.F

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!||====================================================================
!||    c3evec3          ../starter/source/elements/sh3n/coque3n/c3evec3.F
!||--- called by ------------------------------------------------------
!||    c3epsini         ../starter/source/elements/sh3n/coque3n/c3epsini.F
!||    c3fint_reg_ini   ../starter/source/elements/sh3n/coque3n/c3fint_reg_ini.F
!||    c3init3          ../starter/source/elements/sh3n/coque3n/c3init3.F
!||    cdkinit3         ../starter/source/elements/sh3n/coquedk/cdkinit3.F
!||    fsigtini         ../starter/source/constraints/fxbody/fsigtini.F
!||    inirig_mat       ../starter/source/elements/initia/inirig_mat.F
!||    inivoid          ../starter/source/elements/initia/inivoid.F
!||====================================================================
      SUBROUTINE c3evec3(JFT ,JLT ,AREA,
     .                   X1  ,X2  ,X3  ,Y1  ,Y2  ,Y3  ,
     .                   Z1  ,Z2  ,Z3  ,E1X ,E2X ,E3X ,
     .                   E1Y ,E2Y ,E3Y ,E1Z ,E2Z ,E3Z ,
     .                   X31 ,Y31 ,Z31 ,X2L ,X3L ,Y3L )
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   D u m m y   A r g u m e n t s
C-----------------------------------------------
      INTEGER JFT, JLT
      my_real X1(MVSIZ), X2(MVSIZ), X3(MVSIZ),
     .        Y1(MVSIZ), Y2(MVSIZ), Y3(MVSIZ),
     .        Z1(MVSIZ), Z2(MVSIZ), Z3(MVSIZ),
     .        e1x(mvsiz), e1y(mvsiz), e1z(mvsiz),
     .        e2x(mvsiz), e2y(mvsiz), e2z(mvsiz),
     .        e3x(mvsiz), e3y(mvsiz), e3z(mvsiz),
     .        x31(mvsiz), y31(mvsiz), z31(mvsiz),
     .        x32(mvsiz), y32(mvsiz), z32(mvsiz),
     .        x21(mvsiz), y21(mvsiz), z21(mvsiz), area(mvsiz),
     .        x2l(mvsiz), x3l(mvsiz), y3l(mvsiz)
C-----------------------------------------------
      INTEGER I
      my_real SUM
C-----------------------------------------------
      DO I=jft,jlt
        x21(i)=x2(i)-x1(i)
        y21(i)=y2(i)-y1(i)
        z21(i)=z2(i)-z1(i)
        x31(i)=x3(i)-x1(i)
        y31(i)=y3(i)-y1(i)
        z31(i)=z3(i)-z1(i)
        x32(i)=x3(i)-x2(i)
        y32(i)=y3(i)-y2(i)
        z32(i)=z3(i)-z2(i)
      ENDDO
C
      DO i=jft,jlt
        e1x(i)= x21(i)
        e1y(i)= y21(i)
        e1z(i)= z21(i)
        x2l(i) = sqrt(e1x(i)*e1x(i)+e1y(i)*e1y(i)+e1z(i)*e1z(i))
        e1x(i)=e1x(i)/x2l(i)
        e1y(i)=e1y(i)/x2l(i)
        e1z(i)=e1z(i)/x2l(i)
      ENDDO
C
      DO i=jft,jlt
        e3x(i)=y31(i)*z32(i)-z31(i)*y32(i)
        e3y(i)=z31(i)*x32(i)-x31(i)*z32(i)
        e3z(i)=x31(i)*y32(i)-y31(i)*x32(i)
        sum = sqrt(e3x(i)*e3x(i)+e3y(i)*e3y(i)+e3z(i)*e3z(i))
        e3x(i)=e3x(i)/sum
        e3y(i)=e3y(i)/sum
        e3z(i)=e3z(i)/sum
        area(i) = half * sum
      ENDDO
C
      DO i=jft,jlt
        e2x(i)=e3y(i)*e1z(i)-e3z(i)*e1y(i)
        e2y(i)=e3z(i)*e1x(i)-e3x(i)*e1z(i)
        e2z(i)=e3x(i)*e1y(i)-e3y(i)*e1x(i)
        sum = sqrt(e2x(i)*e2x(i)+e2y(i)*e2y(i)+e2z(i)*e2z(i))
        e2x(i)=e2x(i)/sum
        e2y(i)=e2y(i)/sum
        e2z(i)=e2z(i)/sum
        y3l(i)=e2x(i)*x31(i)+e2y(i)*y31(i)+e2z(i)*z31(i)
        x3l(i)=e1x(i)*x31(i)+e1y(i)*y31(i)+e1z(i)*z31(i)
      ENDDO
C-----------
      RETURN
      END