Claw  1.7.0
tweener.hpp
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00001 /*
00002   CLAW - a C++ Library Absolutely Wonderful
00003 
00004   CLAW is a free library without any particular aim but being useful to 
00005   anyone.
00006 
00007   Copyright (C) 2005-2011 Julien Jorge
00008 
00009   This library is free software; you can redistribute it and/or
00010   modify it under the terms of the GNU Lesser General Public
00011   License as published by the Free Software Foundation; either
00012   version 2.1 of the License, or (at your option) any later version.
00013 
00014   This library is distributed in the hope that it will be useful,
00015   but WITHOUT ANY WARRANTY; without even the implied warranty of
00016   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00017   Lesser General Public License for more details.
00018 
00019   You should have received a copy of the GNU Lesser General Public
00020   License along with this library; if not, write to the Free Software
00021   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
00022   contact: julien.jorge@gamned.org
00023 */
00030 #ifndef __CLAW_TWEEN_TWEENER_HPP__
00031 #define __CLAW_TWEEN_TWEENER_HPP__
00032 
00033 #include <algorithm>
00034 
00035 namespace claw
00036 {
00037   namespace tween
00038   {
00039     class base_tweener;
00040 
00047     class tweener
00048     {
00049     public:
00050       tweener();
00051       tweener( const tweener& that );
00052       tweener( const base_tweener& that );
00053       ~tweener();
00054 
00055       tweener& operator=( const tweener& that );
00056 
00057       void swap( tweener& that ) throw();
00058 
00059       bool is_finished() const;
00060       double update( double dt );
00061 
00062     private:
00064       base_tweener* m_impl;
00065       
00066     }; // class tweener
00067 
00068   } // namespace tween
00069 } // namespace claw
00070 
00071 namespace std
00072 {
00073   template<>
00074   void swap( claw::tween::tweener& a, claw::tween::tweener& b );
00075 } // namespace std
00076 
00077 #endif // __CLAW_TWEEN_TWEENER_HPP__