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//
// libavg - Media Playback Engine.
// Copyright (C) 2003-2014 Ulrich von Zadow
//
// 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 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// Current versions can be found at www.libavg.de
//
#include "ContinuousAnim.h"
#include "../base/Exception.h"
#include "../base/MathHelper.h"
#include "../player/Player.h"
using namespace boost::python;
using namespace std;
namespace avg {
ContinuousAnim::ContinuousAnim(const object& node, const string& sAttrName,
const object& startValue, const object& speed, bool bUseInt,
const object& startCallback, const object& stopCallback)
: AttrAnim(node, sAttrName, startCallback, stopCallback),
m_StartValue(startValue),
m_Speed(speed),
m_bUseInt(bUseInt)
{
}
ContinuousAnim::~ContinuousAnim()
{
}
void ContinuousAnim::start(bool bKeepAttr)
{
AttrAnim::start();
if (!bKeepAttr) {
setValue(m_StartValue);
}
m_EffStartValue = getValue();
m_StartTime = Player::get()->getFrameTime();
}
void ContinuousAnim::abort()
{
if (isRunning()) {
AnimPtr tempThis = shared_from_this();
removeFromMap();
setStopped();
}
}
bool ContinuousAnim::step()
{
object curValue;
float time = (Player::get()->getFrameTime()-m_StartTime)/1000.0f;
if (isPythonType<float>(m_EffStartValue)) {
curValue = object(time*extract<float>(m_Speed)+m_EffStartValue);
if (m_bUseInt) {
float d = extract<float>(curValue);
curValue = object(round(d));
}
} else if (isPythonType<glm::vec2>(m_EffStartValue)) {
glm::vec2 pt = extract<glm::vec2>(m_Speed)();
curValue = object(time*pt+m_EffStartValue);
if (m_bUseInt) {
glm::vec2 pt = extract<glm::vec2>(curValue)();
curValue = object(glm::vec2(round(pt.x), round(pt.y)));
}
} else {
throw (Exception(AVG_ERR_TYPE,
"Animated attributes must be either numbers or Point2D."));
}
setValue(curValue);
return false;
}
}
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