Details | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
259 | daniel-mar | 1 | /* |
2 | This file is part of Curvaceous, a Bˇzier drawing demo |
||
3 | Copyright (C) 1992-2006 Toby Thain, toby@telegraphics.com.au |
||
4 | |||
5 | This program is free software; you can redistribute it and/or modify |
||
6 | it under the terms of the GNU General Public License as published by |
||
7 | the Free Software Foundation; either version 2 of the License, or |
||
8 | (at your option) any later version. |
||
9 | |||
10 | This program is distributed in the hope that it will be useful, |
||
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
||
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
||
13 | GNU General Public License for more details. |
||
14 | |||
15 | You should have received a copy of the GNU General Public License |
||
16 | along with this program; if not, write to the Free Software |
||
17 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
||
18 | */ |
||
19 | |||
20 | #ifndef CURVETO_H |
||
21 | #define CURVETO_H |
||
22 | |||
23 | #ifdef macintosh |
||
24 | #include <quickdraw.h> |
||
25 | #include <fp.h> |
||
26 | #endif |
||
27 | |||
28 | #define F(x) ((x)<<16) /* integer as Fixed */ |
||
29 | #define I(x) ((x)>>16) /* (truncated) Fixed as integer */ |
||
30 | #define P(p) I((p).x),I((p).y) |
||
31 | |||
32 | #define FIX_FLOOR I |
||
33 | #define FIX_CEIL(x) I((x)+0xffff) |
||
34 | #define FIX_ROUND(x) I((x)+0x8000) |
||
35 | |||
36 | typedef struct{ Fixed x,y; }pt; /* a fixed-point analogue to Point */ |
||
37 | |||
38 | pt fpt(int x,int y); |
||
39 | void mid(pt *a,pt *b,pt *c); |
||
40 | void curve_bounds_fix(pt c[],Fixed *l,Fixed *t,Fixed *r,Fixed *b); |
||
41 | void curve_bounds(pt c[],Rect *r); |
||
42 | void divide_curve(pt c[],pt z[]); |
||
43 | int sgn(int x); |
||
44 | double sqr(double x); |
||
45 | int curve_step(pt c[],pt z[]); |
||
46 | int curve_step2(pt c[],pt z[],int d); |
||
47 | void curveto(pt c[]); |
||
48 | void curveto_rgn(pt c[],RgnHandle rgn); |
||
49 | Boolean curve_pick(pt c[],pt *p,Fixed tol,Fixed *t); |
||
50 | Boolean curve_pick_step(pt c[],pt *p,Fixed tol,Fixed *param,Fixed p0,Fixed p1); |
||
51 | void mark(pt *p,Boolean f); |
||
52 | |||
53 | void curveto2(pt c[],int d);// draw the entire curve described by c[0..3] |
||
54 | |||
55 | #endif // CURVETO_H |