hull.js

The concavity parameter allows fine-tuning from thin shapes to convex hulls, providing flexibility for different spatial data needs as shown in the usage example.

Supports custom point structures like {lng: x, lat: y} via a format parameter, enabling easy integration with various data sources without preprocessing.

Includes an edge-skip list to improve speed for high-accuracy shapes with low concavity, as noted in the changelog for version 0.2.8.

With minimal parameters—points array, concavity, and optional format—it generates hulls efficiently, as demonstrated in the basic code snippet.