Circle.java

package com.drawbridge.utils;

import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Point;

/**
 * This class is intended to represent a simple geometric circle
 * @author Alistair Stead
 *
 */
public class Circle
{
	
	public int radius;
	public int x;
	public int y;
	
	/**
	 * 
	 * @param x - top left
	 * @param y - top left
	 * @param radius
	 */
	public Circle(int x, int y, int radius){
		this.x = x;
		this.y = y;
		this.radius = radius;
	}
	
	public boolean contains(int xIn, int yIn){
		int centerX = x + radius;
		int centerY = y + radius;

		if(((xIn-centerX) * (xIn-centerX)) + ((yIn - centerY) * (yIn - centerY)) < (radius * radius)){
			return true;
		}
		else
			return false;
		
	}
	
	public Point getCenter(){
		int centerX = x + radius;
		int centerY = y + radius;
		return new Point(centerX, centerY);
	}
	
	public int getDiameter(){
		return radius * 2;
	}
	
	public void paint(Graphics g){
		Graphics2D g2 = (Graphics2D) g;
		g2.setColor(Color.black);
		g2.fillOval(x, y, getDiameter(), getDiameter());
	}
	
	@Override
	public String toString(){
		return "Circle x:" + x + ", y:" + y + ", radius:" + radius;
	}

}