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diff --git a/contrib/python/matplotlib/py2/extern/agg24-svn/src/agg_vcgen_bspline.cpp b/contrib/python/matplotlib/py2/extern/agg24-svn/src/agg_vcgen_bspline.cpp
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+++ b/contrib/python/matplotlib/py2/extern/agg24-svn/src/agg_vcgen_bspline.cpp
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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
+//----------------------------------------------------------------------------
+
+#include "agg_vcgen_bspline.h"
+
+namespace agg
+{
+
+    //------------------------------------------------------------------------
+    vcgen_bspline::vcgen_bspline() :
+        m_src_vertices(),
+        m_spline_x(),
+        m_spline_y(),
+        m_interpolation_step(1.0/50.0),
+        m_closed(0),
+        m_status(initial),
+        m_src_vertex(0)
+    {
+    }
+
+
+    //------------------------------------------------------------------------
+    void vcgen_bspline::remove_all()
+    {
+        m_src_vertices.remove_all();
+        m_closed = 0;
+        m_status = initial;
+        m_src_vertex = 0;
+    }
+
+
+    //------------------------------------------------------------------------
+    void vcgen_bspline::add_vertex(double x, double y, unsigned cmd)
+    {
+        m_status = initial;
+        if(is_move_to(cmd))
+        {
+            m_src_vertices.modify_last(point_d(x, y));
+        }
+        else
+        {
+            if(is_vertex(cmd))
+            {
+                m_src_vertices.add(point_d(x, y));
+            }
+            else
+            {
+                m_closed = get_close_flag(cmd);
+            }
+        }
+    }
+
+
+    //------------------------------------------------------------------------
+    void vcgen_bspline::rewind(unsigned)
+    {
+        m_cur_abscissa = 0.0;
+        m_max_abscissa = 0.0;
+        m_src_vertex = 0;
+        if(m_status == initial && m_src_vertices.size() > 2)
+        {
+            if(m_closed)
+            {
+                m_spline_x.init(m_src_vertices.size() + 8);
+                m_spline_y.init(m_src_vertices.size() + 8);
+                m_spline_x.add_point(0.0, m_src_vertices.prev(m_src_vertices.size() - 3).x);
+                m_spline_y.add_point(0.0, m_src_vertices.prev(m_src_vertices.size() - 3).y);
+                m_spline_x.add_point(1.0, m_src_vertices[m_src_vertices.size() - 3].x);
+                m_spline_y.add_point(1.0, m_src_vertices[m_src_vertices.size() - 3].y);
+                m_spline_x.add_point(2.0, m_src_vertices[m_src_vertices.size() - 2].x);
+                m_spline_y.add_point(2.0, m_src_vertices[m_src_vertices.size() - 2].y);
+                m_spline_x.add_point(3.0, m_src_vertices[m_src_vertices.size() - 1].x);
+                m_spline_y.add_point(3.0, m_src_vertices[m_src_vertices.size() - 1].y);
+            }
+            else
+            {
+                m_spline_x.init(m_src_vertices.size());
+                m_spline_y.init(m_src_vertices.size());
+            }
+            unsigned i;
+            for(i = 0; i < m_src_vertices.size(); i++)
+            {
+                double x = m_closed ? i + 4 : i;
+                m_spline_x.add_point(x, m_src_vertices[i].x);
+                m_spline_y.add_point(x, m_src_vertices[i].y);
+            }
+            m_cur_abscissa = 0.0;
+            m_max_abscissa = m_src_vertices.size() - 1;
+            if(m_closed)
+            {
+                m_cur_abscissa = 4.0;
+                m_max_abscissa += 5.0;
+                m_spline_x.add_point(m_src_vertices.size() + 4, m_src_vertices[0].x);
+                m_spline_y.add_point(m_src_vertices.size() + 4, m_src_vertices[0].y);
+                m_spline_x.add_point(m_src_vertices.size() + 5, m_src_vertices[1].x);
+                m_spline_y.add_point(m_src_vertices.size() + 5, m_src_vertices[1].y);
+                m_spline_x.add_point(m_src_vertices.size() + 6, m_src_vertices[2].x);
+                m_spline_y.add_point(m_src_vertices.size() + 6, m_src_vertices[2].y);
+                m_spline_x.add_point(m_src_vertices.size() + 7, m_src_vertices.next(2).x);
+                m_spline_y.add_point(m_src_vertices.size() + 7, m_src_vertices.next(2).y);
+            }
+            m_spline_x.prepare();
+            m_spline_y.prepare();
+        }
+        m_status = ready;
+    }
+
+
+
+
+
+
+    //------------------------------------------------------------------------
+    unsigned vcgen_bspline::vertex(double* x, double* y)
+    {
+        unsigned cmd = path_cmd_line_to;
+        while(!is_stop(cmd))
+        {
+            switch(m_status)
+            {
+            case initial:
+                rewind(0);
+
+            case ready:
+                if(m_src_vertices.size() < 2)
+                {
+                    cmd = path_cmd_stop;
+                    break;
+                }
+
+                if(m_src_vertices.size() == 2)
+                {
+                    *x = m_src_vertices[m_src_vertex].x;
+                    *y = m_src_vertices[m_src_vertex].y;
+                    m_src_vertex++;
+                    if(m_src_vertex == 1) return path_cmd_move_to;
+                    if(m_src_vertex == 2) return path_cmd_line_to;
+                    cmd = path_cmd_stop;
+                    break;
+                }
+
+                cmd = path_cmd_move_to;
+                m_status = polygon;
+                m_src_vertex = 0;
+
+            case polygon:
+                if(m_cur_abscissa >= m_max_abscissa)
+                {
+                    if(m_closed)
+                    {
+                        m_status = end_poly;
+                        break;
+                    }
+                    else
+                    {
+                        *x = m_src_vertices[m_src_vertices.size() - 1].x;
+                        *y = m_src_vertices[m_src_vertices.size() - 1].y;
+                        m_status = end_poly;
+                        return path_cmd_line_to;
+                    }
+                }
+
+                *x = m_spline_x.get_stateful(m_cur_abscissa);
+                *y = m_spline_y.get_stateful(m_cur_abscissa);
+                m_src_vertex++;
+                m_cur_abscissa += m_interpolation_step;
+                return (m_src_vertex == 1) ? path_cmd_move_to : path_cmd_line_to;
+
+            case end_poly:
+                m_status = stop;
+                return path_cmd_end_poly | m_closed;
+
+            case stop:
+                return path_cmd_stop;
+            }
+        }
+        return cmd;
+    }
+
+
+}
+