From fa626aa8557021b18ed321577f2abc265df08f2a Mon Sep 17 00:00:00 2001
From: David Jordan <jordand95@gmail.com>
Date: Thu, 16 Apr 2015 18:01:24 -0400
Subject: [PATCH] Added NaN check when outputting normals in PLY exporter, to
 avoid outputting '-1.#IND'

---
 code/PlyExporter.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/code/PlyExporter.cpp b/code/PlyExporter.cpp
index 692b02668..a1479ee32 100644
--- a/code/PlyExporter.cpp
+++ b/code/PlyExporter.cpp
@@ -216,7 +216,7 @@ void PlyExporter::WriteMeshVerts(const aiMesh* m, unsigned int components)
 			m->mVertices[i].z
 		;
 		if(components & PLY_EXPORT_HAS_NORMALS) {
-			if (m->HasNormals()) {
+			if (m->HasNormals() && is_not_qnan(m->mNormals[i].x)) {
 				mOutput << 
 				" " << m->mNormals[i].x << 
 				" " << m->mNormals[i].y <<