// D3Polys.java
// ３次元 多角形 駆動 クラス
// Copyright (C) 1996, 1997 Y.Nagatani
// nagatani@eken.phys.nagoya-u.ac.jp

import java.applet.Applet;
import java.awt.Graphics;
import java.awt.Color;

import D3Vector;
import D3Poly;
import D3Polys;

public class D3PolysMove extends Applet {
	
	public D3Polys	polys = new D3Polys (5);
	
	public void init() {
		
		polys = new D3Polys (5);
		
		Color	bg = getColorParameter ("background");
		if (bg != null)
			setBackground (bg);
		else
			setBackground (Color.lightGray);
		System.out.println ("D3Poly: background: " + getBackground ());
	}
	public void paint (Graphics g) {
		
		//  本当は g.clearRect で行きたいけど、
		// g.clearRect (0, 0, size().width, size().height);
		// g には g の BackGround があるから。
		g.setColor (getBackground());
		g.fillRect (0, 0, size().width, size().height);
		g.setColor (getForeground());
		//
		polys.paint (g);
		polys.move ();
		// System.out.println ("D3Polys: move¥n");
	}
	public Color getColorParameter (String name) {
		
		String	value = getParameter (name);
		int	nColor;
		try {nColor = Integer.parseInt (value, 16);}
		catch (NumberFormatException e) {
			return	null;
		}
		return	new Color (nColor);
	}
	public int getIntHTML (String Command) throws NumberFormatException {
		
		String Contents = getParameter (Command);
		return	Integer.parseInt (Contents);
	}
	public String[][] getParameterInfo () {
		
		String info[][] = {
			{"background", "hexadecimal color value",
				"background color"}
		};
		return	info;
	}
	public String getAppletInfo () {
		
		return	"D3PolysMove (test applet for D3Polys class)¥n" +
			"Copyright(C) 1996, 1997 Y.nagatani¥n" +
			"nagatani@eken.phys.nagoya-u.ac.jp";
	}
}