compute_basisfuncsderivs

compas.geometry.compute_basisfuncsderivs(degree, knotvector, i, u, n)

Compute the derivatives of the basis functions for a given parameter value.

Parameters:

degreeint

Degree of the curve.

knotvectorlist[int | float]

Knot vector of the curve.

iint

Knot span index.

ufloat

Parameter value.

nint

Number of derivatives to compute.

Returns:

list[float]

Derivatives of the basis functions.

See also

construct_knotvector

knotvector_to_knots_and_mults

knots_and_mults_to_knotvector

find_span

compute_basisfuncs

References

The NURBS Book. Chapter 2. Page 72. Algorithm A2.3.