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/*
CLAW - a C++ Library Absolutely Wonderful
CLAW is a free library without any particular aim but being useful to
anyone.
Copyright (C) 2005-2011 Julien Jorge
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
contact: julien.jorge@gamned.org
*/
/**
* \file claw/code/tween/tweener.cpp
* \brief Implementation of the claw::tween::tweener class.
* \author Julien Jorge
*/
#include <claw/tween/tweener.hpp>
#include <claw/tween/base_tweener.hpp>
/*----------------------------------------------------------------------------*/
/**
* \brief Default constructor.
*/
claw::tween::tweener::tweener()
: m_impl(NULL)
{
} // tweener::tweener()
/*----------------------------------------------------------------------------*/
/**
* \brief Copy constructor.
* \param that The instance to copy from.
*/
claw::tween::tweener::tweener( const tweener& that )
: m_impl( that.m_impl == NULL ? NULL : that.m_impl->clone() )
{
} // tweener::tweener()
/*----------------------------------------------------------------------------*/
/**
* \brief Constructor from a base_tweener.
* \param that The instance to use for the implementation.
*/
claw::tween::tweener::tweener( const base_tweener& that )
: m_impl( that.clone() )
{
} // tweener::tweener()
/*----------------------------------------------------------------------------*/
/**
* \brief Destructor.
*/
claw::tween::tweener::~tweener()
{
delete m_impl;
} // tweener::~tweener()
/*----------------------------------------------------------------------------*/
/**
* \brief Assignment operator.
* \param that The instance to copy from.
*/
claw::tween::tweener& claw::tween::tweener::operator=( const tweener& that )
{
tweener tmp(that);
swap(tmp);
return *this;
} // tweener::operator=()
/*----------------------------------------------------------------------------*/
/**
* \brief Swap this instance with a given instance.
* \param that The instance to swap with.
*/
void claw::tween::tweener::swap( tweener& that ) throw()
{
std::swap(m_impl, that.m_impl);
} // tweener::swap()
/*----------------------------------------------------------------------------*/
/**
* \brief Tell if the tweener has reached his total duration.
*/
bool claw::tween::tweener::is_finished() const
{
if ( m_impl == NULL )
return true;
else
return m_impl->is_finished();
} // tweener::is_finished()
/*----------------------------------------------------------------------------*/
/**
* \brief Update the tweener of a given amount of time.
* \param dt The duration of the update in time units since the last call.
*/
double claw::tween::tweener::update( double dt )
{
if ( m_impl == NULL )
return dt;
else
return m_impl->update(dt);
} // tweener::update()
/*----------------------------------------------------------------------------*/
/**
* \brief Execute the callbacks notifying about the finish of the tweener.
*/
void claw::tween::tweener::on_finished( finish_callback f )
{
if ( m_impl != NULL )
m_impl->on_finished(f);
} // tweener::on_finished()
/*----------------------------------------------------------------------------*/
/**
* \brief Swap two tweeners.
* \param a The first tweener.
* \param b The second tweener.
*/
template<>
void std::swap( claw::tween::tweener& a, claw::tween::tweener& b )
{
a.swap(b);
} // std::swap()
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