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-rw-r--r--filter-nm/CMakeLists.txt1
-rw-r--r--filter-nm/ftnoir_filter_nm.cpp67
-rw-r--r--filter-nm/ftnoir_filter_nm.h81
-rw-r--r--filter-nm/ftnoir_filter_nm_dialog.cpp56
-rw-r--r--filter-nm/ftnoir_nm_filtercontrols.ui312
-rw-r--r--filter-nm/lang/nl_NL.ts62
-rw-r--r--filter-nm/lang/ru_RU.ts62
-rw-r--r--filter-nm/lang/stub.ts62
-rw-r--r--filter-nm/lang/zh_CN.ts62
9 files changed, 765 insertions, 0 deletions
diff --git a/filter-nm/CMakeLists.txt b/filter-nm/CMakeLists.txt
new file mode 100644
index 000000000..49daaee2d
--- /dev/null
+++ b/filter-nm/CMakeLists.txt
@@ -0,0 +1 @@
+otr_module(filter-nm)
diff --git a/filter-nm/ftnoir_filter_nm.cpp b/filter-nm/ftnoir_filter_nm.cpp
new file mode 100644
index 000000000..b222184b7
--- /dev/null
+++ b/filter-nm/ftnoir_filter_nm.cpp
@@ -0,0 +1,67 @@
+/* Copyright (c) 2023 Tom Brazier <tom_github@firstsolo.net>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ */
+#include "ftnoir_filter_nm.h"
+#include "compat/math-imports.hpp"
+#include "compat/macros.h"
+
+#include "api/plugin-api.hpp"
+#include "opentrack/defs.hpp"
+
+#include <algorithm>
+
+filter_nm::filter_nm()
+{
+}
+
+void filter_nm::filter(const double* input, double* output)
+{
+ tVector position = { input[TX], input[TY], input[TZ] };
+ tQuat rotation = QuatFromYPR(input + Yaw);
+
+ // order of axes: x, y, z, yaw, pitch, roll
+ if (unlikely(first_run))
+ {
+ first_run = false;
+ t.start();
+
+ last_pos_speed = tVector();
+ last_rot_speed = tQuat();
+ last_pos_out = position;
+ last_rot_out = rotation;
+ }
+ else
+ {
+ const double dt = t.elapsed_seconds();
+ t.start();
+
+ const tVector pos_speed = (position - last_pos_in) / dt;
+ const double pos_tau = 1. / *s.pos_responsiveness;
+ double alpha = dt / (dt + pos_tau);
+ last_pos_speed += (pos_speed - last_pos_speed) * alpha;
+ const double factor_pos = min(1.0, VectorLength(last_pos_speed) / (*s.pos_drift_speed * 3.0));
+ alpha *= factor_pos * factor_pos;
+ last_pos_out += (position - last_pos_out) * alpha;
+
+ const tQuat rot_delta = QuatDivide(rotation, last_rot_in);
+ constexpr double ms_per_s = 1000.0; // angular speed quaternions need to be small to work so use °/ms
+ const tQuat rot_speed = Slerp(tQuat(), rot_delta, 1.0 / ms_per_s / dt );
+ const double rot_tau = 1. / *s.rot_responsiveness;
+ alpha = dt / (dt + rot_tau);
+ last_rot_speed = Slerp(last_rot_speed, rot_speed, alpha);
+ const double angular_speed = AngleBetween(tQuat(), last_rot_speed) * ms_per_s;
+ const double factor_rot = min(1.0, angular_speed / (*s.rot_drift_speed * 3.0));
+ alpha *= factor_rot * factor_rot;
+ last_rot_out = Slerp(last_rot_out, rotation, alpha);
+ }
+
+ last_pos_in = position;
+ last_rot_in = rotation;
+ std::copy(last_pos_out.v, last_pos_out.v + 3, output + TX);
+ QuatToYPR(last_rot_out, &output[Yaw]);
+}
+
+OPENTRACK_DECLARE_FILTER(filter_nm, dialog_nm, nmDll)
diff --git a/filter-nm/ftnoir_filter_nm.h b/filter-nm/ftnoir_filter_nm.h
new file mode 100644
index 000000000..84775207c
--- /dev/null
+++ b/filter-nm/ftnoir_filter_nm.h
@@ -0,0 +1,81 @@
+/* Copyright (c) 2023 Tom Brazier <tom_github@firstsolo.net>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ */
+#pragma once
+
+#include "ui_ftnoir_nm_filtercontrols.h"
+
+#include "api/plugin-api.hpp"
+#include "compat/timer.hpp"
+#include "compat/hamilton-tools.h"
+#include "options/options.hpp"
+
+using namespace options;
+
+struct settings_nm : opts
+{
+ value<slider_value> pos_responsiveness;
+ value<slider_value> rot_responsiveness;
+ value<slider_value> pos_drift_speed;
+ value<slider_value> rot_drift_speed;
+
+ settings_nm() :
+ opts("nm-filter"),
+ pos_responsiveness(value<slider_value>(b, "pos-responsiveness", { 13.0, .0, 20.0 })),
+ rot_responsiveness(value<slider_value>(b, "rot-responsiveness", { 16.0, .0, 20.0 })),
+ pos_drift_speed(value<slider_value>(b, "pos-drift-speed", { 5.0, 0.1, 50.0 })),
+ rot_drift_speed(value<slider_value>(b, "rot-drift-speed", { 7.0, 0.1, 50.0 }))
+ {
+ }
+};
+
+struct filter_nm : IFilter
+{
+ filter_nm();
+ void filter(const double* input, double* output) override;
+ void center() override { first_run = true; }
+ module_status initialize() override { return status_ok(); }
+
+private:
+ tVector last_pos_in;
+ tQuat last_rot_in;
+ tVector last_pos_out;
+ tQuat last_rot_out;
+ tVector last_pos_speed;
+ tQuat last_rot_speed;
+ Timer t;
+ settings_nm s;
+ bool first_run = true;
+};
+
+class dialog_nm : public IFilterDialog
+{
+ Q_OBJECT
+public:
+ dialog_nm();
+ void register_filter(IFilter*) override {}
+ void unregister_filter() override {}
+ void save() override;
+ void reload() override;
+ bool embeddable() noexcept override { return true; }
+ void set_buttons_visible(bool x) override;
+
+private:
+ Ui::UICdialog_nm ui;
+ settings_nm s;
+
+private slots:
+ void doOK();
+ void doCancel();
+};
+
+class nmDll : public Metadata
+{
+ Q_OBJECT
+
+ QString name() override { return tr("NaturalMovement"); }
+ QIcon icon() override { return QIcon(":/images/filter-16.png"); }
+};
diff --git a/filter-nm/ftnoir_filter_nm_dialog.cpp b/filter-nm/ftnoir_filter_nm_dialog.cpp
new file mode 100644
index 000000000..f3626caeb
--- /dev/null
+++ b/filter-nm/ftnoir_filter_nm_dialog.cpp
@@ -0,0 +1,56 @@
+/* Copyright (c) 2023 Tom Brazier <tom_github@firstsolo.net>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ */
+#include "ftnoir_filter_nm.h"
+
+using namespace options;
+
+dialog_nm::dialog_nm()
+{
+ ui.setupUi(this);
+
+ tie_setting(s.pos_responsiveness, ui.pos_responsiveness_slider);
+ tie_setting(s.pos_responsiveness, ui.pos_responsiveness, [](double x)
+ { return QStringLiteral("%1").arg(x, 0, 'f', 2); });
+
+ tie_setting(s.rot_responsiveness, ui.rot_responsiveness_slider);
+ tie_setting(s.rot_responsiveness, ui.rot_responsiveness, [](double x)
+ { return QStringLiteral("%1").arg(x, 0, 'f', 2); });
+
+ tie_setting(s.pos_drift_speed, ui.pos_drift_speed_slider);
+ tie_setting(s.pos_drift_speed, ui.pos_drift_speed, [](double x)
+ { return QStringLiteral("%1").arg(x, 0, 'f', 2); });
+
+ tie_setting(s.rot_drift_speed, ui.rot_drift_speed_slider);
+ tie_setting(s.rot_drift_speed, ui.rot_drift_speed, [](double x)
+ { return QStringLiteral("%1").arg(x, 0, 'f', 2); });
+}
+
+void dialog_nm::doOK()
+{
+ save();
+ close();
+}
+
+void dialog_nm::doCancel()
+{
+ close();
+}
+
+void dialog_nm::save()
+{
+ s.b->save();
+}
+
+void dialog_nm::reload()
+{
+ s.b->reload();
+}
+
+void dialog_nm::set_buttons_visible(bool x)
+{
+ ui.buttonBox->setVisible(x);
+}
diff --git a/filter-nm/ftnoir_nm_filtercontrols.ui b/filter-nm/ftnoir_nm_filtercontrols.ui
new file mode 100644
index 000000000..7e317e740
--- /dev/null
+++ b/filter-nm/ftnoir_nm_filtercontrols.ui
@@ -0,0 +1,312 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>UICdialog_nm</class>
+ <widget class="QDialog" name="UICdialog_nm">
+ <property name="geometry">
+ <rect>
+ <x>0</x>
+ <y>0</y>
+ <width>438</width>
+ <height>559</height>
+ </rect>
+ </property>
+ <property name="windowTitle">
+ <string>Dialog</string>
+ </property>
+ <layout class="QGridLayout" name="gridLayout_2">
+ <item row="0" column="0">
+ <widget class="QGroupBox" name="groupBox">
+ <property name="title">
+ <string>Responsiveness</string>
+ </property>
+ <layout class="QGridLayout" name="gridLayout">
+ <item row="1" column="0">
+ <widget class="QLabel" name="label_7">
+ <property name="text">
+ <string>Rotation</string>
+ </property>
+ </widget>
+ </item>
+ <item row="0" column="1">
+ <widget class="QLabel" name="pos_responsiveness">
+ <property name="sizePolicy">
+ <sizepolicy hsizetype="Fixed" vsizetype="Preferred">
+ <horstretch>0</horstretch>
+ <verstretch>0</verstretch>
+ </sizepolicy>
+ </property>
+ <property name="minimumSize">
+ <size>
+ <width>30</width>
+ <height>0</height>
+ </size>
+ </property>
+ <property name="text">
+ <string>10.0</string>
+ </property>
+ <property name="alignment">
+ <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+ </property>
+ </widget>
+ </item>
+ <item row="1" column="1">
+ <widget class="QLabel" name="rot_responsiveness">
+ <property name="minimumSize">
+ <size>
+ <width>30</width>
+ <height>0</height>
+ </size>
+ </property>
+ <property name="text">
+ <string>10.0</string>
+ </property>
+ <property name="alignment">
+ <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+ </property>
+ </widget>
+ </item>
+ <item row="1" column="2">
+ <widget class="QSlider" name="rot_responsiveness_slider">
+ <property name="maximum">
+ <number>40</number>
+ </property>
+ <property name="orientation">
+ <enum>Qt::Horizontal</enum>
+ </property>
+ </widget>
+ </item>
+ <item row="0" column="2">
+ <widget class="QSlider" name="pos_responsiveness_slider">
+ <property name="sizePolicy">
+ <sizepolicy hsizetype="Expanding" vsizetype="Maximum">
+ <horstretch>0</horstretch>
+ <verstretch>0</verstretch>
+ </sizepolicy>
+ </property>
+ <property name="maximum">
+ <number>40</number>
+ </property>
+ <property name="orientation">
+ <enum>Qt::Horizontal</enum>
+ </property>
+ </widget>
+ </item>
+ <item row="0" column="0">
+ <widget class="QLabel" name="label">
+ <property name="text">
+ <string>Position</string>
+ </property>
+ </widget>
+ </item>
+ </layout>
+ </widget>
+ </item>
+ <item row="2" column="0">
+ <widget class="QLabel" name="label_2">
+ <property name="minimumSize">
+ <size>
+ <width>0</width>
+ <height>0</height>
+ </size>
+ </property>
+ <property name="text">
+ <string>Natural movement filter by Tom Brazier: Cancels higher frequency noise and the natural tendency for our heads to drift even when we think we are sitting still.</string>
+ </property>
+ <property name="textFormat">
+ <enum>Qt::PlainText</enum>
+ </property>
+ <property name="alignment">
+ <set>Qt::AlignLeading|Qt::AlignLeft|Qt::AlignTop</set>
+ </property>
+ <property name="wordWrap">
+ <bool>true</bool>
+ </property>
+ </widget>
+ </item>
+ <item row="1" column="0">
+ <widget class="QGroupBox" name="groupBox_2">
+ <property name="title">
+ <string>Drift speeds</string>
+ </property>
+ <layout class="QGridLayout" name="gridLayout_3">
+ <item row="0" column="2">
+ <widget class="QLabel" name="label_14">
+ <property name="text">
+ <string>mm/s</string>
+ </property>
+ </widget>
+ </item>
+ <item row="0" column="0">
+ <widget class="QLabel" name="label_4">
+ <property name="text">
+ <string>Position</string>
+ </property>
+ </widget>
+ </item>
+ <item row="0" column="1">
+ <widget class="QLabel" name="pos_drift_speed">
+ <property name="sizePolicy">
+ <sizepolicy hsizetype="Fixed" vsizetype="Preferred">
+ <horstretch>0</horstretch>
+ <verstretch>0</verstretch>
+ </sizepolicy>
+ </property>
+ <property name="minimumSize">
+ <size>
+ <width>40</width>
+ <height>0</height>
+ </size>
+ </property>
+ <property name="text">
+ <string>50</string>
+ </property>
+ <property name="alignment">
+ <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+ </property>
+ </widget>
+ </item>
+ <item row="4" column="3">
+ <widget class="QSlider" name="rot_drift_speed_slider">
+ <property name="minimum">
+ <number>1</number>
+ </property>
+ <property name="maximum">
+ <number>500</number>
+ </property>
+ <property name="orientation">
+ <enum>Qt::Horizontal</enum>
+ </property>
+ </widget>
+ </item>
+ <item row="4" column="0">
+ <widget class="QLabel" name="label_8">
+ <property name="text">
+ <string>Rotation</string>
+ </property>
+ </widget>
+ </item>
+ <item row="4" column="1">
+ <widget class="QLabel" name="rot_drift_speed">
+ <property name="minimumSize">
+ <size>
+ <width>40</width>
+ <height>0</height>
+ </size>
+ </property>
+ <property name="text">
+ <string>100</string>
+ </property>
+ <property name="alignment">
+ <set>Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter</set>
+ </property>
+ </widget>
+ </item>
+ <item row="4" column="2">
+ <widget class="QLabel" name="label_24">
+ <property name="text">
+ <string>°/s</string>
+ </property>
+ </widget>
+ </item>
+ <item row="0" column="3">
+ <widget class="QSlider" name="pos_drift_speed_slider">
+ <property name="sizePolicy">
+ <sizepolicy hsizetype="Expanding" vsizetype="Maximum">
+ <horstretch>0</horstretch>
+ <verstretch>0</verstretch>
+ </sizepolicy>
+ </property>
+ <property name="minimum">
+ <number>1</number>
+ </property>
+ <property name="maximum">
+ <number>500</number>
+ </property>
+ <property name="orientation">
+ <enum>Qt::Horizontal</enum>
+ </property>
+ </widget>
+ </item>
+ </layout>
+ </widget>
+ </item>
+ <item row="6" column="0">
+ <widget class="QDialogButtonBox" name="buttonBox">
+ <property name="orientation">
+ <enum>Qt::Horizontal</enum>
+ </property>
+ <property name="standardButtons">
+ <set>QDialogButtonBox::Cancel|QDialogButtonBox::Ok</set>
+ </property>
+ </widget>
+ </item>
+ <item row="4" column="0">
+ <widget class="QLabel" name="label_15">
+ <property name="text">
+ <string>Instructions: Set all sliders to minimum. Then for each of rotation and position: First, increase responsiveness until the filter only just cancels jerkiness for faster head movements. Second, increase drift speed until the filter only just cancels drift movement when your head is still.</string>
+ </property>
+ <property name="alignment">
+ <set>Qt::AlignLeading|Qt::AlignLeft|Qt::AlignTop</set>
+ </property>
+ <property name="wordWrap">
+ <bool>true</bool>
+ </property>
+ </widget>
+ </item>
+ <item row="5" column="0">
+ <spacer name="verticalSpacer">
+ <property name="orientation">
+ <enum>Qt::Vertical</enum>
+ </property>
+ <property name="sizeHint" stdset="0">
+ <size>
+ <width>20</width>
+ <height>40</height>
+ </size>
+ </property>
+ </spacer>
+ </item>
+ </layout>
+ </widget>
+ <tabstops>
+ <tabstop>pos_responsiveness_slider</tabstop>
+ <tabstop>rot_responsiveness_slider</tabstop>
+ <tabstop>pos_drift_speed_slider</tabstop>
+ <tabstop>rot_drift_speed_slider</tabstop>
+ </tabstops>
+ <resources/>
+ <connections>
+ <connection>
+ <sender>buttonBox</sender>
+ <signal>accepted()</signal>
+ <receiver>UICdialog_nm</receiver>
+ <slot>accept()</slot>
+ <hints>
+ <hint type="sourcelabel">
+ <x>248</x>
+ <y>254</y>
+ </hint>
+ <hint type="destinationlabel">
+ <x>157</x>
+ <y>274</y>
+ </hint>
+ </hints>
+ </connection>
+ <connection>
+ <sender>buttonBox</sender>
+ <signal>rejected()</signal>
+ <receiver>UICdialog_nm</receiver>
+ <slot>reject()</slot>
+ <hints>
+ <hint type="sourcelabel">
+ <x>316</x>
+ <y>260</y>
+ </hint>
+ <hint type="destinationlabel">
+ <x>286</x>
+ <y>274</y>
+ </hint>
+ </hints>
+ </connection>
+ </connections>
+</ui>
diff --git a/filter-nm/lang/nl_NL.ts b/filter-nm/lang/nl_NL.ts
new file mode 100644
index 000000000..540e2d51b
--- /dev/null
+++ b/filter-nm/lang/nl_NL.ts
@@ -0,0 +1,62 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE TS>
+<TS version="2.1" language="nl_NL">
+<context>
+ <name>UICdialog_nm</name>
+ <message>
+ <source>Dialog</source>
+ <translation type="unfinished"></translation>
+ </message>
+ <message>
+ <source>°/s</source>
+ <translation type="unfinished"></translation>
+ </message>
+ <message>
+ <source>mm/s</source>
+ <translation type="unfinished"></translation>
+ </message>
+ <message>
+ <source>Responsiveness</source>
+ <translation type="unfinished"></translation>
+ </message>
+ <message>
+ <source>10.0</source>
+ <translation type="unfinished"></translation>
+ </message>
+ <message>
+ <source>Drift speeds</source>
+ <translation type="unfinished"></translation>
+ </message>
+ <message>
+ <source>50</source>
+ <translation type="unfinished"></translation>
+ </message>
+ <message>
+ <source>100</source>
+ <translation type="unfinished"></translation>
+ </message>
+ <message>
+ <source>Natural movement filter by Tom Brazier: Cancels higher frequency noise and the natural tendency for our heads to drift even when we think we are sitting still.</source>
+ <translation type="unfinished"></translation>
+ </message>
+ <message>
+ <source>Rotation</source>
+ <translation type="unfinished"></translation>
+ </message>
+ <message>
+ <source>Position</source>
+ <translation type="unfinished"></translation>
+ </message>
+ <message>
+ <source>Instructions: Set all sliders to minimum. Then for each of rotation and position: First, increase responsiveness until the filter only just cancels jerkiness for faster head movements. Second, increase drift speed until the filter only just cancels drift movement when your head is still.</source>
+ <translation type="unfinished"></translation>
+ </message>
+</context>
+<context>
+ <name>nmDll</name>
+ <message>
+ <source>NaturalMovement</source>
+ <translation type="unfinished"></translation>
+ </message>
+</context>
+</TS>
diff --git a/filter-nm/lang/ru_RU.ts b/filter-nm/lang/ru_RU.ts
new file mode 100644
index 000000000..31e5d5ccb
--- /dev/null
+++ b/filter-nm/lang/ru_RU.ts
@@ -0,0 +1,62 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE TS>
+<TS version="2.1" language="ru_RU">
+<context>
+ <name>UICdialog_nm</name>
+ <message>
+ <source>Dialog</source>
+ <translation type="unfinished"></translation>
+ </message>
+ <message>
+ <source>°/s</source>
+ <translation type="unfinished"></translation>
+ </message>
+ <message>
+ <source>mm/s</source>
+ <translation type="unfinished"></translation>
+ </message>
+ <message>
+ <source>Responsiveness</source>
+ <translation type="unfinished"></translation>
+ </message>
+ <message>
+ <source>10.0</source>
+ <translation type="unfinished"></translation>
+ </message>
+ <message>
+ <source>Drift speeds</source>
+ <translation type="unfinished"></translation>
+ </message>
+ <message>
+ <source>50</source>
+ <translation type="unfinished"></translation>
+ </message>
+ <message>
+ <source>100</source>
+ <translation type="unfinished"></translation>
+ </message>
+ <message>
+ <source>Natural movement filter by Tom Brazier: Cancels higher frequency noise and the natural tendency for our heads to drift even when we think we are sitting still.</source>
+ <translation type="unfinished"></translation>
+ </message>
+ <message>
+ <source>Rotation</source>
+ <translation type="unfinished"></translation>
+ </message>
+ <message>
+ <source>Position</source>
+ <translation type="unfinished"></translation>
+ </message>
+ <message>
+ <source>Instructions: Set all sliders to minimum. Then for each of rotation and position: First, increase responsiveness until the filter only just cancels jerkiness for faster head movements. Second, increase drift speed until the filter only just cancels drift movement when your head is still.</source>
+ <translation type="unfinished"></translation>
+ </message>
+</context>
+<context>
+ <name>nmDll</name>
+ <message>
+ <source>NaturalMovement</source>
+ <translation type="unfinished"></translation>
+ </message>
+</context>
+</TS>
diff --git a/filter-nm/lang/stub.ts b/filter-nm/lang/stub.ts
new file mode 100644
index 000000000..3b9608046
--- /dev/null
+++ b/filter-nm/lang/stub.ts
@@ -0,0 +1,62 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE TS>
+<TS version="2.1" language="stub">
+<context>
+ <name>UICdialog_nm</name>
+ <message>
+ <source>Dialog</source>
+ <translation type="unfinished"></translation>
+ </message>
+ <message>
+ <source>°/s</source>
+ <translation type="unfinished"></translation>
+ </message>
+ <message>
+ <source>mm/s</source>
+ <translation type="unfinished"></translation>
+ </message>
+ <message>
+ <source>Responsiveness</source>
+ <translation type="unfinished"></translation>
+ </message>
+ <message>
+ <source>10.0</source>
+ <translation type="unfinished"></translation>
+ </message>
+ <message>
+ <source>Drift speeds</source>
+ <translation type="unfinished"></translation>
+ </message>
+ <message>
+ <source>50</source>
+ <translation type="unfinished"></translation>
+ </message>
+ <message>
+ <source>100</source>
+ <translation type="unfinished"></translation>
+ </message>
+ <message>
+ <source>Natural movement filter by Tom Brazier: Cancels higher frequency noise and the natural tendency for our heads to drift even when we think we are sitting still.</source>
+ <translation type="unfinished"></translation>
+ </message>
+ <message>
+ <source>Rotation</source>
+ <translation type="unfinished"></translation>
+ </message>
+ <message>
+ <source>Position</source>
+ <translation type="unfinished"></translation>
+ </message>
+ <message>
+ <source>Instructions: Set all sliders to minimum. Then for each of rotation and position: First, increase responsiveness until the filter only just cancels jerkiness for faster head movements. Second, increase drift speed until the filter only just cancels drift movement when your head is still.</source>
+ <translation type="unfinished"></translation>
+ </message>
+</context>
+<context>
+ <name>nmDll</name>
+ <message>
+ <source>NaturalMovement</source>
+ <translation type="unfinished"></translation>
+ </message>
+</context>
+</TS>
diff --git a/filter-nm/lang/zh_CN.ts b/filter-nm/lang/zh_CN.ts
new file mode 100644
index 000000000..92521e0fe
--- /dev/null
+++ b/filter-nm/lang/zh_CN.ts
@@ -0,0 +1,62 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE TS>
+<TS version="2.1" language="zh_CN">
+<context>
+ <name>UICdialog_nm</name>
+ <message>
+ <source>Dialog</source>
+ <translation type="unfinished"></translation>
+ </message>
+ <message>
+ <source>°/s</source>
+ <translation type="unfinished"></translation>
+ </message>
+ <message>
+ <source>mm/s</source>
+ <translation type="unfinished"></translation>
+ </message>
+ <message>
+ <source>Responsiveness</source>
+ <translation type="unfinished"></translation>
+ </message>
+ <message>
+ <source>10.0</source>
+ <translation type="unfinished"></translation>
+ </message>
+ <message>
+ <source>Drift speeds</source>
+ <translation type="unfinished"></translation>
+ </message>
+ <message>
+ <source>50</source>
+ <translation type="unfinished"></translation>
+ </message>
+ <message>
+ <source>100</source>
+ <translation type="unfinished"></translation>
+ </message>
+ <message>
+ <source>Natural movement filter by Tom Brazier: Cancels higher frequency noise and the natural tendency for our heads to drift even when we think we are sitting still.</source>
+ <translation type="unfinished"></translation>
+ </message>
+ <message>
+ <source>Rotation</source>
+ <translation type="unfinished"></translation>
+ </message>
+ <message>
+ <source>Position</source>
+ <translation type="unfinished"></translation>
+ </message>
+ <message>
+ <source>Instructions: Set all sliders to minimum. Then for each of rotation and position: First, increase responsiveness until the filter only just cancels jerkiness for faster head movements. Second, increase drift speed until the filter only just cancels drift movement when your head is still.</source>
+ <translation type="unfinished"></translation>
+ </message>
+</context>
+<context>
+ <name>nmDll</name>
+ <message>
+ <source>NaturalMovement</source>
+ <translation type="unfinished"></translation>
+ </message>
+</context>
+</TS>
generated by cgit v1.2.3 (git 2.46.0) at 2026-07-06 17:00:49 +0000