scortho3.F

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!||====================================================================
!||    scortho3   ../engine/source/elements/thickshell/solidec/scortho3.F
!||--- called by ------------------------------------------------------
!||    srcoor3    ../engine/source/elements/solid/solide/srcoor3.F
!||    srcoork    ../engine/source/elements/solid/solide8z/srcoork.F
!||    srep2glo   ../engine/source/elements/sph/srep2glo.F
!||    tsh_dir2   ../engine/source/output/h3d/h3d_results/h3d_skin_tensor.F
!||====================================================================
      SUBROUTINE scortho3(
     1   RX,      RY,      RZ,      SX,
     2   SY,      SZ,      TX,      TY,
     3   TZ,      E1X,     E2X,     E3X,
     4   E1Y,     E2Y,     E3Y,     E1Z,
     5   E2Z,     E3Z,     NEL)
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, INTENT(IN) :: NEL
C     REAL
      my_real, INTENT(IN),  DIMENSION(MVSIZ) ::
     .   RX, RY, RZ, SX, SY, SZ, TX, TY, TZ
      my_real, INTENT(OUT), DIMENSION(MVSIZ) ::
     .   e1x, e1y, e1z, e2x, e2y, e2z, e3x, e3y, e3z
C-----------------------------------------------
C   C o m m o n   B l o c k s
C-----------------------------------------------
C-----------------------------------------------
C   L o c a l   V a r i a b l e s
C-----------------------------------------------
      INTEGER I
C     REAL
      my_real
     .   DET,C1,C2 
C-----------------------------------------------
      DO 100 i=1,nel
C
       e3x(i) = ty(i) * rz(i) - tz(i) * ry(i) 
       e3y(i) = tz(i) * rx(i) - tx(i) * rz(i) 
       e3z(i) = tx(i) * ry(i) - ty(i) * rx(i) 
C
       det = sqrt(e3x(i)*e3x(i) + e3y(i)*e3y(i) + e3z(i)*e3z(i))
       IF ( det/=zero) det = one / det
       e3x(i) = e3x(i) * det
       e3y(i) = e3y(i) * det
       e3z(i) = e3z(i) * det
C
       c1=sqrt(tx(i)*tx(i)+ty(i)*ty(i)+tz(i)*tz(i))
       c2=sqrt(rx(i)*rx(i)+ry(i)*ry(i)+rz(i)*rz(i))
       e1x(i)=tx(i)*c2 +(ry(i) * e3z(i) - rz(i) * e3y(i))*c1  
       e1y(i)=ty(i)*c2 +(rz(i) * e3x(i) - rx(i) * e3z(i))*c1  
       e1z(i)=tz(i)*c2 +(rx(i) * e3y(i) - ry(i) * e3x(i))*c1
       det = sqrt(e1x(i)*e1x(i) + e1y(i)*e1y(i) + e1z(i)*e1z(i))
       IF ( det/=zero) det = one / det
       e1x(i) = e1x(i)*det
       e1y(i) = e1y(i)*det
       e1z(i) = e1z(i)*det
C
       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)
 100  CONTINUE
c~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      RETURN
      END