//	Scott DeRuiter
//  3/12/2013 - Greenstein: Change from applet to JFrame
//	March 12, 2013
//  Sine.java
//  Creates a multicolored sine curve.

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

public class Sine 
{
	JFrame frame;
	DisplaySine panel;
	
	public static void main (String[] args) 
	{
		Sine sin = new Sine();
		sin.Run();
	}

	public void Run() 
	{
		frame = new JFrame("Sine Wave");
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		
		// Create JPanel and add to frame
		
		panel = new DisplaySine();
		frame.getContentPane().add(panel, BorderLayout.CENTER);	// add panel to frame
				
		frame.setSize(500, 500);		// explicitly set size in pixels
		frame.setVisible(true);		// set to false to make invisible
	}
}

class DisplaySine extends JPanel 
{
	DisplaySine() 
	{
		setBackground(Color.black);
	}

	public void paintComponent(Graphics g) 
	{
		super.paintComponent(g);
		for ( int i = 0; i <= 400; i++ )   
		{
			int value = i % 6 + 1;
			switch ( value )   
			{
				case 1:  g.setColor ( Color.blue );   break;
				case 2:  g.setColor ( Color.black );   break;
				case 3:  g.setColor ( Color.green );   break;
				case 4:  g.setColor ( Color.gray );   break;
				case 5:  g.setColor ( Color.yellow );   break;
				case 6:  g.setColor ( Color.red );   break;
			}
			g.fillOval ( i, 150 + (int)(150 * Math.sin(2 * Math.PI * i / 200)), 10, 10 );
		}
	}
}