88 lines
2.5 KiB
C++
88 lines
2.5 KiB
C++
//----------------------------------------------------------------------------
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// Anti-Grain Geometry - Version 2.4
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// Copyright (C) 2002-2005 Maxim Shemanarev (http://www.antigrain.com)
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//
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// Permission to copy, use, modify, sell and distribute this software
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// is granted provided this copyright notice appears in all copies.
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// This software is provided "as is" without express or implied
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// warranty, and with no claim as to its suitability for any purpose.
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//
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//----------------------------------------------------------------------------
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// Contact: mcseem@antigrain.com
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// mcseemagg@yahoo.com
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// http://www.antigrain.com
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//----------------------------------------------------------------------------
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#ifndef AGG_VCGEN_SMOOTH_POLY1_INCLUDED
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#define AGG_VCGEN_SMOOTH_POLY1_INCLUDED
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#include "agg_basics.h"
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#include "agg_vertex_sequence.h"
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namespace agg
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{
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//======================================================vcgen_smooth_poly1
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//
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// See Implementation agg_vcgen_smooth_poly1.cpp
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// Smooth polygon generator
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//
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//------------------------------------------------------------------------
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class vcgen_smooth_poly1
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{
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enum status_e
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{
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initial,
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ready,
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polygon,
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ctrl_b,
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ctrl_e,
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ctrl1,
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ctrl2,
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end_poly,
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stop
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};
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public:
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typedef vertex_sequence<vertex_dist, 6> vertex_storage;
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vcgen_smooth_poly1();
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void smooth_value(double v) { m_smooth_value = v * 0.5; }
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double smooth_value() const { return m_smooth_value * 2.0; }
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// Vertex Generator Interface
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void remove_all();
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void add_vertex(double x, double y, unsigned cmd);
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// Vertex Source Interface
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void rewind(unsigned path_id);
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unsigned vertex(double* x, double* y);
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private:
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vcgen_smooth_poly1(const vcgen_smooth_poly1&);
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const vcgen_smooth_poly1& operator = (const vcgen_smooth_poly1&);
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void calculate(const vertex_dist& v0,
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const vertex_dist& v1,
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const vertex_dist& v2,
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const vertex_dist& v3);
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vertex_storage m_src_vertices;
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double m_smooth_value;
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unsigned m_closed;
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status_e m_status;
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unsigned m_src_vertex;
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double m_ctrl1_x;
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double m_ctrl1_y;
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double m_ctrl2_x;
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double m_ctrl2_y;
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};
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}
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#endif
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