package kyodai.map;import java.awt.Point;/** * 定義直線的類*/public class Line{	public Point a;	public Point b;	public int direct;	public Line(){	}	/**	 * 通過兩點和方向構造直線	*/	public Line(int direct, Point a, Point b){		this.direct = direct;		this.a = a;		this.b = b;	}}