From 53ccc8128b46b65f2fb8a0975716d639485e001f Mon Sep 17 00:00:00 2001
From: CacheFlowe <cacheflowe@cacheflowe.com>
Date: Sun, 2 Feb 2014 10:54:48 -0700
Subject: [PATCH] Protect against NaN rotation values

Throws an Error if a DisplayObject's rotation was set to NaN. Without this check, Sprite's textures could disappear silently, with no reference to the improper rotation value as the culprit.
---
 src/pixi/display/DisplayObject.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/pixi/display/DisplayObject.js b/src/pixi/display/DisplayObject.js
index 938d8c5..02b2b53 100644
--- a/src/pixi/display/DisplayObject.js
+++ b/src/pixi/display/DisplayObject.js
@@ -402,6 +402,9 @@ PIXI.DisplayObject.prototype.updateTransform = function()
     // TODO OPTIMIZE THIS!! with dirty
     if(this.rotation !== this.rotationCache)
     {
+        if(isNaN(parseFloat(this.rotation)))
+            throw new Error('DisplayObject rotation values must be numeric.');
+
         this.rotationCache = this.rotation;
         this._sr =  Math.sin(this.rotation);
         this._cr =  Math.cos(this.rotation);
@@ -534,4 +537,4 @@ Object.defineProperty(PIXI.DisplayObject.prototype, 'y', {
     set: function(value) {
         this.position.y = value;
     }
-});
\ No newline at end of file
+});