2 bezier.hh -- declare Bezier and Bezier_bow
4 (c) 1998--2009 Jan Nieuwenhuizen <janneke@gnu.org>
10 #include "interval.hh"
12 #include "polynomial.hh"
20 void assert_sanity () const;
21 void scale (Real x, Real y);
24 void translate (Offset);
25 void subdivide (Real, Bezier &, Bezier &);
26 Bezier extract (Real, Real);
28 Real get_other_coordinate (Axis a, Real x) const;
29 vector<Real> solve_point (Axis, Real coordinate) const;
30 vector<Real> solve_derivative (Offset) const;
31 Interval extent (Axis) const;
32 Interval control_point_extent (Axis) const;
34 Polynomial polynomial (Axis)const;
35 Offset curve_point (Real t) const;
36 Real curve_coordinate (Real t, Axis) const;
38 static const int CONTROL_COUNT = 4;
41 Bezier curves always have 4 control points. Making this into an
42 vector<> gives unnecessary overhead, and makes debugging a royal
48 void scale (vector<Offset> *array, Real xscale, Real yscale);
49 void rotate (vector<Offset> *array, Real phi);
50 void translate (vector<Offset> *array, Offset o);
52 Bezier slur_shape (Real width, Real height_limit,
53 Real height_proportion);
54 Real slur_height (Real width, Real height_limit, Real height_proportion);
55 void get_slur_indent_height (Real *indent, Real *height, Real width, Real h_inf, Real r_0);