circle.h

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/******************************************************************************
** Copyright (c) 2005 MAK Technologies, Inc.
** All rights reserved.
******************************************************************************/
/******************************************************************************
** $RCSfile: circle.h,v $ $Revision: 1.4 $ $State: Exp $
******************************************************************************/
#ifndef circle_H_
#define circle_H_

#include "geometry/geometryDefines.h"
#include "geometry/point.h"

//
// \file circle.h
// \brief This file contains the DtCircle class declaration.
//

//
// The DtCircle class represents a simple mathematical circle.  
// \note The z component of the center point is \b always zero.
class DT_DLL_geometry DtCircle
{
public:
   DtCircle(DtPoint newCenter, double newRadius);

   virtual ~DtCircle();
   
   // This class is copyable and assignable.  Because the implementations are so
   // simple, the compiler generated ones are sufficient.
//   DtCircle(const DtCircle& original);
//   const DtCircle& operator=(const DtCircle& original);
   
   double radius() const;
   bool setRadius(double newRadius);

   DtPoint center() const;
   void setCenter(DtPoint& newCenter);

protected:

   bool testInvariant() const;

private:
   
   double myRadius;
   DtPoint myCenter;
};

#endif