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//----------------------------------------------------------------------------
// Anti-Grain Geometry (AGG) - Version 2.5
// A high quality rendering engine for C++
// Copyright (C) 2002-2006 Maxim Shemanarev
// Contact: mcseem@antigrain.com
// mcseemagg@yahoo.com
// http://antigrain.com
//
// AGG is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// AGG is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with AGG; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
// MA 02110-1301, USA.
//----------------------------------------------------------------------------
#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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