docs: function AtlasNode (opts) {
      AtlasNode.superclass.constructor.call(this, opts)
  
      this.itemWidth = opts.itemWidth
      this.itemHeight = opts.itemHeight
  
      this.textureAtlas = new TextureAtlas({file: opts.file, capacity: opts.itemsToRender})
  
  
      this._calculateMaxItems()
  }