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
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
|
/*
*
* Copyright (C) 2000 Silicon Graphics, Inc. All Rights Reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* Further, this software is distributed without any warranty that it is
* free of the rightful claim of any third person regarding infringement
* or the like. Any license provided herein, whether implied or
* otherwise, applies only to this software file. Patent licenses, if
* any, provided herein do not apply to combinations of this program with
* other software, or any other product whatsoever.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
* Mountain View, CA 94043, or:
*
* http://www.sgi.com
*
* For further information regarding this notice, see:
*
* http://oss.sgi.com/projects/GenInfo/NoticeExplan/
*
*/
// -*- C++ -*-
/*
* Copyright (C) 1990,91 Silicon Graphics, Inc.
*
_______________________________________________________________________
______________ S I L I C O N G R A P H I C S I N C . ____________
|
| $Revision: 1.1.1.1 $
|
| Description:
| This file defines the SoBoundingBoxCache class, which is used for
| storing caches during GL rendering.
|
| Author(s) : Paul S. Strauss
|
______________ S I L I C O N G R A P H I C S I N C . ____________
_______________________________________________________________________
*/
// C-api: end
#ifndef _SO_BOUNDING_BOX_CACHE
#define _SO_BOUNDING_BOX_CACHE
#include <Inventor/SbBox.h>
#include <Inventor/caches/SoCache.h>
////////////////////////////////////////////////////////////////////////
//
// Class SoBoundingBoxCache:
//
// A bounding box cache stores a bounding box and center point. It
// also stores a flag indicating whether the box contains any line or
// point objects, meaning that intersection tests with the box should
// use a little extra leeway.
//
////////////////////////////////////////////////////////////////////////
SoEXTENDER class SoBoundingBoxCache : public SoCache {
public:
// Constructor and destructor
SoBoundingBoxCache(SoState *state);
~SoBoundingBoxCache();
// Stores a bounding box and center point in the cache
void set(const SbXfBox3f &boundingBox,
SbBool centerSet,
const SbVec3f ¢erPoint);
const SbXfBox3f & getBox() const { return box; }
const SbBox3f & getProjectedBox() const { return projectedBox; }
// Returns TRUE if the center is valid.
SbBool isCenterSet() const { return centerSet; }
// Returns the center (in object space)
const SbVec3f & getCenter() const { return center; }
// Sets the hasLinesOrPoints flag to TRUE in all open bounding box
// caches in the given state. (The flag is FALSE by default.)
static void setHasLinesOrPoints(SoState *state);
// Returns the hasLinesOrPoints flag
SbBool hasLinesOrPoints() const { return hasLOrP; }
private:
SbXfBox3f box; // Bounding box
SbBox3f projectedBox; // Box in local space
SbBool centerSet; // If the center was set
SbVec3f center; // Center point
SbBool hasLOrP; // TRUE if contains lines or points
};
#endif /* _SO_BOUNDING_BOX_CACHE */
|
