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Aurora
on 26 Oct 2022
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a=716;
v=255;
l=@linspace;
p=@rescale;
X=l(10,-10,a);
c=flip(cool);
c(:,3)=l(1,.2,v+1);
c(1,:)=[0 0 0];
[x,y]=meshgrid(X,(X-10)');
[t,r]=cart2pol(X,X');
colormap(c)
y(y<(.05*(x+rand(1,a)).^2)-15)=0;
image(zeros(a))
hold
image(p(-y,0,v),'AlphaData',p(y.*abs(ifft2(r.^-2.2.*cos(7*rand(a)))),0,1))
camva(3.8)