55 lines
1.4 KiB
C
55 lines
1.4 KiB
C
|
//----------------------------------------------------------------------------
|
||
|
|
// Anti-Grain Geometry - Version 2.2
|
||
|
|
// Copyright (C) 2002-2004 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
|