Globe Fixes (#515)

* Don't fail if tiles are not set, yet

* Remove required constructor arguments

* Remove argument requirement

* Fix dom reference

* Exit update early if camera is not present

src/three/controls/EnvironmentControls.js

@@ -83,7 +83,7 @@ export class EnvironmentControls extends EventDispatcher {
 		this.adjustHeight = true;
 
 		// internal state
-		this.pointerTracker = new PointerTracker( domElement );
+		this.pointerTracker = new PointerTracker();
 		this.needsUpdate = false;
 		this.actionHeightOffset = 0;
 
@@ -112,9 +112,9 @@ export class EnvironmentControls extends EventDispatcher {
 		this._upInitialized = false;
 
 		// init
-		this.attach( domElement );
-		this.setCamera( camera );
-		this.setScene( scene );
+		if ( domElement ) this.attach( domElement );
+		if ( camera ) this.setCamera( camera );
+		if ( scene ) this.setScene( scene );
 
 	}
 
@@ -444,6 +444,8 @@ export class EnvironmentControls extends EventDispatcher {
 
 	detach() {
 
+		this.domElement = null;
+
 		if ( this._detachCallback ) {
 
 			this._detachCallback();
@@ -493,7 +495,7 @@ export class EnvironmentControls extends EventDispatcher {
 
 	update() {
 
-		if ( ! this.enabled ) {
+		if ( ! this.enabled || ! this.camera ) {
 
 			return;
 

src/three/controls/GlobeControls.js

@@ -112,6 +112,12 @@ export class GlobeControls extends EnvironmentControls {
 
 	update() {
 
+		if ( ! this.tilesGroup || ! this.camera ) {
+
+			return;
+
+		}
+
 		super.update();
 
 		const {

src/three/controls/PointerTracker.js

@@ -2,9 +2,9 @@ import { Vector2 } from 'three';
 
 export class PointerTracker {
 
-	constructor( domElement ) {
+	constructor() {
 
-		this.domElement = domElement;
+		this.domElement = null;
 		this.buttons = 0;
 		this.pointerType = null;
 		this.pointerOrder = [];