From bc0bcee05ec795ba27c699ad2b2bb2ef0a213148 Mon Sep 17 00:00:00 2001
From: Stanislaw Halik <sthalik@misaki.pl>
Date: Sun, 27 Oct 2013 02:55:05 +0200
Subject: add Accela deadzone, Patrick was right!

Signed-off-by: Stanislaw Halik <sthalik@misaki.pl>
---
 ftnoir_filter_accela/ftnoir_filter_accela.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/ftnoir_filter_accela/ftnoir_filter_accela.cpp b/ftnoir_filter_accela/ftnoir_filter_accela.cpp
index 781b3ba0..1168004f 100644
--- a/ftnoir_filter_accela/ftnoir_filter_accela.cpp
+++ b/ftnoir_filter_accela/ftnoir_filter_accela.cpp
@@ -5,6 +5,7 @@
  * copyright notice and this permission notice appear in all copies.
  */
 #include "ftnoir_filter_accela/ftnoir_filter_accela.h"
+#include <algorithm>
 #include <cmath>
 #include <QDebug>
 #include <QMutexLocker>
@@ -65,7 +66,7 @@ void FTNoIR_Filter::receiveSettings(double rot, double trans, double zoom_fac)
 static inline double parabola(const double a, const double x)
 {
     const double a1 = 1./a;
-    return a1 * pow(x, 2.025);
+    return a1 * pow(std::max<double>(x - 0.175, 1e-5), 2.2);
 }
 
 void FTNoIR_Filter::FilterHeadPoseData(const double* target_camera_position,
-- 
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