#ifndef _CONVEX_HPP_
#define _CONVEX_HPP_
#include <mdiwin/windows.hpp>
#include <mdiwin/types.hpp>

class Convex
{
public:
	Convex(void);
	~Convex(void);
	HGLOBAL performConvex(WORD &width,WORD &height,UHUGE *lpImage);
	void cancelThread(void);
	WORD isCancelled(void)const;
private:
	void cartesianPoint(POINT &imagePoint)const;
	void imagePoint(POINT &cartesianPoint)const;
	void setPoint(int x,int y,POINT &somePoint)const;
	void reportTime(void)const;
	WORD yieldTask(void)const;
	HGLOBAL emergencyCleanup(HGLOBAL hGlobalSource,HGLOBAL hGlobal)const;

	WORD mIsInThread;
	WORD mWidth;
	WORD mHeight;
	WORD mxHalf;
	WORD myHalf;
};

inline
void Convex::cartesianPoint(POINT &imagePoint)const
{
	imagePoint.x-=mxHalf;
	imagePoint.y=(mHeight-1)-(myHalf+imagePoint.y);
}

inline
void Convex::imagePoint(POINT &cartesianPoint)const
{
	cartesianPoint.x+=mxHalf;
	cartesianPoint.y=(mHeight-1)-(myHalf+cartesianPoint.y);
}

inline
void Convex::setPoint(int x,int y,POINT &point)const
{
	point.x=x;
	point.y=y;
}

inline
void Convex::cancelThread(void)
{
	mIsInThread=FALSE;
}

inline
WORD Convex::isCancelled(void)const
{
	return !mIsInThread;
}
#endif