BoxGeometry: Introduced constructor default values.

src/geometries/BoxGeometry.js

@@ -38,7 +38,7 @@ class BoxGeometry extends Geometry {
 
 class BoxBufferGeometry extends BufferGeometry {
 
-	constructor( width, height, depth, widthSegments, heightSegments, depthSegments ) {
+	constructor( width = 1, height = 1, depth = 1, widthSegments = 1, heightSegments = 1, depthSegments = 1 ) {
 
 		super();
 
@@ -55,15 +55,11 @@ class BoxBufferGeometry extends BufferGeometry {
 
 		const scope = this;
 
-		width = width || 1;
-		height = height || 1;
-		depth = depth || 1;
-
 		// segments
 
-		widthSegments = Math.floor( widthSegments ) || 1;
-		heightSegments = Math.floor( heightSegments ) || 1;
-		depthSegments = Math.floor( depthSegments ) || 1;
+		widthSegments = Math.floor( widthSegments );
+		heightSegments = Math.floor( heightSegments );
+		depthSegments = Math.floor( depthSegments );
 
 		// buffers