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//----------------------------------------------------------------------------
// 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
//----------------------------------------------------------------------------
#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 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
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