import java.awt.*;

// I am creating a new type of objects, named Point.
public class Point {
    private int x;  // every Point has a variable inside of it, named x.
    private int y;  // every Point has a variable inside of it, named y.
    
    // I'm a Point object, being freshly created
    // and the user wants me to have the given x/y values
    public Point(int x, int y) {
        // this.x = x;
        // this.y = y;
        this.setLocation(x, y);
    }
    
    public Point() {
        // this.x = 0;
        // this.y = 0;

        // this.setLocation(0, 0);
        
        // call the (x, y) constructor with 0 for the parameter values
        this(0, 0);
    }
    
    // providing encapsulation to our Point objects
    // outside classes can read x,y values, but not directly change them
    public int getX() {
        return this.x;
    }
    
    public int getY() {
        return this.y;
    }
    
    public void draw(Graphics g) {
        g.drawRect(this.x, this.y, 2, 2);
        g.drawString(this.toString(), this.x, this.y);
    }
    
    // double distance = p1.distance(p2);
    public double distance(Point otherPoint) {
        // I'm a Point, I have an x, and a y.
        // You're asking me, how far apart am I from this other Point b,
        // who also has an x and a y?
        
        int dx = this.x - otherPoint.x;
        int dy = this.y - otherPoint.y;
        
        double distance = Math.sqrt(dx*dx + dy*dy);
        return distance;
    }
    
    public double distanceFromOrigin() {
        // double result = this.distance(this);
        // return result;
        Point origin = new Point(0, 0);
        return this.distance(origin);
        
        // return this.distance(new Point(0, 0));
    }
    
    public boolean equals(Object o) {
        /*
        if (this.x == other.x && this.y == other.y) {
            return true;
        } else {
            return false;
        }
        
        if (!(o instanceof Point)) {
            return false;
        }
        */
        
        Point other = (Point) o;
        
        return (this.x == other.x && this.y == other.y);
    }
    
    public void setLocation(int x, int y) {
        this.x = Math.max(0, x);
        this.y = Math.max(0, y);  // new Point(x, y)
    }
    
    // so that Java can println a Point object
    public String toString() {
        String result = "(" + this.x + ", " + this.y + ")";
        return result;
    }
    
    public void translate(int changeInX, int changeInY) {
        // I'm a Point, and they want to change my x/y by the given amounts.
        this.x += changeInX;
        this.y += changeInY;
    }
}