Module xt 

Cross-track distance calculation implementations.

This module provides different methods for calculating the perpendicular distance from a point to a line segment, which is the core operation in the Douglas-Peucker algorithm.

The choice of distance calculation method affects both accuracy and performance:

• XtGreatCircle: Most accurate for geographic data, works globally
• XtEnu: Good balance of accuracy and performance for regional data
• XtEuclid: Fastest, suitable for projected or non-geographic data

Structs

XtEnu

East-North-Up (ENU) planar projection distance calculation.

XtEuclid

Raw Euclidean distance calculation between coordinates.

XtGreatCircle

Great circle distance calculation using spherical geometry.

Traits

PerpDistance

Trait for calculating perpendicular distance from a point to a line segment.