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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
//----------------------------------------------------------------------------
//
// 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
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