1 files changed, 154 insertions, 0 deletions
diff --git a/agg/inc/agg_conv_marker.h b/agg/inc/agg_conv_marker.h
new file mode 100755
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+++ b/agg/inc/agg_conv_marker.h
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+//----------------------------------------------------------------------------
+// Anti-Grain Geometry - Version 2.3
+// 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
+//----------------------------------------------------------------------------
+//
+// conv_marker
+//
+//----------------------------------------------------------------------------
+#ifndef AGG_CONV_MARKER_INCLUDED
+#define AGG_CONV_MARKER_INCLUDED
+
+#include "agg_basics.h"
+#include "agg_trans_affine.h"
+#include "agg_vertex_iterator.h"
+
+namespace agg
+{
+    //-------------------------------------------------------------conv_marker
+    template<class MarkerLocator, class MarkerShapes>
+    class conv_marker
+    {
+    public:
+        conv_marker(MarkerLocator& ml, MarkerShapes& ms);
+
+        trans_affine& transform() { return m_transform; }
+        const trans_affine& transform() const { return m_transform; }
+
+        void rewind(unsigned id);
+        unsigned vertex(double* x, double* y);
+
+        typedef conv_marker<MarkerLocator, MarkerShapes> source_type;
+        typedef vertex_iterator<source_type> iterator;
+        iterator begin(unsigned id) { return iterator(*this, id); }
+        iterator end() { return iterator(path_cmd_stop); }
+
+    private:
+        conv_marker(const conv_marker<MarkerLocator, MarkerShapes>&);
+        const conv_marker<MarkerLocator, MarkerShapes>&
+            operator = (const conv_marker<MarkerLocator, MarkerShapes>&);
+
+        enum status_e
+        {
+            initial,
+            markers,
+            polygon,
+            stop
+        };
+
+        MarkerLocator* m_marker_locator;
+        MarkerShapes*  m_marker_shapes;
+        trans_affine   m_transform;
+        trans_affine   m_mtx;
+        status_e       m_status;
+        unsigned       m_marker;
+        unsigned       m_num_markers;
+    };
+
+
+    //------------------------------------------------------------------------
+    template<class MarkerLocator, class MarkerShapes>
+    conv_marker<MarkerLocator, MarkerShapes>::conv_marker(MarkerLocator& ml, MarkerShapes& ms) :
+        m_marker_locator(&ml),
+        m_marker_shapes(&ms),
+        m_status(initial),
+        m_marker(0),
+        m_num_markers(1)
+    {
+    }
+
+
+    //------------------------------------------------------------------------
+    template<class MarkerLocator, class MarkerShapes>
+    void conv_marker<MarkerLocator, MarkerShapes>::rewind(unsigned)
+    {
+        m_status = initial;
+        m_marker = 0;
+        m_num_markers = 1;
+    }
+
+
+    //------------------------------------------------------------------------
+    template<class MarkerLocator, class MarkerShapes>
+    unsigned conv_marker<MarkerLocator, MarkerShapes>::vertex(double* x, double* y)
+    {
+        unsigned cmd = path_cmd_move_to;
+        double x1, y1, x2, y2;
+
+        while(!is_stop(cmd))
+        {
+            switch(m_status)
+            {
+            case initial:
+                if(m_num_markers == 0)
+                {
+                   cmd = path_cmd_stop;
+                   break;
+                }
+                m_marker_locator->rewind(m_marker);
+                ++m_marker;
+                m_num_markers = 0;
+                m_status = markers;
+
+            case markers:
+                if(is_stop(m_marker_locator->vertex(&x1, &y1)))
+                {
+                    m_status = initial;
+                    break;
+                }
+                if(is_stop(m_marker_locator->vertex(&x2, &y2)))
+                {
+                    m_status = initial;
+                    break;
+                }
+                ++m_num_markers;
+                m_mtx = m_transform;
+                m_mtx *= trans_affine_rotation(atan2(y2 - y1, x2 - x1));
+                m_mtx *= trans_affine_translation(x1, y1);
+                m_marker_shapes->rewind(m_marker - 1);
+                m_status = polygon;
+
+            case polygon:
+                cmd = m_marker_shapes->vertex(x, y);
+                if(is_stop(cmd))
+                {
+                    cmd = path_cmd_move_to;
+                    m_status = markers;
+                    break;
+                }
+                m_mtx.transform(x, y);
+                return cmd;
+
+            case stop:
+                cmd = path_cmd_stop;
+                break;
+            }
+        }
+        return cmd;
+    }
+
+}
+
+
+#endif
+