@woosh/meep-engine/src/core/math/interval/intersects1D.js

Pure JavaScript game engine. Fully featured and production ready.

import { assert } from "../../assert.js";

/**
 * Returns true if two 1D lines intersect, touch is treated as intersection
 * Parameters are assumed to be ordered, a1 >= a0, b1 >= b0
 * @param {Number} a0
 * @param {Number} a1
 * @param {Number} b0
 * @param {Number} b1
 * @returns {boolean}
 */
export function intersects1D(a0, a1, b0, b1) {
    assert.isNumber(a0, "a0");
    assert.isNumber(a1, "a1");
    assert.isNumber(b0, "b0");
    assert.isNumber(b1, "b1");

    return a1 >= b0 && b1 >= a0;
}