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% clc;clear;close all; rand('state',0); set(gcf,'DoubleBuffer','on'); N=256; % Éú³É״̬¾ØÕó´óСµÄ¿ØÖƲÎÊý S=ones(N); % Éú³É״̬¾ØÕóS % S(N/2,N/4:N*3/4)=0; % ÉèÖÃ״̬¾ØÕóµÄ³õʼֵ S(N/2:N*3/4,N/2)=0; % ÉèÖÃ״̬¾ØÕóµÄ³õʼֵ Ii=imshow(S); % ÏÔʾ״̬¾ØÕó ti=title(['time = 0',', N=0'],'Fontsize',14,'Fontname','Times New Roman'); % ÏÔʾʱ¼ä T=0; % ¼Ç¼ʱ¼äµÄ²ÎÊý for k=1:30000; % Ñ»·¼ÆËã xt=4; % ²úÉúÁ£×ÓµÄλÖà yt=N/2; % ²úÉúÁ£×ÓµÄλÖà Ss=0; % ¿ØÖÆÏÂÃæÑ»·ÊÇ·ñÖÕÖ¹µÄ²ÎÊý while Ss<1; % ¼ÆË㵱ǰÁ£×ÓµÄÎü¸½¹ý³Ì [dx,dy]=choose_D(0.25,0.25,0.25,0.25); % ¼ÆËãÁ£×ÓÎ»ÒÆÁ¿ xt=xt+dx; % ¼ÆËãÏÂһʱ¿ÌÁ£×ÓµÄλÖà yt=yt+dy; % ¼ÆËãÏÂһʱ¿ÌÁ£×ÓµÄλÖà if xt<2.5|xt>N-1.5||yt<2.5|yt>N-1.5; % ÅжÏÁ£×ÓÊÇ·ñÒݳö±ß½ç Ss=2; % °ÑSs¸³ÖµÎª2,´Ó¶ø¿ÉÒÔÍ˳öÑ»· end if [S(xt+1,yt)+S(xt-1,yt)+S(xt,yt+1)+S(xt,yt-1)]<3.5; % ÅжϽüÁÚÊÇ·ñÓÐÁ£×Ó S(xt,yt)=0; % ¹Ì¶¨µ±Ç°Ô˶¯µÄÁ£×Ó Ss=2; % °ÑSs¸³ÖµÎª2,´Ó¶ø¿ÉÒÔÍ˳öÑ»· end end set(Ii,'CData',S); % ÏÔʾµ±Ç°×´Ì¬¾ØÕó T=T+1; % ÀÛ¼Óʱ¼ä²ÎÊý set(ti,'String',['time = ',num2str(T),', N=',num2str(sum(sum(1-S))-[N/4+1])]); % ¸üÐÂʱ¼ä²ÎÊý pause(0.01); % ÔÝͣһϣ¬ÏÔʾ¶¯»Ð§¹û end |
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