fvelarea.F

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!||====================================================================
!||    fvelarea   ../starter/source/airbag/fvelarea.F
!||--- called by ------------------------------------------------------
!||    fvmesh0    ../starter/source/airbag/fvmesh0.F
!||--- calls      -----------------------------------------------------
!||    fvnormal   ../starter/source/airbag/fvmbag1.F
!||====================================================================
      SUBROUTINE fvelarea(IBUF,   ELEM,      X,    NEL,
     .                    ELAREA )
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      "com04_c.inc"
C-----------------------------------------------
C   D u m m y   A r g u m e n t s
C-----------------------------------------------
      INTEGER IBUF(*), ELEM(3,*) 
      INTEGER NEL
      my_real
     .        x(3,numnod), elarea(*)
C-----------------------------------------------
C   L o c a l   V a r i a b l e s
C-----------------------------------------------
      INTEGER IEL, N1, N2, N3, NN1, NN2, NN3
      my_real
     .        nrx, nry, nrz, area2
 
C--------------------------------------------------
      DO iel=1,nel
         n1=elem(1,iel)
         n2=elem(2,iel)
         n3=elem(3,iel)
         nn1=ibuf(n1)
         nn2=ibuf(n2)
         nn3=ibuf(n3)
         CALL fvnormal(x,nn1,nn2,nn3,0,nrx,nry,nrz)
         area2=sqrt(nrx**2+nry**2+nrz**2)
         elarea(iel)=half*area2
      ENDDO
C     
      RETURN
      END