Hamilton documentation and minor fixes (#1667)

* Minor corrections to alpha calculation and some comments to help it make sense
* Added some explanatory text to the hamilton filter dialog and changed the layout

7 files changed, 772 insertions, 872 deletions

diff --git a/filter-hamilton/ftnoir_filter_hamilton.cpp b/filter-hamilton/ftnoir_filter_hamilton.cpp
index be3faa7f..7bbc91de 100644
--- a/filter-hamilton/ftnoir_filter_hamilton.cpp
+++ b/filter-hamilton/ftnoir_filter_hamilton.cpp
@@ -34,11 +34,15 @@ void hamilton::filter(const double *input, double *output)
     double dist	 = VectorDistance( &input[TX], pos_last);
 
     double alpha = (dist - pos_deadzone) / (pos_max + pos_deadzone + EPSILON);
-    alpha = fmin(alpha, 1.0);
-    alpha = fmax(alpha, 0.0);
-    alpha = pow (alpha, pos_pow);
-    alpha = alpha * (dist - pos_deadzone) / (dist + EPSILON);
-		
+    alpha = std::min(1.0, std::max(0.0, alpha));
+    if (alpha > 0.0)
+        alpha = pow(alpha, pos_pow);
+    // Scale alpha so that alpha * dist <= dist - pos_deadzone. This ensures that
+    // the center of the deadzone will never move closer to the input position than
+    // distance dist. And this ensures that the view never jumps ahead of head
+    // movements.
+    alpha *= (dist - pos_deadzone) / (dist + EPSILON);
+
     pos_last = Lerp(pos_last, input, alpha);
 
     output[TX] = pos_last.v[0]; 
@@ -48,11 +52,11 @@ void hamilton::filter(const double *input, double *output)
     // zoom smoothing:
     const double pow_zoom {s.kPowZoom};		
     const double max_z    {s.kMaxZ};
-		double rot_zoom = pow_zoom; 
+    double rot_zoom = pow_zoom;
 
     if (output[TZ] > 0) rot_zoom = 0;
-		else rot_zoom *= -output[TZ] / (max_z + EPSILON);
-		rot_zoom = fmin( rot_zoom, pow_zoom ); 
+    else rot_zoom *= -output[TZ] / (max_z + EPSILON);
+    rot_zoom = fmin( rot_zoom, pow_zoom );
 
     // rotations:
     const double rot_max     {s.kMaxRot};
@@ -62,10 +66,11 @@ void hamilton::filter(const double *input, double *output)
     double angle = AngleBetween(quat_input, quat_last);
 
     alpha = (angle - rot_deadzone) / (rot_max + rot_deadzone + EPSILON);
-    alpha = fmin(alpha, 1.0);
-    alpha = fmax(alpha, 0.0);
-    alpha = pow (alpha, rot_pow + rot_zoom);
-    alpha = alpha * (angle - rot_deadzone) / (angle + EPSILON);
+    alpha = std::min(1.0, std::max(0.0, alpha));
+    if (alpha > 0.0)
+        alpha = pow(alpha, rot_pow + rot_zoom);
+    // see comment in earlier alpha calculation above
+    alpha *= (angle - rot_deadzone) / (angle + EPSILON);
 
     quat_last = Slerp(quat_last, quat_input, alpha);
 
diff --git a/filter-hamilton/ftnoir_filter_hamilton.h b/filter-hamilton/ftnoir_filter_hamilton.h
index 0756c216..b724d973 100644
--- a/filter-hamilton/ftnoir_filter_hamilton.h
+++ b/filter-hamilton/ftnoir_filter_hamilton.h
@@ -43,7 +43,7 @@ public:
     module_status initialize() override { return status_ok(); }
 private:
     tQuat   quat_last;
-		tVector pos_last;
+    tVector pos_last;
     settings s;
     bool first_run = true;
 };
diff --git a/filter-hamilton/ftnoir_hamilton_filtercontrols.ui b/filter-hamilton/ftnoir_hamilton_filtercontrols.ui
index 71cdb6da..4c8b1536 100644
--- a/filter-hamilton/ftnoir_hamilton_filtercontrols.ui
+++ b/filter-hamilton/ftnoir_hamilton_filtercontrols.ui
@@ -13,7 +13,7 @@
     <x>0</x>
     <y>0</y>
     <width>514</width>
-    <height>491</height>
+    <height>563</height>
    </rect>
   </property>
   <property name="sizePolicy">
@@ -50,8 +50,8 @@
   <property name="styleSheet">
    <string notr="true"/>
   </property>
-  <layout class="QVBoxLayout" name="verticalLayout">
-   <item>
+  <layout class="QGridLayout" name="gridLayout_2">
+   <item row="2" column="0">
     <widget class="QGroupBox" name="groupBox">
      <property name="sizePolicy">
       <sizepolicy hsizetype="Preferred" vsizetype="Fixed">
@@ -65,322 +65,286 @@
        <height>150</height>
       </size>
      </property>
-     <property name="font">
-      <font>
-       <pointsize>8</pointsize>
-       <weight>50</weight>
-       <bold>false</bold>
-      </font>
-     </property>
      <property name="title">
       <string>Rotations: </string>
      </property>
      <property name="flat">
       <bool>false</bool>
      </property>
-     <widget class="QSlider" name="maxRot">
-      <property name="geometry">
-       <rect>
-        <x>103</x>
-        <y>30</y>
-        <width>311</width>
-        <height>20</height>
-       </rect>
-      </property>
-      <property name="sizePolicy">
-       <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
-        <horstretch>0</horstretch>
-        <verstretch>0</verstretch>
-       </sizepolicy>
-      </property>
-      <property name="focusPolicy">
-       <enum>Qt::StrongFocus</enum>
-      </property>
-      <property name="minimum">
-       <number>0</number>
-      </property>
-      <property name="maximum">
-       <number>250</number>
-      </property>
-      <property name="singleStep">
-       <number>1</number>
-      </property>
-      <property name="pageStep">
-       <number>50</number>
-      </property>
-      <property name="value">
-       <number>100</number>
-      </property>
-      <property name="orientation">
-       <enum>Qt::Horizontal</enum>
-      </property>
-      <property name="tickPosition">
-       <enum>QSlider::TicksBothSides</enum>
-      </property>
-      <property name="tickInterval">
-       <number>50</number>
-      </property>
-     </widget>
-     <widget class="QLabel" name="lbRmax">
-      <property name="geometry">
-       <rect>
-        <x>7</x>
-        <y>30</y>
-        <width>91</width>
-        <height>20</height>
-       </rect>
-      </property>
-      <property name="sizePolicy">
-       <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
-        <horstretch>0</horstretch>
-        <verstretch>0</verstretch>
-       </sizepolicy>
-      </property>
-      <property name="minimumSize">
-       <size>
-        <width>0</width>
-        <height>0</height>
-       </size>
-      </property>
-      <property name="styleSheet">
-       <string notr="true"/>
-      </property>
-      <property name="text">
-       <string> Max distance:</string>
-      </property>
-      <property name="alignment">
-       <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
-      </property>
-     </widget>
-     <widget class="QLabel" name="lbMaxRot">
-      <property name="geometry">
-       <rect>
-        <x>424</x>
-        <y>30</y>
-        <width>61</width>
-        <height>20</height>
-       </rect>
-      </property>
-      <property name="minimumSize">
-       <size>
-        <width>45</width>
-        <height>0</height>
-       </size>
-      </property>
-      <property name="toolTip">
-       <string notr="true"/>
-      </property>
-      <property name="text">
-       <string>10,00</string>
-      </property>
-      <property name="alignment">
-       <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
-      </property>
-     </widget>
-     <widget class="QLabel" name="lbRdz">
-      <property name="geometry">
-       <rect>
-        <x>7</x>
-        <y>110</y>
-        <width>91</width>
-        <height>20</height>
-       </rect>
-      </property>
-      <property name="sizePolicy">
-       <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
-        <horstretch>0</horstretch>
-        <verstretch>0</verstretch>
-       </sizepolicy>
-      </property>
-      <property name="minimumSize">
-       <size>
-        <width>0</width>
-        <height>0</height>
-       </size>
-      </property>
-      <property name="styleSheet">
-       <string notr="true"/>
-      </property>
-      <property name="text">
-       <string> Dead Zone:</string>
-      </property>
-      <property name="alignment">
-       <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
-      </property>
-     </widget>
-     <widget class="QSlider" name="dzRot">
-      <property name="geometry">
-       <rect>
-        <x>103</x>
-        <y>110</y>
-        <width>311</width>
-        <height>20</height>
-       </rect>
-      </property>
-      <property name="sizePolicy">
-       <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
-        <horstretch>0</horstretch>
-        <verstretch>0</verstretch>
-       </sizepolicy>
-      </property>
-      <property name="focusPolicy">
-       <enum>Qt::StrongFocus</enum>
-      </property>
-      <property name="minimum">
-       <number>0</number>
-      </property>
-      <property name="maximum">
-       <number>50</number>
-      </property>
-      <property name="singleStep">
-       <number>1</number>
-      </property>
-      <property name="pageStep">
-       <number>5</number>
-      </property>
-      <property name="value">
-       <number>1</number>
-      </property>
-      <property name="orientation">
-       <enum>Qt::Horizontal</enum>
-      </property>
-      <property name="tickPosition">
-       <enum>QSlider::TicksBothSides</enum>
-      </property>
-      <property name="tickInterval">
-       <number>10</number>
-      </property>
-     </widget>
-     <widget class="QLabel" name="lbDZRot">
-      <property name="geometry">
-       <rect>
-        <x>424</x>
-        <y>110</y>
-        <width>61</width>
-        <height>20</height>
-       </rect>
-      </property>
-      <property name="minimumSize">
-       <size>
-        <width>45</width>
-        <height>0</height>
-       </size>
-      </property>
-      <property name="toolTip">
-       <string notr="true"/>
-      </property>
-      <property name="text">
-       <string>0,01</string>
-      </property>
-      <property name="alignment">
-       <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
-      </property>
-     </widget>
-     <widget class="QSlider" name="powRot">
-      <property name="geometry">
-       <rect>
-        <x>103</x>
-        <y>70</y>
-        <width>311</width>
-        <height>20</height>
-       </rect>
-      </property>
-      <property name="sizePolicy">
-       <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
-        <horstretch>0</horstretch>
-        <verstretch>0</verstretch>
-       </sizepolicy>
-      </property>
-      <property name="focusPolicy">
-       <enum>Qt::StrongFocus</enum>
-      </property>
-      <property name="autoFillBackground">
-       <bool>false</bool>
-      </property>
-      <property name="minimum">
-       <number>0</number>
-      </property>
-      <property name="maximum">
-       <number>400</number>
-      </property>
-      <property name="singleStep">
-       <number>1</number>
-      </property>
-      <property name="pageStep">
-       <number>50</number>
-      </property>
-      <property name="value">
-       <number>200</number>
-      </property>
-      <property name="orientation">
-       <enum>Qt::Horizontal</enum>
-      </property>
-      <property name="tickPosition">
-       <enum>QSlider::TicksBothSides</enum>
-      </property>
-      <property name="tickInterval">
-       <number>100</number>
-      </property>
-     </widget>
-     <widget class="QLabel" name="lbPowRot">
-      <property name="geometry">
-       <rect>
-        <x>430</x>
-        <y>70</y>
-        <width>45</width>
-        <height>20</height>
-       </rect>
-      </property>
-      <property name="minimumSize">
-       <size>
-        <width>45</width>
-        <height>0</height>
-       </size>
-      </property>
-      <property name="toolTip">
-       <string notr="true"/>
-      </property>
-      <property name="text">
-       <string>2,00</string>
-      </property>
-      <property name="alignment">
-       <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
-      </property>
-     </widget>
-     <widget class="QLabel" name="lbRpow">
-      <property name="geometry">
-       <rect>
-        <x>7</x>
-        <y>70</y>
-        <width>91</width>
-        <height>20</height>
-       </rect>
-      </property>
-      <property name="sizePolicy">
-       <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
-        <horstretch>0</horstretch>
-        <verstretch>0</verstretch>
-       </sizepolicy>
-      </property>
-      <property name="minimumSize">
-       <size>
-        <width>0</width>
-        <height>0</height>
-       </size>
-      </property>
-      <property name="styleSheet">
-       <string notr="true"/>
-      </property>
-      <property name="text">
-       <string> Smoothing:</string>
-      </property>
-      <property name="alignment">
-       <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
-      </property>
-     </widget>
+     <layout class="QGridLayout" name="gridLayout">
+      <item row="8" column="2">
+       <widget class="QSlider" name="powRot">
+        <property name="sizePolicy">
+         <sizepolicy hsizetype="Expanding" vsizetype="Fixed">
+          <horstretch>0</horstretch>
+          <verstretch>0</verstretch>
+         </sizepolicy>
+        </property>
+        <property name="focusPolicy">
+         <enum>Qt::StrongFocus</enum>
+        </property>
+        <property name="autoFillBackground">
+         <bool>false</bool>
+        </property>
+        <property name="minimum">
+         <number>0</number>
+        </property>
+        <property name="maximum">
+         <number>400</number>
+        </property>
+        <property name="singleStep">
+         <number>1</number>
+        </property>
+        <property name="pageStep">
+         <number>50</number>
+        </property>
+        <property name="value">
+         <number>200</number>
+        </property>
+        <property name="orientation">
+         <enum>Qt::Horizontal</enum>
+        </property>
+        <property name="tickPosition">
+         <enum>QSlider::TicksBothSides</enum>
+        </property>
+        <property name="tickInterval">
+         <number>100</number>
+        </property>
+       </widget>
+      </item>
+      <item row="8" column="3">
+       <widget class="QLabel" name="lbPowRot">
+        <property name="minimumSize">
+         <size>
+          <width>45</width>
+          <height>0</height>
+         </size>
+        </property>
+        <property name="toolTip">
+         <string notr="true"/>
+        </property>
+        <property name="text">
+         <string>2,00</string>
+        </property>
+        <property name="alignment">
+         <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+        </property>
+       </widget>
+      </item>
+      <item row="6" column="2">
+       <widget class="QSlider" name="dzRot">
+        <property name="sizePolicy">
+         <sizepolicy hsizetype="Expanding" vsizetype="Fixed">
+          <horstretch>0</horstretch>
+          <verstretch>0</verstretch>
+         </sizepolicy>
+        </property>
+        <property name="focusPolicy">
+         <enum>Qt::StrongFocus</enum>
+        </property>
+        <property name="minimum">
+         <number>0</number>
+        </property>
+        <property name="maximum">
+         <number>50</number>
+        </property>
+        <property name="singleStep">
+         <number>1</number>
+        </property>
+        <property name="pageStep">
+         <number>5</number>
+        </property>
+        <property name="value">
+         <number>1</number>
+        </property>
+        <property name="orientation">
+         <enum>Qt::Horizontal</enum>
+        </property>
+        <property name="tickPosition">
+         <enum>QSlider::TicksBothSides</enum>
+        </property>
+        <property name="tickInterval">
+         <number>10</number>
+        </property>
+       </widget>
+      </item>
+      <item row="8" column="0">
+       <widget class="QLabel" name="lbRpow">
+        <property name="sizePolicy">
+         <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
+          <horstretch>0</horstretch>
+          <verstretch>0</verstretch>
+         </sizepolicy>
+        </property>
+        <property name="minimumSize">
+         <size>
+          <width>0</width>
+          <height>0</height>
+         </size>
+        </property>
+        <property name="styleSheet">
+         <string notr="true"/>
+        </property>
+        <property name="text">
+         <string>Smoothing power:</string>
+        </property>
+        <property name="alignment">
+         <set>Qt::AlignLeading|Qt::AlignLeft|Qt::AlignVCenter</set>
+        </property>
+       </widget>
+      </item>
+      <item row="6" column="0">
+       <widget class="QLabel" name="lbRdz">
+        <property name="sizePolicy">
+         <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
+          <horstretch>0</horstretch>
+          <verstretch>0</verstretch>
+         </sizepolicy>
+        </property>
+        <property name="minimumSize">
+         <size>
+          <width>0</width>
+          <height>0</height>
+         </size>
+        </property>
+        <property name="styleSheet">
+         <string notr="true"/>
+        </property>
+        <property name="text">
+         <string>Dead Zone:</string>
+        </property>
+        <property name="alignment">
+         <set>Qt::AlignLeading|Qt::AlignLeft|Qt::AlignVCenter</set>
+        </property>
+       </widget>
+      </item>
+      <item row="6" column="3">
+       <widget class="QLabel" name="lbDZRot">
+        <property name="minimumSize">
+         <size>
+          <width>45</width>
+          <height>0</height>
+         </size>
+        </property>
+        <property name="toolTip">
+         <string notr="true"/>
+        </property>
+        <property name="text">
+         <string>0,01</string>
+        </property>
+        <property name="alignment">
+         <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+        </property>
+       </widget>
+      </item>
+      <item row="7" column="0">
+       <widget class="QLabel" name="lbRmax">
+        <property name="text">
+         <string>Max distance:</string>
+        </property>
+       </widget>
+      </item>
+      <item row="7" column="2">
+       <widget class="QSlider" name="maxRot">
+        <property name="sizePolicy">
+         <sizepolicy hsizetype="Expanding" vsizetype="Fixed">
+          <horstretch>0</horstretch>
+          <verstretch>0</verstretch>
+         </sizepolicy>
+        </property>
+        <property name="focusPolicy">
+         <enum>Qt::StrongFocus</enum>
+        </property>
+        <property name="minimum">
+         <number>0</number>
+        </property>
+        <property name="maximum">
+         <number>250</number>
+        </property>
+        <property name="singleStep">
+         <number>1</number>
+        </property>
+        <property name="pageStep">
+         <number>50</number>
+        </property>
+        <property name="value">
+         <number>100</number>
+        </property>
+        <property name="orientation">
+         <enum>Qt::Horizontal</enum>
+        </property>
+        <property name="tickPosition">
+         <enum>QSlider::TicksBothSides</enum>
+        </property>
+        <property name="tickInterval">
+         <number>50</number>
+        </property>
+       </widget>
+      </item>
+      <item row="7" column="3">
+       <widget class="QLabel" name="lbMaxRot">
+        <property name="minimumSize">
+         <size>
+          <width>45</width>
+          <height>0</height>
+         </size>
+        </property>
+        <property name="toolTip">
+         <string notr="true"/>
+        </property>
+        <property name="text">
+         <string>10,00</string>
+        </property>
+        <property name="alignment">
+         <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+        </property>
+       </widget>
+      </item>
+     </layout>
+    </widget>
+   </item>
+   <item row="6" column="0">
+    <widget class="QDialogButtonBox" name="buttonBox">
+     <property name="sizePolicy">
+      <sizepolicy hsizetype="Expanding" vsizetype="Fixed">
+       <horstretch>0</horstretch>
+       <verstretch>0</verstretch>
+      </sizepolicy>
+     </property>
+     <property name="layoutDirection">
+      <enum>Qt::LeftToRight</enum>
+     </property>
+     <property name="standardButtons">
+      <set>QDialogButtonBox::Cancel|QDialogButtonBox::Ok</set>
+     </property>
+     <property name="centerButtons">
+      <bool>true</bool>
+     </property>
     </widget>
    </item>
-   <item>
+   <item row="0" column="0">
+    <widget class="QLabel" name="label">
+     <property name="sizePolicy">
+      <sizepolicy hsizetype="Preferred" vsizetype="Preferred">
+       <horstretch>0</horstretch>
+       <verstretch>0</verstretch>
+      </sizepolicy>
+     </property>
+     <property name="minimumSize">
+      <size>
+       <width>0</width>
+       <height>0</height>
+      </size>
+     </property>
+     <property name="text">
+      <string>For both rotations and positions: No movement occurs within the dead zone. Smoothing scales down to minimum at max distance + 2 x dead zone.</string>
+     </property>
+     <property name="wordWrap">
+      <bool>true</bool>
+     </property>
+    </widget>
+   </item>
+   <item row="3" column="0">
     <widget class="QGroupBox" name="groupBox_2">
      <property name="sizePolicy">
       <sizepolicy hsizetype="Preferred" vsizetype="Fixed">
@@ -397,300 +361,248 @@
      <property name="title">
       <string>Positions: </string>
      </property>
-     <widget class="QSlider" name="maxDist">
-      <property name="geometry">
-       <rect>
-        <x>103</x>
-        <y>30</y>
-        <width>311</width>
-        <height>20</height>
-       </rect>
-      </property>
-      <property name="sizePolicy">
-       <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
-        <horstretch>0</horstretch>
-        <verstretch>0</verstretch>
-       </sizepolicy>
-      </property>
-      <property name="focusPolicy">
-       <enum>Qt::StrongFocus</enum>
-      </property>
-      <property name="minimum">
-       <number>0</number>
-      </property>
-      <property name="maximum">
-       <number>200</number>
-      </property>
-      <property name="singleStep">
-       <number>1</number>
-      </property>
-      <property name="pageStep">
-       <number>50</number>
-      </property>
-      <property name="value">
-       <number>100</number>
-      </property>
-      <property name="orientation">
-       <enum>Qt::Horizontal</enum>
-      </property>
-      <property name="tickPosition">
-       <enum>QSlider::TicksBothSides</enum>
-      </property>
-      <property name="tickInterval">
-       <number>50</number>
-      </property>
-     </widget>
-     <widget class="QLabel" name="lbRpow_3">
-      <property name="geometry">
-       <rect>
-        <x>7</x>
-        <y>70</y>
-        <width>91</width>
-        <height>20</height>
-       </rect>
-      </property>
-      <property name="sizePolicy">
-       <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
-        <horstretch>0</horstretch>
-        <verstretch>0</verstretch>
-       </sizepolicy>
-      </property>
-      <property name="minimumSize">
-       <size>
-        <width>0</width>
-        <height>0</height>
-       </size>
-      </property>
-      <property name="styleSheet">
-       <string notr="true"/>
-      </property>
-      <property name="text">
-       <string> Smoothing:</string>
-      </property>
-      <property name="alignment">
-       <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
-      </property>
-     </widget>
-     <widget class="QSlider" name="powDist">
-      <property name="geometry">
-       <rect>
-        <x>103</x>
-        <y>70</y>
-        <width>311</width>
-        <height>20</height>
-       </rect>
-      </property>
-      <property name="sizePolicy">
-       <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
-        <horstretch>0</horstretch>
-        <verstretch>0</verstretch>
-       </sizepolicy>
-      </property>
-      <property name="focusPolicy">
-       <enum>Qt::StrongFocus</enum>
-      </property>
-      <property name="autoFillBackground">
-       <bool>false</bool>
-      </property>
-      <property name="minimum">
-       <number>0</number>
-      </property>
-      <property name="maximum">
-       <number>400</number>
-      </property>
-      <property name="singleStep">
-       <number>1</number>
-      </property>
-      <property name="pageStep">
-       <number>50</number>
-      </property>
-      <property name="value">
-       <number>100</number>
-      </property>
-      <property name="orientation">
-       <enum>Qt::Horizontal</enum>
-      </property>
-      <property name="tickPosition">
-       <enum>QSlider::TicksBothSides</enum>
-      </property>
-      <property name="tickInterval">
-       <number>100</number>
-      </property>
-     </widget>
-     <widget class="QLabel" name="lbRdz_3">
-      <property name="geometry">
-       <rect>
-        <x>7</x>
-        <y>110</y>
-        <width>91</width>
-        <height>20</height>
-       </rect>
-      </property>
-      <property name="sizePolicy">
-       <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
-        <horstretch>0</horstretch>
-        <verstretch>0</verstretch>
-       </sizepolicy>
-      </property>
-      <property name="minimumSize">
-       <size>
-        <width>0</width>
-        <height>0</height>
-       </size>
-      </property>
-      <property name="styleSheet">
-       <string notr="true"/>
-      </property>
-      <property name="text">
-       <string> Dead Zone:</string>
-      </property>
-      <property name="alignment">
-       <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
-      </property>
-     </widget>
-     <widget class="QLabel" name="lbPowDist">
-      <property name="geometry">
-       <rect>
-        <x>430</x>
-        <y>70</y>
-        <width>51</width>
-        <height>20</height>
-       </rect>
-      </property>
-      <property name="minimumSize">
-       <size>
-        <width>40</width>
-        <height>0</height>
-       </size>
-      </property>
-      <property name="text">
-       <string>1,00</string>
-      </property>
-      <property name="alignment">
-       <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
-      </property>
-     </widget>
-     <widget class="QLabel" name="lbDmax">
-      <property name="geometry">
-       <rect>
-        <x>7</x>
-        <y>30</y>
-        <width>91</width>
-        <height>20</height>
-       </rect>
-      </property>
-      <property name="sizePolicy">
-       <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
-        <horstretch>0</horstretch>
-        <verstretch>0</verstretch>
-       </sizepolicy>
-      </property>
-      <property name="minimumSize">
-       <size>
-        <width>0</width>
-        <height>0</height>
-       </size>
-      </property>
-      <property name="styleSheet">
-       <string notr="true"/>
-      </property>
-      <property name="text">
-       <string> Max distance:</string>
-      </property>
-      <property name="alignment">
-       <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
-      </property>
-     </widget>
-     <widget class="QSlider" name="dzDist">
-      <property name="geometry">
-       <rect>
-        <x>103</x>
-        <y>110</y>
-        <width>311</width>
-        <height>20</height>
-       </rect>
-      </property>
-      <property name="sizePolicy">
-       <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
-        <horstretch>0</horstretch>
-        <verstretch>0</verstretch>
-       </sizepolicy>
-      </property>
-      <property name="focusPolicy">
-       <enum>Qt::StrongFocus</enum>
-      </property>
-      <property name="minimum">
-       <number>0</number>
-      </property>
-      <property name="maximum">
-       <number>50</number>
-      </property>
-      <property name="singleStep">
-       <number>1</number>
-      </property>
-      <property name="pageStep">
-       <number>10</number>
-      </property>
-      <property name="value">
-       <number>2</number>
-      </property>
-      <property name="orientation">
-       <enum>Qt::Horizontal</enum>
-      </property>
-      <property name="tickPosition">
-       <enum>QSlider::TicksBothSides</enum>
-      </property>
-      <property name="tickInterval">
-       <number>10</number>
-      </property>
-     </widget>
-     <widget class="QLabel" name="lbMaxDist">
-      <property name="geometry">
-       <rect>
-        <x>420</x>
-        <y>30</y>
-        <width>71</width>
-        <height>20</height>
-       </rect>
-      </property>
-      <property name="minimumSize">
-       <size>
-        <width>45</width>
-        <height>0</height>
-       </size>
-      </property>
-      <property name="text">
-       <string>10,00</string>
-      </property>
-      <property name="alignment">
-       <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
-      </property>
-     </widget>
-     <widget class="QLabel" name="lbDZDist">
-      <property name="geometry">
-       <rect>
-        <x>420</x>
-        <y>110</y>
-        <width>71</width>
-        <height>20</height>
-       </rect>
-      </property>
-      <property name="minimumSize">
-       <size>
-        <width>45</width>
-        <height>0</height>
-       </size>
-      </property>
-      <property name="text">
-       <string>0,02</string>
-      </property>
-      <property name="alignment">
-       <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
-      </property>
-     </widget>
+     <layout class="QGridLayout" name="gridLayout_4">
+      <item row="1" column="2">
+       <widget class="QLabel" name="lbMaxDist">
+        <property name="minimumSize">
+         <size>
+          <width>45</width>
+          <height>0</height>
+         </size>
+        </property>
+        <property name="text">
+         <string>10,00</string>
+        </property>
+        <property name="alignment">
+         <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+        </property>
+       </widget>
+      </item>
+      <item row="2" column="0">
+       <widget class="QLabel" name="lbRpow_3">
+        <property name="sizePolicy">
+         <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
+          <horstretch>0</horstretch>
+          <verstretch>0</verstretch>
+         </sizepolicy>
+        </property>
+        <property name="minimumSize">
+         <size>
+          <width>0</width>
+          <height>0</height>
+         </size>
+        </property>
+        <property name="styleSheet">
+         <string notr="true"/>
+        </property>
+        <property name="text">
+         <string>Smoothing power:</string>
+        </property>
+        <property name="alignment">
+         <set>Qt::AlignLeading|Qt::AlignLeft|Qt::AlignVCenter</set>
+        </property>
+       </widget>
+      </item>
+      <item row="1" column="0">
+       <widget class="QLabel" name="lbDmax">
+        <property name="sizePolicy">
+         <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
+          <horstretch>0</horstretch>
+          <verstretch>0</verstretch>
+         </sizepolicy>
+        </property>
+        <property name="minimumSize">
+         <size>
+          <width>0</width>
+          <height>0</height>
+         </size>
+        </property>
+        <property name="styleSheet">
+         <string notr="true"/>
+        </property>
+        <property name="text">
+         <string>Max distance:</string>
+        </property>
+        <property name="alignment">
+         <set>Qt::AlignLeading|Qt::AlignLeft|Qt::AlignVCenter</set>
+        </property>
+       </widget>
+      </item>
+      <item row="1" column="1">
+       <widget class="QSlider" name="maxDist">
+        <property name="sizePolicy">
+         <sizepolicy hsizetype="Expanding" vsizetype="Fixed">
+          <horstretch>0</horstretch>
+          <verstretch>0</verstretch>
+         </sizepolicy>
+        </property>
+        <property name="focusPolicy">
+         <enum>Qt::StrongFocus</enum>
+        </property>
+        <property name="minimum">
+         <number>0</number>
+        </property>
+        <property name="maximum">
+         <number>200</number>
+        </property>
+        <property name="singleStep">
+         <number>1</number>
+        </property>
+        <property name="pageStep">
+         <number>50</number>
+        </property>
+        <property name="value">
+         <number>100</number>
+        </property>
+        <property name="orientation">
+         <enum>Qt::Horizontal</enum>
+        </property>
+        <property name="tickPosition">
+         <enum>QSlider::TicksBothSides</enum>
+        </property>
+        <property name="tickInterval">
+         <number>50</number>
+        </property>
+       </widget>
+      </item>
+      <item row="2" column="1">
+       <widget class="QSlider" name="powDist">
+        <property name="sizePolicy">
+         <sizepolicy hsizetype="Expanding" vsizetype="Fixed">
+          <horstretch>0</horstretch>
+          <verstretch>0</verstretch>
+         </sizepolicy>
+        </property>
+        <property name="focusPolicy">
+         <enum>Qt::StrongFocus</enum>
+        </property>
+        <property name="autoFillBackground">
+         <bool>false</bool>
+        </property>
+        <property name="minimum">
+         <number>0</number>
+        </property>
+        <property name="maximum">
+         <number>400</number>
+        </property>
+        <property name="singleStep">
+         <number>1</number>
+        </property>
+        <property name="pageStep">
+         <number>50</number>
+        </property>
+        <property name="value">
+         <number>100</number>
+        </property>
+        <property name="orientation">
+         <enum>Qt::Horizontal</enum>
+        </property>
+        <property name="tickPosition">
+         <enum>QSlider::TicksBothSides</enum>
+        </property>
+        <property name="tickInterval">
+         <number>100</number>
+        </property>
+       </widget>
+      </item>
+      <item row="2" column="2">
+       <widget class="QLabel" name="lbPowDist">
+        <property name="minimumSize">
+         <size>
+          <width>40</width>
+          <height>0</height>
+         </size>
+        </property>
+        <property name="text">
+         <string>1,00</string>
+        </property>
+        <property name="alignment">
+         <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+        </property>
+       </widget>
+      </item>
+      <item row="0" column="0">
+       <widget class="QLabel" name="lbRdz_3">
+        <property name="sizePolicy">
+         <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
+          <horstretch>0</horstretch>
+          <verstretch>0</verstretch>
+         </sizepolicy>
+        </property>
+        <property name="minimumSize">
+         <size>
+          <width>0</width>
+          <height>0</height>
+         </size>
+        </property>
+        <property name="styleSheet">
+         <string notr="true"/>
+        </property>
+        <property name="text">
+         <string>Dead Zone:</string>
+        </property>
+        <property name="alignment">
+         <set>Qt::AlignLeading|Qt::AlignLeft|Qt::AlignVCenter</set>
+        </property>
+       </widget>
+      </item>
+      <item row="0" column="1">
+       <widget class="QSlider" name="dzDist">
+        <property name="sizePolicy">
+         <sizepolicy hsizetype="Expanding" vsizetype="Fixed">
+          <horstretch>0</horstretch>
+          <verstretch>0</verstretch>
+         </sizepolicy>
+        </property>
+        <property name="focusPolicy">
+         <enum>Qt::StrongFocus</enum>
+        </property>
+        <property name="minimum">
+         <number>0</number>
+        </property>
+        <property name="maximum">
+         <number>50</number>
+        </property>
+        <property name="singleStep">
+         <number>1</number>
+        </property>
+        <property name="pageStep">
+         <number>10</number>
+        </property>
+        <property name="value">
+         <number>2</number>
+        </property>
+        <property name="orientation">
+         <enum>Qt::Horizontal</enum>
+        </property>
+        <property name="tickPosition">
+         <enum>QSlider::TicksBothSides</enum>
+        </property>
+        <property name="tickInterval">
+         <number>10</number>
+        </property>
+       </widget>
+      </item>
+      <item row="0" column="2">
+       <widget class="QLabel" name="lbDZDist">
+        <property name="minimumSize">
+         <size>
+          <width>45</width>
+          <height>0</height>
+         </size>
+        </property>
+        <property name="text">
+         <string>0,02</string>
+        </property>
+        <property name="alignment">
+         <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+        </property>
+       </widget>
+      </item>
+     </layout>
     </widget>
    </item>
-   <item>
+   <item row="5" column="0">
     <widget class="QGroupBox" name="groupBox_3">
      <property name="sizePolicy">
       <sizepolicy hsizetype="MinimumExpanding" vsizetype="Fixed">
@@ -707,227 +619,194 @@
      <property name="title">
       <string>Zoom smoothing:  </string>
      </property>
-     <widget class="QLabel" name="lbPowZoom">
-      <property name="geometry">
-       <rect>
-        <x>434</x>
-        <y>30</y>
-        <width>45</width>
-        <height>20</height>
-       </rect>
-      </property>
-      <property name="minimumSize">
-       <size>
-        <width>45</width>
-        <height>0</height>
-       </size>
-      </property>
-      <property name="text">
-       <string>2,00</string>
-      </property>
-      <property name="alignment">
-       <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
-      </property>
-     </widget>
-     <widget class="QSlider" name="powZoom">
-      <property name="geometry">
-       <rect>
-        <x>103</x>
-        <y>30</y>
-        <width>311</width>
-        <height>20</height>
-       </rect>
-      </property>
-      <property name="sizePolicy">
-       <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
-        <horstretch>0</horstretch>
-        <verstretch>0</verstretch>
-       </sizepolicy>
-      </property>
-      <property name="focusPolicy">
-       <enum>Qt::StrongFocus</enum>
-      </property>
-      <property name="autoFillBackground">
-       <bool>false</bool>
-      </property>
-      <property name="minimum">
-       <number>0</number>
-      </property>
-      <property name="maximum">
-       <number>400</number>
-      </property>
-      <property name="singleStep">
-       <number>1</number>
-      </property>
-      <property name="pageStep">
-       <number>50</number>
-      </property>
-      <property name="value">
-       <number>200</number>
-      </property>
-      <property name="orientation">
-       <enum>Qt::Horizontal</enum>
-      </property>
-      <property name="tickPosition">
-       <enum>QSlider::TicksBothSides</enum>
-      </property>
-      <property name="tickInterval">
-       <number>100</number>
-      </property>
-     </widget>
-     <widget class="QLabel" name="lbZpow">
-      <property name="geometry">
-       <rect>
-        <x>7</x>
-        <y>30</y>
-        <width>91</width>
-        <height>20</height>
-       </rect>
-      </property>
-      <property name="sizePolicy">
-       <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
-        <horstretch>0</horstretch>
-        <verstretch>0</verstretch>
-       </sizepolicy>
-      </property>
-      <property name="minimumSize">
-       <size>
-        <width>0</width>
-        <height>0</height>
-       </size>
-      </property>
-      <property name="styleSheet">
-       <string notr="true"/>
-      </property>
-      <property name="text">
-       <string> Smoothing :</string>
-      </property>
-      <property name="alignment">
-       <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
-      </property>
-     </widget>
-     <widget class="QSlider" name="maxZ">
-      <property name="geometry">
-       <rect>
-        <x>103</x>
-        <y>60</y>
-        <width>311</width>
-        <height>20</height>
-       </rect>
-      </property>
-      <property name="sizePolicy">
-       <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
-        <horstretch>0</horstretch>
-        <verstretch>0</verstretch>
-       </sizepolicy>
-      </property>
-      <property name="focusPolicy">
-       <enum>Qt::StrongFocus</enum>
-      </property>
-      <property name="autoFillBackground">
-       <bool>false</bool>
-      </property>
-      <property name="minimum">
-       <number>0</number>
-      </property>
-      <property name="maximum">
-       <number>1000</number>
-      </property>
-      <property name="singleStep">
-       <number>1</number>
-      </property>
-      <property name="pageStep">
-       <number>50</number>
-      </property>
-      <property name="value">
-       <number>150</number>
-      </property>
-      <property name="orientation">
-       <enum>Qt::Horizontal</enum>
-      </property>
-      <property name="tickPosition">
-       <enum>QSlider::TicksBothSides</enum>
-      </property>
-      <property name="tickInterval">
-       <number>100</number>
-      </property>
-     </widget>
-     <widget class="QLabel" name="lbZpow_2">
-      <property name="geometry">
-       <rect>
-        <x>7</x>
-        <y>60</y>
-        <width>91</width>
-        <height>20</height>
-       </rect>
-      </property>
-      <property name="sizePolicy">
-       <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
-        <horstretch>0</horstretch>
-        <verstretch>0</verstretch>
-       </sizepolicy>
-      </property>
-      <property name="minimumSize">
-       <size>
-        <width>0</width>
-        <height>0</height>
-       </size>
-      </property>
-      <property name="styleSheet">
-       <string notr="true"/>
-      </property>
-      <property name="text">
-       <string>Max Z:</string>
-      </property>
-      <property name="alignment">
-       <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
-      </property>
-     </widget>
-     <widget class="QLabel" name="lbMaxZ">
-      <property name="geometry">
-       <rect>
-        <x>434</x>
-        <y>60</y>
-        <width>45</width>
-        <height>20</height>
-       </rect>
-      </property>
-      <property name="minimumSize">
-       <size>
-        <width>45</width>
-        <height>0</height>
-       </size>
-      </property>
-      <property name="text">
-       <string>15,00</string>
-      </property>
-      <property name="alignment">
-       <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
-      </property>
-     </widget>
+     <layout class="QGridLayout" name="gridLayout_3">
+      <item row="2" column="0">
+       <widget class="QLabel" name="lbZpow">
+        <property name="sizePolicy">
+         <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
+          <horstretch>0</horstretch>
+          <verstretch>0</verstretch>
+         </sizepolicy>
+        </property>
+        <property name="minimumSize">
+         <size>
+          <width>0</width>
+          <height>0</height>
+         </size>
+        </property>
+        <property name="styleSheet">
+         <string notr="true"/>
+        </property>
+        <property name="text">
+         <string>Smoothing power:</string>
+        </property>
+        <property name="alignment">
+         <set>Qt::AlignLeading|Qt::AlignLeft|Qt::AlignVCenter</set>
+        </property>
+       </widget>
+      </item>
+      <item row="2" column="2">
+       <widget class="QLabel" name="lbPowZoom">
+        <property name="minimumSize">
+         <size>
+          <width>45</width>
+          <height>0</height>
+         </size>
+        </property>
+        <property name="text">
+         <string>2,00</string>
+        </property>
+        <property name="alignment">
+         <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+        </property>
+       </widget>
+      </item>
+      <item row="2" column="1">
+       <widget class="QSlider" name="powZoom">
+        <property name="sizePolicy">
+         <sizepolicy hsizetype="Expanding" vsizetype="Fixed">
+          <horstretch>0</horstretch>
+          <verstretch>0</verstretch>
+         </sizepolicy>
+        </property>
+        <property name="focusPolicy">
+         <enum>Qt::StrongFocus</enum>
+        </property>
+        <property name="autoFillBackground">
+         <bool>false</bool>
+        </property>
+        <property name="minimum">
+         <number>0</number>
+        </property>
+        <property name="maximum">
+         <number>400</number>
+        </property>
+        <property name="singleStep">
+         <number>1</number>
+        </property>
+        <property name="pageStep">
+         <number>50</number>
+        </property>
+        <property name="value">
+         <number>200</number>
+        </property>
+        <property name="orientation">
+         <enum>Qt::Horizontal</enum>
+        </property>
+        <property name="tickPosition">
+         <enum>QSlider::TicksBothSides</enum>
+        </property>
+        <property name="tickInterval">
+         <number>100</number>
+        </property>
+       </widget>
+      </item>
+      <item row="1" column="0">
+       <widget class="QLabel" name="lbZpow_2">
+        <property name="sizePolicy">
+         <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
+          <horstretch>0</horstretch>
+          <verstretch>0</verstretch>
+         </sizepolicy>
+        </property>
+        <property name="minimumSize">
+         <size>
+          <width>0</width>
+          <height>0</height>
+         </size>
+        </property>
+        <property name="styleSheet">
+         <string notr="true"/>
+        </property>
+        <property name="text">
+         <string>Max Z:</string>
+        </property>
+        <property name="alignment">
+         <set>Qt::AlignLeading|Qt::AlignLeft|Qt::AlignVCenter</set>
+        </property>
+       </widget>
+      </item>
+      <item row="1" column="1">
+       <widget class="QSlider" name="maxZ">
+        <property name="sizePolicy">
+         <sizepolicy hsizetype="Expanding" vsizetype="Fixed">
+          <horstretch>0</horstretch>
+          <verstretch>0</verstretch>
+         </sizepolicy>
+        </property>
+        <property name="focusPolicy">
+         <enum>Qt::StrongFocus</enum>
+        </property>
+        <property name="autoFillBackground">
+         <bool>false</bool>
+        </property>
+        <property name="minimum">
+         <number>0</number>
+        </property>
+        <property name="maximum">
+         <number>1000</number>
+        </property>
+        <property name="singleStep">
+         <number>1</number>
+        </property>
+        <property name="pageStep">
+         <number>50</number>
+        </property>
+        <property name="value">
+         <number>150</number>
+        </property>
+        <property name="orientation">
+         <enum>Qt::Horizontal</enum>
+        </property>
+        <property name="tickPosition">
+         <enum>QSlider::TicksBothSides</enum>
+        </property>
+        <property name="tickInterval">
+         <number>100</number>
+        </property>
+       </widget>
+      </item>
+      <item row="1" column="2">
+       <widget class="QLabel" name="lbMaxZ">
+        <property name="minimumSize">
+         <size>
+          <width>45</width>
+          <height>0</height>
+         </size>
+        </property>
+        <property name="text">
+         <string>15,00</string>
+        </property>
+        <property name="alignment">
+         <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+        </property>
+       </widget>
+      </item>
+     </layout>
     </widget>
    </item>
-   <item>
-    <widget class="QDialogButtonBox" name="buttonBox">
-     <property name="sizePolicy">
-      <sizepolicy hsizetype="Expanding" vsizetype="Fixed">
-       <horstretch>0</horstretch>
-       <verstretch>0</verstretch>
-      </sizepolicy>
+   <item row="1" column="0">
+    <widget class="QLabel" name="label_3">
+     <property name="text">
+      <string>When you lean forward, zoom smoothing increases the smoothing power for rotations. Maximum additonal smoothing power occurs when you lean forward by a distance of  Max Z.</string>
      </property>
-     <property name="layoutDirection">
-      <enum>Qt::LeftToRight</enum>
-     </property>
-     <property name="standardButtons">
-      <set>QDialogButtonBox::Cancel|QDialogButtonBox::Ok</set>
-     </property>
-     <property name="centerButtons">
+     <property name="wordWrap">
       <bool>true</bool>
      </property>
     </widget>
    </item>
   </layout>
  </widget>
+ <tabstops>
+  <tabstop>dzRot</tabstop>
+  <tabstop>maxRot</tabstop>
+  <tabstop>powRot</tabstop>
+  <tabstop>dzDist</tabstop>
+  <tabstop>maxDist</tabstop>
+  <tabstop>powDist</tabstop>
+  <tabstop>maxZ</tabstop>
+  <tabstop>powZoom</tabstop>
+ </tabstops>
  <resources>
   <include location="../gui/opentrack-res.qrc"/>
  </resources>
diff --git a/filter-hamilton/lang/nl_NL.ts b/filter-hamilton/lang/nl_NL.ts
index b03e4c0b..1c720540 100644
--- a/filter-hamilton/lang/nl_NL.ts
+++ b/filter-hamilton/lang/nl_NL.ts
@@ -8,18 +8,10 @@
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <source> Smoothing :</source>
-        <translation type="unfinished"></translation>
-    </message>
-    <message>
         <source>Positions: </source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <source> Max distance:</source>
-        <translation type="unfinished"></translation>
-    </message>
-    <message>
         <source>Zoom smoothing:  </source>
         <translation type="unfinished"></translation>
     </message>
@@ -52,15 +44,27 @@
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <source> Dead Zone:</source>
+        <source>15,00</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <source> Smoothing:</source>
+        <source>Smoothing power:</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <source>15,00</source>
+        <source>Dead Zone:</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <source>Max distance:</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <source>For both rotations and positions: No movement occurs within the dead zone. Smoothing scales down to minimum at max distance + 2 x dead zone.</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <source>When you lean forward, zoom smoothing increases the smoothing power for rotations. Maximum additonal smoothing power occurs when you lean forward by a distance of  Max Z.</source>
         <translation type="unfinished"></translation>
     </message>
 </context>
diff --git a/filter-hamilton/lang/ru_RU.ts b/filter-hamilton/lang/ru_RU.ts
index dfbb2268..f0681b21 100644
--- a/filter-hamilton/lang/ru_RU.ts
+++ b/filter-hamilton/lang/ru_RU.ts
@@ -8,18 +8,10 @@
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <source> Smoothing :</source>
-        <translation type="unfinished"></translation>
-    </message>
-    <message>
         <source>Positions: </source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <source> Max distance:</source>
-        <translation type="unfinished"></translation>
-    </message>
-    <message>
         <source>Zoom smoothing:  </source>
         <translation type="unfinished"></translation>
     </message>
@@ -52,15 +44,27 @@
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <source> Dead Zone:</source>
+        <source>15,00</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <source> Smoothing:</source>
+        <source>Smoothing power:</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <source>15,00</source>
+        <source>Dead Zone:</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <source>Max distance:</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <source>For both rotations and positions: No movement occurs within the dead zone. Smoothing scales down to minimum at max distance + 2 x dead zone.</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <source>When you lean forward, zoom smoothing increases the smoothing power for rotations. Maximum additonal smoothing power occurs when you lean forward by a distance of  Max Z.</source>
         <translation type="unfinished"></translation>
     </message>
 </context>
diff --git a/filter-hamilton/lang/stub.ts b/filter-hamilton/lang/stub.ts
index a8af9f98..2b767312 100644
--- a/filter-hamilton/lang/stub.ts
+++ b/filter-hamilton/lang/stub.ts
@@ -8,18 +8,10 @@
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <source> Smoothing :</source>
-        <translation type="unfinished"></translation>
-    </message>
-    <message>
         <source>Positions: </source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <source> Max distance:</source>
-        <translation type="unfinished"></translation>
-    </message>
-    <message>
         <source>Zoom smoothing:  </source>
         <translation type="unfinished"></translation>
     </message>
@@ -52,15 +44,27 @@
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <source> Dead Zone:</source>
+        <source>15,00</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <source> Smoothing:</source>
+        <source>Smoothing power:</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <source>15,00</source>
+        <source>Dead Zone:</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <source>Max distance:</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <source>For both rotations and positions: No movement occurs within the dead zone. Smoothing scales down to minimum at max distance + 2 x dead zone.</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <source>When you lean forward, zoom smoothing increases the smoothing power for rotations. Maximum additonal smoothing power occurs when you lean forward by a distance of  Max Z.</source>
         <translation type="unfinished"></translation>
     </message>
 </context>
diff --git a/filter-hamilton/lang/zh_CN.ts b/filter-hamilton/lang/zh_CN.ts
index 4fc4d812..222569e4 100644
--- a/filter-hamilton/lang/zh_CN.ts
+++ b/filter-hamilton/lang/zh_CN.ts
@@ -8,18 +8,10 @@
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <source> Smoothing :</source>
-        <translation type="unfinished"></translation>
-    </message>
-    <message>
         <source>Positions: </source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <source> Max distance:</source>
-        <translation type="unfinished"></translation>
-    </message>
-    <message>
         <source>Zoom smoothing:  </source>
         <translation type="unfinished"></translation>
     </message>
@@ -52,15 +44,27 @@
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <source> Dead Zone:</source>
+        <source>15,00</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <source> Smoothing:</source>
+        <source>Smoothing power:</source>
         <translation type="unfinished"></translation>
     </message>
     <message>
-        <source>15,00</source>
+        <source>Dead Zone:</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <source>Max distance:</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <source>For both rotations and positions: No movement occurs within the dead zone. Smoothing scales down to minimum at max distance + 2 x dead zone.</source>
+        <translation type="unfinished"></translation>
+    </message>
+    <message>
+        <source>When you lean forward, zoom smoothing increases the smoothing power for rotations. Maximum additonal smoothing power occurs when you lean forward by a distance of  Max Z.</source>
         <translation type="unfinished"></translation>
     </message>
 </context>