From 9595b7aae5beb49d7d23c835567c8b43e146c562 Mon Sep 17 00:00:00 2001
From: Asha <ashnb@qq.com>
Date: Thu, 13 Apr 2017 15:39:02 +0800
Subject: [PATCH] cardboard motion bug fix.

---
 .../com/google/vrtoolkit/cardboard/sensors/HeadTracker.java     | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/vrlib/src/main/java/com/google/vrtoolkit/cardboard/sensors/HeadTracker.java b/vrlib/src/main/java/com/google/vrtoolkit/cardboard/sensors/HeadTracker.java
index 1bffef2f..276b58d7 100644
--- a/vrlib/src/main/java/com/google/vrtoolkit/cardboard/sensors/HeadTracker.java
+++ b/vrlib/src/main/java/com/google/vrtoolkit/cardboard/sensors/HeadTracker.java
@@ -29,7 +29,7 @@ public class HeadTracker implements SensorEventListener {
     private final Display display;
     private final float[] ekfToHeadTracker = new float[16];
     private final float[] sensorToDisplay = new float[16];
-    private float displayRotation = 0.0F;
+    private float displayRotation = -1.0F;
     private final float[] neckModelTranslation = new float[16];
     private final float[] tmpHeadView = new float[16];
     private final float[] tmpHeadView2 = new float[16];