ReactOS 0.4.15-dev-8131-g4988de4
knotvector.h
Go to the documentation of this file.
1/*
2 * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
3 * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the "Software"),
7 * to deal in the Software without restriction, including without limitation
8 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
9 * and/or sell copies of the Software, and to permit persons to whom the
10 * Software is furnished to do so, subject to the following conditions:
11 *
12 * The above copyright notice including the dates of first publication and
13 * either this permission notice or a reference to
14 * http://oss.sgi.com/projects/FreeB/
15 * shall be included in all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
21 * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
22 * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
23 * SOFTWARE.
24 *
25 * Except as contained in this notice, the name of Silicon Graphics, Inc.
26 * shall not be used in advertising or otherwise to promote the sale, use or
27 * other dealings in this Software without prior written authorization from
28 * Silicon Graphics, Inc.
29 */
30
31/*
32 * knotvector.h
33 *
34 */
35
36#ifndef __gluknotvector_h_
37#define __gluknotvector_h_
38
39#include "types.h"
40
41struct Knotvector { /* a knot vector */
42 Knotvector( void );
43 ~Knotvector( void );
44 void init( long, long, long, INREAL * );
45 int validate( void );
46 void show( const char * );
47
48 long order; /* order of spline */
49 long knotcount; /* number of knots */
50 long stride; /* bytes between points */
51 Knot * knotlist; /* global knot vector */
52};
53
54/* tolerance to test knot coincidence */
55#define TOLERANCE 1.0e-5
56
57inline int
59{
60 return ((x-y) < TOLERANCE) ? 1 : 0;
61}
62#endif /* __gluknotvector_h_ */
#define INREAL
Definition: types.h:40
REAL Knot
Definition: types.h:45
GLint GLint GLint GLint GLint x
Definition: gl.h:1548
GLint GLint GLint GLint GLint GLint y
Definition: gl.h:1548
#define TOLERANCE
Definition: knotvector.h:55
int identical(Knot x, Knot y)
Definition: knotvector.h:58
void show(const char *)
Definition: knotvector.cc:132
int validate(void)
Definition: knotvector.cc:75
long order
Definition: knotvector.h:48
long stride
Definition: knotvector.h:50
~Knotvector(void)
Definition: knotvector.cc:70
Knotvector(void)
Definition: knotvector.cc:62
long knotcount
Definition: knotvector.h:49
Knot * knotlist
Definition: knotvector.h:51
static int init
Definition: wintirpc.c:33