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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 "LinearAnim.h"
#include "../player/Player.h"
using namespace boost::python;
using namespace std;
namespace avg {
LinearAnim::LinearAnim(const object& node, const string& sAttrName, long long duration,
const object& startValue, const object& endValue, bool bUseInt,
const object& startCallback, const object& stopCallback)
: SimpleAnim(node, sAttrName, duration, startValue, endValue, bUseInt, startCallback,
stopCallback)
{
}
LinearAnim::~LinearAnim()
{
}
float LinearAnim::interpolate(float t)
{
return t;
}
float LinearAnim::getStartPart(float start, float end, float cur)
{
return (cur-start)/(end-start);
}
AnimPtr fadeIn(const boost::python::object& node, long long duration, float max,
const boost::python::object& stopCallback)
{
object startVal = node.attr("opacity");
AnimPtr pAnim(new LinearAnim(node, "opacity", duration, startVal,
object(max), false, object(), stopCallback));
pAnim->start(false);
return pAnim;
}
AnimPtr fadeOut(const boost::python::object& node, long long duration,
const boost::python::object& stopCallback)
{
object startVal = node.attr("opacity");
AnimPtr pAnim(new LinearAnim(node, "opacity", duration, startVal,
object(0), false, object(), stopCallback));
pAnim->start(true);
return pAnim;
}
}
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