// CSE 142, Spring 2010, Marty Stepp
// This class defines a new type of objects called Point.
// Each Point object represents a particular x/y coordinate position such as
// (42, 173) and has behavior related to that position, such as being able
// to compute its distance from other points, draw it on the screen, etc.

import java.awt.*;

public class Point {
    // fields
    private int x;
    private int y;
    
    // constructor
    // - runs when a client asks for a "new Point()"
    public Point(int startX, int startY) {
        // set up the initial values of the fields for 'this' current object
        x = startX;
        y = startY;
    }
    
    // read-only access to the fields
    public int getX() {
        return x;
    }
    
    public int getY() {
        return y;
    }
    
    // Returns the distance between this point and the given other point.
    public double distance(Point otherPoint) {
        int dx = otherPoint.x - x;
        int dy = otherPoint.y - y;
        double dist = Math.sqrt(dx*dx + dy*dy);
        return dist;
    }

	// Draws the current Point object on screen using the given graphical pen.
    public void draw(Graphics g) {
        g.fillOval(x, y, 3, 3);
        g.drawString("(" + x + ", " + y + ")", x, y);
    }
    
    // Returns a String representation of this point,
    // so that it can be printed by client code.
    public String toString() {
        return "(" + x + ", " + y + ")";
    }
    
    // Shifts this point's x/y position by the given amounts.
    public void translate(int dx, int dy) {
        x = x + dx;
        y = y + dy;
    }
}