evaluate_FOAG_spacetime_vectorByCoordinate Subroutine

  recursive subroutine evaluate_FOAG_spacetime_vectorByCoordinate( fun, &
    & varsys, point, time, tree, nPnts, res                             )
    !--------------------------------------------------------------------------!
    !> Description of the method to obtain the variables, here some preset
    !! values might be stored, like the space time function to use or the
    !! required variables.
    class(tem_varSys_op_type), intent(in) :: fun

    !> The variable system to obtain the variable from.
    type(tem_varSys_type), intent(in) :: varSys

    !> Three-dimensional coordinates at which the variable should be
    !! evaluated. Only useful for variables provided as space-time functions.
    real(kind=rk), intent(in) :: point(:,:)

    !> Point in time at which to evaluate the variable.
    type(tem_time_type), intent(in)  :: time

    !> global treelm mesh info
    type(treelmesh_type), intent(in) :: tree

    !> Number of values to obtain for this variable (vectorized access).
    integer, intent(in) :: nPnts

    !> Resulting values for the requested variable.
    !!
    !! Dimension: n requested entries x nComponents of this variable
    !! Access: (iElem-1)*fun%nComponents + iComp
    real(kind=rk), intent(out) :: res(:)
    !--------------------------------------------------------------------------!
    ! --------------------------------------------------------------------------
    type(tem_st_fun_listElem_type), pointer :: fPtr
    integer :: iPoint
    real(kind=rk) :: st_res(nPnts, fun%nComponents)
    ! --------------------------------------------------------------------------
    !call C_F_POINTER( fun%method_Data, fPtr )
    ! avoid compiler warning about unused varsys
    call C_F_POINTER( varsys%method%val(fun%mypos)%method_Data, fPtr )

    st_res = tem_spacetime_for( me      = fPtr%val(1),    &
      &                         coord   = point,          &
      &                         time    = time,           &
      &                         n       = nPnts,          &
      &                         nComp   = fun%nComponents )

    do iPoint = 1, nPnts
      res( (iPoint-1)*fun%nComponents + 1 : iPoint*fun%nComponents ) &
        & = st_res(iPoint, :)
    end do
    if (tree%nElems < 0) write(logunit(10),*) 'Avoid unused dummy argument'

  end subroutine evaluate_FOAG_spacetime_vectorByCoordinate