Claw 1.7.0
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       void set_init( double v );
00068       void set_end( double v );
00069       void set_duration( double v );
00070       void set_callback( update_function f );
00071       void set_easing( easing_function f );
00072 
00073     private:
00074       single_tweener* do_clone() const;
00075       bool do_is_finished() const;
00076       double do_update( double dt );
00077 
00078     private:
00080       double m_init;
00081       
00083       double m_end;
00084 
00086       double m_date;
00087 
00089       double m_duration;
00090 
00092       update_function m_callback;
00093 
00095       easing_function m_easing;
00096       
00097     }; // class single_tweener
00098 
00099   } // namespace tween
00100 } // namespace claw
00101 
00102 #endif // __CLAW_TWEEN_SINGLE_TWEENER_HPP__