Function render_scanlines_aa

renderers/agg/include/agg_renderer_scanline.h:180–192

    template<class Rasterizer, class Scanline, class BaseRenderer, 
             class SpanAllocator, class SpanGenerator>
    void render_scanlines_aa(Rasterizer& ras, Scanline& sl, BaseRenderer& ren, 
                             SpanAllocator& alloc, SpanGenerator& span_gen)
    {
        if(ras.rewind_scanlines())
        {
            sl.reset(ras.min_x(), ras.max_x());
            span_gen.prepare();
            while(ras.sweep_scanline(sl))
            {
                render_scanline_aa(sl, ren, alloc, span_gen);
            }
        }
    }

    //====================================================renderer_scanline_aa
    template<class BaseRenderer, class SpanAllocator, class SpanGenerator>