updateBoundingBox(x, y, ctx, selected, hover) {
    this._updateBoundingBox(x, y, ctx, selected, hover);
  }
Default implementation of this method call.
This acts as a stub which can be overridden.
@param {number} x width
@param {number} y height
@param {CanvasRenderingContext2D} ctx
@param {boolean} selected
@param {boolean} hover