x = r ⋅ cos(θ)
y = r ⋅ sin(θ)
with r = sin(n ⋅ θ) + c, the angle θ in degrees runs from 0 bis u. If you like, change the step-size further below.
Is n a rational number, closed curves result.
Please choose u minimal, e. g. for n = 5 with c = 0 a rotation of u = 180° is sufficient. For further reduction (or for fun (.svg)/(.pdf)) enlarge the step size please:
Draw a rose in an astroid (.html), have more fun with (.html).
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