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【Matlab编程】Matlab及Java小时钟

​ 一年前曾经用matlab的gui做了一个时钟,由于是直接用GUIDE和ActiveX控件写的,程序虽说有许多行,大多数都是自动生成的,自己写的只有十几行而已。闲着没事,就耗费了下午的时间用matlab和Java分别又写了写。具体代码如下:
1.matlab脚本文件:

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%%%%%%%%%%%%%%%设置图像属性并获取图像句柄%%%%%%%%%%%%%%%%%%%%%%%%%%%
h=figure('name','我的时钟','NumberTitle','off','color',[1 1 0]);
set(h,'menubar','none','position',[200,200,400,450]);
%%%%%%%%%%%%画出时钟的外轮廓%%%%%%%%%%%%%%
s1=[0:pi/1000:2*pi];
hl=plot(2*cos(s1),2*sin(s1),'black','linewidth',1.5);
axis equal
title('我的时钟');
hold on
%%%%%%%%%%%绘制表盘刻度%%%%%%%%%%%%%%%%%%
for n=pi*2:-pi/30:pi/30 %绘制表盘,绘制分钟的刻度
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 %绘制表盘,绘制小时的刻度
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)
%%%%%%%%%%%%%%%%获取当前时间并进行角度与弧度转换%%%%%%%%%%%%%%%%%%%%%%%%%%%%
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;
%%%%%%%%%%%%%%%%开始绘图并不断刷新%%%%%%%%%%%%
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); %根据秒针的位置绘制分针
x2=0:0.6*cos(min)/2:0.6*cos(min);y2=0:0.6*sin(min)/2:0.6*sin(min); %根据分针的位置绘制分针
x3=0:0.45*cos(hour)/2:0.45*cos(hour);y3=0:0.45*sin(hour)/2:0.45*sin(hour); %根据时针的位置绘制分针
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; %计算一秒以后秒针的角度位置
min=min+w2*pausetime; %计算一秒以后分针的角度位置
hour=hour+w3*pausetime;
pause(1);
delete(hp1);
delete(hp2);
delete(hp3);
end

2.Java应用文件(文件名为MyClock.java)

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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;//角度与弧度的转化


public void paint(Graphics g)
{
super.paint(g);//调用父类方法
Graphics2D g2=(Graphics2D)g;//主要用于改变线条粗细
int h=getSize().height;//获取窗口的长和宽,主要用于当用鼠标改变窗口时,时钟也跟着变化
int w=getSize().width;
int hour,min,sec,hh,mm,ss;
double x,y;
setBackground(Color.yellow);//设置背景值
g.setColor(Color.black);//画笔颜色
int r=(Math.min(h, w)/2-50);
float x0=w/2;//时钟中心位置
float y0=h/2;

g2.setFont(new Font("楷体",Font.PLAIN,20));
g2.drawString("我的时钟",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);

//设置分钟刻度 之所以没有用线条,主要是因为drawline的参数要求是整数,因此刻度会不准确
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);
}
//设置秒钟刻度

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);
}
}
//获取当前系统时间

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);
//进行角度换算
ss=90-sec*6;
mm=90-min*6;
hh=90-hour*30-min/2;
//画出时分秒的指针
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));

}

//设置窗口大小
public Dimension getPreferredSize()
{
return new Dimension(400,450);
}
//
public static void main(String[] args)
{
Graphics g=null;
JFrame frame=new JFrame("我的时钟");
Container contentPane=frame.getContentPane();
final MyClock tw=new MyClock();
contentPane.add(tw,BorderLayout.CENTER);
frame.pack();
frame.setVisible(true);
//用于画板的刷新
int delay=1000;
//创建一个监听事件
ActionListener drawClock=new ActionListener()
{
public void actionPerformed(ActionEvent evt)
{
tw.repaint();
}
};

//创建一个时间计数器,每一秒触发一次
new Timer(delay,drawClock).start();

}
}

运行结果如下图:

1.matlab时钟界面:
图1

2.Java时钟界面

图2

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