subroutine cur2ca(u         ,v         ,alfa      ,k         ,n         , &
                & m         )
!----- GPL ---------------------------------------------------------------------
!                                                                               
!  Copyright (C)  Stichting Deltares, 2011-2021.                                
!                                                                               
!  This program is free software: you can redistribute it and/or modify         
!  it under the terms of the GNU General Public License as published by         
!  the Free Software Foundation version 3.                                      
!                                                                               
!  This program is distributed in the hope that it will be useful,              
!  but WITHOUT ANY WARRANTY; without even the implied warranty of               
!  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the                
!  GNU General Public License for more details.                                 
!                                                                               
!  You should have received a copy of the GNU General Public License            
!  along with this program.  If not, see <http://www.gnu.org/licenses/>.        
!                                                                               
!  contact: delft3d.support@deltares.nl                                         
!  Stichting Deltares                                                           
!  P.O. Box 177                                                                 
!  2600 MH Delft, The Netherlands                                               
!                                                                               
!  All indications and logos of, and references to, "Delft3D" and "Deltares"    
!  are registered trademarks of Stichting Deltares, and remain the property of  
!  Stichting Deltares. All rights reserved.                                     
!                                                                               
!-------------------------------------------------------------------------------
!  $Id$
!  $HeadURL$
!!--description-----------------------------------------------------------------
! NONE
!!--pseudo code and references--------------------------------------------------
! NONE
!!--declarations----------------------------------------------------------------
    use precision
    implicit none
    !
    !
    ! COMMON variables
    !
    real(hp) :: facrad
    common /fr    / facrad
!
! Global variables
!
    integer, intent(in)            :: m
    integer, intent(in)            :: n
    integer, dimension(n, m), intent(in) :: k
    real(hp), dimension(n, m), intent(in) :: alfa
    real(hp), dimension(n, m) :: u
    real(hp), dimension(n, m) :: v
!
!
! Local variables
!
    integer                        :: i
    integer                        :: j
    real(hp)                       :: ang
    real(hp)                       :: ux
    real(hp)                       :: uy
!
!
!! executable statements -------------------------------------------------------
!
    !
    !
    !
    write (*, *) ' CUR2CA'
    do i = 1, m
       do j = 1, n
          if (k(j, i)==1) then
             ang = facrad*alfa(j, i)
             ux = u(j, i)*cos(ang) - v(j, i)*sin(ang)
             uy = u(j, i)*sin(ang) + v(j, i)*cos(ang)
             u(j, i) = ux
             v(j, i) = uy
          else
             u(j, i) = 0._hp
             v(j, i) = 0._hp
          endif
       enddo
    enddo
end subroutine cur2ca