63 lines
2.1 KiB
C
63 lines
2.1 KiB
C
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#ifndef _SPLINE_H_
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#define _SPLINE_H_
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#if !defined( lint ) && !defined( SABER )
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/* #ident "@(#)spline.h 4.14 99/06/17 xlockmore" */
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#endif
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/*-
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* Spline stuff
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*
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* Revision History:
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* 17-06-99: Started log. :)
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*/
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/*
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* Copyright (c) 1987, 1988, 1989 Stanford University
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided
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* that the above copyright notice appear in all copies and that both that
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* copyright notice and this permission notice appear in supporting
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* documentation, and that the name of Stanford not be used in advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. Stanford makes no representations about
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* the suitability of this software for any purpose. It is provided "as is"
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* without express or implied warranty.
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*
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* STANFORD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS.
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* IN NO EVENT SHALL STANFORD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
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* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
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* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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/* This code came with the InterViews distribution, and was translated
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from C++ to C by Matthieu Devin <devin@lucid.com> some time in 1992.
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*/
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typedef struct {
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/* input */
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unsigned int n_controls;
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double *control_x;
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double *control_y;
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/* output */
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unsigned int n_points;
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XPoint *points;
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unsigned int allocated_points;
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} spline;
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spline *make_spline(unsigned int size);
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void compute_spline(spline * s);
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void compute_closed_spline(spline * s);
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void just_fill_spline(spline * s);
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void append_spline_points(spline * s1, spline * s2);
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void spline_bounding_box(spline * s, XRectangle * rectangle_out);
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void free_spline(spline * s);
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#endif /* _SPLINE_H_ */
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