www.pudn.com > PG20101.zip > coordinate.h

// 
// 俯瞰式地圖的座標轉換 
// 
//		Copyright (c) 2000-2001 Chihiro.SAKAMOTO (HyperWorks) 
// 
#ifndef	__coordinate_h__ 
#define	__coordinate_h__ 
 
enum	{ 
	MAPGRID_WIDTH = 64, 
	MAPGRID_HEIGHT = 32, 
} ; 
 
inline CPoint PointToIndex(int x, int y) 
{ 
	y = (y - MAPGRID_HEIGHT * 13 / 2) * 2; 
#ifdef	notdef		// 當使用Shift時 
	return CPoint((x - y) >> 6, (x + y) >> 6); 
#else 
	return CPoint((x - y + MAPGRID_WIDTH * 10) / MAPGRID_WIDTH - 10, 
		(x + y + MAPGRID_WIDTH * 10) / MAPGRID_WIDTH - 10); 
#endif 
} 
 
inline CPoint PointToIndex(CPoint point) 
{ 
	return PointToIndex(point.x, point.y); 
} 
 
inline CPoint IndexToPoint(int x, int y) 
{ 
	return CPoint((x + y) * (MAPGRID_WIDTH / 2), 
		(12 - x + y) * (MAPGRID_HEIGHT / 2)); 
} 
 
inline CPoint IndexToPoint(CPoint point) 
{ 
	return IndexToPoint(point.x, point.y); 
} 
 
#endif