Method toggle

src/core/Layers.js:67–71

* Toggles the membership of the given layer. * * @param {number} layer - The layer to toggle.

( layer )

	 * @param {number} layer - The layer to toggle.
	 */
	toggle( layer ) {

		this.mask ^= 1 << layer | 0;

	}

	/**
	 * Removes membership of the given layer.