kadai2-version2

kadai2-version2.java

package step02;


import java.awt.BasicStroke;
import java.awt.Color;

/**************************************************
 *	DigitalClockPanel.java
 *	------------------------------
 *
 *	Version: 1.00
 *	last change: Feb 2005
 *
 *	written by Akira Nakano
 *	email: nakano@kurume-nct.ac.jp
 *	copyrighted (c) by Nakano Lab.
 *
 **************************************************/

//既存のパッケージの利用

//import java.awt.Graphics;
//import java.awt.Font;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Point;
import java.awt.geom.Line2D;
import java.text.SimpleDateFormat;
import java.util.Calendar;

//import javax.swing.JPanel;
import javax.swing.JPanel;

@SuppressWarnings("unused")
public class ClockPanel extends JPanel implements Runnable{

	/**
	 * コンストラクタ
	 */
	public ClockPanel(){
		super();

		//Thredクラスのオブジェクトの作成
		Thread thread = new Thread(this,"Timer");

		//並列処理(Thread)の開始
		thread.start();

		System.out.println("ClockPanelコンストラクタ終了");
	}

	/**
	 * 並列処理(Thread)の実行
	 */
	public void run(){
		while(true){
			//sleep();
			repaint();
		}
	}

	/**
	 * 課題３：日付情報の描画
	 */
	public void paint(Graphics g){
		Graphics2D g2 = (Graphics2D)g;
		System.out.println("描画");
		int font_size = 20; //フォントのサイズ
		int grid = 10;  //余白スペースのサイズ
		g.setFont(new Font("TimesRoman", Font.BOLD, font_size)); //描画する文字のフォント設定
		g.clearRect(0,0,this.getWidth(), this.getHeight()); //背景をベタ塗り（初期化）。背景色は白
		/**↓↓↓↓↓ 課題３ ↓↓↓↓↓**/
		//デジタル時計の情報（日付情報を調べ文字列にする）を取得
		String time_str = getTime();
		System.out.println(time_str);
		//デジタル時計の文字の描画
		g.drawString(time_str, 60, 30);
		/**↑↑↑↑↑ 課題３ ↑↑↑↑↑**/

		//アナログ時計の情報を計算
		int r = 200; //半径
		Point edge = new Point(grid*3, font_size+grid*3);  //円の左上隅の座標
		Point center = new Point(edge.x+r, edge.y+r);  //円の中心の座標

		Point edge_h = getHourHandPoint(center, (int)(r*0.6)); //短針の先端の座標を求める
		Point edge_m = getMinuteHandPoint(center, r); //長針の先端の座標を求める
		Point edge_s = getSecondHandPoint(center, r); //秒針の先端の座標を求める

		/**↓↓↓↓↓ 課題４ ↓↓↓↓↓**/
		//アナログ時計の描画
		g.drawOval(edge.x, edge.y, r * 2, r * 2);
		Calendar c = Calendar.getInstance();
		
		//短針の描画
		g2.setColor(
			Color.getHSBColor(
			(float)c.get(Calendar.HOUR)* 3,
			(float)c.get(Calendar.HOUR) * 2,
			(float)c.get(Calendar.HOUR)
			)
		);
		BasicStroke bs = new BasicStroke(4.0f);
		g2.setStroke(bs);
		g2.draw(new Line2D.Double(edge_h, center));

		//長針の描画
		g2.setColor(
			Color.getHSBColor(
			(float)c.get(Calendar.MINUTE) * 3,
			(float)c.get(Calendar.MINUTE) * 2,
			(float)c.get(Calendar.MINUTE)
			)
		);
		bs = new BasicStroke(2.0f);
		g2.setStroke(bs);
		g2.draw(new Line2D.Double(edge_m, center));

		//秒針の描画
		g2.setColor(
			Color.getHSBColor(
				(float)c.get(Calendar.SECOND) * 3,
				(float)c.get(Calendar.SECOND) * 2,
				(float)c.get(Calendar.SECOND)
			)
		);
		bs = new BasicStroke(1.0f);
		g2.setStroke(bs);
		g2.draw(new Line2D.Double(edge_s, center));
		/**↑↑↑↑↑ 課題４ ↑↑↑↑↑**/
	}
	
	public double second_(){
		Calendar c = Calendar.getInstance();
		return (((double)c.get(Calendar.SECOND) + ((double)c.get(Calendar.MILLISECOND) / 1000)) / 60);
	}
	
	public double min_(){
		Calendar c = Calendar.getInstance();
		return  (((double)c.get(Calendar.MINUTE) + second_()) / 60);
	}

	/**
	 * 課題１：Calendarクラスを用いた日付情報の獲得
	 */
	public String getTime(){
		Calendar c = Calendar.getInstance();
		SimpleDateFormat sdf = new  SimpleDateFormat("yyyy年  MM月  dd日  hh時  mm分  ss秒");
		String str = sdf.format(c.getTime());
		return str;
	}

	/**
	 * 課題２：短針の先の座標を計算する
	 * 第一引数は中心座標、第二引数は半径
	 */
	public Point getHourHandPoint(Point center, int r){
		Calendar c = Calendar.getInstance();
		double rad = Math.PI * 2 *(((double)(c.get(Calendar.HOUR) % 12) / 12));
		double y = Math.cos(rad + Math.PI) * r + center.y;
		double x = Math.sin(rad) * r + center.x;
		return new Point((int)x, (int)y);
	}
	
	/**
	 * 課題２：長針の先の座標を計算する
	 * 第一引数は中心座標、第二引数は半径
	 */
	public Point getMinuteHandPoint(Point center, int r){
		Calendar c = Calendar.getInstance();
		double rad = Math.PI * 2 * (((double)c.get(Calendar.MINUTE) + second_()) / 60);
		double y = Math.cos(rad + Math.PI) * r + center.y;
		double x = Math.sin(rad) * r + center.x;
		return new Point((int)x, (int)y);
	}

	
	/**
	 * 課題２：秒針の先の座標を計算する
	 * 第一引数は中心座標、第二引数は半径
	 */
	public Point getSecondHandPoint(Point center, int r){
		Calendar c = Calendar.getInstance();
		double rad = 2 * Math.PI * (((double)c.get(Calendar.SECOND) + ((double)c.get(Calendar.MILLISECOND) / 1000)) / 60);
		double y = Math.cos(rad + Math.PI) * r + center.y;
		double x = Math.sin(rad) * r + center.x;
		return new Point((int)x, (int)y);
	}

	/**
	 * 100ms間のプログラムの停止
	 */
	public void sleep(){
		try{
			System.out.println("スリープ");
			Thread.sleep(1000);
		}
		catch(InterruptedException e){
			System.out.println("例外処理:"+e);
		}
	}
}