C COUPNO    SOURCE    PV        11/10/07    21:15:12     7164
      subroutine coupno (xmi,xma,ymi,yma,zmi,zma,coupra,coupol)
      implicit integer(i-n)
-INC SMCOORD

-INC PPARAM
-INC CCOPTIO
      dimension xtr(5),ytr(5),ztr(5)

        ISORT = 0
        IRESU = 0
        call ini(IRESU,ISORT,0,0,0,0.,0.,0.,0.)
        xz=0d0
        xd=10d0
        xv=20d0
        call dfenet(xz,xd,xz,xv,xz,xd,xz,xd,xz,xv,.false.)
        xtr(1)=2.
        xtr(2)=8.
        xtr(3)=8.
        xtr(4)=2.
        xtr(5)=xtr(1)
        ytr(1)=7.
        ytr(2)=7.
        ytr(3)=7.3
        ytr(4)=7.3
        ytr(5)=ytr(1)
        ztr(1)=0.1
        ztr(2)=0.1
        ztr(3)=0.1
        ztr(4)=0.1
        ztr(5)=0.1

        call majseg(1,0,0,0,0)
        call insegt(1,ires)
        call trmess(' <--  proche    :    lointain --> ')
        call chcoul(0)
        call polrl(5,xtr,ytr,ztr)
* indiquer la position courante
        if( coupol.ge.0.)  then
         xtr(1)=xtr(1)+ ( xtr(3)-xtr(1))*coupol- 6. / 100.
         ytr(1)= 7.05
         xtr(2)=xtr(1)+ 6. / 100.
         ytr(2)=ytr(1)
         xtr(3)=xtr(2)
         ytr(3)=7.25
         xtr(4)=xtr(1)
         ytr(4)=ytr(3)
         xtr(5)=xtr(1)
         ytr(5)=ytr(1)
         call polrl(5,xtr,ytr,ztr)
      endif
       rxpos=0.
       rypos=0.
      if( iogra.ne.6) then
         call trdig  (rxpos,rypos,inouse)
      else
        call otrdig  (rxpos,rypos,inouse)
      endif
         coupra=(rxpos-2.) / 6.
        if( coupra.le.0.) coupra=0.01
        if(coupra.ge.1.) coupra=0.99
*        write(6,*) ' coupra ',coupra
        if( coupra . lt. 0.)coupra=0.01
        if( coupra . ge . 1.) coupra = 0.99
        coupol=coupra
        return

*
        end