Bullet Collision Detection & Physics Library
src
BulletCollision
Gimpact
gim_bitset.h
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#ifndef GIM_BITSET_H_INCLUDED
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#define GIM_BITSET_H_INCLUDED
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/*
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-----------------------------------------------------------------------------
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This source file is part of GIMPACT Library.
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For the latest info, see http://gimpact.sourceforge.net/
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Copyright (c) 2006 Francisco Leon Najera. C.C. 80087371.
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email: projectileman@yahoo.com
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This library is free software; you can redistribute it and/or
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modify it under the terms of EITHER:
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(1) The GNU Lesser General Public License as published by the Free
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Software Foundation; either version 2.1 of the License, or (at
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your option) any later version. The text of the GNU Lesser
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General Public License is included with this library in the
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file GIMPACT-LICENSE-LGPL.TXT.
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(2) The BSD-style license that is included with this library in
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the file GIMPACT-LICENSE-BSD.TXT.
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(3) The zlib/libpng license that is included with this library in
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the file GIMPACT-LICENSE-ZLIB.TXT.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the files
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GIMPACT-LICENSE-LGPL.TXT, GIMPACT-LICENSE-ZLIB.TXT and GIMPACT-LICENSE-BSD.TXT for more details.
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-----------------------------------------------------------------------------
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*/
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#include "
gim_array.h
"
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#define GUINT_BIT_COUNT 32
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#define GUINT_EXPONENT 5
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class
gim_bitset
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{
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public
:
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gim_array<GUINT>
m_container
;
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gim_bitset
()
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{
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}
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gim_bitset
(
GUINT
bits_count)
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{
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resize
(bits_count);
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}
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~gim_bitset
()
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{
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}
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inline
bool
resize
(
GUINT
newsize)
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{
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GUINT
oldsize =
m_container
.
size
();
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m_container
.
resize
(newsize /
GUINT_BIT_COUNT
+ 1,
false
);
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while
(oldsize <
m_container
.
size
())
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{
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m_container
[oldsize] = 0;
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}
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return
true
;
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}
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inline
GUINT
size
()
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{
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return
m_container
.
size
() *
GUINT_BIT_COUNT
;
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}
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inline
void
set_all
()
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{
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for
(
GUINT
i = 0; i <
m_container
.
size
(); ++i)
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{
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m_container
[i] = 0xffffffff;
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}
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}
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inline
void
clear_all
()
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{
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for
(
GUINT
i = 0; i <
m_container
.
size
(); ++i)
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{
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m_container
[i] = 0;
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}
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}
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inline
void
set
(
GUINT
bit_index)
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{
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if
(bit_index >=
size
())
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{
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resize
(bit_index);
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}
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m_container
[bit_index >>
GUINT_EXPONENT
] |= (1 << (bit_index & (
GUINT_BIT_COUNT
- 1)));
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}
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inline
char
get
(
GUINT
bit_index)
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{
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if
(bit_index >=
size
())
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{
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return
0;
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}
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char
value =
m_container
[bit_index >>
GUINT_EXPONENT
] &
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(1 << (bit_index & (
GUINT_BIT_COUNT
- 1)));
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return
value;
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}
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inline
void
clear
(
GUINT
bit_index)
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{
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m_container
[bit_index >>
GUINT_EXPONENT
] &= ~(1 << (bit_index & (
GUINT_BIT_COUNT
- 1)));
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}
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};
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#endif // GIM_CONTAINERS_H_INCLUDED
gim_array< GUINT >
gim_array.h
GUINT
#define GUINT
Definition:
gim_math.h:40
gim_bitset::gim_bitset
gim_bitset()
Definition:
gim_bitset.h:45
GUINT_BIT_COUNT
#define GUINT_BIT_COUNT
Definition:
gim_bitset.h:37
gim_bitset::set_all
void set_all()
Definition:
gim_bitset.h:74
gim_bitset
Definition:
gim_bitset.h:40
gim_bitset::set
void set(GUINT bit_index)
Definition:
gim_bitset.h:90
gim_bitset::resize
bool resize(GUINT newsize)
Definition:
gim_bitset.h:58
gim_bitset::clear_all
void clear_all()
Definition:
gim_bitset.h:82
gim_bitset::m_container
gim_array< GUINT > m_container
Definition:
gim_bitset.h:43
GUINT_EXPONENT
#define GUINT_EXPONENT
Definition:
gim_bitset.h:38
gim_bitset::gim_bitset
gim_bitset(GUINT bits_count)
Definition:
gim_bitset.h:49
gim_bitset::~gim_bitset
~gim_bitset()
Definition:
gim_bitset.h:54
gim_array::resize
void resize(GUINT size, bool call_constructor=true, const T &fillData=T())
Definition:
gim_array.h:287
gim_bitset::clear
void clear(GUINT bit_index)
Definition:
gim_bitset.h:111
gim_array::size
GUINT size() const
Definition:
gim_array.h:143
gim_bitset::size
GUINT size()
Definition:
gim_bitset.h:69
gim_bitset::get
char get(GUINT bit_index)
Return 0 or 1.
Definition:
gim_bitset.h:100
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