Inspired by this object:

http://www.shutterstock.com/pic-94505617/stock-photo--d-infinity-shape-d-render-illustration.html

I created a simple Povray union. The resuld you can see attached.

I would like to change the whole object into a single "sphere_sweep" and
I'd like to have a closed formula that calculates the positions of all
spheres at once, with "smooth" transitions between the 3 3/4 torii, so
no cylindrical parts between them.

I tried 3 polynomials (one for each of the X, Y, Z coordinates) but it
was harder than it looked to me. :-(

Any ideas, suggestions?

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Attachments:
Download 'loop3d.pov.txt' (2 KB) Download 'loo-opt.gif' (1936 KB)

Preview of image 'loo-opt.gif'