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xmas tree 2
on 26 Oct 2022
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n=100;
f=1/100;
c=summer;
c(7:3:1/f,:)=lines(32);
for i=1:1/f
z = i*f.*exp(2i*pi*(0:n)/n)+pi*(i/2)*f.*exp(2i*pi*10*i*f);
zj=[z;z(mod((0:n)*(1/f-i+1),n)+1)];
line(imag(zj),(1/f-i)/10+real(zj),i*ones(size(imag(zj))),'color',c(i,:));
end
axis equal off