From 6154aaddda9c911a202e4a8a2b058fe3005cfa77 Mon Sep 17 00:00:00 2001
From: SamGondelman <samuel_gondelman@brown.edu>
Date: Mon, 1 Aug 2016 16:19:03 -0700
Subject: [PATCH] try to fix linux build

---
 libraries/render-utils/src/MeshPartPayload.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libraries/render-utils/src/MeshPartPayload.cpp b/libraries/render-utils/src/MeshPartPayload.cpp
index 030b5699aa..48c1c88757 100644
--- a/libraries/render-utils/src/MeshPartPayload.cpp
+++ b/libraries/render-utils/src/MeshPartPayload.cpp
@@ -355,7 +355,7 @@ void ModelMeshPartPayload::initCache() {
 float ModelMeshPartPayload::calcFadeRatio() const {
     const float FADE_TIME = 0.5f;
     float t =  std::min(((float)(usecTimestampNow() - _fadeStartTime)) / ((float)(FADE_TIME * USECS_PER_SECOND)), 1.0f);
-    return -(cosf(M_PI_2*t) - 1.0f);
+    return -(cosf((float)M_PI_2 * t) - 1.0f);
 }
 
 void ModelMeshPartPayload::notifyLocationChanged() {