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 * trimregion.h
33 *
34 */
35
36#ifndef __glutrimregion_h_
37#define __glutrimregion_h_
38
39#include "trimline.h"
40#include "gridline.h"
41#include "uarray.h"
42
43class Arc;
44class Backend;
45
46class TrimRegion {
47public:
48			TrimRegion();
49    Trimline		left;
50    Trimline		right;
51    Gridline		top;
52    Gridline		bot;
53    Uarray		uarray;
54
55    void		init( REAL );
56    void		advance( REAL, REAL, REAL );
57    void		setDu( REAL );
58    void		init( long, Arc_ptr );
59    void		getPts( Arc_ptr );
60    void		getPts( Backend & );
61    void		getGridExtent( TrimVertex *, TrimVertex * );
62    void		getGridExtent( void );
63    int			canTile( void );
64private:
65    REAL		oneOverDu;
66};
67
68inline void
69TrimRegion::init( REAL vval )
70{
71    bot.vval = vval;
72}
73
74inline void
75TrimRegion::advance( REAL topVindex, REAL botVindex, REAL botVval )
76{
77    top.vindex	= (long) topVindex;
78    bot.vindex	= (long) botVindex;
79    top.vval	= bot.vval;
80    bot.vval	= botVval;
81    top.ustart	= bot.ustart;
82    top.uend	= bot.uend;
83}
84#endif /* __glutrimregion_h_ */
85