Calculate distances between two coordinates using vincenty formulae.

This Rust module provides functions for calculating the geodesic distance between two points specified by latitude/longitude on the surface of an ellipsoid. The computation is based on the Vincenty's formulae, known for their high accuracy.

Features:

• High Precision: The module is designed to return results with a precision of up to 6 decimal places.

• Custom Error Handling: The module uses Rust's Result type for error handling, ensuring that any issues during computation are handled gracefully and informatively.

• Convenient Input Types: The module provides two functions for distance calculation that accept different input types: one takes geo_types::geometry::Coord objects, and the other takes points as f64 parameters directly.

Add the module to your Rust project and use it as follows:

use geo_types::geometry::Coord;
use vincenty_core::{distance_from_coords, distance_from_points};

let x1 = 40.712776;
let y1 = -74.005974;
let x2 = 34.052235;
let y2 = -118.243683;
let coord1 = Coord { x: x1, y: y1 };
let coord2 = Coord { x: x2, y: y2 };

let distance1 = distance_from_coordinates(&coord1, &coord2);
let distance2 = distance_from_points(x1, y1, x2, y2);
assert_eq!(distance1, distance2);

The module includes unit tests for its main functions. To run these tests, use the following command:

$ cargo test

Please note that the algorithm performs a maximum of 200 iterations to find a result within a specified threshold 1e-9. If the algorithm fails to converge within these iterations, an error is returned.

Feel free to fork this module and submit pull requests for any enhancements or bug fixes. Make sure to include unit tests for any new functionality.

This module is available under the MIT License.