1 files changed, 74 insertions, 0 deletions
diff --git a/agg/inc/agg_arc.h b/agg/inc/agg_arc.h
new file mode 100755
index 000000000000..80b148d910d0
--- /dev/null
+++ b/agg/inc/agg_arc.h
@@ -0,0 +1,74 @@
+//----------------------------------------------------------------------------
+// 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
+//----------------------------------------------------------------------------
+//
+// Arc vertex generator
+//
+//----------------------------------------------------------------------------
+
+#ifndef AGG_ARC_INCLUDED
+#define AGG_ARC_INCLUDED
+
+#include <math.h>
+#include "agg_basics.h"
+
+namespace agg
+{
+
+    //=====================================================================arc
+    //
+    // See Implementation agg_arc.cpp
+    //
+    class arc
+    {
+    public:
+        arc() : m_scale(1.0), m_initialized(false) {}
+        arc(double x,  double y,
+            double rx, double ry,
+            double a1, double a2,
+            bool ccw=true);
+
+        void init(double x,  double y,
+                  double rx, double ry,
+                  double a1, double a2,
+                  bool ccw=true);
+
+        void approximation_scale(double s);
+        double approximation_scale() const { return m_scale;  }
+
+        void rewind(unsigned);
+        unsigned vertex(double* x, double* y);
+
+    private:
+        void normalize(double a1, double a2, bool ccw);
+
+        double   m_x;
+        double   m_y;
+        double   m_rx;
+        double   m_ry;
+        double   m_angle;
+        double   m_start;
+        double   m_end;
+        double   m_scale;
+        double   m_da;
+        bool     m_ccw;
+        bool     m_initialized;
+        unsigned m_path_cmd;
+    };
+
+
+}
+
+
+#endif