/* === S Y N F I G ========================================================= */
/*! \file layer_shape.h
** \brief Header file for implementation of the "Shape" layer
**
** $Id$
**
** \legal
** Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
** Copyright (c) 2007-2008 Chris Moore
**
** 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_LAYER_SHAPE_H
#define __SYNFIG_LAYER_SHAPE_H
/* === H E A D E R S ======================================================= */
#include "layer_composite.h"
#include "color.h"
#include "vector.h"
#include "blur.h"
#include <vector>
/* === 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 {
/*! \class Layer_Shape
** \brief writeme */
class Layer_Shape : public Layer_Composite, public Layer_NoDeform
{
SYNFIG_LAYER_MODULE_EXT
enum WindingStyle
{
WINDING_NON_ZERO=0, //!< less than -1 --> 1; -1 --> 1; 0 --> 0; 1 --> 1; greater than 1 --> 1
WINDING_EVEN_ODD=1, //!< add or subtract multiples of 2 to get into range -1:1, then as above
WINDING_END=2 //!< \internal
};
private:
//internal caching
struct Intersector;
Intersector *edge_table;
//exported data
Color color;
Point origin;
bool invert;
bool antialias;
int blurtype;
Real feather;
WindingStyle winding_style;
std::vector< char > bytestream;
//for use in creating the bytestream
int lastbyteop;
int lastoppos;
protected:
Layer_Shape(const Real &a = 1.0, const Color::BlendMethod m = Color::BLEND_COMPOSITE);
public:
~Layer_Shape();
//! Clears out any data
/*! Also clears out the Intersector
*/
void clear();
//void sync();
void move_to(Real x, Real y);
void line_to(Real x, Real y);
void conic_to(Real x1, Real y1, Real x, Real y);
void conic_to_smooth(Real x, Real y); //x1,y1 derived from current tangent
void curve_to(Real x1, Real y1, Real x2, Real y2, Real x, Real y);
void curve_to_smooth(Real x2, Real y2, Real x, Real y); //x1,y1 derived from current tangent
void close();
void endpath();
virtual bool set_param(const String & param, const synfig::ValueBase &value);
virtual ValueBase get_param(const String & param)const;
virtual Vocab get_param_vocab()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 synfig::Layer::Handle hit_check(synfig::Context context, const synfig::Point &point)const;
virtual Rect get_bounding_rect()const;
private:
class PolySpan;
bool render_polyspan(Surface *surface,PolySpan &polyspan,
Color::BlendMethod method,Color::value_type amount)const;
bool render_polyspan(etl::surface<float> *surface,PolySpan &polyspan)const;
virtual bool render_shape(Surface *surface,bool useblend,int quality,const RendDesc &renddesc, ProgressCallback *cb)const;
virtual bool render_shape(etl::surface<float> *surface,int quality,const RendDesc &renddesc, ProgressCallback *cb)const;
}; // END of Layer_Shape
}; // END of namespace synfig
/* === E N D =============================================================== */
#endif