小明编程Leap Motion数据获取很简单，但我们在做项目时，往往希望将其完全抽象掉。我不想知道如何打开Leap Motion的，不想了解Leap运作机制，我只要Leap能给我数据，我处理就是了。之所以选择使用Qt，因为Qt越来越被广泛使用，并且自己工作也天天玩这个。但对于UDP，是第一次接触，这里先贡献第一版本代码，以后会改进。
2013-12-10 Ver0.9 粗陋版本 CSDN下载地址
先给出UDP接收端代码
.h
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#ifndef MAINWINDOW_H #define MAINWINDOW_H #include <QMainWindow> namespace Ui { class MainWindow; } class QUdpSocket; class MainWindow : public QMainWindow { Q_OBJECT public: explicit MainWindow(QWidget *parent = 0); ~MainWindow(); protected slots: void recvUdpData(); private: QUdpSocket *m_udpSocket; Ui::MainWindow *ui; }; #endif // MAINWINDOW_H |
.cpp
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#include "mainwindow.h" #include "ui_mainwindow.h" #include <QUdpSocket> #include <QDebug> MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWindow) { ui->setupUi(this); m_udpSocket = new QUdpSocket; m_udpSocket->bind(QHostAddress::LocalHost,8000); connect(m_udpSocket,SIGNAL(readyRead()),this,SLOT(recvUdpData())); } MainWindow::~MainWindow() { delete ui; } void MainWindow::recvUdpData() { char data[100]; m_udpSocket->readDatagram(data,100); qDebug()<<"udp receive : "<<data; if(ui->listWidget->count() > 50) { ui->listWidget->takeItem(ui->listWidget->count()-1); // ui->listWidget->clear(); // QListWidgetItem *pItem = ui->listWidget->item(ui->listWidget->count()-1); //ui->listWidget->removeItemWidget(pItem); } static int count = 0; ++count; if(count > 9999) { count = 0; } ui->listWidget->insertItem(0,QString("%1 ").arg(count,4,10,QChar('0')) + QString(data)); } |
下来时发送端（服务器）代码
.h
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#ifndef LEAPDATAWIDGET_H #define LEAPDATAWIDGET_H #include <QWidget> #include "Leap.h" using namespace Leap; namespace Ui { class CLeapDataWidget; } class QUdpSocket; class CLeapDataWidget : public QWidget,public Listener { Q_OBJECT public: explicit CLeapDataWidget(QWidget *parent = 0); ~CLeapDataWidget(); void BindController(Controller *control); protected slots: void sendFrameData(QByteArray array); void stopLeapMotionController(); private: Ui::CLeapDataWidget *ui; QUdpSocket *m_udpSocket; Controller *m_pController; virtual void onInit(const Controller &controller); virtual void onConnect(const Controller& controller); virtual void onDisconnect(const Controller &controller); virtual void onExit(const Controller &controller); virtual void onFrame(const Controller &controller); virtual void onFocusGained(const Controller &controller); virtual void onFocusLost(const Controller &controller); }; #endif // LEAPDATAWIDGET_H |
.cpp
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#include "LeapDataWidget.h" #include "ui_LeapDataWidget.h" #include <QDebug> #include <QUdpSocket> const qint16 DefaultSendPort = 8000; CLeapDataWidget::CLeapDataWidget(QWidget *parent) : QWidget(parent), ui(new Ui::CLeapDataWidget) { ui->setupUi(this); connect(ui->pushButton,SIGNAL(clicked()),this,SLOT(stopLeapMotionController())); m_udpSocket = new QUdpSocket; m_udpSocket->bind(QHostAddress::LocalHost,9000); } CLeapDataWidget::~CLeapDataWidget() { delete ui; } void CLeapDataWidget::BindController(Controller *control) { m_pController = control; } void CLeapDataWidget::sendFrameData(QByteArray array) { //qDebug()<<array; m_udpSocket -> writeDatagram(array,QHostAddress::LocalHost,DefaultSendPort); } void CLeapDataWidget::stopLeapMotionController() { m_pController->removeListener(*this); } void CLeapDataWidget::onInit(const Controller &controller) { controller.setPolicyFlags(Controller::POLICY_BACKGROUND_FRAMES); std::cout << "Initialized" << std::endl; } void CLeapDataWidget::onConnect(const Controller &controller) { std::cout << "Connected" << std::endl; controller.enableGesture(Gesture::TYPE_CIRCLE); controller.enableGesture(Gesture::TYPE_KEY_TAP); controller.enableGesture(Gesture::TYPE_SCREEN_TAP); controller.enableGesture(Gesture::TYPE_SWIPE); } void CLeapDataWidget::onDisconnect(const Controller &controller) { //Note: not dispatched when running in a debugger. std::cout << "Disconnected" << std::endl; } void CLeapDataWidget::onExit(const Controller &controller) { std::cout << "Exited" << std::endl; } void CLeapDataWidget::onFrame(const Controller &controller) { // Get the most recent frame and report some basic information QCoreApplication::processEvents(); // emit sigTest(); const Frame frame = controller.frame(); // std::cout << "Frame id: " << frame.id() // << ", timestamp: " << frame.timestamp() // << ", hands: " << frame.hands().count() // << ", fingers: " << frame.fingers().count() // << ", tools: " << frame.tools().count() // << ", gestures: " << frame.gestures().count() << std::endl; if (!frame.hands().isEmpty()) { // Get the first hand const Hand hand = frame.hands()[0]; // Check if the hand has any fingers const FingerList fingers = hand.fingers(); if (!fingers.isEmpty()) { // Calculate the hand's average finger tip position Vector avgPos; for (int i = 0; i < fingers.count(); ++i) { //avgPos += fingers[i].tipPosition(); QString tip_pos_str = QString("Start id=%1 x=%2 y=%3 End\n").arg((int)fingers[i].id()).arg((int)fingers[i].tipPosition().x).arg((int)fingers[i].tipPosition().y); QByteArray array = qPrintable(tip_pos_str); sendFrameData(array); // qDebug()<<fingers[i].tipPosition().x; // qDebug()<<tip_pos_str; } // avgPos /= (float)fingers.count(); // std::cout << "Hand has " << fingers.count() // << " fingers, average finger tip position" << avgPos << std::endl; } // Get the hand's sphere radius and palm position // std::cout << "Hand sphere radius: " << hand.sphereRadius() // << " mm, palm position: " << hand.palmPosition() << std::endl; // Get the hand's normal vector and direction // const Vector normal = hand.palmNormal(); // const Vector direction = hand.direction(); // Calculate the hand's pitch, roll, and yaw angles // std::cout << "Hand pitch: " << direction.pitch() * RAD_TO_DEG << " degrees, " // << "roll: " << normal.roll() * RAD_TO_DEG << " degrees, " // << "yaw: " << direction.yaw() * RAD_TO_DEG << " degrees" << std::endl; } // Get gestures const GestureList gestures = frame.gestures(); for (int g = 0; g < gestures.count(); ++g) { Gesture gesture = gestures[g]; switch (gesture.type()) { case Gesture::TYPE_CIRCLE: { CircleGesture circle = gesture; std::string clockwiseness; if (circle.pointable().direction().angleTo(circle.normal()) <= PI/4) { clockwiseness = "clockwise"; } else { clockwiseness = "counterclockwise"; } // Calculate angle swept since last frame float sweptAngle = 0; if (circle.state() != Gesture::STATE_START) { CircleGesture previousUpdate = CircleGesture(controller.frame(1).gesture(circle.id())); sweptAngle = (circle.progress() - previousUpdate.progress()) * 2 * PI; } // std::cout << "Circle id: " << gesture.id() // << ", state: " << gesture.state() // << ", progress: " << circle.progress() // << ", radius: " << circle.radius() // << ", angle " << sweptAngle * RAD_TO_DEG // << ", " << clockwiseness << std::endl; QString circle_gesture = QString("Gesture=Circure"); QByteArray array = qPrintable(circle_gesture); sendFrameData(array); break; } case Gesture::TYPE_SWIPE: { SwipeGesture swipe = gesture; // std::cout << "Swipe id: " << gesture.id() // << ", state: " << gesture.state() // << ", direction: " << swipe.direction() // << ", speed: " << swipe.speed() << std::endl; QString swipe_gesture = QString("Gesture=Swipe,Direction=(%1,%2),Speed=%3").arg(swipe.direction().x).arg(swipe.direction().y).arg(swipe.speed() ); QByteArray array = qPrintable(swipe_gesture); sendFrameData(array); break; } case Gesture::TYPE_KEY_TAP: { KeyTapGesture tap = gesture; // std::cout << "Key Tap id: " << gesture.id() // << ", state: " << gesture.state() // << ", position: " << tap.position() // << ", direction: " << tap.direction()<< std::endl; QString tap_gesture = QString("Gesture=Keytap,Position=(%1,%2)").arg(tap.position().x).arg(tap.position().y); QByteArray array = qPrintable(tap_gesture); sendFrameData(array); break; } case Gesture::TYPE_SCREEN_TAP: { ScreenTapGesture screentap = gesture; // std::cout << "Screen Tap id: " << gesture.id() // << ", state: " << gesture.state() // << ", position: " << screentap.position() // << ", direction: " << screentap.direction()<< std::endl; QString tap_gesture = QString("Gesture=Sceentap,Position=(%1,%2)").arg(screentap.position().x).arg(screentap.position().y); QByteArray array = qPrintable(tap_gesture); sendFrameData(array); break; } default: std::cout << "Unknown gesture type." << std::endl; break; } } if (!frame.hands().isEmpty() || !gestures.isEmpty()) { std::cout << std::endl; } } void CLeapDataWidget::onFocusGained(const Controller &controller) { std::cout << "Focus Gained" << std::endl; } void CLeapDataWidget::onFocusLost(const Controller &controller) { std::cout << "Focus Lost" << std::endl; } |
main.cpp
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#include "LeapDataWidget.h" #include <QApplication> #include <QDebug> #include <Windows.h> #include <iostream> int main(int argc, char *argv[]) { QApplication a(argc, argv); CLeapDataWidget w; w.move(0,0); w.show(); // Create a sample listener and controller //SampleListener listener; Controller controller; w.BindController(&controller); // Have the sample listener receive events from the controller controller.addListener(w); std::cout << "Press Enter to quit..." << std::endl; std::cin.get(); // controller.removeListener(w); return a.exec(); } |
特别的.pro文件（如何在Qt中导入Leap.lib，参照CSDN文章）
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#------------------------------------------------- # # Project created by QtCreator 2013-12-06T00:31:59 # #------------------------------------------------- LIBS += -LF:\Softs\Qt\Qt-Projects\QtForLeapMotion\lib -lLeap #LIBS += -Llib -lLeap QT += core gui QT += network greaterThan(QT_MAJOR_VERSION, 4): QT += widgets TARGET = QtForLeapMotion TEMPLATE = app SOURCES += main.cpp\ LeapDataWidget.cpp HEADERS += LeapDataWidget.h \ LeapMath.h \ Leap.h FORMS += LeapDataWidget.ui |
