/* === S Y N F I G ========================================================= */
/*! \file warp.h
** \brief Header file for implementation of the "Warp" layer
**
** $Id$
**
** \legal
** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
** 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 ===========================================================
**
** ========================================================================= */
/* === S T A R T =========================================================== */
#ifndef __SYNFIG_WARP_H
#define __SYNFIG_WARP_H
/* === H E A D E R S ======================================================= */
#include <synfig/vector.h>
#include <synfig/angle.h>
#include <synfig/layer.h>
#include <synfig/rect.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 ======================================= */
using namespace synfig;
using namespace std;
using namespace etl;
class Warp_Trans;
class Warp : public Layer
{
SYNFIG_LAYER_MODULE_EXT
friend class Warp_Trans;
private:
Point src_tl,src_br,dest_tl,dest_tr,dest_bl,dest_br;
Real horizon;
Real cache_a,cache_b,cache_c,cache_d,cache_e,cache_f,cache_i,cache_j;
Real matrix[3][3];
Real inv_matrix[3][3];
Point transform_forward(const Point& p)const;
Point transform_backward(const Point& p)const;
Real transform_forward_z(const Point& p)const;
Real transform_backward_z(const Point& p)const;
bool clip;
public:
void sync();
Warp();
~Warp();
virtual synfig::Rect get_full_bounding_rect(synfig::Context context)const;
virtual synfig::Rect get_bounding_rect()const;
virtual bool set_param(const synfig::String & param, const synfig::ValueBase &value);
virtual ValueBase get_param(const synfig::String & param)const;
virtual Color get_color(Context context, const Point &pos)const;
virtual bool accelerated_render(Context context,Surface *surface,int quality, const RendDesc &renddesc, ProgressCallback *cb)const;
virtual bool accelerated_cairorender(Context context,cairo_surface_t *surface,int quality, const RendDesc &renddesc, ProgressCallback *cb)const;
synfig::Layer::Handle hit_check(synfig::Context context, const synfig::Point &point)const;
virtual Vocab get_param_vocab()const;
virtual etl::handle<synfig::Transform> get_transform()const;
};
/* === E N D =============================================================== */
#endif