/**
 * Represents a background.
 * @class Background
 * @extends jibo.face.AbstractLayer
 * @memberof jibo.face
 * @param {Boolean} cache Cache the texture.
 */

    /**
     * The base sprite for holding the texture.
     * @name jibo.face.Background#sprite
     * @type {PIXI.Sprite}
     */

    /**
     * Default eye texture when nothing is set.
     * @method jibo.face.Background#init
     * @param {PIXI.Texture} texture The default texture to use
     */

    /**
     * Update of DOFValues.
     * @method jibo.face.Background#display
     * @param {Array<Number>} timestamp Timestamp when update is called.
     * @param {jibo.face.DOFValues} dofValues Update display according to these values.
     */

    /**
     * Override destroy
     * @method jibo.face.Background#destroy
     * @override
     */

    /**
     * Set current eye texture.
     * @method jibo.face.Background#setTexture
     * @protected
     * @param {PIXI.Texture} texture Texture to set
     */