/*
bezier.hh -- declare Bezier and Bezier_bow
- (c) 1998--1999 Jan Nieuwenhuizen <janneke@gnu.org>
+ (c) 1998--2008 Jan Nieuwenhuizen <janneke@gnu.org>
*/
#ifndef BEZIER_HH
#define BEZIER_HH
-
-#include "real.hh"
-#include "drul-array.hh"
#include "interval.hh"
-#include "axes.hh"
#include "offset.hh"
-#include "array.hh"
#include "polynomial.hh"
/**
- Simple bezier curve
- */
+ Simple bezier curve
+*/
class Bezier
{
public:
- Bezier ();
-
+ void assert_sanity () const;
+ void scale (Real x, Real y);
+ void reverse ();
void rotate (Real);
void translate (Offset);
- void flip (Axis);
- void check_sanity () const;
+
Real get_other_coordinate (Axis a, Real x) const;
- Array<Real> solve_point (Axis, Real coordinate) const;
- Array<Real> solve_derivative (Offset) const;
- Interval extent (Axis)const;
+ vector<Real> solve_point (Axis, Real coordinate) const;
+ vector<Real> solve_derivative (Offset) const;
+ Interval extent (Axis) const;
+ Interval control_point_extent (Axis) const;
+
Polynomial polynomial (Axis)const;
Offset curve_point (Real t) const;
+ Real curve_coordinate (Real t, Axis) const;
static const int CONTROL_COUNT = 4;
- Offset control_[CONTROL_COUNT];
+
+ /*
+ Bezier curves always have 4 control points. Making this into an
+ vector<> gives unnecessary overhead, and makes debugging a royal
+ pain. */
+
+ Offset control_[4];
};
+void scale (vector<Offset> *array, Real xscale, Real yscale);
+void rotate (vector<Offset> *array, Real phi);
+void translate (vector<Offset> *array, Offset o);
+
+Bezier slur_shape (Real width, Real height_limit,
+ Real height_proportion);
+Real slur_height (Real width, Real height_limit, Real height_proportion);
+void get_slur_indent_height (Real *indent, Real *height, Real width, Real h_inf, Real r_0);
#endif // BEZIER_HH