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/* |
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* This file is part of the TraKERS\Front JS 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 |
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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 : Front JS |
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* Fichier : index.html |
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* |
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* Auteur : alexandre.bastien@iri.centrepompidou.fr |
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* |
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* Fonctionnalités : Définit le module de communication qui établit la connexion entre ce Front et le Middleware. |
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*/ |
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/* |
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* Un client est défini par une socket, qui permettra de recevoir les données du server websocket du Middleware. |
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* On accède aussi à la classe des pointeurs. |
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*/ |
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function client(host, port, _pointers) |
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{ |
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this.socket; |
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this.pointers = _pointers; |
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this.pointerLeft = false; |
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this.pointerRight = false; |
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this.timePointers = 100; |
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this.pointerLeftTimeout; |
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this.pointerRightTimeout; |
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this.isLeftHanded = false; |
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this.createWebSocket('ws://' + host + ':' + port + '/'); |
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} |
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/* |
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* Création et Initialisation des sockets et listeners permettant d'écouter le server. |
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*/ |
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client.prototype.createWebSocket = function(host) |
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{ |
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var _this = this; |
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//Initialise la fonctionnalité websocket du naviguateur. |
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if(window.MozWebSocket) |
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{ |
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window.WebSocket = window.MozWebSocket; |
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} |
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//Si le naviguateur ne supporte pas les websockets, on s'arrête là. |
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if(!window.WebSocket) |
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{ |
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alert('Votre navigateur ne supporte pas les webSocket!'); |
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return false; |
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} |
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//Sinon |
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else |
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{ |
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//On initialise la socket. |
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this.socket = new WebSocket(host); |
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//Si elle est ouverte, on notifie le Front. |
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this.socket.onopen = function() |
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{ |
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console.log('Socket ouverte.'); |
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} |
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//Si elle est fermée, on notifie le Front. |
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this.socket.onclose = function() |
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{ |
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console.log('Socket fermée.'); |
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} |
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//S'il y a un problème dans la connection, on notifie le Front. |
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this.socket.onerror = function() |
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{ |
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console.log('Une erreur est survenue dans le module de Communication.'); |
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} |
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//Si on reçoit un message. |
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this.socket.onmessage = function(msg) |
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{ |
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_this.processMsg(msg); |
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} |
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} |
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} |
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/* |
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* Traite un message reçu du Middleware. |
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*/ |
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client.prototype.processMsg = function(msg) |
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{ |
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if(typeof msg === 'undefined' || typeof msg.data === 'undefined') |
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{ |
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return; |
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} |
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var _this = this; |
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//Sinon si ce sont les coordonnées de la main droite. |
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if(msg.data[0] == '1') |
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{ |
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var instruction = msg.data.substring(2, msg.data.length); |
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pt = instruction.split(';'); |
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var x = Math.abs(parseFloat(pt[0])), y = Math.abs(parseFloat(pt[1])); |
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this.pointerLeft = true; |
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clearTimeout(this.pointerLeftTimeout); |
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this.pointers.refreshMainPointer(x, y); |
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if(!this.pointers.isMainPointerDisplayed) |
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{ |
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this.pointers.mainPointerDisplay(true); |
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this.pointers.isMainPointerDisplayed = true; |
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} |
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this.pointerLeftTimeout = setTimeout(function() |
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{ |
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_this.pointerLeft = false; |
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if(_this.pointers.isMainPointerDisplayed) |
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{ |
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_this.pointers.isMainPointerDisplayed = false; |
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_this.pointers.mainPointerDisplay(false); |
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} |
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}, this.timePointers); |
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} |
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//Sinon si ce sont les coordonnées de la main gauche. |
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else if(msg.data[0] == '0') |
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{ |
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var instruction = msg.data.substring(2, msg.data.length); |
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pt = instruction.split(';'); |
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var x = Math.abs(parseFloat(pt[0])), y = Math.abs(parseFloat(pt[1])); |
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this.pointerRight = true; |
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clearTimeout(this.pointerRightTimeout); |
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this.pointers.refreshSecondPointer(x, y); |
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if(!this.pointers.isSecondPointerDisplayed) |
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{ |
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this.pointers.secondPointerDisplay(true); |
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this.pointers.isSecondPointerDisplayed = true; |
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} |
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this.pointerRightTimeout = setTimeout(function() |
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{ |
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_this.pointerRight = false; |
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if(_this.pointers.isSecondPointerDisplayed) |
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{ |
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_this.pointers.isSecondPointerDisplayed = false; |
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_this.pointers.secondPointerDisplay(false); |
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} |
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}, this.timePointers); |
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} |
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if(this.pointerLeft && !this.pointerRight || !this.pointerLeft && this.pointerRight || !this.pointerLeft && !this.pointerRight) |
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{ |
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this.pointers.areBothPointersHere = false; |
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} |
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} |