VRMLLoader: Make normal computation more robuste.

examples/js/loaders/VRMLLoader.js

@@ -1228,7 +1228,7 @@ THREE.VRMLLoader = ( function () {
 			function buildIndexedFaceSetNode( node ) {
 
 				var color, coord, normal, texCoord;
-				var ccw = true, solid = true, creaseAngle;
+				var ccw = true, solid = true, creaseAngle = 0;
 				var colorIndex, coordIndex, normalIndex, texCoordIndex;
 				var colorPerVertex = true, normalPerVertex = true;
 
@@ -2161,7 +2161,13 @@ THREE.VRMLLoader = ( function () {
 
 			function weightedNormal( normals, vector, creaseAngle ) {
 
-				var normal = vector.clone();
+				var normal = new THREE.Vector3();
+
+				if ( creaseAngle === 0 ) {
+
+					normal.copy( vector );
+
+				} else {
 
 					for ( var i = 0, l = normals.length; i < l; i ++ ) {
 
@@ -2173,6 +2179,8 @@ THREE.VRMLLoader = ( function () {
 
 					}
 
+				}
+
 				return normal.normalize();
 
 			}

examples/jsm/loaders/VRMLLoader.js

@@ -1262,7 +1262,7 @@ var VRMLLoader = ( function () {
 			function buildIndexedFaceSetNode( node ) {
 
 				var color, coord, normal, texCoord;
-				var ccw = true, solid = true, creaseAngle;
+				var ccw = true, solid = true, creaseAngle = 0;
 				var colorIndex, coordIndex, normalIndex, texCoordIndex;
 				var colorPerVertex = true, normalPerVertex = true;
 
@@ -2195,7 +2195,13 @@ var VRMLLoader = ( function () {
 
 			function weightedNormal( normals, vector, creaseAngle ) {
 
-				var normal = vector.clone();
+				var normal = new Vector3();
+
+				if ( creaseAngle === 0 ) {
+
+					normal.copy( vector );
+
+				} else {
 
 					for ( var i = 0, l = normals.length; i < l; i ++ ) {
 
@@ -2207,6 +2213,8 @@ var VRMLLoader = ( function () {
 
 					}
 
+				}
+
 				return normal.normalize();
 
 			}