[Olena-patches] cleanup-2008 2221: Add a window-to-neighborhood adapter.

https://svn.lrde.epita.fr/svn/oln/branches/cleanup-2008 Index: ChangeLog from Thierry Geraud &lt;thierry.geraud(a)lrde.epita.fr&gt; Add a window-to-neighborhood adapter. * milena/mln/core/internal/window_base.hh (is_neighbable_): New. * milena/mln/core/neighb.hh: Revamp. internal/window_base.hh | 12 ++++ neighb.hh | 116 ++++++++++++++++++++++++++++++------------------ 2 files changed, 86 insertions(+), 42 deletions(-) Index: milena/mln/core/internal/window_base.hh --- milena/mln/core/internal/window_base.hh (revision 2220) +++ milena/mln/core/internal/window_base.hh (working copy) @@ -60,6 +60,10 @@ /// Site associated type. typedef mln_site(D) site; + /// Test if this window can be a neighborhood. + // This method is used in the neighborhood window-adapter. + bool is_neighbable_() const; + protected: window_base(); }; @@ -73,6 +77,14 @@ { } + template <typename D, typename E> + inline + bool + window_base<D,E>::is_neighbable_() const + { + return exact(this)->is_symmetric() && ! exact(this)->is_centered(); + } + # endif // ! MLN_INCLUDE_ONLY } // end of namespace mln::internal Index: milena/mln/core/neighb.hh --- milena/mln/core/neighb.hh (revision 2220) +++ milena/mln/core/neighb.hh (working copy) @@ -30,75 +30,107 @@ /*! \file mln/core/neighb.hh * - * \brief Definition of the generic neighborhood class mln::neighb. + * \brief Definition of a window-to-neighborhood adapter. */ # include <mln/core/internal/neighborhood_base.hh> -# include <mln/core/internal/basic_window_impl.hh> -# include <mln/core/internal/neighborhood_impl_mixin.hh> -# include <mln/core/window.hh> -# include <mln/literal/zero.hh> namespace mln { - /*! \brief Generic neighborhood class. - * - * This neighborhood of window is just like a set of delta-points. - * The parameter is \c D, type of delta-point. + /*! \brief Adapter class from window to neighborhood. */ - template <typename D> - struct neighb : internal::neighborhood_base< D, neighb<D> >, - internal::neighborhood_impl_mixin< internal::basic_window_impl< D, neighb<D> >, - neighb<D> > + template <typename W> + class neighb : public internal::neighborhood_base< mln_dpsite(W), neighb<D> >, + private mlc_is_a(W, Window)::check_t { - /*! \brief Constructor without argument. - * - * The constructed neighborhood is empty. You have to use insert() - * to proceed to the neighborhood definition. - */ + public: + + /// Forward site iterator associated type. + typedef mln_fwd_qiter(W) fwd_niter; + + /// Backward site iterator associated type. + typedef mln_bkd_qiter(W) bkd_niter; + + /// Site iterator associated type. + typedef mln_qiter(W) niter; + + + /// Constructor without argument. neighb(); - // Overridden from internal::basic_window_impl so that it also - // inserts \a -dp. - neighb<D>& insert_(const D& dp); - - typedef mln::window<D> window; - - window to_window() const - { - window tmp(this->dps_); - D zero = literal::zero; - tmp.insert(zero); - return tmp; - } + /// Constructor from a window \p win. + neighb(const W& win); + + /// Get the corresponding window. + const W& win() const; + + private: + W win_; }; + + namespace convert + { + namespace impl + { + + template <typename W> + void + from_to_(const mln::neighb<W>& from, W& to); + + } // end of namespace convert::impl + + } // end of namespace convert + + + # ifndef MLN_INCLUDE_ONLY - template <typename D> + template <typename W> inline - neighb<D>::neighb() + neighb<W>::neighb() { } - template <typename D> + template <typename W> inline - neighb<D>& - neighb<D>::insert_(const D& dp) + neighb<W>::neighb(const W& win) { - typedef neighb<D> self; - typedef internal::basic_window_impl< D, neighb<D> > win_impl; - typedef internal::neighborhood_impl_mixin< win_impl, neighb<D> > super_; - this->super_::insert_( dp); - this->super_::insert_(-dp); - return *this; + mln_precondition(win.is_neighbable_()); + win_ = win; } + template <typename W> + inline + const W& + neighb<W>::win() const + { + return win_; + } + + + namespace convert + { + namespace impl + { + + template <typename W> + void + from_to_(const mln::neighb<W>& from, W& to) + { + to = from.win(); + } + + } // end of namespace convert::impl + + } // end of namespace convert + + # endif // ! MLN_INCLUDE_ONLY } // end of namespace mln