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import animate; import patterns; settings.tex="pdflatex"; animation a; add("brick",brick(black)); int n=20; for(int i=0; i < 3.5n; ++i) { picture pic; size(pic,100); path g=circle((0,sin(pi/n*i)),1); fill(pic,g,mediumred); fill(pic,g,pattern("brick")); a.add(pic); } label(a.pdf("controls",multipage=false));