/* === S Y N F I G ========================================================= */
/*! \file xorpattern.cpp
** \brief Implementation of the "XOR Pattern" layer
**
** $Id$
**
** \legal
** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
** Copyright (c) 2007-2008 Chris Moore
** Copyright (c) 2011-2013 Carlos López
**
** 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>
#endif
#include "xorpattern.h"
#include <synfig/localization.h>
#include <synfig/general.h>
#include <synfig/string.h>
#include <synfig/time.h>
#include <synfig/context.h>
#include <synfig/paramdesc.h>
#include <synfig/renddesc.h>
#include <synfig/surface.h>
#include <synfig/value.h>
#include <synfig/valuenode.h>
#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(XORPattern);
SYNFIG_LAYER_SET_NAME(XORPattern,"xor_pattern");
SYNFIG_LAYER_SET_LOCAL_NAME(XORPattern,N_("XOR Pattern"));
SYNFIG_LAYER_SET_CATEGORY(XORPattern,N_("Other"));
SYNFIG_LAYER_SET_VERSION(XORPattern,"0.1");
SYNFIG_LAYER_SET_CVS_ID(XORPattern,"$Id$");
/* === P R O C E D U R E S ================================================= */
/* === M E T H O D S ======================================================= */
XORPattern::XORPattern():
Layer_Composite(1.0,Color::BLEND_COMPOSITE),
param_origin(ValueBase(Vector(0.125,0.125))),
param_size(ValueBase(Vector(0.25,0.25)))
{
SET_INTERPOLATION_DEFAULTS();
SET_STATIC_DEFAULTS();
}
bool
XORPattern::set_param(const String & param, const ValueBase &value)
{
IMPORT_VALUE(param_origin);
IMPORT_VALUE(param_size);
if(param=="pos")
return set_param("origin", value);
return Layer_Composite::set_param(param,value);
}
ValueBase
XORPattern::get_param(const String & param)const
{
EXPORT_VALUE(param_origin);
EXPORT_VALUE(param_size);
EXPORT_NAME();
EXPORT_VERSION();
return Layer_Composite::get_param(param);
}
Color
XORPattern::get_color(Context context, const Point &point)const
{
Point origin=param_origin.get(Point());
Point size=param_size.get(Point());
if(get_amount()==0.0)
return context.get_color(point);
unsigned int a=(unsigned int)floor((point[0]-origin[0])/size[0]), b=(unsigned int)floor((point[1]-origin[1])/size[1]);
unsigned char rindex=(a^b);
unsigned char gindex=(a^(~b))*4;
unsigned char bindex=~(a^b)*2;
Color color((Color::value_type)rindex/(Color::value_type)255.0,
(Color::value_type)gindex/(Color::value_type)255.0,
(Color::value_type)bindex/(Color::value_type)255.0,
1.0);
if(get_amount() == 1 && get_blend_method() == Color::BLEND_STRAIGHT)
return color;
else
return Color::blend(color,context.get_color(point),get_amount(),get_blend_method());
}
Layer::Vocab
XORPattern::get_param_vocab()const
{
Layer::Vocab ret(Layer_Composite::get_param_vocab());
ret.push_back(ParamDesc("origin")
.set_local_name(_("Origin"))
.set_description(_("Center of the pattern"))
);
ret.push_back(ParamDesc("size")
.set_local_name(_("Size"))
.set_description(_("Size of the pattern"))
.set_origin("origin")
);
return ret;
}
Layer::Handle
XORPattern::hit_check(Context context, const Point &getpos)const
{
// if we have a zero amount
if(get_amount()==0.0)
// then the click passes down to our context
return context.hit_check(getpos);
Layer::Handle tmp;
// if we are behind the context, and the click hits something in the context
if(get_blend_method()==Color::BLEND_BEHIND && (tmp=context.hit_check(getpos)))
// then return the thing it hit in the context
return tmp;
// if we're using an 'onto' blend method and the click missed the context
if(Color::is_onto(get_blend_method()) && !(tmp=context.hit_check(getpos)))
// then it misses everything
return 0;
// otherwise the click hit us, since we're the size of the whole plane
return const_cast<XORPattern*>(this);
}