Repo created

3party/agg/agg_vcgen_smooth_poly1.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
+//----------------------------------------------------------------------------
+
+#ifndef AGG_VCGEN_SMOOTH_POLY1_INCLUDED
+#define AGG_VCGEN_SMOOTH_POLY1_INCLUDED
+
+#include "agg_basics.h"
+#include "agg_vertex_sequence.h"
+
+
+namespace agg
+{
+
+    //======================================================vcgen_smooth_poly1
+    //
+    // See Implementation agg_vcgen_smooth_poly1.cpp 
+    // Smooth polygon generator
+    //
+    //------------------------------------------------------------------------
+    class vcgen_smooth_poly1
+    {
+        enum status_e
+        {
+            initial,
+            ready,
+            polygon,
+            ctrl_b,
+            ctrl_e,
+            ctrl1,
+            ctrl2,
+            end_poly,
+            stop
+        };
+
+    public:
+        typedef vertex_sequence<vertex_dist, 6> vertex_storage;
+
+        vcgen_smooth_poly1();
+
+        void   smooth_value(double v) { m_smooth_value = v * 0.5; }
+        double smooth_value() const { return m_smooth_value * 2.0; }
+
+        // Vertex Generator Interface
+        void remove_all();
+        void add_vertex(double x, double y, unsigned cmd);
+
+        // Vertex Source Interface
+        void     rewind(unsigned path_id);
+        unsigned vertex(double* x, double* y);
+
+    private:
+        vcgen_smooth_poly1(const vcgen_smooth_poly1&);
+        const vcgen_smooth_poly1& operator = (const vcgen_smooth_poly1&);
+
+        void calculate(const vertex_dist& v0, 
+                       const vertex_dist& v1, 
+                       const vertex_dist& v2,
+                       const vertex_dist& v3);
+
+        vertex_storage m_src_vertices;
+        double         m_smooth_value;
+        unsigned       m_closed;
+        status_e       m_status;
+        unsigned       m_src_vertex;
+        double         m_ctrl1_x;
+        double         m_ctrl1_y;
+        double         m_ctrl2_x;
+        double         m_ctrl2_y;
+    };
+
+}
+
+
+#endif
+