diff options
Diffstat (limited to 'agg/inc/agg_bitset_iterator.h')
-rwxr-xr-x | agg/inc/agg_bitset_iterator.h | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/agg/inc/agg_bitset_iterator.h b/agg/inc/agg_bitset_iterator.h new file mode 100755 index 000000000000..543432b65d54 --- /dev/null +++ b/agg/inc/agg_bitset_iterator.h @@ -0,0 +1,54 @@ +//---------------------------------------------------------------------------- +// Anti-Grain Geometry - Version 2.3 +// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com) +// +// Permission to copy, use, modify, sell and distribute this software +// is granted provided this copyright notice appears in all copies. +// This software is provided "as is" without express or implied +// warranty, and with no claim as to its suitability for any purpose. +// +//---------------------------------------------------------------------------- +// Contact: mcseem@antigrain.com +// mcseemagg@yahoo.com +// http://www.antigrain.com +//---------------------------------------------------------------------------- + +#ifndef AGG_BITSET_ITERATOR_INCLUDED +#define AGG_BITSET_ITERATOR_INCLUDED + +#include "agg_basics.h" + +namespace agg +{ + + class bitset_iterator + { + public: + bitset_iterator(const int8u* bits, unsigned offset = 0) : + m_bits(bits + (offset >> 3)), + m_mask(0x80 >> (offset & 7)) + {} + + void operator ++ () + { + m_mask >>= 1; + if(m_mask == 0) + { + ++m_bits; + m_mask = 0x80; + } + } + + unsigned bit() const + { + return (*m_bits) & m_mask; + } + + private: + const int8u* m_bits; + int8u m_mask; + }; + +} + +#endif |