Additional images: Anaglyph, Anaglyph Wireframe, Parallel Stereo
Torus Surface Parametric Equations
halftwists := Round(ff);
x = aa * (cos(v) + u * cos(halftwists * v / 2) * cos(v));
y := aa * (sin(v) + u * cos(halftwists * v / 2) * sin(v));
z := aa * u * sin(v / 2);
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