Repo created

3party/agg/agg_bitset_iterator.h

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+//----------------------------------------------------------------------------
+// Anti-Grain Geometry - Version 2.4
+// 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