componentWillUnmount() {
   renderer.domElement.removeEventListener('mousemove',
   this.onMouseMoveObj, false);
   renderer.domElement.removeEventListener('mousedown',
   this.onMouseDownObj, false);
renderer.domElement.removeEventListener('mouseup', this.onMouseUpObj, false);

componentWillUnmount() {
    var oldElem = renderer.domElement;
    var newElem = oldElem.cloneNode(true);
    oldElem.parentNode.replaceChild(newElem, oldElem);
}