hotfix for camera bug

src/ACGL/Scene/HMDCamera.cc

@@ -35,7 +35,8 @@ void HMDCamera::setNeckToEyeHorizontalDistance( float _f )
 
 void HMDCamera::setHMDRotation( const glm::mat3 &_rotation )
 {
-    mHMDRotation = glm::mat4( _rotation );
+    //mHMDRotation = glm::mat4( _rotation );
+    GenericCamera::setRotationMatrix( _rotation );
 }