package ch4;

class Point {
	private double x;
	private double y;
	Point(double x1, double y1) {
		x = x1;
		y = y1;
	}
	public double getX() {
		return x;
	}
	public double getY() {
		return y;
	}
	public void setX(double i) {
		x = i;
	}
	public void setY(double i) {
		y = i;
	}
}

class Circle {
	private Point o;
	private double radius;

	Circle(Point p, double r) {
		o = p;
		radius = r;
	}

	Circle(double r) {
		o = new Point(0.0, 0.0);
		radius = r;
	}

	boolean contains(Point p) {
		double x = p.getX() - o.getX();
		double y = p.getY() - o.getY();
		if (x * x + y * y > radius * radius)
			return false;
		else
			return true;
	}

	public void setO(double x, double y) {
		o.setX(x);
		o.setY(y);
	}

	public Point getO() {
		return o;
	}

	public double getRadius() {
		return radius;
	}

	public void setRadius(double r) {
		radius = r;
	}

	public double area() {
		return 3.14 * radius * radius;
	}
}

public class TestCircle {
	public static void main(String args[]) {
		Circle c1 = new Circle(new Point(1.0, 2.0), 2.0);
		Circle c2 = new Circle(5.0);
		System.out.println("c1:(" + c1.getO().getX() + "," + c1.getO().getY() + ")," + c1.getRadius());
		System.out.println("c2:(" + c2.getO().getX() + "," + c2.getO().getY() + ")," + c2.getRadius());
		System.out.println("c1 area = " + c1.area());
		System.out.println("c1 area = " + c2.area());
		c1.setO(5, 6);
		c2.setRadius(9.0);
		System.out.println("c1:(" + c1.getO().getX() + "," + c1.getO().getY() + ")," + c1.getRadius());
		System.out.println("c2:(" + c2.getO().getX() + "," + c2.getO().getY() + ")," + c2.getRadius());
		System.out.println("c1 area = " + c1.area());
		System.out.println("c1 area = " + c2.area());

		Point p1 = new Point(5.2, 6.3);
		System.out.println(c1.contains(p1));
		System.out.println(c1.contains(new Point(10.0, 9.0)));

	}
}