middleware/src/Tracking/KinectMain.cs
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/*
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 * Projet : KINECT PROJECTS
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 * Module : MIDDLEWARE
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 * Sous-Module : Tracking
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 * Classe : KinectMain
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 * 
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 * Auteur : alexandre.bastien@iri.centrepompidou.fr
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 * 
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 * Fonctionnalités : Récupère les trames de données de la Kinect, les squelettes détectés via le SDK 1.0 de Microsoft.
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 * Interprète ces trames de façon à afficher le flux vidéo couleurs, et récupérer la distance de l'utilisateur et les
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 * noeuds de son squelette. Lance des événements lorsque la main gauche/droite entre dans/quitte le champ.
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 * Envoie des données au sous-module de debug de manière a afficher un retour visuel sur la position de l'utilisateur,
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 * son squelette, la détection de ses mains.
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 */
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Windows;
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using System.Windows.Controls;
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using System.Windows.Data;
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using System.Windows.Documents;
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using System.Windows.Input;
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using System.Windows.Media;
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using System.Windows.Media.Imaging;
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using System.Windows.Navigation;
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using System.Windows.Shapes;
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using System.Drawing;
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using System.Windows.Media.Media3D;
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using Microsoft.Kinect;
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using Coding4Fun.Kinect.Wpf;
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using System.ComponentModel;
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using Trakers.Debug;
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using Tuio;
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using Trakers.Communication;
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using System.IO;
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using Trakers.Tracking.Gestures;
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using Trakers.Tracking.Events;
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using System.Configuration;
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using Kinect.Toolbox;
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namespace Trakers.Tracking
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{
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    //Il s'agit des fonctions permettant d'appeler les fonctions des événements Main droite/gauche entre/quitte le champ.
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    public delegate void LeftHandTrackedHandler(object o, LeftHandTrackedEventArgs e);
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    public delegate void RightHandTrackedHandler(object o, RightHandTrackedEventArgs e);
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    public delegate void LeftHandQuitHandler(object o, LeftHandQuitEventArgs e);
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    public delegate void RightHandQuitHandler(object o, RightHandQuitEventArgs e);
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    //Il s'agit des fonctions permettant d'appeler les fonctions des événements Swipe left/right/up/down.
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    public delegate void SwipeHandler(object o, SwipeEventArgs e);
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    public class KinectMain
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    {
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        //Fenêtre de debug.
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        private Debug.DebugWindow debug;
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        //Squelettes (Il y en a 6 par défaut).
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        private Skeleton[] skeletons;
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        //Caméra infrarouge (sensor) de la Kinect.
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        private KinectSensor kinectSensor;
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        //Détecteur de gestes.
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        private SwipeDetector swipeDetector;
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        //Distances min/max délimitant le champ de recherche.
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        private float minDistHands;
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        private float maxDistHands;
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        //Serveur TUIO pour la connexion du Middleware vers le Front Atelier.
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        private Server server;
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        //Les événements des mains pour la recherche.
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        public static event LeftHandTrackedHandler LeftHandTrackedEvent;
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        public static event RightHandTrackedHandler RightHandTrackedEvent;
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        public static event LeftHandQuitHandler LeftHandQuitEvent;
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        public static event RightHandQuitHandler RightHandQuitEvent;
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        //Les événements swipe.
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        public static event SwipeHandler SwipeEvent;
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        //Voici les ID des noeuds d'un squelette.
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        private int hipCenterID = 0, spineID = 1, shoulderCenterID = 2, headID = 3;
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        private int shoulderLeftID = 4, elbowLeftID = 5, wristLeftID = 6, handLeftID = 7;
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        private int shoulderRightID = 8, elbowRightID = 9, wristRightID = 10, handRightID = 11;
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        private int hipLeftID = 12, kneeLeftID = 13, ankleLeftID = 14, footLeftID = 15;
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        private int hipRightID = 16, kneeRightID = 17, ankleRightID = 18, footRightID = 19;
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        /*
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        *  Initialisation de la classe principale.
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        *  Affiche l'écran de debug dans lequel on voit la distance à la Kinect,
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        *  les mains détectées et le squelette de l'utilisateur.
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        */
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        public KinectMain()
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        {
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            //On crée la fenêtre de debug.
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            debug = new Debug.DebugWindow(this);
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            //On crée le détecteur de gestes.
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            swipeDetector = new SwipeDetector();
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            //On tente de charger les paramètres du fichier params.ini.
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            //Si on n'y arrive pas, on affiche une erreur et on charge les paramètres par défaut.
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            if (!loadParameters())
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            {
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                debug.ExceptionLbl.Content = "Impossible de charger les paramètres. Paramètres par défaut.";
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                //Distances de détection des mains par défaut pour la recherche (ici de 1m à 2m de la Kinect).
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                minDistHands = (float)1.0;
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                maxDistHands = (float)1.5;
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            }
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            else if (maxDistHands <= 0 || minDistHands <= 0 || maxDistHands > 4 || minDistHands > 4 || minDistHands >= maxDistHands)
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            {
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                debug.ExceptionLbl.Content = "Paramètres incorrects. Paramètres par défaut.";
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                //Distances de détection des mains par défaut pour la recherche (ici de 1m à 2m de la Kinect).
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                minDistHands = (float)1.0;
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                maxDistHands = (float)1.5;
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            }
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            //On affiche la fenêtre de debug.
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            try
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            {
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                debug.ShowDialog();
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            }
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            catch(Exception){}
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        }
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        /*
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        *  Initialisation du sensor de la Kinect.
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        */
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        public void KinectInitialization()
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        {
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            try
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            {
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                //On sélectionne la première kinect détectée.
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                kinectSensor = KinectSensor.KinectSensors.FirstOrDefault(s => s.Status == KinectStatus.Connected);
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                //La caméra couleur est activée avec une résolution 640x480 et un framerate de 30 FPS.
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                kinectSensor.ColorStream.Enable(ColorImageFormat.RgbResolution640x480Fps30);
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                //La caméra de profondeur est activée.
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                kinectSensor.DepthStream.Enable();
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                //Le squelette est activé.
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                kinectSensor.SkeletonStream.Enable();
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                //Quand le Middleware reçoit des trames de la Kinect, on va dans cette fonction.
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                kinectSensor.AllFramesReady += new EventHandler<AllFramesReadyEventArgs>(AllFramesReady);
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                //On démarre la Kinect.
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                kinectSensor.Start();
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                debug.ExceptionLbl.Content = "";
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            }
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            catch (System.Exception)
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            {
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                debug.ExceptionLbl.Content = "Kinect non connectée.";
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            }
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            //Pour les événements main gauche/droite entre dans/quitte le champ, on a 4 listeners.
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            //Fonction appelée lorsque la main gauche entre dans le champ de recherche.
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            LeftHandTrackedListener leftHandTrackedListener = new LeftHandTrackedListener();
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            LeftHandTrackedEvent += new LeftHandTrackedHandler(leftHandTrackedListener.ShowOnScreen);
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            //Fonction appelée lorsque la main droite entre dans le champ de recherche.
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            RightHandTrackedListener rightHandTrackedListener = new RightHandTrackedListener();
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            RightHandTrackedEvent += new RightHandTrackedHandler(rightHandTrackedListener.ShowOnScreen);
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            //Fonction appelée lorsque la main gauche quitte le champ de recherche.
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            LeftHandQuitListener leftHandQuitListener = new LeftHandQuitListener();
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            LeftHandQuitEvent += new LeftHandQuitHandler(leftHandQuitListener.ShowOnScreen);
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            //Fonction appelée lorsque la main droite quitte le champ de recherche.
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            RightHandQuitListener rightHandQuitListener = new RightHandQuitListener();
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            RightHandQuitEvent += new RightHandQuitHandler(rightHandQuitListener.ShowOnScreen);
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            //Fonction appelée lorsque l'utilisateur effectue un swipe right.
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            SwipeEventListener swipeListener = new SwipeEventListener();
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            SwipeEvent += new SwipeHandler(swipeListener.ShowOnScreen);
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            //On connecte le serveur à l'adresse locale sur le port 80.
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            server = new Server("127.0.0.1", 80);
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        }
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        /*
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        *  Fermeture du sensor de la Kinect.
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        */
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        public void KinectClose()
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        {
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            try
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            {
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                //On stoppe la Kinect.
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                kinectSensor.Stop();
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                //On met a zero l'image d'affichage et le serveur.
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                debug.DebugImage.Source = null;
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                //server = null;
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                debug.ExceptionLbl.Content = "";
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            }
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            catch (System.Exception)
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            {
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                debug.ExceptionLbl.Content = "Kinect non connectée.";
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            }
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        }
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        /*
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        *  Récupère le premier squelette.
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        */
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        Skeleton GetFirstSkeleton(AllFramesReadyEventArgs e)
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        {
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            using (SkeletonFrame skeletonFrameData = e.OpenSkeletonFrame())
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            {
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                if (skeletonFrameData == null)
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                    return null;
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                if ((skeletons == null) || (skeletons.Length != skeletonFrameData.SkeletonArrayLength))
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                    skeletons = new Skeleton[skeletonFrameData.SkeletonArrayLength];
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                skeletonFrameData.CopySkeletonDataTo(skeletons);
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                //On obtient le premier skelette.
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                Skeleton first = (from s in skeletons where s.TrackingState == SkeletonTrackingState.Tracked select s).FirstOrDefault();
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                return first;
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            }
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        }
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        /*
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        *  Récupère le squelette le plus proche.
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        */
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        Skeleton GetNearestSkeleton(AllFramesReadyEventArgs e)
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        {
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            using (SkeletonFrame skeletonFrameData = e.OpenSkeletonFrame())
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            {
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                if (skeletonFrameData == null)
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                    return null;
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                if ((skeletons == null) || (skeletons.Length != skeletonFrameData.SkeletonArrayLength))
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                    skeletons = new Skeleton[skeletonFrameData.SkeletonArrayLength];
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                skeletonFrameData.CopySkeletonDataTo(skeletons);
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                Skeleton s;
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                float minDist = (float)-1.0;
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                int minID = 0;
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                //Pour tous les squelettes.
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                for(int i = 0 ; i < skeletons.Count() ; i++)
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                {
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                    s = skeletons.ElementAt(i);
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                    //S'il est tracké.
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                    if(s.TrackingState == SkeletonTrackingState.Tracked)
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                    {
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                        //On récupère sa position et on obtient la distance min et l'ID du squelette qui est à la distance min.
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                        float dist = skeletons.ElementAt(i).Position.Z;
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                        if (minDist == -1)
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                        {
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                            minDist = dist;
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                            minID = i;
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                        }
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                        else if(minDist > dist)
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                        {
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                            minDist = dist;
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                            minID = i;
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                        }
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                    }
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                }
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                //On renvoie le skelette le plus proche.
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                return skeletons.ElementAt(minID);
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            }
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        }
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        /*
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        *  Récupère le squelette le plus proche.
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        */
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        private void AllFramesReady(object sender, AllFramesReadyEventArgs e)
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        {
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            //On ne calcule rien si la fenêtre de debug se ferme.
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            if (debug.isClosing())
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                return;
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            //On met à jour la vidéo de debug.
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            debug.RefreshVideo(e);
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            //On récupère le premier squelette tracké.
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            //Skeleton first = GetFirstSkeleton(e);
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            //On récupère le plus proche squelette tracké.
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            Skeleton first = GetNearestSkeleton(e);
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            //Si celui-ci n’est pas nul
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            if (first == null)
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                return;
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            //Si ce squelette est tracké (donc suivi et reconnu par la camera)
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            if (first.TrackingState == SkeletonTrackingState.Tracked)
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            {
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                //Ensemble des noeuds du squelette.
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                Joint hipCenter = getJoint(first, hipCenterID), spine = getJoint(first, spineID), shoulderCenter = getJoint(first, shoulderCenterID), head = getJoint(first, headID);
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                Joint shoulderLeft = getJoint(first, shoulderLeftID), elbowLeft = getJoint(first, elbowLeftID), wristLeft = getJoint(first, wristLeftID), handLeft = getJoint(first, handLeftID);
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                Joint shoulderRight = getJoint(first, shoulderRightID), elbowRight = getJoint(first, elbowRightID), wristRight = getJoint(first, wristRightID), handRight = getJoint(first, handRightID);
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                Joint hipLeft = getJoint(first, hipLeftID), kneeLeft = getJoint(first, kneeLeftID), ankleLeft = getJoint(first, ankleLeftID), footLeft = getJoint(first, footLeftID);
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                Joint hipRight = getJoint(first, hipRightID), kneeRight = getJoint(first, kneeRightID), ankleRight = getJoint(first, ankleRightID), footRight = getJoint(first, footRightID);
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                //On construit l'historique des postures.
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                /*List<Joint> joints = new List<Joint>();
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                joints.Clear();
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                joints.Add(footRight);
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                joints.Add(ankleRight);
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                joints.Add(kneeRight);
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                joints.Add(hipRight);
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                joints.Add(footLeft);
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                joints.Add(ankleLeft);
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                joints.Add(kneeLeft);
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                joints.Add(hipLeft);
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                joints.Add(handRight);
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                joints.Add(wristRight);
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                joints.Add(elbowRight);
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                joints.Add(shoulderRight);
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                joints.Add(handLeft);
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                joints.Add(wristLeft);
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                joints.Add(elbowLeft);
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                joints.Add(shoulderLeft);
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                joints.Add(head);
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                joints.Add(shoulderCenter);
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                joints.Add(spine);
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                joints.Add(hipCenter);
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                swipeDetector.UpdateSkeletonHistory(joints);*/
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   317
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                SkeletonDisplayManager sdm = new SkeletonDisplayManager(kinectSensor, debug.DebugCanvas);
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                //sdm.Draw();
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                //On obtient sa distance à la Kinect.
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                float distance = first.Position.Z;
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   323
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   324
                //On affiche la distance dans le debug.
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                debug.showDistance(distance);
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   326
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                //Si la main gauche est dans le champ, on lance l'événement approprié.
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                if (handLeft.Position.Z < maxDistHands && handLeft.Position.Z > minDistHands)
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   329
                {
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   330
                    LeftHandTrackedEventArgs leftHandTrackedEvent = new LeftHandTrackedEventArgs(handLeft, handLeft.Position.Z, debug, server);
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                    OnLeftHandTrackedEvent(leftHandTrackedEvent);
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   332
                }
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                //Si la main gauche quitte le champ, on lance l'événement approprié.
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   334
                else
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   335
                {
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   336
                    LeftHandQuitEventArgs leftHandQuitEvent = new LeftHandQuitEventArgs(handLeft, handLeft.Position.Z, debug, server);
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                    OnLeftHandQuitEvent(leftHandQuitEvent);
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   338
                }
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   339
                //Si la main droite est dans le champ, on lance l'événement approprié.
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   340
                if (handRight.Position.Z < maxDistHands && handRight.Position.Z > minDistHands)
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   341
                {
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   342
                    RightHandTrackedEventArgs rightHandTrackedEvent = new RightHandTrackedEventArgs(handRight, handRight.Position.Z, debug, server);
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                    OnRightHandTrackedEvent(rightHandTrackedEvent);
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   344
                }
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                //Si la main droite quitte le champ, on lance l'événement approprié.
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   346
                else
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   347
                {
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   348
                    RightHandQuitEventArgs rightHandQuitEvent = new RightHandQuitEventArgs(handRight, handRight.Position.Z, debug, server);
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   349
                    OnRightHandQuitEvent(rightHandQuitEvent);
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   350
                }
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   351
                
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   352
                //Si l'utilisateur effectue un swipe left.
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   353
                if (swipeDetector.CheckForSwipeLeft())
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   354
                {
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   355
                    SwipeEventArgs swipeEvent = new SwipeEventArgs(debug, server, SwipeDetector.Direction.LEFT);
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   356
                    OnSwipeEvent(swipeEvent);
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   357
                }
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   358
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   359
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   360
                //Dessine le squelette dans le debug.
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   361
                //debug.drawJoints(first.Joints, first);
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                //debug.showSkeleton(hipCenter, spine, shoulderCenter, head, shoulderLeft, elbowLeft, wristLeft, handLeft, shoulderRight, elbowRight, wristRight, handRight, hipLeft, kneeLeft, ankleLeft, footLeft, hipRight, kneeRight, ankleRight, footRight);
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   363
            }
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   364
        }
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   365
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   366
        /*
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   367
        *  Change l'échelle des coordonnées d'un noeud pour qu'en X et Y il corresponde à la résolution et en Z à la distance à la Kinect.
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   368
        */
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   369
        public Joint getJoint(Skeleton ske, int jointID)
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   370
        {
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   371
            return Coding4Fun.Kinect.Wpf.SkeletalExtensions.ScaleTo(ske.Joints.ElementAt(jointID), 600, 400, 0.75f, 0.75f);
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   372
        }
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   373
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   374
        /*
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   375
        *  Initialise l'événement et fait appel aux fonctions du listener quand la main gauche entre dans le champ.
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   376
        */
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   377
        public static void OnLeftHandTrackedEvent(LeftHandTrackedEventArgs e)
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   378
        {
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   379
            if (LeftHandTrackedEvent != null)
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   380
                LeftHandTrackedEvent(new object(), e);
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   381
        }
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diff changeset
   382
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   383
        /*
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   384
        *  Initialise l'événement et fait appel aux fonctions du listener quand la main droite entre dans le champ.
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   385
        */
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   386
        public static void OnRightHandTrackedEvent(RightHandTrackedEventArgs e)
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diff changeset
   387
        {
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diff changeset
   388
            if (RightHandTrackedEvent != null)
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diff changeset
   389
                RightHandTrackedEvent(new object(), e);
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diff changeset
   390
        }
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diff changeset
   391
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parents:
diff changeset
   392
        /*
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   393
        *  Initialise l'événement et fait appel aux fonctions du listener quand la main gauche quitte le champ.
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diff changeset
   394
        */
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diff changeset
   395
        public static void OnLeftHandQuitEvent(LeftHandQuitEventArgs e)
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diff changeset
   396
        {
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parents:
diff changeset
   397
            if (LeftHandQuitEvent != null)
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diff changeset
   398
                LeftHandQuitEvent(new object(), e);
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diff changeset
   399
        }
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   400
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   401
        /*
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   402
        *  Initialise l'événement et fait appel aux fonctions du listener quand la main droite quitte le champ.
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   403
        */
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   404
        public static void OnRightHandQuitEvent(RightHandQuitEventArgs e)
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   405
        {
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   406
            if (RightHandQuitEvent != null)
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   407
                RightHandQuitEvent(new object(), e);
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   408
        }
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   409
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   410
        /*
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   411
        *  Initialise l'événement et fait appel aux fonctions du listener quand l'utilisateur effectue un swipe right.
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   412
        */
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   413
        public static void OnSwipeEvent(SwipeEventArgs e)
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   414
        {
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   415
            if (SwipeEvent != null)
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   416
                SwipeEvent(new object(), e);
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   417
        }
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   418
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   419
        /*
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   420
        *  Initialise l'événement et fait appel aux fonctions du listener quand l'utilisateur effectue un swipe up.
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   421
        */
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   422
        /*public static void OnSwipeUpEvent(SwipeUpEventArgs e)
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   423
        {
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   424
            if (SwipeUpEvent != null)
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   425
                SwipeUpEvent(new object(), e);
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   426
        }*/
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   427
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   428
        /*
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   429
        *  Initialise l'événement et fait appel aux fonctions du listener quand l'utilisateur effectue un swipe down.
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   430
        */
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   431
        /*public static void OnSwipeDownEvent(SwipeDownEventArgs e)
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   432
        {
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   433
            if (SwipeDownEvent != null)
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   434
                SwipeDownEvent(new object(), e);
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   435
        }*/
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   436
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   437
        /*
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   438
        *  Méthode de chargement des paramètres (position du champ de recherche...).
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   439
        */
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   440
        public bool loadParameters()
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   441
        {
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   442
            try
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   443
            {
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   444
                minDistHands = float.Parse(ConfigurationManager.AppSettings["searchMinDistance"]);
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   445
                maxDistHands = float.Parse(ConfigurationManager.AppSettings["searchMaxDistance"]);
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   446
            }
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   447
            catch (Exception)
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   448
            {
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   449
                return false;
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   450
            }
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   451
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   452
            return true;
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   453
        }
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   454
    }
6fefd4afe506 First Import
bastiena
parents:
diff changeset
   455
}