#ifndef _SHEAR_HPP_
#define _SHEAR_HPP_
#include <mdiwin/windows.hpp>
#include <mdiwin/types.hpp>
class Shear
{
public:
	Shear(void);
	~Shear();
	HGLOBAL performShear(WORD &width,WORD &height,double hFraction,double gFraction,UHUGE *lpImage);
private:
	void calculateDimensions(WORD width,WORD height,double hFactor,double gFactor);
	void cartesianPoint(POINT &imagePoint)const;
	void imagePoint(POINT &cartesianPoint)const;
	void setPoint(int x,int y,POINT &point)const;
	WORD mSourceWidth;
	WORD mSourceHeight;
	WORD mxSourceHalf;
	WORD mySourceHalf;
	WORD mDestWidth;
	WORD mDestHeight;
	WORD mxDestHalf;
	WORD myDestHalf;
};

inline
Shear::Shear(void)
{
}

inline
Shear::~Shear()
{
}

inline
void Shear::cartesianPoint(POINT &imagePoint)const
{
	imagePoint.x-=mxSourceHalf;
	imagePoint.y=mSourceHeight-(mySourceHalf+imagePoint.y)+1;
}

inline
void Shear::imagePoint(POINT &cartesianPoint)const
{
	double tempyFactor;
	cartesianPoint.x+=mxDestHalf;
	tempyFactor=(((double)mDestHeight/2.00)-1.00);
	cartesianPoint.y=mDestHeight-(cartesianPoint.y+tempyFactor);
}

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