Catenary

Catenary is a Rust library for calculating catenary curves. It provides tools to model the shape of a hanging flexible chain or cable under its own weight.

Features

• Calculate catenary curves from given parameters
• Easy to integrate with other Rust projects

Installation

Add this to your Cargo.toml:

[dependencies]
catenary = "0.1.0"

Generate coefficient table

In order to quickly find catenary, with 2 points and a length, we can interpolate between catenaries that have been saved into a table. To regenerate this table, do:

cargo run --bin generate_table -- --help

Getting the desired catenary by interpolation from the table is done with this function:

let cat = table.get_catenary::<f64>(&p0, &p1, &l).unwrap();

Or just download them

let path = get_dataset_path().await.unwrap();

Usage

Here is a simple example of how to use Catenary:

extern crate catenary;

use catenary::Catenary;

fn main() {
    let catenary = Catenary::new(1.1, 2.2, 3.3, -4.4, 5.5);
    let (p0, p1) = catenary.end_points();

    let solved = Catenary64::from_points_length(&p0, &p1, catenary.length()).unwrap();

    assert_relative_eq!(catenary.a, solved.a, epsilon = 1e-5);
    assert_relative_eq!(catenary.c, solved.c, epsilon = 1e-5);
    assert_relative_eq!(catenary.h, solved.h, epsilon = 1e-5);
}

License

This project is licensed under the MIT or Apache-2.0 Licenses.

Contribution

Contributions are welcome! Please open an issue or submit a pull request on GitLab.