转动
<FONT face="Courier New">t=; <BR>t=mod(t,90); <BR>tr=randn(size(t)); <BR>r=cos(t).*cos(t*6)+cos(t*9).*cos(tr*9); <BR>x=r.*cos(t+pi/2); <BR>y=r.*sin(t+pi/2); <BR>H=plot(x,y,'.','markersize',2); <BR>k=1; <BR>xlabel('Please press "space" key and stop this program!',... <BR>'fontsize',12,'color','r'); <BR>d=0; <BR>while k <BR> s=get(gcf,'currentkey'); <BR> if strcmp(s,'space'); <BR> clc;k=0; <BR> end <BR> t=t+cos(d+1); <BR> r=cos(t)+cos(5*t).*cos(t*5)+cos(t*9).*cos(tr); <BR> x=r.*cos(t+pi/2); <BR> y=r.*sin(t+pi/2); <BR> set(H,'xdata',x,'ydata',y); <BR> pause(0.1); <BR>end <BR>figure(gcf); </FONT><BR>
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