本文實例為大家分享了Matlab及Java實現小時鐘的具體代碼,供大家參考,具體內容如下
一年前曾經用matlab的gui做了一個時鐘,由於是直接用GUIDE和ActiveX控件寫的,程序雖說有許多行,大多數都是自動生成的,自己寫的只有十幾行而已。閒著沒事,就耗費了下午的時間用matlab和Java分別又寫了寫。具體代碼如下:
1.matlab腳本文件:
%%%%%%%%%%%%%%%設置圖像屬性並獲取圖像句柄%%%%%%%%%%%%%%%%%%%%%%%%%%% h=figure('name','我的時鐘','NumberTitle','off','color',[1 1 0]); set(h,'menubar','none','position',[200,200,400,450]); %%%%%%%%%%%%畫出時鐘的外輪廓%%%%%%%%%%%%%% s1=[0:pi/1000:2*pi]; hl=plot(2*cos(s1),2*sin(s1),'black','linewidth',1.5); axis equal title('我的時鐘'); hold on %%%%%%%%%%%繪製錶盤刻度%%%%%%%%%%%%%%%%%% for n=pi*2:-pi/30:pi/30 %繪製錶盤,繪製分鐘的刻度 a1=0.95*cos(n):0.000005*cos(n)/2:cos(n);b1=0.95*sin(n):0.000005*sin(n)/2:sin(n); plot(2*a1,2*b1,'r-'); end for n=pi*2:-pi/6:pi/30 %繪製錶盤,繪製小時的刻度 a1=0.9*cos(n):0.1*cos(n)/2:cos(n);b1=0.9*sin(n):0.1*sin(n)/2:sin(n); plot(2*a1,2*b1,'r-'); end text(1.5,0,'3','FontSize',12) text(-0.05,-1.7,'6','FontSize',12) text(-1.7,0,'9','FontSize',12) text(-0.1,1.7,'12','FontSize',12) %%%%%%%%%%%%%%%%獲取當前時間並進行角度與弧度轉換%%%%%%%%%%%%%%%%%%%%%%%%%%%% axis([-2.1 2.1 -2.1 2.1]) time=datestr(now); sec=pi/2-str2num(time(19:20))*pi/30; min=pi/2-(str2num(time(16:17))+sec/60)*pi/30; hour=pi/2-(str2num(time(13:14))+min/60)*pi/6; w1=-pi/30; w2=-pi/1800; w3=-pi/108000; pausetime=1; %%%%%%%%%%%%%%%%開始繪圖並不斷刷新%%%%%%%%%%%% while 1 axis off x1=0:0.75*cos(sec)/2:0.75*cos(sec);y1=0:0.75*sin(sec)/2:0.75*sin(sec); %根據秒針的位置繪製分針 x2=0:0.6*cos(min)/2:0.6*cos(min);y2=0:0.6*sin(min)/2:0.6*sin(min); %根據分針的位置繪製分針 x3=0:0.45*cos(hour)/2:0.45*cos(hour);y3=0:0.45*sin(hour)/2:0.45*sin(hour); %根據時針的位置繪製分針 hp1=plot(2*x1,2*y1,'r-','linewidth',1.5); hp2=plot(2*x2,2*y2,'b-','linewidth',2); hp3=plot(2*x3,2*y3,'g-','linewidth',3.5); sec=sec+w1*pausetime; %計算一秒以後秒針的角度位置 min=min+w2*pausetime; %計算一秒以後分針的角度位置 hour=hour+w3*pausetime; pause(1); delete(hp1); delete(hp2); delete(hp3); end
2.Java應用文件(文件名為MyClock.java)
import java.awt.*; import java.util.GregorianCalendar; import javax.swing.*; import javax.swing.Timer; import java.util.*; import java.awt.event.*; public class MyClock extends JPanel { final double RAD=Math.PI/180;//角度與弧度的轉化 public void paint(Graphics g) { super.paint(g);//調用父類方法 Graphics2D g2=(Graphics2D)g;//主要用於改變線條粗細 int h=getSize().height;//獲取窗口的長和寬,主要用於當用鼠標改變窗口時,時鐘也跟著變化 int w=getSize().width; int hour,min,sec,hh,mm,ss; double x,y; setBackground(Color.yellow);//設置背景值 g.setColor(Color.black);//畫筆顏色 int r=(Math.min(h, w)/2-50); float x0=w/2;//時鐘中心位置 float y0=h/2; g2.setFont(new Font("楷體",Font.PLAIN,20)); g2.drawString("我的時鐘",165, 50); g2.setFont(new Font("Times New Roman",Font.PLAIN,20)); g2.drawString("Designed by TW",235, 420); g.drawString("12",(int)(w/2)-5,(int)(h/2)-r+30); g.drawString("3",(int)(w/2)-25+r,Math.round(h/2)+10); g.drawString("6",(int)(w/2),(int)(h/2)+r-20); g.drawString("9",(int)(w/2)-r+20,Math.round(h/2)+10); //設置分鐘刻度 之所以沒有用線條,主要是因為drawline的參數要求是整數,因此刻度會不準確 for(int i=1;i<=12;i++) { double buffer=Math.PI*(0.5-i/6.0); int posX = (int)Math.round(x0+r*Math.cos(buffer)); int posY = (int)Math.round(y0-r*Math.sin(buffer)); g.setColor(Color.red); g.fill3DRect(posX, posY, 8, 8, true); } //設置秒鐘刻度 for(int i=1;i<60;i++) { if(i%5!=0) { double buffer= Math.PI*i/30.0; int posX = (int)Math.round(x0+r*Math.cos(buffer)); int posY = (int)Math.round(y0-r*Math.sin(buffer)); g.setColor(Color.black); g.fill3DRect(posX, posY, 6, 6, false); } } //獲取當前系統時間 GregorianCalendar date=new GregorianCalendar(); hour=(int)date.get(Calendar.HOUR); min=(int)date.get(Calendar.MINUTE); sec=(int)date.get(Calendar.SECOND); // System.out.println(hour); // System.out.println(min); // System.out.println(sec); //進行角度換算 ss=90-sec*6; mm=90-min*6; hh=90-hour*30-min/2; //畫出時分秒的指針 g2.setStroke(new BasicStroke(1.0f)); x=(int)(r*0.9*Math.cos(RAD*ss)+x0); y=(int)(r*0.9*Math.sin(RAD*ss)+y0); g.setColor(Color.red); g.drawLine((int)(x0),(int)(y0),(int)x,(int)(h-y)); g2.setStroke(new BasicStroke(2.2f)); x=(int)(r*0.7*Math.cos(RAD*mm)+x0); y=(int)(r*0.7*Math.sin(RAD*mm)+y0); g.setColor(Color.blue); g.drawLine((int)x0,(int)y0,(int)x,(int)(h-y)); g2.setStroke(new BasicStroke(3.4f)); x=(int)(r*0.5*Math.cos(RAD*hh))+x0; y=(int)(r*0.5*Math.sin(RAD*hh))+y0; g.setColor(Color.green); g.drawLine((int)x0,(int)y0,(int)x,(int)(h-y)); } //設置窗口大小 public Dimension getPreferredSize() { return new Dimension(400,450); } // public static void main(String[] args) { Graphics g=null; JFrame frame=new JFrame("我的時鐘"); Container contentPane=frame.getContentPane(); final MyClock tw=new MyClock(); contentPane.add(tw,BorderLayout.CENTER); frame.pack(); frame.setVisible(true); //用於畫板的刷新 int delay=1000; //創建一個監聽事件 ActionListener drawClock=new ActionListener() { public void actionPerformed(ActionEvent evt) { tw.repaint(); } }; //創建一個時間計數器,每一秒觸發一次 new Timer(delay,drawClock).start(); } }
運行結果如下圖:
1.matlab時鐘界面:
2.Java時鐘界面
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