Merge pull request #21207 from takahirox/GLTFLoaderAddHooks

GLTFLoader: Add before/afterRoot hookpoints

examples/js/loaders/GLTFLoader.js

@@ -1898,13 +1898,21 @@ THREE.GLTFLoader = ( function () {
 
 		} );
 
-		Promise.all( [
+		Promise.all( this._invokeAll( function ( ext ) {
 
-			this.getDependencies( 'scene' ),
-			this.getDependencies( 'animation' ),
-			this.getDependencies( 'camera' ),
+			return ext.beforeRoot && ext.beforeRoot();
 
-		] ).then( function ( dependencies ) {
+		} ) ).then( function () {
+
+			return Promise.all( [
+
+				parser.getDependencies( 'scene' ),
+				parser.getDependencies( 'animation' ),
+				parser.getDependencies( 'camera' ),
+
+			] );
+
+		} ).then( function ( dependencies ) {
 
 			var result = {
 				scene: dependencies[ 0 ][ json.scene || 0 ],
@@ -1920,7 +1928,15 @@ THREE.GLTFLoader = ( function () {
 
 			assignExtrasToUserData( result, json );
 
-			onLoad( result );
+			Promise.all( parser._invokeAll( function ( ext ) {
+
+				return ext.afterRoot && ext.afterRoot( result );
+
+			} ) ).then( function () {
+
+				onLoad( result );
+
+			} );
 
 		} ).catch( onError );
 

examples/jsm/loaders/GLTFLoader.js

@@ -1963,13 +1963,21 @@ var GLTFLoader = ( function () {
 
 		} );
 
-		Promise.all( [
+		Promise.all( this._invokeAll( function ( ext ) {
 
-			this.getDependencies( 'scene' ),
-			this.getDependencies( 'animation' ),
-			this.getDependencies( 'camera' ),
+			return ext.beforeRoot && ext.beforeRoot();
 
-		] ).then( function ( dependencies ) {
+		} ) ).then( function () {
+
+			return Promise.all( [
+
+				parser.getDependencies( 'scene' ),
+				parser.getDependencies( 'animation' ),
+				parser.getDependencies( 'camera' ),
+
+			] );
+
+		} ).then( function ( dependencies ) {
 
 			var result = {
 				scene: dependencies[ 0 ][ json.scene || 0 ],
@@ -1985,7 +1993,15 @@ var GLTFLoader = ( function () {
 
 			assignExtrasToUserData( result, json );
 
-			onLoad( result );
+			Promise.all( parser._invokeAll( function ( ext ) {
+
+				return ext.afterRoot && ext.afterRoot( result );
+
+			} ) ).then( function () {
+
+				onLoad( result );
+
+			} );
 
 		} ).catch( onError );