PolarBezierCurve.h

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//==============================================================================================
//  FILENAME    :   PolarPolarBezierCurve.h
//  AUTHOR      :   Liang Liu
//  CREATION    :   2009-03-23
//  Copyright (C) MicroStrategy Incorporated 2009
//  All Rights Reserved
//==============================================================================================

#ifndef MsiChart_PolarBezierCurve_h
#define MsiChart_PolarBezierCurve_h

#include "Rect2D.h"
#include "Synch/Defines/SmartPtr.h"
#include "BezierCurve.h"

struct _cairo;
typedef struct _cairo cairo_t;

namespace MsiChart
{
    class PolarBezierCurve : public BezierCurve
    {
    public:
        typedef MSynch::SmartPtr<PolarBezierCurve> Ptr;     
        PolarBezierCurve(const Point2D& irCenter, double iTheta0, double iRou0, double iDRou0,
            double iTheta3, double iRou3, double iDRou3);   
        PolarBezierCurve(FPoint2D& irP0, FPoint2D& irP3);
        PolarBezierCurve(FPoint2D& irP0, FPoint2D& irP1, FPoint2D& irP2, FPoint2D& irP3);

        virtual void GetApproximatePolygon(Int32 iLineWidth, std::vector<Point2D>& orPolygon) const;

    private:
        void hGetApproximatePolyline(std::vector<Point2D>& orPolyline) const;   

        Point2D hEvaluate(float iT) const;      
    };  

    
}

#endif