/* === S Y N F I G ========================================================= */

/*!	\file stroboscope.cpp

**	\brief Implementation of the "Stroboscope" layer

**

**	$Id$

**

**	\legal

**	Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley

**	Copyright (c) 2007, 2008 Chris Moore

**	Copyright (c) 2009 Ray Frederikson

**	Copyright (c) 2012-2013 Carlos Lรณpez

**

**	This package is free software; you can redistribute it and/or

**	modify it under the terms of the GNU General Public License as

**	published by the Free Software Foundation; either version 2 of

**	the License, or (at your option) any later version.

**

**	This package 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

**	General Public License for more details.

**	\endlegal

**

** === N O T E S ===========================================================

**

** ========================================================================= */

/* === H E A D E R S ======================================================= */

#ifdef USING_PCH

#	include "pch.h"

#else

#ifdef HAVE_CONFIG_H

#	include <config.h></config.h>

#endif

#include "stroboscope.h"

#include <synfig localization.h=""></synfig>

#include <synfig general.h=""></synfig>

#include <synfig valuenode.h=""></synfig>

#include <synfig valuenode_const.h="" valuenodes=""></synfig>

#include <synfig valuenode_subtract.h="" valuenodes=""></synfig>

#include <synfig time.h=""></synfig>

#include <synfig context.h=""></synfig>

#include <synfig paramdesc.h=""></synfig>

#include <synfig renddesc.h=""></synfig>

#include <synfig value.h=""></synfig>

#include <synfig canvas.h=""></synfig>

#endif

using namespace std;

using namespace etl;

using namespace synfig;

using namespace modules;

using namespace lyr_std;

/* === M A C R O S ========================================================= */

/* === G L O B A L S ======================================================= */

SYNFIG_LAYER_INIT(Layer_Stroboscope);

SYNFIG_LAYER_SET_NAME(Layer_Stroboscope,"stroboscope");

SYNFIG_LAYER_SET_LOCAL_NAME(Layer_Stroboscope,N_("Stroboscope"));

SYNFIG_LAYER_SET_CATEGORY(Layer_Stroboscope,N_("Time"));

SYNFIG_LAYER_SET_VERSION(Layer_Stroboscope,"0.1");

SYNFIG_LAYER_SET_CVS_ID(Layer_Stroboscope,"$Id$");

/* === P R O C E D U R E S ================================================= */

/* === M E T H O D S ======================================================= */

Layer_Stroboscope::Layer_Stroboscope()

{

	param_frequency=ValueBase(float(2.0));

	SET_INTERPOLATION_DEFAULTS();

	SET_STATIC_DEFAULTS();

}

Layer_Stroboscope::~Layer_Stroboscope()

{

}

bool

Layer_Stroboscope::set_param(const String & param, const ValueBase &value)

{

	IMPORT_VALUE(param_frequency);

	return Layer::set_param(param,value);

}

ValueBase

Layer_Stroboscope::get_param(const String & param)const

{

	EXPORT_VALUE(param_frequency);

	EXPORT_NAME();

	EXPORT_VERSION();

	return Layer::get_param(param);

}

Layer::Vocab

Layer_Stroboscope::get_param_vocab()const

{

	Layer::Vocab ret(Layer::get_param_vocab());

	ret.push_back(ParamDesc("frequency")

		.set_local_name(_("Frequency"))

		.set_description(_("Frequency of the Strobe in times per second"))

	);

	return ret;

}

void

Layer_Stroboscope::set_time_vfunc(IndependentContext context, Time t)const

{

	float frequency=param_frequency.get(float());

	Time ret_time=Time::begin();

	if(frequency > 0.0)

		ret_time = Time(1.0)/frequency*floor(t*frequency);

	context.set_time(ret_time);

}