/* === S Y N F I G ========================================================= */
/*! \file rotate.cpp
** \brief Implementation of the "Rotate" layer
**
** $Id$
**
** \legal
** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
** Copyright (c) 2008 Chris Moore
** Copyright (c) 2012-2013 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 <ETL/misc>
#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>
#include <synfig/transform.h>
#include "rotate.h"
#include <synfig/rendering/common/task/tasktransformation.h>
#include <synfig/rendering/primitive/transformationaffine.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(Rotate);
SYNFIG_LAYER_SET_NAME(Rotate,"rotate");
SYNFIG_LAYER_SET_LOCAL_NAME(Rotate,N_("Rotate"));
SYNFIG_LAYER_SET_CATEGORY(Rotate,N_("Transform"));
SYNFIG_LAYER_SET_VERSION(Rotate,"0.1");
SYNFIG_LAYER_SET_CVS_ID(Rotate,"$Id$");
/* === P R O C E D U R E S ================================================= */
/* === M E T H O D S ======================================================= */
/* === E N T R Y P O I N T ================================================= */
Rotate::Rotate():
param_origin (ValueBase(Vector(0,0))),
param_amount (ValueBase(Angle::deg(0))),
sin_val (0),
cos_val (1)
{
SET_INTERPOLATION_DEFAULTS();
SET_STATIC_DEFAULTS();
}
Rotate::~Rotate()
{
}
bool
Rotate::set_param(const String & param, const ValueBase &value)
{
IMPORT_VALUE(param_origin);
IMPORT_VALUE_PLUS(param_amount,
{
Angle amount=value.get(Angle());
sin_val=Angle::sin(amount).get();
cos_val=Angle::cos(amount).get();
param_amount.set(amount);
return true;
}
);
return false;
}
ValueBase
Rotate::get_param(const String ¶m)const
{
EXPORT_VALUE(param_origin);
EXPORT_VALUE(param_amount);
EXPORT_NAME();
EXPORT_VERSION();
return ValueBase();
}
Layer::Vocab
Rotate::get_param_vocab()const
{
Layer::Vocab ret;
ret.push_back(ParamDesc("origin")
.set_local_name(_("Origin"))
.set_description(_("Point where you want the origin to be"))
);
ret.push_back(ParamDesc("amount")
.set_local_name(_("Amount"))
.set_description(_("Amount of rotation"))
.set_origin("origin")
);
return ret;
}
class lyr_std::Rotate_Trans : public Transform
{
etl::handle<const Rotate> layer;
public:
Rotate_Trans(const Rotate* x):Transform(x->get_guid()),layer(x) { }
Vector perform(const Vector& x)const
{
Vector origin=layer->param_origin.get(Vector());
Point pos(x-origin);
return Point(layer->cos_val*pos[0]-layer->sin_val*pos[1],layer->sin_val*pos[0]+layer->cos_val*pos[1])+origin;
}
Vector unperform(const Vector& x)const
{
Vector origin=layer->param_origin.get(Vector());
Point pos(x-origin);
return Point(layer->cos_val*pos[0]+layer->sin_val*pos[1],-layer->sin_val*pos[0]+layer->cos_val*pos[1])+origin;
}
String get_string()const
{
return "rotate";
}
};
etl::handle<Transform>
Rotate::get_transform()const
{
return new Rotate_Trans(this);
}
Layer::Handle
Rotate::hit_check(Context context, const Point &p)const
{
Vector origin=param_origin.get(Vector());
Point pos(p-origin);
Point newpos(cos_val*pos[0]+sin_val*pos[1],-sin_val*pos[0]+cos_val*pos[1]);
newpos+=origin;
return context.hit_check(newpos);
}
Color
Rotate::get_color(Context context, const Point &p)const
{
Vector origin=param_origin.get(Vector());
Point pos(p-origin);
Point newpos(cos_val*pos[0]+sin_val*pos[1],-sin_val*pos[0]+cos_val*pos[1]);
newpos+=origin;
return context.get_color(newpos);
}
Rect
Rotate::get_full_bounding_rect(Context context)const
{
Rect under(context.get_full_bounding_rect());
return get_transform()->perform(under);
}
rendering::Task::Handle
Rotate::build_rendering_task_vfunc(Context context)const
{
Vector origin=param_origin.get(Vector());
Angle amount=param_amount.get(Angle());
rendering::TaskTransformationAffine::Handle task_transformation(new rendering::TaskTransformationAffine());
task_transformation->transformation->matrix =
Matrix().set_translate(origin)
* Matrix().set_rotate(amount)
* Matrix().set_translate(-origin);
task_transformation->sub_task() = context.build_rendering_task();
return task_transformation;
}