Repo created

3party/agg/agg_vcgen_dash.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
+//----------------------------------------------------------------------------
+//
+// Line dash generator
+//
+//----------------------------------------------------------------------------
+#ifndef AGG_VCGEN_DASH_INCLUDED
+#define AGG_VCGEN_DASH_INCLUDED
+
+#include "agg_basics.h"
+#include "agg_vertex_sequence.h"
+
+namespace agg
+{
+
+    //---------------------------------------------------------------vcgen_dash
+    //
+    // See Implementation agg_vcgen_dash.cpp
+    //
+    class vcgen_dash
+    {
+        enum max_dashes_e
+        {
+            max_dashes = 32
+        };
+
+        enum status_e
+        {
+            initial,
+            ready,
+            polyline,
+            stop
+        };
+
+    public:
+        typedef vertex_sequence<vertex_dist, 6> vertex_storage;
+
+        vcgen_dash();
+
+        void remove_all_dashes();
+        void add_dash(double dash_len, double gap_len);
+        void dash_start(double ds);
+
+        void shorten(double s) { m_shorten = s; }
+        double shorten() const { return m_shorten; }
+
+        // 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_dash(const vcgen_dash&);
+        const vcgen_dash& operator = (const vcgen_dash&);
+
+        void calc_dash_start(double ds);
+
+        double             m_dashes[max_dashes];
+        double             m_total_dash_len;
+        unsigned           m_num_dashes;
+        double             m_dash_start;
+        double             m_shorten;
+        double             m_curr_dash_start;
+        unsigned           m_curr_dash;
+        double             m_curr_rest;
+        const vertex_dist* m_v1;
+        const vertex_dist* m_v2;
+
+        vertex_storage m_src_vertices;
+        unsigned       m_closed;
+        status_e       m_status;
+        unsigned       m_src_vertex;
+    };
+
+
+}
+
+#endif