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/*
Copyright (C) 2013 Paul Davis
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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef __CANVAS_CURVE_H__
#define __CANVAS_CURVE_H__
#include "canvas/poly_item.h"
namespace ArdourCanvas {
class Curve : public PolyItem
{
public:
Curve (Group *);
void compute_bounding_box () const;
void render (Rect const & area, Cairo::RefPtr<Cairo::Context>) const;
void set (Points const &);
protected:
void render_path (Rect const &, Cairo::RefPtr<Cairo::Context>) const;
void render_curve (Rect const &, Cairo::RefPtr<Cairo::Context>) const;
private:
Points first_control_points;
Points second_control_points;
static void compute_control_points (Points const &,
Points&, Points&);
static double* solve (std::vector<double> const&);
};
}
#endif
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