Organic Maps sources as of 02.04.2025 (fad26bbf22ac3da75e01e62aa01e5c8e11861005)

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3party/agg/agg_trans_single_path.h

@@ -0,0 +1,97 @@
+//----------------------------------------------------------------------------
+// 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
+//----------------------------------------------------------------------------
+
+#ifndef AGG_TRANS_SINGLE_PATH_INCLUDED
+#define AGG_TRANS_SINGLE_PATH_INCLUDED
+
+#include "agg_basics.h"
+#include "agg_vertex_sequence.h"
+
+namespace agg
+{
+
+    // See also: agg_trans_single_path.cpp
+    //
+    //-------------------------------------------------------trans_single_path
+    class trans_single_path
+    {
+        enum status_e
+        {
+            initial,
+            making_path,
+            ready
+        };
+
+    public:
+        typedef vertex_sequence<vertex_dist, 6> vertex_storage;
+
+        trans_single_path();
+
+        //--------------------------------------------------------------------
+        void   base_length(double v)  { m_base_length = v; }
+        double base_length() const { return m_base_length; }
+
+        //--------------------------------------------------------------------
+        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_to(double x, double y);
+        void line_to(double x, double y);
+        void finalize_path();
+
+        //--------------------------------------------------------------------
+        template<class VertexSource> 
+        void add_path(VertexSource& vs, unsigned path_id=0)
+        {
+            double x;
+            double y;
+
+            unsigned cmd;
+            vs.rewind(path_id);
+            while(!is_stop(cmd = vs.vertex(&x, &y)))
+            {
+                if(is_move_to(cmd)) 
+                {
+                    move_to(x, y);
+                }
+                else 
+                {
+                    if(is_vertex(cmd))
+                    {
+                        line_to(x, y);
+                    }
+                }
+            }
+            finalize_path();
+        }
+
+        //--------------------------------------------------------------------
+        double total_length() const;
+        void transform(double *x, double *y) const;
+
+    private:
+        vertex_storage m_src_vertices;
+        double         m_base_length;
+        double         m_kindex;
+        status_e       m_status;
+        bool           m_preserve_x_scale;
+    };
+
+
+}
+
+#endif