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diff --git a/contrib/python/matplotlib/py3/extern/agg24-svn/include/agg_renderer_mclip.h b/contrib/python/matplotlib/py3/extern/agg24-svn/include/agg_renderer_mclip.h
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+++ b/contrib/python/matplotlib/py3/extern/agg24-svn/include/agg_renderer_mclip.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
+//----------------------------------------------------------------------------
+//
+// class renderer_mclip
+//
+//----------------------------------------------------------------------------
+
+#ifndef AGG_RENDERER_MCLIP_INCLUDED
+#define AGG_RENDERER_MCLIP_INCLUDED
+
+#include "agg_basics.h"
+#include "agg_array.h"
+#include "agg_renderer_base.h"
+
+namespace agg
+{
+
+    //----------------------------------------------------------renderer_mclip
+    template<class PixelFormat> class renderer_mclip
+    {
+    public:
+        typedef PixelFormat pixfmt_type;
+        typedef typename pixfmt_type::color_type color_type;
+        typedef typename pixfmt_type::row_data row_data;
+        typedef renderer_base<pixfmt_type> base_ren_type;
+
+        //--------------------------------------------------------------------
+        explicit renderer_mclip(pixfmt_type& pixf) :
+            m_ren(pixf),
+            m_curr_cb(0),
+            m_bounds(m_ren.xmin(), m_ren.ymin(), m_ren.xmax(), m_ren.ymax())
+        {}
+        void attach(pixfmt_type& pixf)
+        {
+            m_ren.attach(pixf);
+            reset_clipping(true);
+        }
+          
+        //--------------------------------------------------------------------
+        const pixfmt_type& ren() const { return m_ren.ren();  }
+        pixfmt_type& ren() { return m_ren.ren();  }
+
+        //--------------------------------------------------------------------
+        unsigned width()  const { return m_ren.width();  }
+        unsigned height() const { return m_ren.height(); }
+
+        //--------------------------------------------------------------------
+        const rect_i& clip_box() const { return m_ren.clip_box(); }
+        int           xmin()     const { return m_ren.xmin(); }
+        int           ymin()     const { return m_ren.ymin(); }
+        int           xmax()     const { return m_ren.xmax(); }
+        int           ymax()     const { return m_ren.ymax(); }
+
+        //--------------------------------------------------------------------
+        const rect_i& bounding_clip_box() const { return m_bounds;    }
+        int           bounding_xmin()     const { return m_bounds.x1; }
+        int           bounding_ymin()     const { return m_bounds.y1; }
+        int           bounding_xmax()     const { return m_bounds.x2; }
+        int           bounding_ymax()     const { return m_bounds.y2; }
+
+        //--------------------------------------------------------------------
+        void first_clip_box() 
+        {
+            m_curr_cb = 0;
+            if(m_clip.size())
+            {
+                const rect_i& cb = m_clip[0];
+                m_ren.clip_box_naked(cb.x1, cb.y1, cb.x2, cb.y2);
+            }
+        }
+
+        //--------------------------------------------------------------------
+        bool next_clip_box() 
+        { 
+            if(++m_curr_cb < m_clip.size())
+            {
+                const rect_i& cb = m_clip[m_curr_cb];
+                m_ren.clip_box_naked(cb.x1, cb.y1, cb.x2, cb.y2);
+                return true;
+            }
+            return false; 
+        }
+
+        //--------------------------------------------------------------------
+        void reset_clipping(bool visibility)
+        {
+            m_ren.reset_clipping(visibility);
+            m_clip.remove_all();
+            m_curr_cb = 0;
+            m_bounds = m_ren.clip_box();
+        }
+        
+        //--------------------------------------------------------------------
+        void add_clip_box(int x1, int y1, int x2, int y2)
+        {
+            rect_i cb(x1, y1, x2, y2); 
+            cb.normalize();
+            if(cb.clip(rect_i(0, 0, width() - 1, height() - 1)))
+            {
+                m_clip.add(cb);
+                if(cb.x1 < m_bounds.x1) m_bounds.x1 = cb.x1;
+                if(cb.y1 < m_bounds.y1) m_bounds.y1 = cb.y1;
+                if(cb.x2 > m_bounds.x2) m_bounds.x2 = cb.x2;
+                if(cb.y2 > m_bounds.y2) m_bounds.y2 = cb.y2;
+            }
+        }
+
+        //--------------------------------------------------------------------
+        void clear(const color_type& c)
+        {
+            m_ren.clear(c);
+        }
+          
+        //--------------------------------------------------------------------
+        void copy_pixel(int x, int y, const color_type& c)
+        {
+            first_clip_box();
+            do
+            {
+                if(m_ren.inbox(x, y))
+                {
+                    m_ren.ren().copy_pixel(x, y, c);
+                    break;
+                }
+            }
+            while(next_clip_box());
+        }
+
+        //--------------------------------------------------------------------
+        void blend_pixel(int x, int y, const color_type& c, cover_type cover)
+        {
+            first_clip_box();
+            do
+            {
+                if(m_ren.inbox(x, y))
+                {
+                    m_ren.ren().blend_pixel(x, y, c, cover);
+                    break;
+                }
+            }
+            while(next_clip_box());
+        }
+
+        //--------------------------------------------------------------------
+        color_type pixel(int x, int y) const
+        {
+            first_clip_box();
+            do
+            {
+                if(m_ren.inbox(x, y))
+                {
+                    return m_ren.ren().pixel(x, y);
+                }
+            }
+            while(next_clip_box());
+            return color_type::no_color();
+        }
+
+        //--------------------------------------------------------------------
+        void copy_hline(int x1, int y, int x2, const color_type& c)
+        {
+            first_clip_box();
+            do
+            {
+                m_ren.copy_hline(x1, y, x2, c);
+            }
+            while(next_clip_box());
+        }
+
+        //--------------------------------------------------------------------
+        void copy_vline(int x, int y1, int y2, const color_type& c)
+        {
+            first_clip_box();
+            do
+            {
+                m_ren.copy_vline(x, y1, y2, c);
+            }
+            while(next_clip_box());
+        }
+
+        //--------------------------------------------------------------------
+        void blend_hline(int x1, int y, int x2, 
+                         const color_type& c, cover_type cover)
+        {
+            first_clip_box();
+            do
+            {
+                m_ren.blend_hline(x1, y, x2, c, cover);
+            }
+            while(next_clip_box());
+        }
+
+        //--------------------------------------------------------------------
+        void blend_vline(int x, int y1, int y2, 
+                         const color_type& c, cover_type cover)
+        {
+            first_clip_box();
+            do
+            {
+                m_ren.blend_vline(x, y1, y2, c, cover);
+            }
+            while(next_clip_box());
+        }
+
+        //--------------------------------------------------------------------
+        void copy_bar(int x1, int y1, int x2, int y2, const color_type& c)
+        {
+            first_clip_box();
+            do
+            {
+                m_ren.copy_bar(x1, y1, x2, y2, c);
+            }
+            while(next_clip_box());
+        }
+
+        //--------------------------------------------------------------------
+        void blend_bar(int x1, int y1, int x2, int y2, 
+                       const color_type& c, cover_type cover)
+        {
+            first_clip_box();
+            do
+            {
+                m_ren.blend_bar(x1, y1, x2, y2, c, cover);
+            }
+            while(next_clip_box());
+        }
+
+        //--------------------------------------------------------------------
+        void blend_solid_hspan(int x, int y, int len, 
+                               const color_type& c, const cover_type* covers)
+        {
+            first_clip_box();
+            do
+            {
+                m_ren.blend_solid_hspan(x, y, len, c, covers);
+            }
+            while(next_clip_box());
+        }
+
+        //--------------------------------------------------------------------
+        void blend_solid_vspan(int x, int y, int len, 
+                               const color_type& c, const cover_type* covers)
+        {
+            first_clip_box();
+            do
+            {
+                m_ren.blend_solid_vspan(x, y, len, c, covers);
+            }
+            while(next_clip_box());
+        }
+
+
+        //--------------------------------------------------------------------
+        void copy_color_hspan(int x, int y, int len, const color_type* colors)
+        {
+            first_clip_box();
+            do
+            {
+                m_ren.copy_color_hspan(x, y, len, colors);
+            }
+            while(next_clip_box());
+        }
+
+        //--------------------------------------------------------------------
+        void blend_color_hspan(int x, int y, int len, 
+                               const color_type* colors, 
+                               const cover_type* covers,
+                               cover_type cover = cover_full)
+        {
+            first_clip_box();
+            do
+            {
+                m_ren.blend_color_hspan(x, y, len, colors, covers, cover);
+            }
+            while(next_clip_box());
+        }
+
+        //--------------------------------------------------------------------
+        void blend_color_vspan(int x, int y, int len, 
+                               const color_type* colors, 
+                               const cover_type* covers,
+                               cover_type cover = cover_full)
+        {
+            first_clip_box();
+            do
+            {
+                m_ren.blend_color_vspan(x, y, len, colors, covers, cover);
+            }
+            while(next_clip_box());
+        }
+
+        //--------------------------------------------------------------------
+        void copy_from(const rendering_buffer& from, 
+                       const rect_i* rc=0, 
+                       int x_to=0, 
+                       int y_to=0)
+        {
+            first_clip_box();
+            do
+            {
+                m_ren.copy_from(from, rc, x_to, y_to);
+            }
+            while(next_clip_box());
+        }
+
+        //--------------------------------------------------------------------
+        template<class SrcPixelFormatRenderer>
+        void blend_from(const SrcPixelFormatRenderer& src, 
+                        const rect_i* rect_src_ptr = 0, 
+                        int dx = 0, 
+                        int dy = 0,
+                        cover_type cover = cover_full)
+        {
+            first_clip_box();
+            do
+            {
+                m_ren.blend_from(src, rect_src_ptr, dx, dy, cover);
+            }
+            while(next_clip_box());
+        }
+
+        
+    private:
+        renderer_mclip(const renderer_mclip<PixelFormat>&);
+        const renderer_mclip<PixelFormat>& 
+            operator = (const renderer_mclip<PixelFormat>&);
+
+        base_ren_type          m_ren;
+        pod_bvector<rect_i, 4> m_clip;
+        unsigned               m_curr_cb;
+        rect_i                 m_bounds;
+    };
+
+
+}
+
+#endif