Do you think is possible to do something like this with tikz? Since I do not ever know from what begin with, can you tell me if there exist some libraries for doing the shadows, the light in the spheres and the arrows?

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  • @alfC so probably in this case is easier, faster and with better results using some software like Photoshop or Illustrator (it seems vectorial) or the free analogues – Red Mar 25 '14 at 9:35
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    I don't think Photoshop or Illustrator can help in doing properly projected shadows. Most likely you are going to end up with a PSdisasters.com . For "popular" point and click software take a look at Google SketchUp. @PaulGessler, I take that as an encouragement to convert the comment into an answer. – alfC Mar 31 '14 at 6:54

Unfortunately, none of TeX or TeX friend (TikZ, Asymptote, Sketch, epiX) actually do shadows. The closest thing I saw is to project the shadow "manually" (needs coding, a lot probably): http://www.piprime.fr/751/asymptote-using-three_asy-fig0110/.

The safest bet would be to go POVray all the way. If the goal is to just show those "spins" you could get away with Asymptote + 3D (sphere + 3d arrow) + 2D version of it in the plane (circle + 2d arrow).

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