Module spline 

Pure spline math — Catmull-Rom path sampling with twist (banking).

Provides open and closed spline evaluation from control points, producing evenly-spaced samples with position, forward, right, up basis vectors and parametric t values.

Structs

SplineControlPoint

A single control point on a Catmull-Rom spline.

SplineSample

A sampled point along a spline with computed basis vectors.

Functions

catmull_rom

Catmull-Rom spline interpolation between four points.

catmull_rom_scalar

Catmull-Rom interpolation for a single scalar value.

compute_gap_ranges

Compute parametric t-ranges where gap_after is true.

gap_at

Return the gap range containing t, or None.

is_in_gap

Check if parametric t falls within any gap range.

rotate_around_axis

Rotate a vector around an axis by an angle in radians (Rodrigues’ formula).

sample_closed_spline

Sample a closed-loop Catmull-Rom spline at approximately spacing meters apart.

sample_open_spline

Sample an open Catmull-Rom spline at approximately spacing meters apart.