ContTwistedLines Definition
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A hyperboloid of one sheet is a ruled surface, that is, it can be formed from a sequence of straight lines. Further, it is doubly ruled: two such sequences can
be combined into a lattice, making the form structurally efficient. Conceptually, a hyperboloid can be defined by twisting two parallel circles that have their
centres on a common normal line.
The hyperboloid's independent parameters are the radii of the two circles and the twist of one circle relative to the other. Starting with the Controller from
the sample, add a twist control to one circle.
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ContTwistedLines Manipulations