import java.awt.Graphics;
import java.awt.Color;

public class star {
	int r;
	int R;
	int v;
	int x, y;
	int wait;
	int size;
	int w, h;
	int red, green, blue;
	double ra;
	double ra_v;

	/****コンストラクタ****/
	public star(int w, int h){
		this.w = w;
		this.h = h;
		if (w > h)
			R = w/2;
		else
			R = h/2;
		init();
	}

	/******init()******/
	void init() {
		r = (int)(Math.random()*R)/5;
		x = 0;
		y = 0;
		red = (int)(Math.random()*4);
		green = (int)(Math.random()*4);
		blue = (int)(Math.random()*4);
		size = (int)(Math.random()*3)+1;
		wait = (int)(Math.random()*10);
		v = (int)((Math.random()*R)/5)+size;
		ra = Math.PI*2*Math.random();
		ra_v = (Math.PI/16)*Math.random()+Math.PI/64;
	}

	/*****paint()*******/
	public void paint(Graphics off_g, int mode, Color color[][][]){
		if (wait > 0){
			wait--;
		} else {
			if (mode == 1)
				ra += ra_v;
			else if (mode == 2)
				ra -= ra_v;
			r += v;
			x = (int)(Math.cos(ra)*r) + w/2;
			y = (int)(Math.sin(ra)*r) + h/2;
			off_g.setColor(color[red][green][blue]);
			off_g.fillOval(x-(size/2),y-(size/2),size,size);
			if (r >= R)
				init();
		}
	}
}