circle.h

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#ifndef CIRCLE_CLASS
#define CIRCLE_CLASS

/*****************************************************************************\
*                                                                             *
*  Name   : circle                                                            *
*  Author : Chris Koeritz                                                     *
*                                                                             *
*******************************************************************************
* Copyright (c) 1992-$now By Author.  This program 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.  This is online at:      *
*     http://www.fsf.org/copyleft/gpl.html                                    *
* Please send any updates to: fred@gruntose.com                               *
\*****************************************************************************/

#include "geometric_dll.h"

namespace geometric {


// forward.
class cartesian_point;
class cartesian_rectangle;
class double_angle;

class GEOMETRIC_CLASS_STYLE circle
{
public:
  circle();
  circle(double radius, const cartesian_point &center);
  ~circle();

  double area() const;

  double circumference() const;

  double diameter() const;

  bool inside(const cartesian_point &where) const;

  cartesian_point location(const double_angle &where) const;

  cartesian_rectangle dimensions() const;

  double radius() const;  
  void radius(double to_set);  

  cartesian_point center() const;  
  void center(const cartesian_point &to_set);  

private:
  double _radius;  
  cartesian_point *_center;  
};

} // namespace.

#endif

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