1 files changed, 131 insertions, 0 deletions
diff --git a/agg/inc/agg_trans_double_path.h b/agg/inc/agg_trans_double_path.h
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+++ b/agg/inc/agg_trans_double_path.h
@@ -0,0 +1,131 @@
+//----------------------------------------------------------------------------
+// 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
+//----------------------------------------------------------------------------
+
+#ifndef AGG_TRANS_DOUBLE_PATH_INCLUDED
+#define AGG_TRANS_DOUBLE_PATH_INCLUDED
+
+#include "agg_basics.h"
+#include "agg_vertex_sequence.h"
+
+namespace agg
+{
+
+    // See also: agg_trans_double_path.cpp
+    //
+    //-------------------------------------------------------trans_double_path
+    class trans_double_path
+    {
+        enum status_e
+        {
+            initial,
+            making_path,
+            ready
+        };
+
+    public:
+        typedef vertex_sequence<vertex_dist, 6> vertex_storage;
+
+        trans_double_path();
+
+        //--------------------------------------------------------------------
+        void   base_length(double v)  { m_base_length = v; }
+        double base_length() const { return m_base_length; }
+
+        //--------------------------------------------------------------------
+        void   base_height(double v)  { m_base_height = v; }
+        double base_height() const { return m_base_height; }
+
+        //--------------------------------------------------------------------
+        void preserve_x_scale(bool f) { m_preserve_x_scale = f;    }
+        bool preserve_x_scale() const { return m_preserve_x_scale; }
+
+        //--------------------------------------------------------------------
+        void reset();
+        void move_to1(double x, double y);
+        void line_to1(double x, double y);
+        void move_to2(double x, double y);
+        void line_to2(double x, double y);
+        void finalize_paths();
+
+        //--------------------------------------------------------------------
+        template<class VertexSource1, class VertexSource2>
+        void add_paths(VertexSource1& vs1, VertexSource2& vs2,
+                       unsigned path1_id=0, unsigned path2_id=0)
+        {
+            double x;
+            double y;
+
+            unsigned cmd;
+
+            vs1.rewind(path1_id);
+            while(!is_stop(cmd = vs1.vertex(&x, &y)))
+            {
+                if(is_move_to(cmd))
+                {
+                    move_to1(x, y);
+                }
+                else
+                {
+                    if(is_vertex(cmd))
+                    {
+                        line_to1(x, y);
+                    }
+                }
+            }
+
+            vs2.rewind(path2_id);
+            while(!is_stop(cmd = vs2.vertex(&x, &y)))
+            {
+                if(is_move_to(cmd))
+                {
+                    move_to2(x, y);
+                }
+                else
+                {
+                    if(is_vertex(cmd))
+                    {
+                        line_to2(x, y);
+                    }
+                }
+            }
+            finalize_paths();
+        }
+
+        //--------------------------------------------------------------------
+        double total_length1() const;
+        double total_length2() const;
+        void transform(double *x, double *y) const;
+
+    private:
+        double finalize_path(vertex_storage& vertices);
+        void transform1(const vertex_storage& vertices,
+                        double kindex, double kx,
+                        double *x, double* y) const;
+
+        vertex_storage m_src_vertices1;
+        vertex_storage m_src_vertices2;
+        double         m_base_length;
+        double         m_base_height;
+        double         m_kindex1;
+        double         m_kindex2;
+        status_e       m_status1;
+        status_e       m_status2;
+        bool           m_preserve_x_scale;
+    };
+
+}
+
+
+#endif