Matlab-时钟绘制

1、一题目请用 Matlab 编写程序，绘制一个时钟表盘和时针、分针、秒针，且时钟能根据计算机系统当前时间，自动更新时针、分针、秒针的位置。表盘和时针、分针、秒针使用 plot 函数绘制，计算机系统当前时间使用 clock 函数获取。二操作方法与实验步骤（一） 总体设计思想设计时钟，根据适中的样式先画出表盘，根据数学公式画出时分刻度以及时针分针，再根据 clock 函数读取计算机当前时间，最后加上循环语句让时钟走起来。（二） 所用到的数学公式1. 绘制表盘（圆）： x = cos (theta1); y = sin (theta1);2. 绘制时分刻度：Plot ( 0.9*cos (theta3

2、(i) ), 0.97*cos(theta3(i) ) ,0.9*sin (theta3(i) ),0.97*sin( theta3(i) ) );3.绘制时针分针：theta_h=0.5 * pi-(h+m/ 60)/12*2*pi;plot ( 0,0.6 * cos(theta_h), 0,0.6*sin(theta_h),'blue' ,'linewidth', 2);theta_m=0.5*pi-m/ 60*2*pi;plot (0,0.7*cos(theta_m),0,0.7*sin(theta_m),'cyan' , 'li

3、newidth', 2);theta_s=0.5*pi-(s/ 60)*2*pi;plot (0,0.85*cos(theta_s),0,0.85*sin(theta_s),'black' , 'linewidth' , 2)4.clock 读取计算机当前时间： C=clock; h=C(4); m=C(5); s=C(6);（三） 程序流程图开始用极坐标与直角坐标的关系绘制圆盘：theta1=0:2*pi/100:2*pi;x=cos(theta1);y=sin(theta1);h=plot(x,y);i=1；j=1;i <=12NY绘制时刻度线

4、：plot(0.8*cos(theta2(i),0.97*cos(theta2(i),精选文库i +j <=12Y绘制分刻度线：plot(0.9*cos(theta3(i),0.97*cos(theta3(i),0.9*sin(theta3(i),0.97*sin(theta3(i);j +读取计算机当前时间并画出时分秒针：C=clock; h=C(4); m=C(5); s=C(6);theta_h=0.5*pi-(h+m/60)/12*2*pi;plot(0,0.6*cos(theta_h),0,0.6*sin(theta_h),'blue', 'linewi

5、dth',2);theta_m=0.5*pi-m/60*2*pi;plot(0,0.7*cos(theta_m),0,0.7*sin(theta_m),'cyan', 'linewidth',2);theta_s=0.5*pi-(s/60)*2*pi;plot(0,0.85*cos(theta_s),0,0.85*sin(theta_s),'black', 'linewidth',2);加上循环使表走起来：while （1）结束（四） 实验代码1. 利用极坐标与直角坐标的关系绘制圆。theta1=0:2*pi/100:2*

6、pi;-2精选文库x=cos(theta1);y=sin(theta1);h=plot(x,y);% 绘制圆set(h,'linewidth',6)% 设置圆的属性holdon% 保留已经绘制的图形axisequal% 是横纵坐标系的单位长度相同2. 绘制时刻度线与分刻度线theta2=0:2*pi/12:2*pi;fori=1:length(theta2)% 循环语句绘制时刻度线h=plot(0.8*cos(theta2(i),0.97*cos(theta2(i),0.8*sin(theta2(i),0.97*sin(theta2(i);set(h,'linewidt

7、h',3)set(h,'color', 'black')endtheta3=0:2*pi/60:2*pi;fori=1:length(theta3)% 循环语句绘制分刻度线h=plot(0.9*cos(theta3(i),0.97*cos(theta3(i),0.9*sin(theta3(i),0.9 7*sin(theta3(i);set(h,'color', 'black')end-3精选文库3. 绘制时针分针并读取计算机当前时间C=clock;%调用 clock函数读取当前时间h=C(4);%clock 函数： ye

8、ar month day hour minute seconds 4，5，6分别代表m=C(5);时分秒s=C(6);theta_h=0.5*pi-(h+m/60)/12*2*pi;plot(0,0.6*cos(theta_h),0,0.6*sin(theta_h),'blue', 'linewidth',2);theta_m=0.5*pi-m/60*2*pi;plot(0,0.7*cos(theta_m),0,0.7*sin(theta_m),'cyan', 'linewidth',2);theta_s=0.5*pi-(s/60

9、)*2*pi;plot(0,0.85*cos(theta_s),0,0.85*sin(theta_s),'black', 'linewidth',2);4. 让时钟走起来完成实验while(1)theta1=0:2*pi/100:2*pi;X=cos(theta1);y=sin(theta1);h=plot(x,y);set(h,'linewidth',6)holdonaxisequalplot(0,0,'.', 'Markersize',50);theta2=0:2*pi/12:2*pi;fori=1:lengt

10、h(theta2)h=plot(0.8*cos(theta2(i),0.97*cos(theta2(i),0.8*sin(theta2(i),0.97*sin(theta2(i);set(h,'linewidth',3)set(h,'color', 'black')endtheta3=0:2*pi/60:2*pi;fori=1:length(theta3)h=plot(0.9*cos(theta3(i),0.97*cos(theta3(i),0.9*sin(theta3(i),0.9 7*sin(theta3(i);-4精选文库set(h,

11、9;color', 'black')endC=clock;h=C(4);m=C(5);s=C(6);theta_h=0.5*pi-(h+m/60)/12*2*pi;plot(0,0.6*cos(theta_h),0,0.6*sin(theta_h),'blue', 'linewidth',2);theta_m=0.5*pi-m/60*2*pi;plot(0,0.7*cos(theta_m),0,0.7*sin(theta_m),'cyan', 'linewidth',2);theta_s=0.5*pi-(s/60)