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 
43 class Arc;
44 class Backend;
45 
46 class TrimRegion {
47 public:
48 			TrimRegion();
49 #if defined(__REACTOS__) && defined(__clang__)
50     /* FIXME: Inspect */
51     ~TrimRegion( void ) {}
52 #endif
53     Trimline		left;
54     Trimline		right;
55     Gridline		top;
56     Gridline		bot;
57     Uarray		uarray;
58 
59     void		init( REAL );
60     void		advance( REAL, REAL, REAL );
61     void		setDu( REAL );
62     void		init( long, Arc_ptr );
63     void		getPts( Arc_ptr );
64     void		getPts( Backend & );
65     void		getGridExtent( TrimVertex *, TrimVertex * );
66     void		getGridExtent( void );
67     int			canTile( void );
68 private:
69     REAL		oneOverDu;
70 };
71 
72 inline void
73 TrimRegion::init( REAL vval )
74 {
75     bot.vval = vval;
76 }
77 
78 inline void
79 TrimRegion::advance( REAL topVindex, REAL botVindex, REAL botVval )
80 {
81     top.vindex	= (long) topVindex;
82     bot.vindex	= (long) botVindex;
83     top.vval	= bot.vval;
84     bot.vval	= botVval;
85     top.ustart	= bot.ustart;
86     top.uend	= bot.uend;
87 }
88 #endif /* __glutrimregion_h_ */
89