BoxHelper: Align update method

docs/api/helpers/BoxHelper.html

@@ -54,10 +54,10 @@
 		<h2>Methods</h2>
 		<div>See the base [page:LineSegments] class for common methods.</div>
 
-		<h3>[method:null update]( [page:Object3D object] )</h3>
+		<h3>[method:null update]()</h3>
 		<div>
 			Updates the helper's geometry to match the dimensions of the
-		 	of the passed object, including any children. See [page:Box3.setFromObject].
+		 	of the object, including any children. See [page:Box3.setFromObject].
 		</div>
 
 		<h2>Source</h2>

src/helpers/BoxHelper.js

@@ -6,10 +6,13 @@ import { BufferGeometry } from '../core/BufferGeometry';
 
 /**
  * @author mrdoob / http://mrdoob.com/
+ * @author Mugen87 / http://github.com/Mugen87
  */
 
 function BoxHelper( object, color ) {
 
+	this.object = object;
+
 	if ( color === undefined ) color = 0xffff00;
 
 	var indices = new Uint16Array( [ 0, 1, 1, 2, 2, 3, 3, 0, 4, 5, 5, 6, 6, 7, 7, 4, 0, 4, 1, 5, 2, 6, 3, 7 ] );
@@ -21,11 +24,9 @@ function BoxHelper( object, color ) {
 
 	LineSegments.call( this, geometry, new LineBasicMaterial( { color: color } ) );
 
-	if ( object !== undefined ) {
-
-		this.update( object );
+	this.matrixAutoUpdate = false;
 
-	}
+	this.update();
 
 }
 
@@ -38,15 +39,15 @@ BoxHelper.prototype.update = ( function () {
 
 	return function update( object ) {
 
-		if ( object && object.isBox3 ) {
+		if ( object !== undefined ) {
 
-			box.copy( object );
+			console.warn( 'THREE.BoxHelper: .update() has no longer arguments.' );
 
-		} else {
+		}
 
-			box.setFromObject( object );
+		this.object.updateMatrixWorld( true );
 
-		}
+		box.setFromObject( this.object );
 
 		if ( box.isEmpty() ) return;
 
@@ -83,7 +84,7 @@ BoxHelper.prototype.update = ( function () {
 
 		position.needsUpdate = true;
 
-		this.geometry.computeBoundingSphere();
+		return this;
 
 	};