/* === S Y N F I G ========================================================= */
/*! \file twirl.h
** \brief Header file for implementation of the "Twirl" 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
*/
/* ========================================================================= */
/* === S T A R T =========================================================== */
#ifndef __SYNFIG_TWIRL_H
#define __SYNFIG_TWIRL_H
/* === H E A D E R S ======================================================= */
#include <synfig/layers/layer_composite_fork.h>
#include <synfig/color.h>
#include <synfig/vector.h>
#include <synfig/value.h>
#include <synfig/gradient.h>
#include <synfig/angle.h>
/* === M A C R O S ========================================================= */
/* === T Y P E D E F S ===================================================== */
/* === C L A S S E S & S T R U C T S ======================================= */
namespace synfig
{
namespace modules
{
namespace lyr_std
{
class Twirl_Trans;
class Twirl : public Layer_CompositeFork
{
SYNFIG_LAYER_MODULE_EXT
friend class Twirl_Trans;
private:
//! Parameter: (Point)
ValueBase param_center;
//! Parameter: (Real)
ValueBase param_radius;
//! Parameter: (Angle)
ValueBase param_rotations;
//! Parameter: (bool)
ValueBase param_distort_inside;
//! Parameter: (bool)
ValueBase param_distort_outside;
Point distort(const Point &pos, bool reverse=false)const;
public:
Twirl();
virtual bool set_param(const String & param, const ValueBase &value);
virtual ValueBase get_param(const String & param)const;
virtual Color get_color(Context context, const Point &pos)const;
virtual CairoColor get_cairocolor(Context context, const Point &pos)const;
//virtual bool accelerated_render(Context context,Surface *surface,int quality, const RendDesc &renddesc, ProgressCallback *cb)const;
Layer::Handle hit_check(Context context, const Point &point)const;
virtual Vocab get_param_vocab()const;
virtual etl::handle<Transform> get_transform()const;
virtual bool reads_context()const { return true; }
protected:
virtual RendDesc get_sub_renddesc_vfunc(const RendDesc &renddesc) const;
virtual rendering::Task::Handle build_rendering_task_vfunc(Context context) const;
}; // END of class Twirl
}; // END of namespace lyr_std
}; // END of namespace modules
}; // END of namespace synfig
/* === E N D =============================================================== */
#endif