Merge pull request #6753 from qwertzui11/dev

implemented serialization for THREE.LOD

src/loaders/ObjectLoader.js

@@ -556,6 +556,12 @@ THREE.ObjectLoader.prototype = {
 
 					break;
 
+				case 'LOD':
+
+					object = new THREE.LOD();
+
+					break;
+
 				case 'Line':
 
 					object = new THREE.Line( getGeometry( data.geometry ), getMaterial( data.material ), data.mode );
@@ -618,6 +624,31 @@ THREE.ObjectLoader.prototype = {
 
 			}
 
+			if ( data.type === 'LOD' ) {
+
+				for ( var l = 0; l < data.levels.length; l ++ ) {
+
+					var level = data.levels[l];
+
+					for ( var c = 0; c < object.children.length; c ++ ) {
+
+						var child = object.children[c];
+
+						if ( child.uuid === level.object ) {
+
+							object.levels.push({
+								distance: level.distance,
+								object: child
+							});
+
+						}
+
+					}
+
+				}
+
+			}
+
 			return object;
 
 		}

src/objects/LOD.js

@@ -8,6 +8,8 @@ THREE.LOD = function () {
 
 	THREE.Object3D.call( this );
 
+	this.type = 'LOD';
+
 	Object.defineProperties( this, {
 		levels: {
 			enumerable: true,
@@ -149,3 +151,26 @@ THREE.LOD.prototype.copy = function ( source ) {
 	return this;
 
 };
+
+THREE.LOD.prototype.toJSON = function ( meta ) {
+
+	var data = THREE.Object3D.prototype.toJSON.call( this, meta );
+
+	data.object.levels = [];
+
+	var levels = this.levels;
+
+	for ( var i = 0, l = levels.length; i < l; i ++ ) {
+
+		var level = levels[ i ];
+
+		data.object.levels.push({
+			distance: level.distance,
+			object: level.object.uuid
+		});
+
+	}
+
+	return data;
+
+};