[Olena-patches] 647: Add value cast image morpher.

2006-10-16 Thierry GERAUD &lt;theo(a)tegucigalpa.lrde.epita.fr&gt; Add value cast image morpher. * tests/value_cast.cc: New. * tests/Makefile.am: Update. * oln/morpher/value_cast.hh: New. * oln/Makefile.am: Update. * oln/morpher/internal/image_value_morpher.hh (lvalue): Change definition mode from single_vtype to vtypes. Index: tests/Makefile.am =================================================================== --- tests/Makefile.am (revision 646) +++ tests/Makefile.am (working copy) @@ -40,6 +40,7 @@ \ identity_morpher \ add_neighborhood_morpher \ + value_cast \ morphers \ \ fill @@ -67,6 +68,7 @@ # Morphers. identity_morpher_SOURCES = identity_morpher.cc add_neighborhood_morpher_SOURCES = add_neighborhood_morpher.cc +value_cast_SOURCES = value_cast.cc morphers_SOURCES = morphers.cc # Algorithms. Index: tests/value_cast.cc =================================================================== --- tests/value_cast.cc (revision 0) +++ tests/value_cast.cc (revision 0) @@ -0,0 +1,85 @@ +// Copyright (C) 2006 EPITA Research and Development Laboratory +// +// This file is part of the Olena Library. This library is free +// software; you can redistribute it and/or modify it under the terms +// of the GNU General Public License version 2 as published by the +// Free Software Foundation. +// +// This library 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 library; see the file COPYING. If not, write to +// the Free Software Foundation, 51 Franklin Street, Fifth Floor, +// Boston, MA 02111-1307, USA. +// +// As a special exception, you may use this file as part of a free +// software library without restriction. Specifically, if other files +// instantiate templates or use macros or inline functions from this +// file, or you compile this file and link it with other files to +// produce an executable, this file does not by itself cause the +// resulting executable to be covered by the GNU General Public +// License. This exception does not however invalidate any other +// reasons why the executable file might be covered by the GNU General +// Public License. + +/// Test oln::value_cast.cc. + +#include <iostream> + +#include <oln/basics2d.hh> +#include <oln/value/all.hh> +#include <oln/morpher/value_cast.hh> + + +template <typename T> +void print(T) +{ + std::cout << "?" << std::endl; +} + + +void print(int) +{ + std::cout << "int" << std::endl; +} + +void print(float) +{ + std::cout << "float" << std::endl; +} + +void print(unsigned char) +{ + std::cout << "unsigned char" << std::endl; +} + + + + +int main() +{ + using namespace oln; + + using oln::value::gl8; + + point2d p(0,0); + + { + image2d<int> ima(1,1); + print( value_cast<float>(ima)(p) ); + } + + { + image2d<bool> ima(1,1); + print( value_cast<int>(ima)(p) ); + } + + { + image2d<gl8> ima(1,1); + print( value_cast<unsigned char>(ima)(p) ); + } + +} Index: oln/Makefile.am =================================================================== --- oln/Makefile.am (revision 646) +++ oln/Makefile.am (working copy) @@ -151,6 +151,7 @@ morpher/identity.hh \ morpher/tags.hh \ morpher/thru_fun.hh \ + morpher/value_cast.hh \ \ value/all.hh \ value/default.hh \ Index: oln/morpher/value_cast.hh =================================================================== --- oln/morpher/value_cast.hh (revision 0) +++ oln/morpher/value_cast.hh (revision 0) @@ -0,0 +1,129 @@ +// Copyright (C) 2006 EPITA Research and Development Laboratory +// +// This file is part of the Olena Library. This library is free +// software; you can redistribute it and/or modify it under the terms +// of the GNU General Public License version 2 as published by the +// Free Software Foundation. +// +// This library 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 library; see the file COPYING. If not, write to +// the Free Software Foundation, 51 Franklin Street, Fifth Floor, +// Boston, MA 02111-1307, USA. +// +// As a special exception, you may use this file as part of a free +// software library without restriction. Specifically, if other files +// instantiate templates or use macros or inline functions from this +// file, or you compile this file and link it with other files to +// produce an executable, this file does not by itself cause the +// resulting executable to be covered by the GNU General Public +// License. This exception does not however invalidate any other +// reasons why the executable file might be covered by the GNU General +// Public License. + +#ifndef OLN_MORPHER_VALUE_CAST +# define OLN_MORPHER_VALUE_CAST + +# include <xtd/abstract/open_nary_fun.hh> +# include <xtd/res.hh> +# include <oln/morpher/internal/image_value_morpher.hh> + + + +namespace oln +{ + + namespace morpher + { + // Forward declaration. + template <typename Image, typename Value> struct value_cast; + + } // end of namespace oln::morpher + + + /// Super type. + template <typename Image, typename Value> + struct set_super_type< morpher::value_cast<Image, Value> > + { + typedef morpher::value_cast<Image, Value> self_t; + typedef morpher::internal::image_value_morpher<Image, self_t> ret; + }; + + + template <typename Image, typename Value> + struct vtypes< morpher::value_cast<Image, Value> > + { + typedef Value value_type; + typedef mlc::false_ is_mutable_type; + }; + + template <typename Image, typename Value> + struct single_vtype< morpher::value_cast<Image, Value>, typedef_::rvalue_type > + { + typedef Value ret; + }; + + + + namespace morpher + { + + /// 'Image thru Valuection' morpher. + template <typename Image, typename Value> + class value_cast : public internal::image_value_morpher< Image, + value_cast<Image, Value> > + { + private: + + typedef value_cast<Image, Value> self_t; + typedef internal::image_value_morpher<Image, self_t> super_t; + + typedef oln_type_of(self_t, psite) psite_t; + typedef oln_type_of(self_t, rvalue) rvalue_t; + + public: + + value_cast(const Image& image); + }; + + +# ifndef OLN_INCLUDE_ONLY + + template <typename Image, typename Value> + value_cast<Image, Value>::value_cast(const Image& image) : + super_t(image) + { + } + +# endif + + } // end of namespace oln::morpher + + + template <typename Value, typename I> + morpher::value_cast<I, Value> + value_cast(const abstract::image<I>& ima); + + +# ifndef OLN_INCLUDE_ONLY + + template <typename Value, typename I> + morpher::value_cast<I, Value> + value_cast(const abstract::image<I>& ima) + { + morpher::value_cast<I, Value> tmp(ima.exact()); + return tmp; + } + +# endif + + +} // end of namespace oln + + + +#endif // ! OLN_MORPHER_VALUE_CAST Index: oln/morpher/internal/image_value_morpher.hh =================================================================== --- oln/morpher/internal/image_value_morpher.hh (revision 646) +++ oln/morpher/internal/image_value_morpher.hh (working copy) @@ -64,7 +64,7 @@ { // Morpher type. typedef oln::morpher::tag::identity morpher_type; // FIXME: Wrong! - + typedef mlc::undefined lvalue_type; typedef mlc::undefined value_type; }; @@ -75,14 +75,7 @@ typedef mlc::undefined ret; }; - template <typename Image, typename Exact> - struct single_vtype< morpher::internal::image_value_morpher<Image, Exact>, - typedef_::lvalue_type > - { - typedef mlc::undefined ret; - }; - namespace morpher { namespace internal