From 95f542365f6f1cd043c7b3090a67d269d6dde58b Mon Sep 17 00:00:00 2001
From: Stanislaw Halik <sthalik@misaki.pl>
Date: Fri, 16 Oct 2015 21:38:23 +0200
Subject: allow for filter immediate center

---
 opentrack/plugin-api.hpp | 2 ++
 1 file changed, 2 insertions(+)

(limited to 'opentrack/plugin-api.hpp')

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
-- 
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