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That One Emoji
on 21 Oct 2022
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u = linspace(-2,2,1024);
s = (1-u/6)/3 ;
t = .2-s'.*(1+cospi(u));
x = t.*cospi(2*u');
y = t.*sinpi(2*u');
z = u'/4-s'.*sinpi(u);
surf(x,y,z,y)
shading interp
axis off equal
colormap copper
lightangle(80,-40)
lightangle(-90,60)
view([0 30])