   this._xbsjPositionUnbind = XE.MVVM.bindPosition(this, 'xbsjPosition', model1, 'xbsjPosition');
                    this._xbsjRotationUnbind = XE.MVVM.bindRotation(this, 'xbsjRotation', model1, 'xbsjRotation');

                    // 设置初始值
                    earth.terrainEffect.subSurfaceEnabled = false;
                    earth.terrainEffect.surfaceOpacity = 0.0;
                    this.positionEditing = true; // 默认状态开启位置编辑
                }

                this._earth 