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（1） 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。（2） 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(i) ),

2、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', 'linewidth&

3、#39;, 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);（3） 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 <=12 N Y 绘制时刻度线：pl

4、ot(0.8*cos(theta2(i),0.97*cos(theta2(i),0.8*sin(theta2(i),0.97*sin(theta2(i);i +j <=12 Y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); set(h,'color','black');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*

5、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)*2*pi; plot(0,0.85*cos(theta_s),0,0.85*sin(theta_s),'black','linewidth'

6、,2);加上循环使表走起来：while（1）结束（4） 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*pi; x=cos(theta1); y=sin(theta1); h=plot(x,y); % 绘制圆 set(h,'linewidth',6) % 设置圆的属性 hold on % 保留已经绘制的图形 axis equal % 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; for i=1:length(theta2) % 循环语句绘制时刻度线h=plot(0.8*cos(t

7、heta2(i),0.97*cos(theta2(i),0.8*sin(theta2(i),0.97*sin(theta2(i); set(h,'linewidth',3) set(h,'color','black') end theta3=0:2*pi/60:2*pi; for i=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'

8、;,'black') end 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：year 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

9、(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); 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) ho

10、ld on axis equal plot(0,0,'.','Markersize',50); theta2=0:2*pi/12:2*pi; for i=1:length(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') end theta3=0:2*pi/60:2*pi; for i=1:lengt

11、h(theta3) h=plot(0.9*cos(theta3(i),0.97*cos(theta3(i),0.9*sin(theta3(i),0.97*sin(theta3(i); set(h,'color','black') end 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','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/