                   let realVal = parseFloat(value).toFixed(2)
                    return realVal
                }
            },
            // 1.2 资源销毁
            beforeDestroy() {
                // vue程序销毁时，需要清理相关资源
                this._earth = this._earth && this._earth.destroy();
                this._model = this._model && this._model.destroy();
                this._rotationEditingUnbind = this._rotationEditingUnbind && this._rotationEditingUnbind();
           