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_ */ 52