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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/visibility.h"
#include "canvas/interpolated_curve.h"
#include "canvas/poly_item.h"
#include "canvas/fill.h"
namespace ArdourCanvas {
class XFadeCurve;
class LIBCANVAS_API Curve : public PolyItem, public InterpolatedCurve
{
public:
Curve (Canvas*);
Curve (Item*);
enum CurveFill {
None,
Inside,
Outside,
};
void compute_bounding_box () const;
void render (Rect const & area, Cairo::RefPtr<Cairo::Context>) const;
void set (Points const &);
void set_points_per_segment (uint32_t n);
bool covers (Duple const &) const;
void set_fill_mode (CurveFill cf) { curve_fill = cf; }
private:
Points samples;
Points::size_type n_samples;
uint32_t points_per_segment;
InterpolatedCurve::SplineType curve_type;
CurveFill curve_fill;
void interpolate ();
};
}
#endif
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