hopefully work around tracker thread freeze on exit (issue #18)

Reported-by: @chsims1
Signed-off-by: Stanislaw Halik <sthalik@misaki.pl>

1 files changed, 5 insertions, 4 deletions

diff --git a/facetracknoir/tracker.h b/facetracknoir/tracker.h
index 7ebece02..a33d8e0d 100644
--- a/facetracknoir/tracker.h
+++ b/facetracknoir/tracker.h
@@ -51,28 +51,29 @@ public:
     axis_opts& opts;
 };
 
-class Tracker : public QThread {
+class Tracker : protected QThread {
 	Q_OBJECT
 
 private:
     FaceTrackNoIR *mainApp;
     QMutex mtx;
     main_settings& s;
-
+    volatile bool should_quit;
 protected:
 	void run();
 
 public:
     Tracker( FaceTrackNoIR *parent, main_settings& s);
+    ~Tracker();
 
     void getHeadPose(double *data);
     void getOutputHeadPose(double *data);
-
-    volatile bool should_quit;
     volatile bool do_center;
     volatile bool enabled;
     
     T6DOF output_camera;
+
+    void start() { QThread::start(); }
 };
 
 class HeadPoseData {