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Villarceau Circles
"Villarceau Circles" © Tor Olav Kristensen (2004)

For every point on a torus one can draw four different circles through it that all lie on the surface of the torus. Two of these four circles are called Villarceau circles. The four narrow pairs of bands in this image follows such Villarceau circles. All the shapes in this image are made with Constructive Solid Geometry operations with tori only (except for the ground plane of course).

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