1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
|
/*
* Mesa 3-D graphics library
* Version: 3.3
*
* Copyright (C) 1999-2000 Brian Paul All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/*
* New (3.1) transformation code written by Keith Whitwell.
*/
#define PLANE CLIP_RIGHT_BIT
#define CLIP_DOTPROD(K) (- X(K) + W(K))
GENERAL_CLIP
#undef CLIP_DOTPROD
#undef PLANE
#define PLANE CLIP_LEFT_BIT
#define CLIP_DOTPROD(K) (X(K) + W(K))
GENERAL_CLIP
#undef CLIP_DOTPROD
#undef PLANE
#define PLANE CLIP_TOP_BIT
#define CLIP_DOTPROD(K) (- Y(K) + W(K))
GENERAL_CLIP
#undef CLIP_DOTPROD
#undef PLANE
#define PLANE CLIP_BOTTOM_BIT
#define CLIP_DOTPROD(K) (Y(K) + W(K))
GENERAL_CLIP
#undef CLIP_DOTPROD
#undef PLANE
#define PLANE CLIP_FAR_BIT
#define CLIP_DOTPROD(K) (- Z(K) + W(K))
if (SIZE >= 3) {
GENERAL_CLIP
}
#undef CLIP_DOTPROD
#undef PLANE
#define PLANE CLIP_NEAR_BIT
#define CLIP_DOTPROD(K) (Z(K) + W(K))
if (SIZE >=3 ) {
GENERAL_CLIP
}
#undef CLIP_DOTPROD
#undef PLANE
#undef GENERAL_CLIP
|
