import java.awt.Point;

public class Direction {
private final double x;
private final double y;
public Direction(double x,double y){
	this.x=x;
	this.y=y;

}
public Direction(Point point1,Point point2){
this.x=point1.getX() - point2.getX();
this.y=point2.getY() - point2.getY();
}
double getX(){
	return x;
}
double getY(){
	return y;
}
Direction sub(Direction direction){
	double tempX=this.x-direction.getX();
	double tempY=this.y-direction.getY();
	Direction subresult=new Direction(tempX,tempY);
	return subresult;
}



Direction add(Direction direction){
	double tempX=this.x+direction.getX();
	double tempY=this.y+direction.getY();
	Direction addresult=new Direction(tempX,tempY);
    return addresult;
}

Direction mul(double factor){
    double tempX=this.x*factor;
	double tempY=this.y*factor;
	Direction multiply=new Direction(tempX,tempY);
    return multiply;
}

Direction normalized(){
   double norm=Math.sqrt(Math.pow(x,2)+Math.pow(y,2));
	double tempX=  this.x/norm;
	double tempY=	this.y/norm;
   Direction normalized= new Direction (tempX,tempY);
		  return normalized;
}

}