pub fn clothoid_g1_fit(
start: &Pose2D,
goal: &Pose2D,
) -> RoboticsResult<(f64, f64, f64)>Expand description
Solve the G1 Hermite interpolation problem: find a clothoid connecting
two poses (x0, y0, theta0) and (x1, y1, theta1).
Returns (kappa0, kappa1, length) – initial curvature, sharpness, arc length.
Uses an iterative Newton-Raphson method on the clothoid parameters.