Initial checkin

git-svn-id: file:///srv/svn/repos/haiku/trunk/current@9933 a95241bf-73f2-0310-859d-f6bbb57e9c96
2004-11-12 02:02:58 +00:00
parent 5344cdf47b
commit 39241fe228
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+//----------------------------------------------------------------------------
+// Anti-Grain Geometry - Version 2.2
+// Copyright (C) 2002-2004 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: [email protected]
+//          [email protected]
+//          http://www.antigrain.com
+//----------------------------------------------------------------------------
+
+#ifndef AGG_VCGEN_CONTOUR_INCLUDED
+#define AGG_VCGEN_CONTOUR_INCLUDED
+
+#include "agg_basics.h"
+#include "agg_vertex_sequence.h"
+
+namespace agg
+{
+
+    //----------------------------------------------------------vcgen_contour
+    //
+    // See Implementation agg_vcgen_contour.cpp
+    //
+    class vcgen_contour
+    {
+        enum status_e
+        {
+            initial,
+            ready,
+            outline,
+            add_point,
+            end_poly
+        };
+
+    public:
+        typedef vertex_sequence<vertex_dist, 6> vertex_storage;
+
+        vcgen_contour();
+
+        void width(double w) { m_width = w * 0.5; }
+        void miter_limit(double ml) { m_miter_limit = ml; }
+        void miter_limit_theta(double t);
+        void auto_detect_orientation(bool v) { m_auto_detect = v; }
+
+        double width() const { return m_width * 2.0; }
+        double miter_limit() const { return m_miter_limit; }
+        bool   auto_detect_orientation() const { return m_auto_detect; }
+
+        // Generator interface
+        void remove_all();
+        void add_vertex(double x, double y, unsigned cmd);
+
+        // Vertex Source Interface
+        void     rewind(unsigned id);
+        unsigned vertex(double* x, double* y);
+
+    private:
+        vcgen_contour(const vcgen_contour&);
+        const vcgen_contour& operator = (const vcgen_contour&);
+
+        bool calc_miter(const vertex_dist& v0, 
+                        const vertex_dist& v1, 
+                        const vertex_dist& v2);
+
+        vertex_storage m_src_vertices;
+        double         m_width;
+        double         m_abs_width;
+        double         m_signed_width;
+        double         m_miter_limit;
+        status_e       m_status;
+        unsigned       m_src_vertex;
+        unsigned       m_closed;
+        unsigned       m_orientation;
+        bool           m_auto_detect;
+        double         m_x1;
+        double         m_y1;
+        double         m_x2;
+        double         m_y2;
+    };
+
+}
+
+#endif