Knot type
p — longitude2
q — meridian3
Speed
Color
View
p = 2
q = 3
Trefoil
3 crossings · knot
(R+r cos qt)cos pt
Torus knot T(p,q) · winds p×q
Drag — rotate freely
p, q sliders — knot type
gcd(p,q)=1 — proper knot
Depth — 3D hue by z‑depth