global.h

其实跟上面一个是一样一样一样一样一样一样一样一样一样一样一样一样一样一样一样一样一样的

#ifndef _MAP_GLOBAL_H_
#define _MAP_GLOBAL_H_

#define infinity 1e20           //定义为无穷大
#define EP 1e-10                //定义无穷小   

typedef unsigned char uchar;
typedef unsigned int  uint;

typedef struct DrawParam {
	
	double m_StartX;       //当前坐标原点横坐标
	double m_StartY;       //当前坐标原点纵坐标 
	int m_ScreenWidth;  //当前屏幕宽度
	int m_ScreenHeigh;  //当前屏幕高度
	double m_Top;
	double m_left;
	float m_Scale;      //当前绘图比例尺     


} DRAWPARAM;

/************************************************************************/
/*                              SwapWord()                              */
/*                                                                      */
/*      Swap a 2, 4 or 8 byte word.                                     */
/************************************************************************/

 static void	SwapWord( int length, void * wordP )

{
    int		i;
    uchar	temp;

    for( i=0; i < length/2; i++ )
    {
	temp = ((uchar *) wordP)[i];
	((uchar *)wordP)[i] = ((uchar *) wordP)[length-i-1];
	((uchar *) wordP)[length-i-1] = temp;
    }
}

#endif //_MAP_GLOBAL_H_