import javax.swing.*;
import java.awt.*;

class PieChart extends Chart {
    float   total = 0;

    public PieChart(int[] data) {
	super(data);

	//total up all the data so we can compute pie slices later
	for (int i=0; i< data.length; i++) {
	    total+=data[i];
	}
    }

    public void setData(int[] data) {
	super.setData(data);
	for (int i=0; i< data.length; i++) total+=data[i];
    }

    public void draw(Graphics g) {
	float startangle=0, angle=0;
	for (int i=0; i< data.length; i++) {
	    angle = (360f*data[i])/total;
	    g.setColor(new Color((float)Math.random(),(float)Math.random(),(float)Math.random()));
	    g.fillArc(0,0, width,height, (int)Math.floor(startangle),(int)Math.ceil(angle));
	    startangle += angle;
	}
    }
}