From 8743685a9556f13dbfdb7028f885ab844ce3b891 Mon Sep 17 00:00:00 2001
From: 06wj <06wj@163.com>
Date: Wed, 7 Jun 2017 20:44:33 +0800
Subject: [PATCH] Optimize Ray.applyMatrix4 performance

---
 src/math/Ray.js | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/src/math/Ray.js b/src/math/Ray.js
index 988465c777c72c..068704f5f96058 100644
--- a/src/math/Ray.js
+++ b/src/math/Ray.js
@@ -515,10 +515,8 @@ Object.assign( Ray.prototype, {
 
 	applyMatrix4: function ( matrix4 ) {
 
-		this.direction.add( this.origin ).applyMatrix4( matrix4 );
 		this.origin.applyMatrix4( matrix4 );
-		this.direction.sub( this.origin );
-		this.direction.normalize();
+		this.direction.transformDirection( matrix4 );
 
 		return this;