1//----------------------------------------------------------------------------
2// Anti-Grain Geometry - Version 2.4
3// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
4//
5// Permission to copy, use, modify, sell and distribute this software
6// is granted provided this copyright notice appears in all copies.
7// This software is provided "as is" without express or implied
8// warranty, and with no claim as to its suitability for any purpose.
9//
10//----------------------------------------------------------------------------
11// Contact: mcseem@antigrain.com
12//          mcseemagg@yahoo.com
13//          http://www.antigrain.com
14//----------------------------------------------------------------------------
15
16#ifndef AGG_SPAN_CONVERTER_INCLUDED
17#define AGG_SPAN_CONVERTER_INCLUDED
18
19#include "agg_basics.h"
20
21namespace agg
22{
23    //----------------------------------------------------------span_converter
24    template<class SpanGenerator, class SpanConverter> class span_converter
25    {
26    public:
27        typedef typename SpanGenerator::color_type color_type;
28
29        span_converter(SpanGenerator& span_gen, SpanConverter& span_cnv) :
30            m_span_gen(&span_gen), m_span_cnv(&span_cnv) {}
31
32        void attach_generator(SpanGenerator& span_gen) { m_span_gen = &span_gen; }
33        void attach_converter(SpanConverter& span_cnv) { m_span_cnv = &span_cnv; }
34
35        //--------------------------------------------------------------------
36        void prepare()
37        {
38            m_span_gen->prepare();
39            m_span_cnv->prepare();
40        }
41
42        //--------------------------------------------------------------------
43        void generate(color_type* span, int x, int y, unsigned len)
44        {
45            m_span_gen->generate(span, x, y, len);
46            m_span_cnv->generate(span, x, y, len);
47        }
48
49    private:
50        SpanGenerator* m_span_gen;
51        SpanConverter* m_span_cnv;
52    };
53
54}
55
56#endif
57