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Corona
on 25 Oct 2022
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a=716;
v=255;
l=@linspace;
p=@rescale;
X=l(-10,10,a);
[t,r]=cart2pol(X,X');
colormap(gray.*[1 .78 .3]);
[t,g]=cart2pol(X+2.6,X'+1.4);
image(p(-1*(2*sin(t*10)+60*g.^.2),0,v))
hold
h=exp(-(r-3)).*abs(ifft2(r.^-1.8.*cos(7*rand(a))));
h(r<3)=0;
image(v*ones(a),'AlphaData',p(h,0,1))
camva(3.8)