Thanks to [url=https://twitter.com/Yugemaku]@Yugemaku[/url][br][br]https://twitter.com/Yugemaku/status/1556308725886988290

[code]a = 12[br]b = 1[br]c = 9[br][br]t = Slider(0, 2 pi, 0.01, 1, 160, false, true, false, false)[br][br]f(x) = x + c * sin(x / a + t) - t * c[br][br]fx(x) = (7+2 cos(f(x))) cos(x / a / b)[br]fy(x) = (7+2 cos(f(x))) sin(x / a / b)[br]fz(x) = 2 sin(f(x))[br][br]Cord = Curve(fx(k), fy(k), fz(k), k, 0, 2 pi * a *b)[br][br]r2 = 0.7[br]Tor = Surface((7 + r2 cos(v)) cos(u), (7 + r2 cos(v)) sin(u), r2 sin(v), u, 0, 2pi, v, 0, 2pi)[br][/code]