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55 lines
1.4 KiB
C++
55 lines
1.4 KiB
C++
//----------------------------------------------------------------------------
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// Anti-Grain Geometry - Version 2.4
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// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
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//
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// Permission to copy, use, modify, sell and distribute this software
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// is granted provided this copyright notice appears in all copies.
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// This software is provided "as is" without express or implied
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// warranty, and with no claim as to its suitability for any purpose.
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//
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//----------------------------------------------------------------------------
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// Contact: mcseem@antigrain.com
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// mcseemagg@yahoo.com
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// http://www.antigrain.com
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//----------------------------------------------------------------------------
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#ifndef AGG_BITSET_ITERATOR_INCLUDED
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#define AGG_BITSET_ITERATOR_INCLUDED
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#include "agg_basics.h"
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namespace agg
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{
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class bitset_iterator
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{
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public:
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bitset_iterator(const int8u* bits, unsigned offset = 0) :
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m_bits(bits + (offset >> 3)),
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m_mask(0x80 >> (offset & 7))
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{}
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void operator ++ ()
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{
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m_mask >>= 1;
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if(m_mask == 0)
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{
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++m_bits;
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m_mask = 0x80;
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}
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}
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unsigned bit() const
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{
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return (*m_bits) & m_mask;
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}
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private:
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const int8u* m_bits;
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int8u m_mask;
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};
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}
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#endif
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