cute-c2

A 2D collision library for Rust. Check out the original c2.h library in the cute headers repository by Randy Gaul. This rust wrapper supports collision detection between Circles, AABBs, Capsules and up to 8-sided convex Polygons. There is an example program in cute-c2-examples.

API example:

use c2::{prelude::*, AABB, Circle, Capsule, Poly, Transformation, Rotation};
use std::f32::consts::PI;

fn main() {
    let circle = Circle::new([0.0, 0.0], 15.0);
    let aabb = AABB::new([10.0, 5.0], [20.0, 30.0]);

    let collided = circle.collides_with(&aabb);
    assert!(collided);

    let capsule = Capsule::new([5.0, 5.0], [15.0, 10.0], 1.0);

    let poly = Poly::from_slice(&[
        [-1.0, -3.0],
        [1.0, -3.0],
        [1.0, 0.0],
        [0.0, 1.0],
        [-1.0, 0.0],
    ]);

    let collided = capsule.collides_with(&poly);
    assert!(!collided);

    let transformation =
        Transformation::new([5.0, 4.0], Rotation::radians(PI / 2.0));

    let collided = circle.collides_with(&(poly, transformation));
    assert!(collided);
    let manifold = circle.manifold(&poly);
    /*
        The manifold is used for resolving collisions and has the following methods:
        manifold.count() -> i32
        manifold.depths() -> [f32; 2]
        manifold.contact_points() -> [Vec2; 2]
        manifold.normal() -> Vec2
    */

    let gjk_response = poly.gjk(&circle).run();
    /*
        The result of the GJK algorithm:
        gjk_response.distance() -> f32
        gjk_response.closest_points() -> (Vec2, Vec2)
    */
}