import java.awt.Graphics;
public class Joon implements Kujund{
  int x1, y1, x2, y2;
  public Joon(int ux1, int uy1, int ux2, int uy2){
     x1=ux1;
	 y1=uy1;
	 x2=ux2; 
	 y2=uy2;
  }
  public void joonista(Graphics g){
     g.drawLine(x1, y1, x2, y2);
  }
  public double kaugus(int hx, int hy){
    int A=(y2-y1);
    int B=-(x2-x1);
    int C=y1*(x2-x1)-x1*(y2-y1);
	return Math.abs(A*hx+B*hy+C)/Math.sqrt(A*A+B*B);
  }
  public boolean kasPihtas(int hx, int hy){
    if(hx<Math.min(x1, x2)){return false;}
    if(hx>Math.max(x1, x2)){return false;}
    if(hy<Math.min(y1, y2)){return false;}
    if(hy>Math.max(y1, y2)){return false;}
    return kaugus(hx, hy)<=TABAMISKAUGUS;
  }
}