/*
This file is part of Curvaceous, a Bzier drawing demo
Copyright (C) 1992-2006 Toby Thain, toby@telegraphics.com.au
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef CURVETO_H
#define CURVETO_H
#ifdef macintosh
#include <quickdraw.h>
#include <fp.h>
#endif
#define F(x) ((x)<<16) /* integer as Fixed */
#define I(x) ((x)>>16) /* (truncated) Fixed as integer */
#define P(p) I((p).x),I((p).y)
#define FIX_FLOOR I
#define FIX_CEIL(x) I((x)+0xffff)
#define FIX_ROUND(x) I((x)+0x8000)
typedef struct{ Fixed x,y; }pt; /* a fixed-point analogue to Point */
pt fpt(int x,int y);
void mid(pt *a,pt *b,pt *c);
void curve_bounds_fix(pt c[],Fixed *l,Fixed *t,Fixed *r,Fixed *b);
void curve_bounds(pt c[],Rect *r);
void divide_curve(pt c[],pt z[]);
int sgn(int x);
double sqr(double x);
int curve_step(pt c[],pt z[]);
int curve_step2(pt c[],pt z[],int d);
void curveto(pt c[]);
void curveto_rgn(pt c[],RgnHandle rgn);
Boolean curve_pick(pt c[],pt *p,Fixed tol,Fixed *t);
Boolean curve_pick_step(pt c[],pt *p,Fixed tol,Fixed *param,Fixed p0,Fixed p1);
void mark(pt *p,Boolean f);
void curveto2(pt c[],int d);// draw the entire curve described by c[0..3]
#endif // CURVETO_H