// Hands.java
// 時計の針
// Copyright (C) 1996, 1997 Y.Nagatani
// nagatani@eken.phys.nagoya-u.ac.jp

import Poly;
import java.applet.Applet;
import java.awt.*;
import java.util.Date;

public class Hands extends Applet {
	public Poly	handSec,	handMin,	handHour,
			dot;
	
	public void init () {
		
		super.init ();
		int	xSize = this.size().width,
			ySize = this.size().height;
		
		handSec  = new Poly (this, xSize, ySize, 4);
		handMin  = new Poly (this, xSize, ySize, 3);
		handHour = new Poly (this, xSize, ySize, 3);
		
		handSec.setForm (0, -0.01, 1.0);
		handSec.setForm (1, +0.01, 1.0);
		handSec.setForm (2, +0.01, 0.0);
		handSec.setForm (3, -0.01, 0.0);
		handSec.setTranslate (0.5, 0.5);
		
		handMin.setForm (0,   0.0,  1.0);
		handMin.setForm (1,  +0.1, -0.1);
		handMin.setForm (2,  -0.1, -0.1);
		handMin.setTranslate (0.5, 0.5);
		
		handHour.setForm (0,   0.0,  1.0);
		handHour.setForm (1,  +0.2, -0.1);
		handHour.setForm (2,  -0.2, -0.1);
		handHour.setTranslate (0.5, 0.5);
		
		handSec.setColor  (Color.white);
		handMin.setColor  (Color.blue);
		handHour.setColor (Color.red);
		
		handSec.setScale  (0.5);
		handMin.setScale  (0.45);
		handHour.setScale (0.3);
		
		dot = new Poly (this, xSize, ySize, 3);
		dot.setScale (0.1);
		dot.setColor (Color.green);
		
		Color	colorSec  = getColorParameter("sec"),
			colorMin  = getColorParameter("min"),
			colorHour = getColorParameter("hour"),
			colorDot  = getColorParameter("dot");
		if (colorSec != null)
			handSec.setColor (colorSec);
		if (colorMin != null)
			handMin.setColor (colorMin);
		if (colorHour != null)
			handHour.setColor (colorHour);
		if (colorDot != null)
			dot.setColor (colorDot);
		
		Color	bg = getColorParameter("bgcolor");
		if (bg != null)
			this.setBackground (bg);
	}
	
	public void paint (Graphics g) {
		
		g.setColor (getBackground());
		g.fillRect (0, 0, size().width, size().height);
		g.setColor (getForeground());
		
		for (int n = 0 ; n < 12 ; n++) {
			double	arg = Math.PI/2 - 2.0*Math.PI * n / 12;
			dot.setTranslate (0.5 + 0.45 * Math.cos (arg),
					  0.5 - 0.45 * Math.sin (arg));
			dot.setRotate (Math.PI/6 - 2.0*Math.PI * n / 12);
			dot.paint (g);
		}
		
		setParameters ();
		handHour.paint (g);
		handMin.paint (g);
		handSec.paint (g);
	}
	public void setParameters () {
		
		Date date = new Date();
		int nHour = date.getHours();
		int nMin  = date.getMinutes();
		int nSec  = date.getSeconds();
		
		handSec.setRotate
			(Math.PI - 2.0*Math.PI * nSec / 60);
		handMin.setRotate
			(Math.PI - 2.0*Math.PI * (60*nMin  + nSec) / 60 / 60);
		handHour.setRotate
			(Math.PI - 2.0*Math.PI * (60*nHour + nMin) / 60 / 12);
	}
	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 getIntParameter (String Command)
					throws NumberFormatException {
		
		String Contents = getParameter (Command);
		return	Integer.parseInt (Contents);
	}
	public String[][] getParameterInfo () {
		
		String info[][] = {
			{"sec", "rrggbb (hexadecimal color value)",
				"second color"},
			{"min", "rrggbb (hexadecimal color value)",
				"minute color"},
			{"hour", "rrggbb (hexadecimal color value)",
				"hour color"},
			{"dot", "rrggbb (hexadecimal color value)",
				"dots color"},
			{"bgcolor", "rrggbb (hexadecimal color value)",
				"background color"}
		};
		return	info;
	}
	public String getAppletInfo () {
		
		return	"Hands (a part for JClock)\n" +
			"Copyright(C) 1996, 1997 Y.nagatani\n" +
			"nagatani@eken.phys.nagoya-u.ac.jp";
	}
}