1 files changed, 7 insertions, 0 deletions
diff --git a/tracker-steamvr/steamvr.hpp b/tracker-steamvr/steamvr.hpp
index 9b53979e..1adb40b1 100644
--- a/tracker-steamvr/steamvr.hpp
+++ b/tracker-steamvr/steamvr.hpp
@@ -4,6 +4,8 @@
 #include "compat/util.hpp"
 #include "options/options.hpp"
 
+#include "compat/euler.hpp"
+
 #include <openvr.h>
 
 #include <atomic>
@@ -16,6 +18,8 @@
 
 using namespace options;
 
+using quat = Mat<float, 4, 1>;
+
 struct settings : opts
 {
     settings() : opts("valve-steamvr") {}
@@ -29,12 +33,15 @@ public:
     void start_tracker(QFrame *) override;
     void data(double *data) override;
 private:
+
     using error_t = vr::EVRInitError;
     using vr_t = vr::IVRSystem*;
 
     vr_t vr;
 
     settings s;
+
+    static quat get_quaternion(const vr::HmdMatrix34_t& r);
     static void vr_deleter();
     static vr_t vr_init(error_t& error);
     static QString strerror(error_t error);