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3144ee8a AT |
1 | /* |
2 | * Copyright (c) 1987, 1988, 1989 Stanford University | |
3 | * | |
4 | * Permission to use, copy, modify, distribute, and sell this software and its | |
5 | * documentation for any purpose is hereby granted without fee, provided | |
6 | * that the above copyright notice appear in all copies and that both that | |
7 | * copyright notice and this permission notice appear in supporting | |
8 | * documentation, and that the name of Stanford not be used in advertising or | |
9 | * publicity pertaining to distribution of the software without specific, | |
10 | * written prior permission. Stanford makes no representations about | |
11 | * the suitability of this software for any purpose. It is provided "as is" | |
12 | * without express or implied warranty. | |
13 | * | |
14 | * STANFORD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, | |
15 | * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. | |
16 | * IN NO EVENT SHALL STANFORD BE LIABLE FOR ANY SPECIAL, INDIRECT OR | |
17 | * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, | |
18 | * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR | |
19 | * OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION | |
20 | * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
21 | */ | |
22 | ||
23 | /* This code came with the InterViews distribution, and was translated | |
24 | from C++ to C by Matthieu Devin <devin@lucid.com> some time in 1992. | |
25 | */ | |
26 | ||
27 | #ifndef _SPLINE_H_ | |
28 | #define _SPLINE_H_ | |
29 | ||
30 | typedef struct _spline | |
31 | { | |
32 | /* input */ | |
33 | unsigned int n_controls; | |
34 | double* control_x; | |
35 | double* control_y; | |
36 | ||
37 | /* output */ | |
38 | unsigned int n_points; | |
39 | XPoint* points; | |
40 | unsigned int allocated_points; | |
41 | } spline; | |
42 | ||
43 | spline* make_spline (unsigned int size); | |
44 | void compute_spline (spline* s); | |
45 | void compute_closed_spline (spline* s); | |
46 | void just_fill_spline (spline* s); | |
47 | void append_spline_points (spline* s1, spline* s2); | |
48 | void spline_bounding_box (spline* s, XRectangle* rectangle_out); | |
49 | void free_spline(spline *s); | |
50 | ||
51 | #endif /* _SPLINE_H_ */ |