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on 20 Oct 2021
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%Iron egg is a Chinese Delicacy,the egg would have been marinated and cooked thousands of times,
% to ensure the rigidity, at the same time, its size reduced to 1/2, thus ensuring the aroma
% per cubic inch.
a=2.5;
b=1;
k=.4;
[t,z]=meshgrid(linspace(0,2*pi,1000),linspace(-b,b,1000));
r=sqrt((1-b*z.^2)/a./(1+k*z));
I=image;
I=I.CData;
l=surf(r.*cos(t),r.*sin(t),z,'edgecolor','none');
colormap(flip(parula,1));
axis equal off;
material shiny;
camlight;
lighting gouraud;
%lighting flat
view(20,-40);
l.CData= imresize(I,1000/64);
Image
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