File:Red cylinder.png

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Right circular cylinder, created in Matlab by Jitse Niesen.

Licensing

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Matlab source

clf;
colormap([1 0 0]);
[cx,cy,cz] = cylinder([0.2 0.2], 100);
cc = ones(size(cx));

% rotate by 70 degrees around y axis
M = [ cos(7/18*pi)  sin(7/18*pi); -sin(7/18*pi)  cos(7/18*pi) ];
for k = 1:size(cx,1)
  for l = 1:size(cx,2)
    v = M * [cx(k,l); cz(k,l)];
    cx(k,l) = v(1);
    cz(k,l) = v(2);
  end
end;

surf(cx,cy,cz, cc, 'EdgeColor', 'none', 'FaceColor', 'flat', ...
     'FaceLighting', 'phong');

view(3);
camlight left;
axis equal;
axis off;
print -dpng cyl_tmp.png
system('convert -trim -border 20 -bordercolor white -transparent white cyl_tmp.png cyl.png');