3MFLoader: Added another regex condition to parser to add the root model last

Author: Jack-J-Young

examples/jsm/loaders/3MFLoader.js

@@ -132,8 +132,12 @@ class ThreeMFLoader extends Loader {
 
 					modelRelsName = file;
 
-				} else if ( file.match( /^3D\/.*\.model$/ ) ) {
+				} else if ( file.match( /^3D\/[^\/]*\.model$/ ) ) {
+					// root model
+					rootModelFile = file ;
 
+				} else if ( file.match( /^3D\/.*\/.*\.model$/ ) ) {
+					// sub models
 					modelPartNames.push( file );
 
 				} else if ( file.match( /^3D\/Textures?\/.*/ ) ) {
@@ -1468,7 +1472,7 @@ class ThreeMFLoader extends Loader {
 			const modelsData = data3mf.model;
 			const modelRels = data3mf.modelRels;
 			const objects = {};
-			const modelsKeys = Object.keys( modelsData ).reverse();
+			const modelsKeys = Object.keys( modelsData );
 			const textureData = {};
 
 			// evaluate model relationships to textures