Claw  1.7.3
tween/single_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_SINGLE_TWEENER_HPP__
00031 #define __CLAW_TWEEN_SINGLE_TWEENER_HPP__
00032 
00033 #include <claw/tween/base_tweener.hpp>
00034 #include <claw/tween/easing/easing_none.hpp>
00035 
00036 #include <boost/function.hpp>
00037 
00038 namespace claw
00039 {
00040   namespace tween
00041   {
00048     class single_tweener:
00049       public base_tweener
00050     {
00051     public:
00054       typedef boost::function<void (double)> update_function;
00055 
00057       typedef boost::function<double (double)> easing_function;
00058 
00059     public:
00060       single_tweener();
00061       single_tweener
00062       ( double init, double end, double duration, update_function callback,
00063         easing_function e );
00064       single_tweener
00065       ( double& val, double end, double duration, easing_function e );
00066 
00067       double get_init() const;
00068       void set_init( double v );
00069 
00070       double get_end() const;
00071       void set_end( double v );
00072 
00073       double get_duration() const;
00074       void set_duration( double v );
00075 
00076       void set_callback( update_function f );
00077       void set_easing( easing_function f );
00078 
00079       double get_value() const;
00080 
00081     private:
00082       single_tweener* do_clone() const;
00083       bool do_is_finished() const;
00084       double do_update( double dt );
00085 
00086     private:
00088       double m_init;
00089       
00091       double m_end;
00092 
00094       double m_date;
00095 
00097       double m_duration;
00098 
00100       update_function m_callback;
00101 
00103       easing_function m_easing;
00104       
00105     }; // class single_tweener
00106 
00107   } // namespace tween
00108 } // namespace claw
00109 
00110 #endif // __CLAW_TWEEN_SINGLE_TWEENER_HPP__