// D3PolysAnime.java
// ３次元 アニメーション double buffering
// Copyright (C) 1996, 1997 Y.Nagatani
// nagatani@eken.phys.nagoya-u.ac.jp

import java.awt.*;

import D3PolysMove;

public class D3PolysAnime extends D3PolysMove implements Runnable {

	Thread		thread = null;
	Image		imImage;		// double buffering image
	Graphics	gImage;
	public int 	interval;		// interval (m.sec.)
	
	public void init() {
	
		super.init();
	
		try {interval = getIntHTML ("interval");}
		catch (NumberFormatException e) {
			interval = 100;
		}
		if (interval < 0)
			interval = 0;
		System.out.println ("D3Poly: interval: " + interval + "¥n");
		
		imImage = createImage (size().width, size().height);
		gImage = imImage.getGraphics ();
	}
	
	public void paint (Graphics g) {
		
		super.paint (gImage);
		g.drawImage (imImage, 0, 0, null);
	}
	
	public void update (Graphics g) {
 	
		this.paint (g);
	}
	
	public void run () {
	
		while (thread.isAlive ()) {
			repaint();
			try {
				Thread.sleep (interval);	// Delay Time
			}
			catch (InterruptedException e) {}
		}
	}
	
	public void start() {
		
		if( thread == null ) {
			thread = new Thread (this);
			thread.start();          //スレッド起動
		}
	}
	
	public void stop() {
	
		if( thread != null ) {
			thread.stop();           //スレッド停止
			thread = null;           //スレッド消去
		}
	}
	public String[][] getParameterInfo () {
		
		String info[][] = {
			{"background", "hexadecimal color value",
				"background color"},
			{"interval", "integer",
				"flush interval (mili second)"}
		};
		return	info;
	}
	public String getAppletInfo () {
		
		return	"D3PolysAnime (test applet for D3Polys class)¥n" +
			"Copyright(C) 1996, 1997 Y.nagatani¥n" +
			"nagatani@eken.phys.nagoya-u.ac.jp";
	}
}