middleware/Communication/Server.cs
author bastiena
Fri, 06 Apr 2012 11:48:00 +0200
changeset 24 2bdf5d51d434
parent 16 a9ebacd6c089
child 27 6c08d4d7219e
permissions -rw-r--r--
Front IDILL : TuioPoint class header modified in order to manage 3D points TuioContainer class header modified in order to manage 3D points TuioCursor class header modified in order to manage 3D points TuioClient class header modified in order to manage 3D points TuioClient class modified in order to manage 3D points client class header modified in order to manage 3D points client class modified in order to manage 3D points
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/*
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* This file is part of the TraKERS\Middleware package.
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*
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* (c) IRI <http://www.iri.centrepompidou.fr/>
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*
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* For the full copyright and license information, please view the LICENSE_MIDDLEWARE
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* file that was distributed with this source code.
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*/
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/*
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 * Projet : TraKERS
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 * Module : MIDDLEWARE
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 * Sous-Module : Communication
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 * Classe : Server
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 * 
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 * Auteur : alexandre.bastien@iri.centrepompidou.fr
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 * 
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 * Fonctionnalités : Reçoit des notifications du module sous-module Tracking.
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 * Traduit les notifications sous forme de messages OSC et les envoie au Front Atelier.
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 * Forme des messages :
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 * - Notification de main dans le champ de recherche : Point3D indiquant la position de la main dans l'espace.
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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.IO;
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using System.Net;
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using System.Net.Sockets;
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using System.Threading;
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using Tuio;
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using System.Windows;
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using Microsoft.Kinect;
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using System.Windows.Media.Media3D;
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using System.Timers;
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using System.Resources;
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using System.Reflection;
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namespace Trakers.Communication
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{
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    public class Server
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    {
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        //Serveur TUIO, provenant de la DLL TuioServer créé par Bespoke.
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        private TuioServer server;
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        //Permet de savoir si un curseur pour la main gauche/droite a été créé.
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        private bool leftHandCursorCreated;
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        private bool rightHandCursorCreated;
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        private bool messageCreated;
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        private bool gestureLocked, modLocked;
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        //Intervalle minimum entre les gestures.
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        private int timerElapsing;
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        //Timer.
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        private System.Timers.Timer _timer;
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        //Dernier code envoyé.
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        private String lastCode;
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        /*
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        * Constructeur : On initialise le serveur avec une adresse et un port, au début les curseurs
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        * ne sont pas créés et on indique au ThreadPool une fonction de callback de manière à vérifier
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        * s'il reçoit des notifications.
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        */
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        public Server(String host, int port, int _timerElapsing)
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        {
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            //Au départ, aucune main n'est dans le champ de recherche et aucune gesture n'est détectée.
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            leftHandCursorCreated = false;
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            rightHandCursorCreated = false;
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            messageCreated = false;
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            gestureLocked = false;
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            modLocked = false;
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            lastCode = "";
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            timerElapsing = _timerElapsing;
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            //On démarre le serveur TUIO.
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            server = new TuioServer(host, port);
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            //On initialise le threadPool (appelé toutes les N ms).
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            ThreadPool.QueueUserWorkItem(ThreadPoolCallback);
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            //On instancie le timer à N ms.
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            _timer = new System.Timers.Timer(timerElapsing);
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            //Dès que le timer est expiré, on appelle _timer_Elapsed.
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            _timer.Elapsed += new ElapsedEventHandler(_timer_Elapsed);
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        }
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        /*
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        * Getter du serveur.
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        */
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        public TuioServer getServer()
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        {
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            return server;
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        }
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        /*
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         * Méthode appelée à l'expiration du timer pour les gestures et modes.
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         */
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        public void _timer_Elapsed(object sender, ElapsedEventArgs e)
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        {
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            //On débloque la détection de gesture.
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            gestureLocked = false;
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            //On débloque la notification de nouveau mode.
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            modLocked = false;
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            //On arrête le timer.
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            _timer.Stop();
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        }
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        /*
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        * Méthode appelée lors d'une notification de type : main gauche entrée dans le champ.
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        */
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        public void LeftHandTracked(Point3D pt)
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        {
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            //Si le curseur de la main gauche n'est pas créé, alors on le crée.
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            if (!leftHandCursorCreated)
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            {
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                server.AddTuioCursor(0, pt);
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                leftHandCursorCreated = true;
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            }
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            //S'il existe, on le met simplement à jour.
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            else
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                server.UpdateTuioCursor(0, pt);
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        }
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        /*
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        * Méthode appelée lors d'une notification de type : main droite entrée dans le champ.
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        */
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        public void RightHandTracked(Point3D pt)
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        {
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            //Si le curseur de la main droite n'est pas créé, alors on le crée.
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            if (!rightHandCursorCreated)
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            {
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                server.AddTuioCursor(1, pt);
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                rightHandCursorCreated = true;
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            }
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            //S'il existe, on le met simplement à jour.
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            else
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                server.UpdateTuioCursor(1, pt);
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        }
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        /*
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        * Méthode appelée lors d'une notification de type : main gauche sortie du champ.
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        */
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        public void LeftHandQuit()
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        {
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            //Si le curseur de la main gauche existe, alors on le supprime.
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            if (leftHandCursorCreated)
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            {
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                server.DeleteTuioCursor(0);
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                leftHandCursorCreated = false;
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            }
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        }
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        /*
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        * Méthode appelée lors d'une notification de type : main droite sortie du champ.
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        */
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        public void RightHandQuit()
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        {
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            //Si le curseur de la main droite existe, alors on le supprime.
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            if (rightHandCursorCreated)
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            {
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                server.DeleteTuioCursor(1);
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                rightHandCursorCreated = false;
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            }
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        }
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        /*
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        * Méthode appelée lorsqu'une gesture a été détectée et que l'événement approprié a été lancé.
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        */
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        public void GesturePerformed(String code)
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        {
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            //Si le code vient d'être envoyé, on passe.
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            if (lastCode.Equals(code))
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                return;
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            lastCode = code;
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            //Si une gesture a été effectuée, on bloque un certain temps.
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            if (!gestureLocked)
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            {
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                gestureLocked = true;
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                //On crée un message contenant le code à envoyer.
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                if (!messageCreated)
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                {
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                    messageCreated = true;
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                    server.AddTuioString(2, code);
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                    //On démarre le timer.
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                    _timer.Start();
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                }
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            }
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        }
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        /*
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        * Méthode appelée lorsqu'on doit entrer dans un autre mode.
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        */
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        public void ModeNotification(String code)
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        {
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            //Si le code vient d'être envoyé, on passe.
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            if (lastCode.Equals(code))
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                return;
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            lastCode = code;
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            //Si on a été notifié.
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            if (!modLocked)
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            {
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                modLocked = true;
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                //On crée un message contenant le code à envoyer.
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                if (!messageCreated)
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                {
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                    messageCreated = true;
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                    server.AddTuioString(2, code);
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                    //On démarre le timer.
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                    _timer.Start();
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                }
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            }
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        }
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        /*
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        * Méthode de callback vérifiant toutes les 25 ms les nouvelles notifications.
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        * Il est à noter que si le temps de rafraîchissement des trop rapide, les messages n'ont pas
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        * le temps d'être envoyés.
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        */
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        private void ThreadPoolCallback(Object threadContext)
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        {
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            while (true)
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            {
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                //On initialise le message OSC.
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                server.InitFrame();
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                //On l'envoie au client (au host et au port spécifiés dans le constructeur).
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                server.CommitFrame();
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                //On attend 25 ms.
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                Thread.Sleep(25);
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                //Si une gesture a été effectuée et que le délai d'attente est expiré.
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                if (messageCreated && !gestureLocked && !modLocked)
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                {
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                    //On débloque la détection de gesture et on supprime l'objet envoyant les messages OSC de gesture.
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                    messageCreated = false;
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                    server.DeleteTuioString(2);
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                }
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            }
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        }
16
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        /*
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         * Getters et Setters
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         */
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        public void setTimerElapsing(int _timerElapsing)
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        {
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            timerElapsing = _timerElapsing;
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        }
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        public int getTimerElapsing()
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        {
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            return timerElapsing;
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        }
15
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    }
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}