2 Copyright (C) 2013 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
19 #ifndef __CANVAS_CURVE_H__
20 #define __CANVAS_CURVE_H__
22 #include "canvas/poly_item.h"
24 namespace ArdourCanvas {
26 class Curve : public PolyItem
31 void compute_bounding_box () const;
33 void render (Rect const & area, Cairo::RefPtr<Cairo::Context>) const;
35 void set (Points const &);
38 void render_path (Rect const &, Cairo::RefPtr<Cairo::Context>) const;
39 void render_curve (Rect const &, Cairo::RefPtr<Cairo::Context>) const;
42 Points first_control_points;
43 Points second_control_points;
46 static void compute_control_points (Points const &,
48 static double* solve (std::vector<double> const&);