// A program that deals with 2D points.
// First version, to accompany Point class with state only.

public class PointMain {
    public static void main(String[] args) {
        // create two Point objects
        Point p1 = new Point();
        p1.x = 7;
        p1.y = 2;

        Point p2 = new Point();
        p2.x = 4;
        p2.y = 3;

        // print each point and its distance from origin
        System.out.println("p1 is (" + p1.x + ", " + p1.y + ")");
        double dist1 = Math.sqrt(p1.x * p1.x + p1.y * p1.y);
        System.out.println("distance from origin = " + dist1);

        System.out.println("p2 is (" + p2.x + ", " + p2.y + ")");
        double dist2 = Math.sqrt(p2.x * p2.x + p2.y * p2.y);
        System.out.println("distance from origin = " + dist2);
        System.out.println();
        
        // translate each point to a new location
        p1.x += 11;
        p1.y += 6;
        p2.x += 1;
        p2.y += 7;

        // print the points again
        System.out.println("p1 is (" + p1.x + ", " + p1.y + ")");
        System.out.println("p2 is (" + p2.x + ", " + p2.y + ")");
    }
}