import * as three from "three-js";
import { factor } from "./factor.js";

class functional_factor extends factor {
    #animation;

    constructor(init, animation = null) {
        if (typeof (init) !== "function") {
            throw new TypeError("Init must be an function.");
        }

        if (animation !== null && typeof (animation) !== "function") {
            throw new TypeError("Animation could only be null or function.");
        }

        const mesh = init();

        if (!(mesh instanceof three.Object3D)) {
            throw new TypeError("Factor initializer must return Object3D.");
        }

        super(mesh);
        this.#animation = animation;
    }

    loop() {
        if (this.#animation !== null) {
            this.#animation(this.mesh);
        }
    }
}

export { functional_factor };