allow for filter immediate center

2 files changed, 4 insertions, 0 deletions

diff --git a/opentrack/plugin-api.hpp b/opentrack/plugin-api.hpp
index 732dbb3d..a57077ab 100644
--- a/opentrack/plugin-api.hpp
+++ b/opentrack/plugin-api.hpp
@@ -61,6 +61,8 @@ struct IFilter
     // perform filtering step.
     // you have to take care of dt on your own, try "opentrack-compat/timer.hpp"
     virtual void filter(const double *input, double *output) = 0;
+    // optionally reset the filter when centering
+    virtual void center() {}
 };
 
 struct IFilterDialog : public BaseDialog
diff --git a/opentrack/tracker.cpp b/opentrack/tracker.cpp
index 8fd054b4..a9e60555 100644
--- a/opentrack/tracker.cpp
+++ b/opentrack/tracker.cpp
@@ -114,6 +114,8 @@ void Tracker::logic()
     
     if (can_center)
     {
+        if (libs.pFilter)
+            libs.pFilter->center();
         centerp = false;
         for (int i = 0; i < 3; i++)
             t_b[i] = t(i);