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lib/haxebullet/bullet/BulletCollision/Gimpact/gim_bitset.h
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123
lib/haxebullet/bullet/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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/*! \file gim_bitset.h
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\author Francisco Leon Najera
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*/
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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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///Return 0 or 1
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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
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