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Heart
on 19 Oct 2021
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[x,y]=meshgrid(-6.28:.01:6.28);
s=@(p,q)sin(((x-p).^2+(y-q).^2).^0.5);
mesh(x,y,s(-3,-3)-s(3,-3)+s(3,3)-s(-3,3))
colormap(gca,'hsv')
view(0,90)
axis equal off