/*
 * This program 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 program 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */

#ifndef __BEZIER_H__
#define __BEZIER_H__

/** \file
 * \ingroup freestyle
 * \brief Class to define a Bezier curve of order 4.
 */

#include <vector>

#include "Geom.h"

#include "../system/FreestyleConfig.h"

#ifdef WITH_CXX_GUARDEDALLOC
#  include "MEM_guardedalloc.h"
#endif

namespace Freestyle {

using namespace Geometry;

class BezierCurveSegment {
 private:
  std::vector<Vec2d> _ControlPolygon;
  std::vector<Vec2d> _Vertices;

 public:
  BezierCurveSegment();
  virtual ~BezierCurveSegment();

  void AddControlPoint(const Vec2d &iPoint);
  void Build();

  inline int size() const
  {
    return _ControlPolygon.size();
  }

  inline std::vector<Vec2d> &vertices()
  {
    return _Vertices;
  }

#ifdef WITH_CXX_GUARDEDALLOC
  MEM_CXX_CLASS_ALLOC_FUNCS("Freestyle:BezierCurveSegment")
#endif
};

class BezierCurve {
 private:
  std::vector<Vec2d> _ControlPolygon;
  std::vector<BezierCurveSegment *> _Segments;
  BezierCurveSegment *_currentSegment;

 public:
  BezierCurve();
  BezierCurve(std::vector<Vec2d> &iPoints, double error = 4.0);
  virtual ~BezierCurve();

  void AddControlPoint(const Vec2d &iPoint);

  std::vector<Vec2d> &controlPolygon()
  {
    return _ControlPolygon;
  }

  std::vector<BezierCurveSegment *> &segments()
  {
    return _Segments;
  }

#ifdef WITH_CXX_GUARDEDALLOC
  MEM_CXX_CLASS_ALLOC_FUNCS("Freestyle:BezierCurve")
#endif
};

} /* namespace Freestyle */

#endif  // __BEZIER_H__
