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!Environment Canada - Atmospheric Science and Technology License/Disclaimer, 
!                     version 3; Last Modified: May 7, 2008.
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***s/r v4d_nest_blen_ad - ADJ of v4d_nest_blen
*
#include "model_macros_f.h"
*

      subroutine v4d_nest_blen_ad () 1,6
*
      implicit none
*
*author
*     M. Tanguay
*
*revision
* v3_31 - Tanguay M.      - initial version
* v3_31 - Tanguay M.      - Control BC
*
*object
*     see id section
*
*arguments
*     none
*
*implicits
#include "glb_ld.cdk"
#include "vt1.cdk"
#include "nest.cdk"
#include "tr3d.cdk"
#include "schm.cdk"
#include "hblen.cdk"
*
      integer  vmmlod,vmmget,vmmuld
      external vmmlod,vmmget,vmmuld
*
      integer err,key(26),i,j,k,nvar
      integer key1(Tr3d_ntr),key1_,key2(Tr3d_ntr),key2_, n
      real tr,tr1
      pointer (patr, tr(LDIST_SHAPE,*)),(patr1,tr1(LDIST_SHAPE,*))
*----------------------------------------------------------------------
*
      if (.not. Schm_hydro_L) call gem_stop ('STOP in V4D_NEST_BLEN_AD',-1)
*
      if ( (north+south+west+east.lt.1) .or.
     $    ((Hblen_x.le.0).and.(Hblen_y.le.0)) ) return
*
      key2_ = VMM_KEY (nest_tr)
      key1_ = VMM_KEY (trt1)
      do n=1,Tr3d_ntr
         key2(n) = key2_ + n
         key1(n) = key1_ + n
      end do
      if (Tr3d_ntr.gt.0) then
         err = vmmlod(key2,Tr3d_ntr)
         err = vmmlod(key1,Tr3d_ntr)
         do n=1,Tr3d_ntr
            err = vmmget(key2(n),patr,tr)
            err = vmmget(key1(n),patr1,tr1)
            call nesajr_ad (tr1, tr, LDIST_DIM,G_nk,0,0,Hblen_x,Hblen_y)
         enddo
         err = vmmuld(key1,Tr3d_ntr)
         err = vmmuld(key2,Tr3d_ntr)
      endif
*
      key(1)=VMM_KEY(nest_u)
      key(2)=VMM_KEY(nest_v)
      key(3)=VMM_KEY(nest_s)
      key(4)=VMM_KEY(nest_tp)
      key(5)=VMM_KEY(ut1)
      key(6)=VMM_KEY(vt1)
      key(7)=VMM_KEY(st1)
      key(8)=VMM_KEY(tpt1)
*
      nvar = 8
*
      err = vmmlod(key,nvar)
*
      err = VMM_GET_VAR(nest_u)
      err = VMM_GET_VAR(nest_v)
      err = VMM_GET_VAR(nest_s)
      err = VMM_GET_VAR(nest_tp)
      err = VMM_GET_VAR(ut1)
      err = VMM_GET_VAR(vt1)
      err = VMM_GET_VAR(st1)
      err = VMM_GET_VAR(tpt1)
*
*     ADJ of
*     Set up blending zones
*     ---------------------
      call nesajr_ad (st1  ,nest_s  ,LDIST_DIM,   1 ,0,0,Hblen_x,Hblen_y)
      call nesajr_ad (tpt1 ,nest_tp ,LDIST_DIM,G_nk ,0,0,Hblen_x,Hblen_y)
      call nesajr_ad (vt1  ,nest_v  ,LDIST_DIM,G_nk ,0,1,Hblen_x,Hblen_y)
      call nesajr_ad (ut1  ,nest_u  ,LDIST_DIM,G_nk ,1,0,Hblen_x,Hblen_y)
*
      err = vmmuld(key,nvar)
*
*----------------------------------------------------------------------
      return
      end