//////////////////////////////////////////////////////////////////////////////
//文件 ScreenXY.h
//主要功能: 
//		基础类库
//程序编写:		2005-12-07
/////////////////////////////////////////////////////////////////////////////

#pragma once

class AFX_EXT_CLASS CScreenXY 
{
public:
	CScreenXY(void);
	~CScreenXY(void);

	int Create(double ScreenX0, double ScreenY0, double xPixelPerUnit, double yPixelPerUnit, double RealX0, double RealY0);

	double xScreen(double x);
	double yScreen(double y);
	double xReal(double x);
	double yReal(double y);
	int IsInScreen(int i, int j);

	void SetScreenRange(CDC* pDC);			//设置Width与Height两个变量的值

	long GetScreenWidth(double dWidth);
	long GetScreenHeight(double dHeight);
	double GetRealWidth(int nWidth);
	double GetRealHeight(int nHeight);

	double ScreenX0;
	double ScreenY0;
	double xPixelPerUnit;
	double yPixelPerUnit;
	double RealX0;
	double RealY0;
	long Width,Height;
};