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source: code/trunk/src/external/bullet/BulletCollision/Gimpact/gim_bitset.h @ 6273

Last change on this file since 6273 was 5781, checked in by rgrieder, 15 years ago

Reverted trunk again. We might want to find a way to delete these revisions again (x3n's changes are still available as diff in the commit mails).

  • Property svn:eol-style set to native
File size: 2.7 KB
RevLine 
[2431]1#ifndef GIM_BITSET_H_INCLUDED
2#define GIM_BITSET_H_INCLUDED
3/*! \file gim_bitset.h
4\author Francisco Len Nßjera
5*/
6/*
7-----------------------------------------------------------------------------
8This source file is part of GIMPACT Library.
9
10For the latest info, see http://gimpact.sourceforge.net/
11
12Copyright (c) 2006 Francisco Leon Najera. C.C. 80087371.
13email: projectileman@yahoo.com
14
15 This library is free software; you can redistribute it and/or
16 modify it under the terms of EITHER:
17   (1) The GNU Lesser General Public License as published by the Free
18       Software Foundation; either version 2.1 of the License, or (at
19       your option) any later version. The text of the GNU Lesser
20       General Public License is included with this library in the
21       file GIMPACT-LICENSE-LGPL.TXT.
22   (2) The BSD-style license that is included with this library in
23       the file GIMPACT-LICENSE-BSD.TXT.
24   (3) The zlib/libpng license that is included with this library in
25       the file GIMPACT-LICENSE-ZLIB.TXT.
26
27 This library is distributed in the hope that it will be useful,
28 but WITHOUT ANY WARRANTY; without even the implied warranty of
29 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the files
30 GIMPACT-LICENSE-LGPL.TXT, GIMPACT-LICENSE-ZLIB.TXT and GIMPACT-LICENSE-BSD.TXT for more details.
31
32-----------------------------------------------------------------------------
33*/
34
35#include "gim_array.h"
36
37
38#define GUINT_BIT_COUNT 32
39#define GUINT_EXPONENT 5
40
41class gim_bitset
42{
43public:
44    gim_array<GUINT> m_container;
45
46    gim_bitset()
47    {
48
49    }
50
51    gim_bitset(GUINT bits_count)
52    {
53        resize(bits_count);
54    }
55
56    ~gim_bitset()
57    {
58    }
59
60        inline bool resize(GUINT newsize)
61        {
62                GUINT oldsize = m_container.size();
63                m_container.resize(newsize/GUINT_BIT_COUNT + 1,false);
64                while(oldsize<m_container.size())
65                {
66                        m_container[oldsize] = 0;
67                }
68                return true;
69        }
70
71        inline GUINT size()
72        {
73                return m_container.size()*GUINT_BIT_COUNT;
74        }
75
76        inline void set_all()
77        {
78                for(GUINT i = 0;i<m_container.size();++i)
79                {
80                        m_container[i] = 0xffffffff;
81                }
82        }
83
84        inline void clear_all()
85        {
86            for(GUINT i = 0;i<m_container.size();++i)
87                {
88                        m_container[i] = 0;
89                }
90        }
91
92        inline void set(GUINT bit_index)
93        {
94                if(bit_index>=size())
95                {
96                        resize(bit_index);
97                }
98                m_container[bit_index >> GUINT_EXPONENT] |= (1 << (bit_index & (GUINT_BIT_COUNT-1)));
99        }
100
101        ///Return 0 or 1
102        inline char get(GUINT bit_index)
103        {
104                if(bit_index>=size())
105                {
106                        return 0;
107                }
108                char value = m_container[bit_index >> GUINT_EXPONENT] &
109                                         (1 << (bit_index & (GUINT_BIT_COUNT-1)));
110                return value;
111        }
112
113        inline void clear(GUINT bit_index)
114        {
115            m_container[bit_index >> GUINT_EXPONENT] &= ~(1 << (bit_index & (GUINT_BIT_COUNT-1)));
116        }
117};
118
119
120
121
122
123#endif // GIM_CONTAINERS_H_INCLUDED
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