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Merge pull request #1951 from wwylele/motion-sensor

Emulate motion sensor in frontend
This commit is contained in:
bunnei 2017-01-07 12:39:20 -05:00 committed by GitHub
commit 7cfe3ef046
14 changed files with 321 additions and 16 deletions

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@ -19,17 +19,23 @@
void EmuWindow_SDL2::OnMouseMotion(s32 x, s32 y) {
TouchMoved((unsigned)std::max(x, 0), (unsigned)std::max(y, 0));
motion_emu->Tilt(x, y);
}
void EmuWindow_SDL2::OnMouseButton(u32 button, u8 state, s32 x, s32 y) {
if (button != SDL_BUTTON_LEFT)
return;
if (button == SDL_BUTTON_LEFT) {
if (state == SDL_PRESSED) {
TouchPressed((unsigned)std::max(x, 0), (unsigned)std::max(y, 0));
} else {
TouchReleased();
}
} else if (button == SDL_BUTTON_RIGHT) {
if (state == SDL_PRESSED) {
motion_emu->BeginTilt(x, y);
} else {
motion_emu->EndTilt();
}
}
}
void EmuWindow_SDL2::OnKeyEvent(int key, u8 state) {
@ -54,6 +60,7 @@ EmuWindow_SDL2::EmuWindow_SDL2() {
keyboard_id = KeyMap::NewDeviceId();
ReloadSetKeymaps();
motion_emu = std::make_unique<Motion::MotionEmu>(*this);
SDL_SetMainReady();
@ -109,6 +116,7 @@ EmuWindow_SDL2::EmuWindow_SDL2() {
EmuWindow_SDL2::~EmuWindow_SDL2() {
SDL_GL_DeleteContext(gl_context);
SDL_Quit();
motion_emu = nullptr;
}
void EmuWindow_SDL2::SwapBuffers() {

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@ -4,8 +4,10 @@
#pragma once
#include <memory>
#include <utility>
#include "core/frontend/emu_window.h"
#include "core/frontend/motion_emu.h"
struct SDL_Window;
@ -61,4 +63,7 @@ private:
/// Device id of keyboard for use with KeyMap
int keyboard_id;
/// Motion sensors emulation
std::unique_ptr<Motion::MotionEmu> motion_emu;
};

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@ -191,6 +191,7 @@ qreal GRenderWindow::windowPixelRatio() {
}
void GRenderWindow::closeEvent(QCloseEvent* event) {
motion_emu = nullptr;
emit Closed();
QWidget::closeEvent(event);
}
@ -204,11 +205,13 @@ void GRenderWindow::keyReleaseEvent(QKeyEvent* event) {
}
void GRenderWindow::mousePressEvent(QMouseEvent* event) {
if (event->button() == Qt::LeftButton) {
auto pos = event->pos();
if (event->button() == Qt::LeftButton) {
qreal pixelRatio = windowPixelRatio();
this->TouchPressed(static_cast<unsigned>(pos.x() * pixelRatio),
static_cast<unsigned>(pos.y() * pixelRatio));
} else if (event->button() == Qt::RightButton) {
motion_emu->BeginTilt(pos.x(), pos.y());
}
}
@ -217,11 +220,14 @@ void GRenderWindow::mouseMoveEvent(QMouseEvent* event) {
qreal pixelRatio = windowPixelRatio();
this->TouchMoved(std::max(static_cast<unsigned>(pos.x() * pixelRatio), 0u),
std::max(static_cast<unsigned>(pos.y() * pixelRatio), 0u));
motion_emu->Tilt(pos.x(), pos.y());
}
void GRenderWindow::mouseReleaseEvent(QMouseEvent* event) {
if (event->button() == Qt::LeftButton)
this->TouchReleased();
else if (event->button() == Qt::RightButton)
motion_emu->EndTilt();
}
void GRenderWindow::ReloadSetKeymaps() {
@ -279,11 +285,13 @@ void GRenderWindow::OnMinimalClientAreaChangeRequest(
}
void GRenderWindow::OnEmulationStarting(EmuThread* emu_thread) {
motion_emu = std::make_unique<Motion::MotionEmu>(*this);
this->emu_thread = emu_thread;
child->DisablePainting();
}
void GRenderWindow::OnEmulationStopping() {
motion_emu = nullptr;
emu_thread = nullptr;
child->EnablePainting();
}

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@ -11,6 +11,7 @@
#include <QThread>
#include "common/thread.h"
#include "core/frontend/emu_window.h"
#include "core/frontend/motion_emu.h"
class QKeyEvent;
class QScreen;
@ -156,6 +157,9 @@ private:
EmuThread* emu_thread;
/// Motion sensors emulation
std::unique_ptr<Motion::MotionEmu> motion_emu;
protected:
void showEvent(QShowEvent* event) override;
};

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@ -46,6 +46,7 @@ set(HEADERS
microprofileui.h
platform.h
profiler_reporting.h
quaternion.h
scm_rev.h
scope_exit.h
string_util.h

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@ -10,6 +10,8 @@
namespace MathUtil {
static constexpr float PI = 3.14159265f;
inline bool IntervalsIntersect(unsigned start0, unsigned length0, unsigned start1,
unsigned length1) {
return (std::max(start0, start1) < std::min(start0 + length0, start1 + length1));

44
src/common/quaternion.h Normal file
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@ -0,0 +1,44 @@
// Copyright 2016 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include "common/vector_math.h"
namespace Math {
template <typename T>
class Quaternion {
public:
Math::Vec3<T> xyz;
T w;
Quaternion<decltype(-T{})> Inverse() const {
return {-xyz, w};
}
Quaternion<decltype(T{} + T{})> operator+(const Quaternion& other) const {
return {xyz + other.xyz, w + other.w};
}
Quaternion<decltype(T{} - T{})> operator-(const Quaternion& other) const {
return {xyz - other.xyz, w - other.w};
}
Quaternion<decltype(T{} * T{} - T{} * T{})> operator*(const Quaternion& other) const {
return {xyz * other.w + other.xyz * w + Cross(xyz, other.xyz),
w * other.w - Dot(xyz, other.xyz)};
}
};
template <typename T>
auto QuaternionRotate(const Quaternion<T>& q, const Math::Vec3<T>& v) {
return v + 2 * Cross(q.xyz, Cross(q.xyz, v) + v * q.w);
}
inline Quaternion<float> MakeQuaternion(const Math::Vec3<float>& axis, float angle) {
return {axis * std::sin(angle / 2), std::cos(angle / 2)};
}
} // namspace Math

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@ -4,6 +4,7 @@
#pragma once
#include <chrono>
#include <condition_variable>
#include <cstddef>
#include <mutex>
@ -54,6 +55,15 @@ public:
is_set = false;
}
template <class Clock, class Duration>
bool WaitUntil(const std::chrono::time_point<Clock, Duration>& time) {
std::unique_lock<std::mutex> lk(mutex);
if (!condvar.wait_until(lk, time, [this] { return is_set; }))
return false;
is_set = false;
return true;
}
void Reset() {
std::unique_lock<std::mutex> lk(mutex);
// no other action required, since wait loops on the predicate and any lingering signal will

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@ -186,6 +186,18 @@ Vec2<T> operator*(const V& f, const Vec2<T>& vec) {
typedef Vec2<float> Vec2f;
template <>
inline float Vec2<float>::Length() const {
return std::sqrt(x * x + y * y);
}
template <>
inline float Vec2<float>::Normalize() {
float length = Length();
*this /= length;
return length;
}
template <typename T>
class Vec3 {
public:
@ -388,6 +400,13 @@ inline Vec3<float> Vec3<float>::Normalized() const {
return *this / Length();
}
template <>
inline float Vec3<float>::Normalize() {
float length = Length();
*this /= length;
return length;
}
typedef Vec3<float> Vec3f;
template <typename T>

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@ -31,6 +31,7 @@ set(SRCS
file_sys/savedata_archive.cpp
frontend/emu_window.cpp
frontend/key_map.cpp
frontend/motion_emu.cpp
gdbstub/gdbstub.cpp
hle/config_mem.cpp
hle/applets/applet.cpp
@ -202,6 +203,7 @@ set(HEADERS
file_sys/savedata_archive.h
frontend/emu_window.h
frontend/key_map.h
frontend/motion_emu.h
gdbstub/gdbstub.h
hle/config_mem.h
hle/function_wrappers.h

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@ -5,6 +5,7 @@
#include <algorithm>
#include <cmath>
#include "common/assert.h"
#include "common/profiler_reporting.h"
#include "core/frontend/emu_window.h"
#include "core/frontend/key_map.h"
#include "video_core/video_core.h"
@ -89,6 +90,30 @@ void EmuWindow::TouchMoved(unsigned framebuffer_x, unsigned framebuffer_y) {
TouchPressed(framebuffer_x, framebuffer_y);
}
void EmuWindow::AccelerometerChanged(float x, float y, float z) {
constexpr float coef = 512;
std::lock_guard<std::mutex> lock(accel_mutex);
// TODO(wwylele): do a time stretch as it in GyroscopeChanged
// The time stretch formula should be like
// stretched_vector = (raw_vector - gravity) * stretch_ratio + gravity
accel_x = x * coef;
accel_y = y * coef;
accel_z = z * coef;
}
void EmuWindow::GyroscopeChanged(float x, float y, float z) {
constexpr float FULL_FPS = 60;
float coef = GetGyroscopeRawToDpsCoefficient();
float stretch =
FULL_FPS / Common::Profiling::GetTimingResultsAggregator()->GetAggregatedResults().fps;
std::lock_guard<std::mutex> lock(gyro_mutex);
gyro_x = x * coef * stretch;
gyro_y = y * coef * stretch;
gyro_z = z * coef * stretch;
}
void EmuWindow::UpdateCurrentFramebufferLayout(unsigned width, unsigned height) {
Layout::FramebufferLayout layout;
switch (Settings::values.layout_option) {

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@ -4,6 +4,7 @@
#pragma once
#include <mutex>
#include <tuple>
#include <utility>
#include "common/common_types.h"
@ -92,6 +93,27 @@ public:
*/
void TouchMoved(unsigned framebuffer_x, unsigned framebuffer_y);
/**
* Signal accelerometer state has changed.
* @param x X-axis accelerometer value
* @param y Y-axis accelerometer value
* @param z Z-axis accelerometer value
* @note all values are in unit of g (gravitational acceleration).
* e.g. x = 1.0 means 9.8m/s^2 in x direction.
* @see GetAccelerometerState for axis explanation.
*/
void AccelerometerChanged(float x, float y, float z);
/**
* Signal gyroscope state has changed.
* @param x X-axis accelerometer value
* @param y Y-axis accelerometer value
* @param z Z-axis accelerometer value
* @note all values are in deg/sec.
* @see GetGyroscopeState for axis explanation.
*/
void GyroscopeChanged(float x, float y, float z);
/**
* Gets the current pad state (which buttons are pressed).
* @note This should be called by the core emu thread to get a state set by the window thread.
@ -134,12 +156,11 @@ public:
* 1 unit of return value = 1/512 g (measured by hw test),
* where g is the gravitational acceleration (9.8 m/sec2).
* @note This should be called by the core emu thread to get a state set by the window thread.
* @todo Implement accelerometer input in front-end.
* @return std::tuple of (x, y, z)
*/
std::tuple<s16, s16, s16> GetAccelerometerState() const {
// stubbed
return std::make_tuple(0, -512, 0);
std::tuple<s16, s16, s16> GetAccelerometerState() {
std::lock_guard<std::mutex> lock(accel_mutex);
return std::make_tuple(accel_x, accel_y, accel_z);
}
/**
@ -153,12 +174,11 @@ public:
* 1 unit of return value = (1/coef) deg/sec,
* where coef is the return value of GetGyroscopeRawToDpsCoefficient().
* @note This should be called by the core emu thread to get a state set by the window thread.
* @todo Implement gyroscope input in front-end.
* @return std::tuple of (x, y, z)
*/
std::tuple<s16, s16, s16> GetGyroscopeState() const {
// stubbed
return std::make_tuple(0, 0, 0);
std::tuple<s16, s16, s16> GetGyroscopeState() {
std::lock_guard<std::mutex> lock(gyro_mutex);
return std::make_tuple(gyro_x, gyro_y, gyro_z);
}
/**
@ -216,6 +236,12 @@ protected:
circle_pad_x = 0;
circle_pad_y = 0;
touch_pressed = false;
accel_x = 0;
accel_y = -512;
accel_z = 0;
gyro_x = 0;
gyro_y = 0;
gyro_z = 0;
}
virtual ~EmuWindow() {}
@ -281,6 +307,16 @@ private:
s16 circle_pad_x; ///< Circle pad X-position in native 3DS pixel coordinates (-156 - 156)
s16 circle_pad_y; ///< Circle pad Y-position in native 3DS pixel coordinates (-156 - 156)
std::mutex accel_mutex;
s16 accel_x; ///< Accelerometer X-axis value in native 3DS units
s16 accel_y; ///< Accelerometer Y-axis value in native 3DS units
s16 accel_z; ///< Accelerometer Z-axis value in native 3DS units
std::mutex gyro_mutex;
s16 gyro_x; ///< Gyroscope X-axis value in native 3DS units
s16 gyro_y; ///< Gyroscope Y-axis value in native 3DS units
s16 gyro_z; ///< Gyroscope Z-axis value in native 3DS units
/**
* Clip the provided coordinates to be inside the touchscreen area.
*/

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@ -0,0 +1,89 @@
// Copyright 2016 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#include "common/math_util.h"
#include "common/quaternion.h"
#include "core/frontend/emu_window.h"
#include "core/frontend/motion_emu.h"
namespace Motion {
static constexpr int update_millisecond = 100;
static constexpr auto update_duration =
std::chrono::duration_cast<std::chrono::steady_clock::duration>(
std::chrono::milliseconds(update_millisecond));
MotionEmu::MotionEmu(EmuWindow& emu_window)
: motion_emu_thread(&MotionEmu::MotionEmuThread, this, std::ref(emu_window)) {}
MotionEmu::~MotionEmu() {
if (motion_emu_thread.joinable()) {
shutdown_event.Set();
motion_emu_thread.join();
}
}
void MotionEmu::MotionEmuThread(EmuWindow& emu_window) {
auto update_time = std::chrono::steady_clock::now();
Math::Quaternion<float> q = MakeQuaternion(Math::Vec3<float>(), 0);
Math::Quaternion<float> old_q;
while (!shutdown_event.WaitUntil(update_time)) {
update_time += update_duration;
old_q = q;
{
std::lock_guard<std::mutex> guard(tilt_mutex);
// Find the quaternion describing current 3DS tilting
q = MakeQuaternion(Math::MakeVec(-tilt_direction.y, 0.0f, tilt_direction.x),
tilt_angle);
}
auto inv_q = q.Inverse();
// Set the gravity vector in world space
auto gravity = Math::MakeVec(0.0f, -1.0f, 0.0f);
// Find the angular rate vector in world space
auto angular_rate = ((q - old_q) * inv_q).xyz * 2;
angular_rate *= 1000 / update_millisecond / MathUtil::PI * 180;
// Transform the two vectors from world space to 3DS space
gravity = QuaternionRotate(inv_q, gravity);
angular_rate = QuaternionRotate(inv_q, angular_rate);
// Update the sensor state
emu_window.AccelerometerChanged(gravity.x, gravity.y, gravity.z);
emu_window.GyroscopeChanged(angular_rate.x, angular_rate.y, angular_rate.z);
}
}
void MotionEmu::BeginTilt(int x, int y) {
mouse_origin = Math::MakeVec(x, y);
is_tilting = true;
}
void MotionEmu::Tilt(int x, int y) {
constexpr float SENSITIVITY = 0.01f;
auto mouse_move = Math::MakeVec(x, y) - mouse_origin;
if (is_tilting) {
std::lock_guard<std::mutex> guard(tilt_mutex);
if (mouse_move.x == 0 && mouse_move.y == 0) {
tilt_angle = 0;
} else {
tilt_direction = mouse_move.Cast<float>();
tilt_angle = MathUtil::Clamp(tilt_direction.Normalize() * SENSITIVITY, 0.0f,
MathUtil::PI * 0.5f);
}
}
}
void MotionEmu::EndTilt() {
std::lock_guard<std::mutex> guard(tilt_mutex);
tilt_angle = 0;
is_tilting = false;
}
} // namespace Motion

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@ -0,0 +1,52 @@
// Copyright 2016 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include "common/thread.h"
#include "common/vector_math.h"
class EmuWindow;
namespace Motion {
class MotionEmu final {
public:
MotionEmu(EmuWindow& emu_window);
~MotionEmu();
/**
* Signals that a motion sensor tilt has begun.
* @param x the x-coordinate of the cursor
* @param y the y-coordinate of the cursor
*/
void BeginTilt(int x, int y);
/**
* Signals that a motion sensor tilt is occurring.
* @param x the x-coordinate of the cursor
* @param y the y-coordinate of the cursor
*/
void Tilt(int x, int y);
/**
* Signals that a motion sensor tilt has ended.
*/
void EndTilt();
private:
Math::Vec2<int> mouse_origin;
std::mutex tilt_mutex;
Math::Vec2<float> tilt_direction;
float tilt_angle = 0;
bool is_tilting = false;
Common::Event shutdown_event;
std::thread motion_emu_thread;
void MotionEmuThread(EmuWindow& emu_window);
};
} // namespace Motion