KeyFrameSystem.cpp

/***************************************************************************
 *   This file is part of OpenCAL: Open Computer Animation Library         *
 *   I created OpenCAL as my master's thesis Computer Science (multimedia) *
 *   at the tUL university in Diepenbeek, Belgium                          *
 *                                                                         *
 *   Copyright (C) 2003-2004 by Jeroen Dierckx                             *
 *   jeroen.dierckx@student.luc.ac.be                                      *
 *                                                                         *
 ***************************************************************************/

// Includes
#include "KeyFrameSystem.h"
#include <OpenCAL/TimeTrack.h>
using namespace OpenCAL;

using namespace std;


/******************************
* Constructors and destructor *
******************************/

KeyFrameSystem::KeyFrameSystem(System *parent)
: Actor(parent), m_destructing(false)
, m_currentTime(0.0f), m_loop(true), m_stopped(false)
{
}

KeyFrameSystem::~KeyFrameSystem()
{
    m_destructing = true;

    TimeTrackList::iterator it;
    for(it = m_timeTracks.begin(); it != m_timeTracks.end(); ++it)
        delete *it;
}


/************************
* Get and set functions *
************************/



/**************************
* Time stepping functions *
**************************/

void KeyFrameSystem::execute(float deltaSeconds)
{
    //if(!m_enabled) return;
    Actor::execute(deltaSeconds);

    if(m_stopped) return;

    m_currentTime += deltaSeconds;

    TimeTrackList::iterator it;
    for(it = m_timeTracks.begin(); it != m_timeTracks.end(); ++it)
        (*it)->step(deltaSeconds);
}

void KeyFrameSystem::rewind()
{
    m_currentTime = 0.0f;

    TimeTrackList::iterator it;
    for(it = m_timeTracks.begin(); it != m_timeTracks.end(); ++it)
        (*it)->setTime(m_currentTime);
}

void KeyFrameSystem::setTime(float time)
{
    m_currentTime = time;

    TimeTrackList::iterator it;
    for(it = m_timeTracks.begin(); it != m_timeTracks.end(); ++it)
        (*it)->setTime(m_currentTime);
}


/**********************
* Protected functions *
**********************/

void KeyFrameSystem::deleteTimeTrack(TimeTrack *track)
{
    if(m_destructing) return;

    TimeTrackList::iterator it;
    for(it = m_timeTracks.begin(); it != m_timeTracks.end(); ++it)
        if(*it == track)
        {
            m_timeTracks.erase(it);
            return;
        }
}

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