leapjs/leap.min.js

JavaScript client for the Leap Motion Controller

!function(e,t,n){function i(n,s){if(!t[n]){if(!e[n]){var o=typeof require=="function"&&require;if(!s&&o)return o(n,!0);if(r)return r(n,!0);throw new Error("Cannot find module '"+n+"'")}var u=t[n]={exports:{}};e[n][0].call(u.exports,function(t){var r=e[n][1][t];return i(r?r:t)},u,u.exports)}return t[n].exports}var r=typeof require=="function"&&require;for(var s=0;s<n.length;s++)i(n[s]);return i}({1:[function(require,module,exports){},{}],2:[function(require,module,exports){var CircularBuffer=module.exports=function(size){this.pos=0;this._buf=[];this.size=size};CircularBuffer.prototype.get=function(i){if(i==undefined)i=0;if(i>=this.size)return undefined;if(i>=this._buf.length)return undefined;return this._buf[(this.pos-i-1)%this.size]};CircularBuffer.prototype.push=function(o){this._buf[this.pos%this.size]=o;return this.pos++}},{}],3:[function(require,module,exports){var chooseProtocol=require("../protocol").chooseProtocol,EventEmitter=require("events").EventEmitter,_=require("underscore");var BaseConnection=module.exports=function(opts){this.opts=_.defaults(opts||{},{host:"127.0.0.1",enableGestures:false,port:6437,background:false,requestProtocolVersion:4});this.host=this.opts.host;this.port=this.opts.port;this.protocolVersionVerified=false;this.on("ready",function(){this.enableGestures(this.opts.enableGestures);this.setBackground(this.opts.background)})};BaseConnection.prototype.getUrl=function(){return"ws://"+this.host+":"+this.port+"/v"+this.opts.requestProtocolVersion+".json"};BaseConnection.prototype.setBackground=function(state){this.opts.background=state;if(this.protocol&&this.protocol.sendBackground&&this.background!==this.opts.background){this.background=this.opts.background;this.protocol.sendBackground(this,this.opts.background)}};BaseConnection.prototype.handleOpen=function(){if(!this.connected){this.connected=true;this.emit("connect")}};BaseConnection.prototype.enableGestures=function(enabled){this.gesturesEnabled=enabled?true:false;this.send(this.protocol.encode({enableGestures:this.gesturesEnabled}))};BaseConnection.prototype.handleClose=function(code,reason){if(!this.connected)return;this.disconnect();if(code===1001&&this.opts.requestProtocolVersion>1){if(this.protocolVersionVerified){this.protocolVersionVerified=false}else{this.opts.requestProtocolVersion--}}this.startReconnection()};BaseConnection.prototype.startReconnection=function(){var connection=this;this.reconnectionTimer=setInterval(function(){connection.reconnect()},1e3)};BaseConnection.prototype.disconnect=function(){if(!this.socket)return;this.socket.close();delete this.socket;delete this.protocol;delete this.background;if(this.connected){this.connected=false;this.emit("disconnect")}return true};BaseConnection.prototype.reconnect=function(){if(this.connected){clearInterval(this.reconnectionTimer)}else{this.disconnect();this.connect()}};BaseConnection.prototype.handleData=function(data){var message=JSON.parse(data);var messageEvent;if(this.protocol===undefined){messageEvent=this.protocol=chooseProtocol(message);this.protocolVersionVerified=true;this.emit("ready")}else{messageEvent=this.protocol(message)}this.emit(messageEvent.type,messageEvent)};BaseConnection.prototype.connect=function(){if(this.socket)return;this.socket=this.setupSocket();return true};BaseConnection.prototype.send=function(data){this.socket.send(data)};BaseConnection.prototype.reportFocus=function(state){if(this.focusedState===state)return;this.focusedState=state;this.emit(this.focusedState?"focus":"blur");if(this.protocol&&this.protocol.sendFocused){this.protocol.sendFocused(this,this.focusedState)}};_.extend(BaseConnection.prototype,EventEmitter.prototype)},{"../protocol":13,events:19,underscore:22}],4:[function(require,module,exports){var BaseConnection=module.exports=require("./base"),_=require("underscore");var BrowserConnection=module.exports=function(opts){BaseConnection.call(this,opts);var connection=this;this.on("ready",function(){connection.startFocusLoop()});this.on("disconnect",function(){connection.stopFocusLoop()})};_.extend(BrowserConnection.prototype,BaseConnection.prototype);BrowserConnection.prototype.setupSocket=function(){var connection=this;var socket=new WebSocket(this.getUrl());socket.onopen=function(){connection.handleOpen()};socket.onclose=function(data){connection.handleClose(data["code"],data["reason"])};socket.onmessage=function(message){connection.handleData(message.data)};return socket};BrowserConnection.prototype.startFocusLoop=function(){if(this.focusDetectorTimer)return;var connection=this;var propertyName=null;if(typeof document.hidden!=="undefined"){propertyName="hidden"}else if(typeof document.mozHidden!=="undefined"){propertyName="mozHidden"}else if(typeof document.msHidden!=="undefined"){propertyName="msHidden"}else if(typeof document.webkitHidden!=="undefined"){propertyName="webkitHidden"}else{propertyName=undefined}if(connection.windowVisible===undefined){connection.windowVisible=propertyName===undefined?true:document[propertyName]===false}var focusListener=window.addEventListener("focus",function(e){connection.windowVisible=true;updateFocusState()});var blurListener=window.addEventListener("blur",function(e){connection.windowVisible=false;updateFocusState()});this.on("disconnect",function(){window.removeEventListener("focus",focusListener);window.removeEventListener("blur",blurListener)});var updateFocusState=function(){var isVisible=propertyName===undefined?true:document[propertyName]===false;connection.reportFocus(isVisible&&connection.windowVisible)};this.focusDetectorTimer=setInterval(updateFocusState,100)};BrowserConnection.prototype.stopFocusLoop=function(){if(!this.focusDetectorTimer)return;clearTimeout(this.focusDetectorTimer);delete this.focusDetectorTimer}},{"./base":3,underscore:22}],5:[function(require,module,exports){var process=require("__browserify_process");var Frame=require("./frame"),Hand=require("./hand"),Pointable=require("./pointable"),CircularBuffer=require("./circular_buffer"),Pipeline=require("./pipeline"),EventEmitter=require("events").EventEmitter,gestureListener=require("./gesture").gestureListener,_=require("underscore");var Controller=module.exports=function(opts){var inNode=typeof process!=="undefined"&&process.versions&&process.versions.node,controller=this;opts=_.defaults(opts||{},{inNode:inNode});this.inNode=opts.inNode;opts=_.defaults(opts||{},{frameEventName:this.useAnimationLoop()?"animationFrame":"deviceFrame",suppressAnimationLoop:!this.useAnimationLoop(),loopWhileDisconnected:false,useAllPlugins:false});this.animationFrameRequested=false;this.onAnimationFrame=function(){controller.emit("animationFrame",controller.lastConnectionFrame);if(controller.loopWhileDisconnected&&(controller.connection.focusedState||controller.connection.opts.background)){window.requestAnimationFrame(controller.onAnimationFrame)}else{controller.animationFrameRequested=false}};this.suppressAnimationLoop=opts.suppressAnimationLoop;this.loopWhileDisconnected=opts.loopWhileDisconnected;this.frameEventName=opts.frameEventName;this.useAllPlugins=opts.useAllPlugins;this.history=new CircularBuffer(200);this.lastFrame=Frame.Invalid;this.lastValidFrame=Frame.Invalid;this.lastConnectionFrame=Frame.Invalid;this.accumulatedGestures=[];if(opts.connectionType===undefined){this.connectionType=this.inBrowser()?require("./connection/browser"):require("./connection/node")}else{this.connectionType=opts.connectionType}this.connection=new this.connectionType(opts);this.plugins={};this._pluginPipelineSteps={};this._pluginExtendedMethods={};if(opts.useAllPlugins)this.useRegisteredPlugins();this.setupConnectionEvents()};Controller.prototype.gesture=function(type,cb){var creator=gestureListener(this,type);if(cb!==undefined){creator.stop(cb)}return creator};Controller.prototype.setBackground=function(state){this.connection.setBackground(state);return this};Controller.prototype.inBrowser=function(){return!this.inNode};Controller.prototype.useAnimationLoop=function(){return this.inBrowser()&&!this.inBackgroundPage()};Controller.prototype.inBackgroundPage=function(){return typeof chrome!=="undefined"&&chrome.extension&&chrome.extension.getBackgroundPage&&chrome.extension.getBackgroundPage()===window};Controller.prototype.connect=function(){this.connection.connect();return this};Controller.prototype.runAnimationLoop=function(){if(!this.suppressAnimationLoop&&!this.animationFrameRequested){this.animationFrameRequested=true;window.requestAnimationFrame(this.onAnimationFrame)}};Controller.prototype.disconnect=function(){this.connection.disconnect();return this};Controller.prototype.frame=function(num){return this.history.get(num)||Frame.Invalid};Controller.prototype.loop=function(callback){switch(callback.length){case 1:this.on(this.frameEventName,callback);break;case 2:var controller=this;var scheduler=null;var immediateRunnerCallback=function(frame){callback(frame,function(){if(controller.lastFrame!=frame){immediateRunnerCallback(controller.lastFrame)}else{controller.once(controller.frameEventName,immediateRunnerCallback)}})};this.once(this.frameEventName,immediateRunnerCallback);break}return this.connect()};Controller.prototype.addStep=function(step){if(!this.pipeline)this.pipeline=new Pipeline(this);this.pipeline.addStep(step)};Controller.prototype.processFrame=function(frame){if(frame.gestures){this.accumulatedGestures=this.accumulatedGestures.concat(frame.gestures)}this.lastConnectionFrame=frame;this.runAnimationLoop();this.emit("deviceFrame",frame)};Controller.prototype.processFinishedFrame=function(frame){this.lastFrame=frame;if(frame.valid){this.lastValidFrame=frame}frame.controller=this;frame.historyIdx=this.history.push(frame);if(frame.gestures){frame.gestures=this.accumulatedGestures;this.accumulatedGestures=[];for(var gestureIdx=0;gestureIdx!=frame.gestures.length;gestureIdx++){this.emit("gesture",frame.gestures[gestureIdx],frame)}}if(this.pipeline){frame=this.pipeline.run(frame);if(!frame)frame=Frame.Invalid}this.emit("frame",frame)};Controller.prototype.setupConnectionEvents=function(){var controller=this;this.connection.on("frame",function(frame){controller.processFrame(frame)});this.on(this.frameEventName,function(frame){controller.processFinishedFrame(frame)});this.connection.on("disconnect",function(){controller.emit("disconnect")});this.connection.on("ready",function(){controller.emit("ready")});this.connection.on("connect",function(){controller.emit("connect")});this.connection.on("focus",function(){controller.emit("focus");controller.runAnimationLoop()});this.connection.on("blur",function(){controller.emit("blur")});this.connection.on("protocol",function(protocol){controller.emit("protocol",protocol)});this.connection.on("deviceConnect",function(evt){controller.emit(evt.state?"deviceConnected":"deviceDisconnected")})};Controller._pluginFactories={};Controller.plugin=function(pluginName,factory){if(this._pluginFactories[pluginName]){throw'Plugin "'+pluginName+'" already registered'}return this._pluginFactories[pluginName]=factory};Controller.plugins=function(){return _.keys(this._pluginFactories)};Controller.prototype.use=function(pluginName,options){var functionOrHash,pluginFactory,key,pluginInstance,klass;pluginFactory=typeof pluginName=="function"?pluginName:Controller._pluginFactories[pluginName];if(!pluginFactory){throw"Leap Plugin "+pluginName+" not found."}options||(options={});if(this.plugins[pluginName]){_.extend(this.plugins[pluginName],options);return this}this.plugins[pluginName]=options;pluginInstance=pluginFactory.call(this,options);for(key in pluginInstance){functionOrHash=pluginInstance[key];if(typeof functionOrHash==="function"){if(!this.pipeline)this.pipeline=new Pipeline(this);if(!this._pluginPipelineSteps[pluginName])this._pluginPipelineSteps[pluginName]=[];this._pluginPipelineSteps[pluginName].push(this.pipeline.addWrappedStep(key,functionOrHash))}else{if(!this._pluginExtendedMethods[pluginName])this._pluginExtendedMethods[pluginName]=[];switch(key){case"frame":klass=Frame;break;case"hand":klass=Hand;break;case"pointable":klass=Pointable;break;default:throw pluginName+' specifies invalid object type "'+key+'" for prototypical extension'}_.extend(klass.prototype,functionOrHash);_.extend(klass.Invalid,functionOrHash);this._pluginExtendedMethods[pluginName].push([klass,functionOrHash])}}return this};Controller.prototype.stopUsing=function(pluginName){var steps=this._pluginPipelineSteps[pluginName],extMethodHashes=this._pluginExtendedMethods[pluginName],i=0,klass,extMethodHash;if(!this.plugins[pluginName])return;if(steps){for(i=0;i<steps.length;i++){this.pipeline.removeStep(steps[i])}}if(extMethodHashes){for(i=0;i<extMethodHashes.length;i++){klass=extMethodHashes[i][0];extMethodHash=extMethodHashes[i][1];for(var methodName in extMethodHash){delete klass.prototype[methodName];delete klass.Invalid[methodName]}}}delete this.plugins[pluginName];return this};Controller.prototype.useRegisteredPlugins=function(){for(var plugin in Controller._pluginFactories){this.use(plugin)}};_.extend(Controller.prototype,EventEmitter.prototype)},{"./circular_buffer":2,"./connection/browser":4,"./connection/node":18,"./frame":6,"./gesture":7,"./hand":8,"./pipeline":11,"./pointable":12,__browserify_process:20,events:19,underscore:22}],6:[function(require,module,exports){var Hand=require("./hand"),Pointable=require("./pointable"),createGesture=require("./gesture").createGesture,glMatrix=require("gl-matrix"),mat3=glMatrix.mat3,vec3=glMatrix.vec3,InteractionBox=require("./interaction_box"),_=require("underscore");var Frame=module.exports=function(data){this.valid=true;this.id=data.id;this.timestamp=data.timestamp;this.hands=[];this.handsMap={};this.pointables=[];this.tools=[];this.fingers=[];if(data.interactionBox){this.interactionBox=new InteractionBox(data.interactionBox)}this.gestures=[];this.pointablesMap={};this._translation=data.t;this._rotation=_.flatten(data.r);this._scaleFactor=data.s;this.data=data;this.type="frame";this.currentFrameRate=data.currentFrameRate;var handMap={};for(var handIdx=0,handCount=data.hands.length;handIdx!=handCount;handIdx++){var hand=new Hand(data.hands[handIdx]);hand.frame=this;this.hands.push(hand);this.handsMap[hand.id]=hand;handMap[hand.id]=handIdx}for(var pointableIdx=0,pointableCount=data.pointables.length;pointableIdx!=pointableCount;pointableIdx++){var pointable=new Pointable(data.pointables[pointableIdx]);pointable.frame=this;this.pointables.push(pointable);this.pointablesMap[pointable.id]=pointable;(pointable.tool?this.tools:this.fingers).push(pointable);if(pointable.handId!==undefined&&handMap.hasOwnProperty(pointable.handId)){var hand=this.hands[handMap[pointable.handId]];hand.pointables.push(pointable);(pointable.tool?hand.tools:hand.fingers).push(pointable)}}if(data.gestures){for(var gestureIdx=0,gestureCount=data.gestures.length;gestureIdx!=gestureCount;gestureIdx++){this.gestures.push(createGesture(data.gestures[gestureIdx]))}}};Frame.prototype.tool=function(id){var pointable=this.pointable(id);return pointable.tool?pointable:Pointable.Invalid};Frame.prototype.pointable=function(id){return this.pointablesMap[id]||Pointable.Invalid};Frame.prototype.finger=function(id){var pointable=this.pointable(id);return!pointable.tool?pointable:Pointable.Invalid};Frame.prototype.hand=function(id){return this.handsMap[id]||Hand.Invalid};Frame.prototype.rotationAngle=function(sinceFrame,axis){if(!this.valid||!sinceFrame.valid)return 0;var rot=this.rotationMatrix(sinceFrame);var cs=(rot[0]+rot[4]+rot[8]-1)*.5;var angle=Math.acos(cs);angle=isNaN(angle)?0:angle;if(axis!==undefined){var rotAxis=this.rotationAxis(sinceFrame);angle*=vec3.dot(rotAxis,vec3.normalize(vec3.create(),axis))}return angle};Frame.prototype.rotationAxis=function(sinceFrame){if(!this.valid||!sinceFrame.valid)return vec3.create();return vec3.normalize(vec3.create(),[this._rotation[7]-sinceFrame._rotation[5],this._rotation[2]-sinceFrame._rotation[6],this._rotation[3]-sinceFrame._rotation[1]])};Frame.prototype.rotationMatrix=function(sinceFrame){if(!this.valid||!sinceFrame.valid)return mat3.create();var transpose=mat3.transpose(mat3.create(),this._rotation);return mat3.multiply(mat3.create(),sinceFrame._rotation,transpose)};Frame.prototype.scaleFactor=function(sinceFrame){if(!this.valid||!sinceFrame.valid)return 1;return Math.exp(this._scaleFactor-sinceFrame._scaleFactor)};Frame.prototype.translation=function(sinceFrame){if(!this.valid||!sinceFrame.valid)return vec3.create();return vec3.subtract(vec3.create(),this._translation,sinceFrame._translation)};Frame.prototype.toString=function(){var str="Frame [ id:"+this.id+" | timestamp:"+this.timestamp+" | Hand count:("+this.hands.length+") | Pointable count:("+this.pointables.length+")";if(this.gestures)str+=" | Gesture count:("+this.gestures.length+")";str+=" ]";return str};Frame.prototype.dump=function(){var out="";out+="Frame Info:<br/>";out+=this.toString();out+="<br/><br/>Hands:<br/>";for(var handIdx=0,handCount=this.hands.length;handIdx!=handCount;handIdx++){out+="  "+this.hands[handIdx].toString()+"<br/>"}out+="<br/><br/>Pointables:<br/>";for(var pointableIdx=0,pointableCount=this.pointables.length;pointableIdx!=pointableCount;pointableIdx++){out+="  "+this.pointables[pointableIdx].toString()+"<br/>"}if(this.gestures){out+="<br/><br/>Gestures:<br/>";for(var gestureIdx=0,gestureCount=this.gestures.length;gestureIdx!=gestureCount;gestureIdx++){out+="  "+this.gestures[gestureIdx].toString()+"<br/>"}}out+="<br/><br/>Raw JSON:<br/>";out+=JSON.stringify(this.data);return out};Frame.Invalid={valid:false,hands:[],fingers:[],tools:[],gestures:[],pointables:[],pointable:function(){return Pointable.Invalid},finger:function(){return Pointable.Invalid},hand:function(){return Hand.Invalid},toString:function(){return"invalid frame"},dump:function(){return this.toString()},rotationAngle:function(){return 0},rotationMatrix:function(){return mat3.create()},rotationAxis:function(){return vec3.create()},scaleFactor:function(){return 1},translation:function(){return vec3.create()}}},{"./gesture":7,"./hand":8,"./interaction_box":10,"./pointable":12,"gl-matrix":21,underscore:22}],7:[function(require,module,exports){var glMatrix=require("gl-matrix"),vec3=glMatrix.vec3,EventEmitter=require("events").EventEmitter,_=require("underscore");var createGesture=exports.createGesture=function(data){var gesture;switch(data.type){case"circle":gesture=new CircleGesture(data);break;case"swipe":gesture=new SwipeGesture(data);break;case"screenTap":gesture=new ScreenTapGesture(data);break;case"keyTap":gesture=new KeyTapGesture(data);break;default:throw"unkown gesture type"}gesture.id=data.id;gesture.handIds=data.handIds;gesture.pointableIds=data.pointableIds;gesture.duration=data.duration;gesture.state=data.state;gesture.type=data.type;return gesture};var gestureListener=exports.gestureListener=function(controller,type){var handlers={};var gestureMap={};controller.on("gesture",function(gesture,frame){if(gesture.type==type){if(gesture.state=="start"||gesture.state=="stop"){if(gestureMap[gesture.id]===undefined){var gestureTracker=new Gesture(gesture,frame);gestureMap[gesture.id]=gestureTracker;_.each(handlers,function(cb,name){gestureTracker.on(name,cb)})}}gestureMap[gesture.id].update(gesture,frame);if(gesture.state=="stop"){delete gestureMap[gesture.id]}}});var builder={start:function(cb){handlers["start"]=cb;return builder},stop:function(cb){handlers["stop"]=cb;return builder},complete:function(cb){handlers["stop"]=cb;return builder},update:function(cb){handlers["update"]=cb;return builder}};return builder};var Gesture=exports.Gesture=function(gesture,frame){this.gestures=[gesture];this.frames=[frame]};Gesture.prototype.update=function(gesture,frame){this.lastGesture=gesture;this.lastFrame=frame;this.gestures.push(gesture);this.frames.push(frame);this.emit(gesture.state,this)};Gesture.prototype.translation=function(){return vec3.subtract(vec3.create(),this.lastGesture.startPosition,this.lastGesture.position)};_.extend(Gesture.prototype,EventEmitter.prototype);var CircleGesture=function(data){this.center=data.center;this.normal=data.normal;this.progress=data.progress;this.radius=data.radius};CircleGesture.prototype.toString=function(){return"CircleGesture ["+JSON.stringify(this)+"]"};var SwipeGesture=function(data){this.startPosition=data.startPosition;this.position=data.position;this.direction=data.direction;this.speed=data.speed};SwipeGesture.prototype.toString=function(){return"SwipeGesture ["+JSON.stringify(this)+"]"};var ScreenTapGesture=function(data){this.position=data.position;this.direction=data.direction;this.progress=data.progress};ScreenTapGesture.prototype.toString=function(){return"ScreenTapGesture ["+JSON.stringify(this)+"]"};var KeyTapGesture=function(data){this.position=data.position;this.direction=data.direction;this.progress=data.progress};KeyTapGesture.prototype.toString=function(){return"KeyTapGesture ["+JSON.stringify(this)+"]"}},{events:19,"gl-matrix":21,underscore:22}],8:[function(require,module,exports){var Pointable=require("./pointable"),glMatrix=require("gl-matrix"),mat3=glMatrix.mat3,vec3=glMatrix.vec3,_=require("underscore");var Hand=module.exports=function(data){this.id=data.id;this.palmPosition=data.palmPosition;this.direction=data.direction;this.palmVelocity=data.palmVelocity;this.palmNormal=data.palmNormal;this.sphereCenter=data.sphereCenter;this.sphereRadius=data.sphereRadius;this.valid=true;this.pointables=[];this.fingers=[];this.tools=[];this._translation=data.t;this._rotation=_.flatten(data.r);this._scaleFactor=data.s;this.timeVisible=data.timeVisible;this.stabilizedPalmPosition=data.stabilizedPalmPosition};Hand.prototype.finger=function(id){var finger=this.frame.finger(id);return finger&&finger.handId==this.id?finger:Pointable.Invalid};Hand.prototype.rotationAngle=function(sinceFrame,axis){if(!this.valid||!sinceFrame.valid)return 0;var sinceHand=sinceFrame.hand(this.id);if(!sinceHand.valid)return 0;var rot=this.rotationMatrix(sinceFrame);var cs=(rot[0]+rot[4]+rot[8]-1)*.5;var angle=Math.acos(cs);angle=isNaN(angle)?0:angle;if(axis!==undefined){var rotAxis=this.rotationAxis(sinceFrame);angle*=vec3.dot(rotAxis,vec3.normalize(vec3.create(),axis))}return angle};Hand.prototype.rotationAxis=function(sinceFrame){if(!this.valid||!sinceFrame.valid)return vec3.create();var sinceHand=sinceFrame.hand(this.id);if(!sinceHand.valid)return vec3.create();return vec3.normalize(vec3.create(),[this._rotation[7]-sinceHand._rotation[5],this._rotation[2]-sinceHand._rotation[6],this._rotation[3]-sinceHand._rotation[1]])};Hand.prototype.rotationMatrix=function(sinceFrame){if(!this.valid||!sinceFrame.valid)return mat3.create();var sinceHand=sinceFrame.hand(this.id);if(!sinceHand.valid)return mat3.create();var transpose=mat3.transpose(mat3.create(),this._rotation);var m=mat3.multiply(mat3.create(),sinceHand._rotation,transpose);return m};Hand.prototype.scaleFactor=function(sinceFrame){if(!this.valid||!sinceFrame.valid)return 1;var sinceHand=sinceFrame.hand(this.id);if(!sinceHand.valid)return 1;return Math.exp(this._scaleFactor-sinceHand._scaleFactor)};Hand.prototype.translation=function(sinceFrame){if(!this.valid||!sinceFrame.valid)return vec3.create();var sinceHand=sinceFrame.hand(this.id);if(!sinceHand.valid)return vec3.create();return[this._translation[0]-sinceHand._translation[0],this._translation[1]-sinceHand._translation[1],this._translation[2]-sinceHand._translation[2]]};Hand.prototype.toString=function(){return"Hand [ id: "+this.id+" | palm velocity:"+this.palmVelocity+" | sphere center:"+this.sphereCenter+" ] "};Hand.prototype.pitch=function(){return Math.atan2(this.direction[1],-this.direction[2])};Hand.prototype.yaw=function(){return Math.atan2(this.direction[0],-this.direction[2])};Hand.prototype.roll=function(){return Math.atan2(this.palmNormal[0],-this.palmNormal[1])};Hand.Invalid={valid:false,fingers:[],tools:[],pointables:[],pointable:function(){return Pointable.Invalid},finger:function(){return Pointable.Invalid},toString:function(){return"invalid frame"},dump:function(){return this.toString()},rotationAngle:function(){return 0},rotationMatrix:function(){return mat3.create()},rotationAxis:function(){return vec3.create()},scaleFactor:function(){return 1},translation:function(){return vec3.create()}}},{"./pointable":12,"gl-matrix":21,underscore:22}],9:[function(require,module,exports){require("./_header");module.exports={Controller:require("./controller"),Frame:require("./frame"),Gesture:require("./gesture"),Hand:require("./hand"),Pointable:require("./pointable"),InteractionBox:require("./interaction_box"),CircularBuffer:require("./circular_buffer"),UI:require("./ui"),glMatrix:require("gl-matrix"),mat3:require("gl-matrix").mat3,vec3:require("gl-matrix").vec3,loopController:undefined,version:require("./version.js"),loop:function(opts,callback){if(callback===undefined){callback=opts;opts={}}opts.useAllPlugins||(opts.useAllPlugins=true);if(!this.loopController)this.loopController=new this.Controller(opts);this.loopController.loop(callback);return this.loopController},plugin:function(name,options){this.Controller.plugin(name,options)}}},{"./_header":1,"./circular_buffer":2,"./controller":5,"./frame":6,"./gesture":7,"./hand":8,"./interaction_box":10,"./pointable":12,"./ui":14,"./version.js":17,"gl-matrix":21}],10:[function(require,module,exports){var glMatrix=require("gl-matrix"),vec3=glMatrix.vec3;var InteractionBox=module.exports=function(data){this.valid=true;this.center=data.center;this.size=data.size;this.width=data.size[0];this.height=data.size[1];this.depth=data.size[2]};InteractionBox.prototype.denormalizePoint=function(normalizedPosition){return vec3.fromValues((normalizedPosition[0]-.5)*this.size[0]+this.center[0],(normalizedPosition[1]-.5)*this.size[1]+this.center[1],(normalizedPosition[2]-.5)*this.size[2]+this.center[2])};InteractionBox.prototype.normalizePoint=function(position,clamp){var vec=vec3.fromValues((position[0]-this.center[0])/this.size[0]+.5,(position[1]-this.center[1])/this.size[1]+.5,(position[2]-this.center[2])/this.size[2]+.5);if(clamp){vec[0]=Math.min(Math.max(vec[0],0),1);vec[1]=Math.min(Math.max(vec[1],0),1);vec[2]=Math.min(Math.max(vec[2],0),1)}return vec};InteractionBox.prototype.toString=function(){return"InteractionBox [ width:"+this.width+" | height:"+this.height+" | depth:"+this.depth+" ]"};InteractionBox.Invalid={valid:false}},{"gl-matrix":21}],11:[function(require,module,exports){var Pipeline=module.exports=function(controller){this.steps=[];this.controller=controller};Pipeline.prototype.addStep=function(step){this.steps.push(step)};Pipeline.prototype.run=function(frame){var stepsLength=this.steps.length;for(var i=0;i!=stepsLength;i++){if(!frame)break;frame=this.steps[i](frame)}return frame};Pipeline.prototype.removeStep=function(step){var index=this.steps.indexOf(step);if(index===-1)throw"Step not found in pipeline";this.steps.splice(index,1)};Pipeline.prototype.addWrappedStep=function(type,callback){var controller=this.controller,step=function(frame){var dependencies,i,len;dependencies=type=="frame"?[frame]:frame[type+"s"]||[];for(i=0,len=dependencies.length;i<len;i++){callback.call(controller,dependencies[i])}return frame};this.addStep(step);return step}},{}],12:[function(require,module,exports){var glMatrix=require("gl-matrix"),vec3=glMatrix.vec3;var Pointable=module.exports=function(data){this.valid=true;this.id=data.id;this.handId=data.handId;this.length=data.length;this.tool=data.tool;this.width=data.width;this.direction=data.direction;this.stabilizedTipPosition=data.stabilizedTipPosition;this.tipPosition=data.tipPosition;this.tipVelocity=data.tipVelocity;this.touchZone=data.touchZone;this.touchDistance=data.touchDistance;this.timeVisible=data.timeVisible};Pointable.prototype.toString=function(){if(this.tool==true){return"Pointable [ id:"+this.id+" "+this.length+"mmx | with:"+this.width+"mm | direction:"+this.direction+" ]"}else{return"Pointable [ id:"+this.id+" "+this.length+"mmx | direction: "+this.direction+" ]"}};Pointable.prototype.hand=function(){return this.frame.hand(this.handId)};Pointable.Invalid={valid:false}},{"gl-matrix":21}],13:[function(require,module,exports){var Frame=require("./frame");var Event=function(data){this.type=data.type;this.state=data.state};var chooseProtocol=exports.chooseProtocol=function(header){var protocol;switch(header.version){case 1:case 2:case 3:case 4:protocol=JSONProtocol(header.version,function(data){return data.event?new Event(data.event):new Frame(data)});protocol.sendBackground=function(connection,state){connection.send(protocol.encode({background:state}))};protocol.sendFocused=function(connection,state){connection.send(protocol.encode({focused:state}))};break;default:throw"unrecognized version"}return protocol};var JSONProtocol=function(version,cb){var protocol=cb;protocol.encode=function(message){return JSON.stringify(message)};protocol.version=version;protocol.versionLong="Version "+version;protocol.type="protocol";return protocol}},{"./frame":6}],14:[function(require,module,exports){exports.UI={Region:require("./ui/region"),Cursor:require("./ui/cursor")}},{"./ui/cursor":15,"./ui/region":16}],15:[function(require,module,exports){var Cursor=module.exports=function(){return function(frame){var pointable=frame.pointables.sort(function(a,b){return a.z-b.z})[0];if(pointable&&pointable.valid){frame.cursorPosition=pointable.tipPosition}return frame}}},{}],16:[function(require,module,exports){var EventEmitter=require("events").EventEmitter,_=require("underscore");var Region=module.exports=function(start,end){this.start=new Vector(start);this.end=new Vector(end);this.enteredFrame=null};Region.prototype.hasPointables=function(frame){for(var i=0;i!=frame.pointables.length;i++){var position=frame.pointables[i].tipPosition;if(position.x>=this.start.x&&position.x<=this.end.x&&position.y>=this.start.y&&position.y<=this.end.y&&position.z>=this.start.z&&position.z<=this.end.z){return true}}return false};Region.prototype.listener=function(opts){var region=this;if(opts&&opts.nearThreshold)this.setupNearRegion(opts.nearThreshold);return function(frame){return region.updatePosition(frame)}};Region.prototype.clipper=function(){var region=this;return function(frame){region.updatePosition(frame);return region.enteredFrame?frame:null}};Region.prototype.setupNearRegion=function(distance){var nearRegion=this.nearRegion=new Region([this.start.x-distance,this.start.y-distance,this.start.z-distance],[this.end.x+distance,this.end.y+distance,this.end.z+distance]);var region=this;nearRegion.on("enter",function(frame){region.emit("near",frame)});nearRegion.on("exit",function(frame){region.emit("far",frame)});region.on("exit",function(frame){region.emit("near",frame)})};Region.prototype.updatePosition=function(frame){if(this.nearRegion)this.nearRegion.updatePosition(frame);if(this.hasPointables(frame)&&this.enteredFrame==null){this.enteredFrame=frame;this.emit("enter",this.enteredFrame)}else if(!this.hasPointables(frame)&&this.enteredFrame!=null){this.enteredFrame=null;this.emit("exit",this.enteredFrame)}return frame};Region.prototype.normalize=function(position){return new Vector([(position.x-this.start.x)/(this.end.x-this.start.x),(position.y-this.start.y)/(this.end.y-this.start.y),(position.z-this.start.z)/(this.end.z-this.start.z)])};Region.prototype.mapToXY=function(position,width,height){var normalized=this.normalize(position);var x=normalized.x,y=normalized.y;if(x>1)x=1;else if(x<-1)x=-1;if(y>1)y=1;else if(y<-1)y=-1;return[(x+1)/2*width,(1-y)/2*height,normalized.z]};_.extend(Region.prototype,EventEmitter.prototype)},{events:19,underscore:22}],17:[function(require,module,exports){module.exports={full:"0.4.3",major:0,minor:4,dot:3}},{}],18:[function(require,module,exports){},{}],19:[function(require,module,exports){var process=require("__browserify_process");if(!process.EventEmitter)process.EventEmitter=function(){};var EventEmitter=exports.EventEmitter=process.EventEmitter;var isArray=typeof Array.isArray==="function"?Array.isArray:function(xs){return Object.prototype.toString.call(xs)==="[object Array]"
};function indexOf(xs,x){if(xs.indexOf)return xs.indexOf(x);for(var i=0;i<xs.length;i++){if(x===xs[i])return i}return-1}var defaultMaxListeners=10;EventEmitter.prototype.setMaxListeners=function(n){if(!this._events)this._events={};this._events.maxListeners=n};EventEmitter.prototype.emit=function(type){if(type==="error"){if(!this._events||!this._events.error||isArray(this._events.error)&&!this._events.error.length){if(arguments[1]instanceof Error){throw arguments[1]}else{throw new Error("Uncaught, unspecified 'error' event.")}return false}}if(!this._events)return false;var handler=this._events[type];if(!handler)return false;if(typeof handler=="function"){switch(arguments.length){case 1:handler.call(this);break;case 2:handler.call(this,arguments[1]);break;case 3:handler.call(this,arguments[1],arguments[2]);break;default:var args=Array.prototype.slice.call(arguments,1);handler.apply(this,args)}return true}else if(isArray(handler)){var args=Array.prototype.slice.call(arguments,1);var listeners=handler.slice();for(var i=0,l=listeners.length;i<l;i++){listeners[i].apply(this,args)}return true}else{return false}};EventEmitter.prototype.addListener=function(type,listener){if("function"!==typeof listener){throw new Error("addListener only takes instances of Function")}if(!this._events)this._events={};this.emit("newListener",type,listener);if(!this._events[type]){this._events[type]=listener}else if(isArray(this._events[type])){if(!this._events[type].warned){var m;if(this._events.maxListeners!==undefined){m=this._events.maxListeners}else{m=defaultMaxListeners}if(m&&m>0&&this._events[type].length>m){this._events[type].warned=true;console.error("(node) warning: possible EventEmitter memory "+"leak detected. %d listeners added. "+"Use emitter.setMaxListeners() to increase limit.",this._events[type].length);console.trace()}}this._events[type].push(listener)}else{this._events[type]=[this._events[type],listener]}return this};EventEmitter.prototype.on=EventEmitter.prototype.addListener;EventEmitter.prototype.once=function(type,listener){var self=this;self.on(type,function g(){self.removeListener(type,g);listener.apply(this,arguments)});return this};EventEmitter.prototype.removeListener=function(type,listener){if("function"!==typeof listener){throw new Error("removeListener only takes instances of Function")}if(!this._events||!this._events[type])return this;var list=this._events[type];if(isArray(list)){var i=indexOf(list,listener);if(i<0)return this;list.splice(i,1);if(list.length==0)delete this._events[type]}else if(this._events[type]===listener){delete this._events[type]}return this};EventEmitter.prototype.removeAllListeners=function(type){if(arguments.length===0){this._events={};return this}if(type&&this._events&&this._events[type])this._events[type]=null;return this};EventEmitter.prototype.listeners=function(type){if(!this._events)this._events={};if(!this._events[type])this._events[type]=[];if(!isArray(this._events[type])){this._events[type]=[this._events[type]]}return this._events[type]};EventEmitter.listenerCount=function(emitter,type){var ret;if(!emitter._events||!emitter._events[type])ret=0;else if(typeof emitter._events[type]==="function")ret=1;else ret=emitter._events[type].length;return ret}},{__browserify_process:20}],20:[function(require,module,exports){var process=module.exports={};process.nextTick=function(){var canSetImmediate=typeof window!=="undefined"&&window.setImmediate;var canPost=typeof window!=="undefined"&&window.postMessage&&window.addEventListener;if(canSetImmediate){return function(f){return window.setImmediate(f)}}if(canPost){var queue=[];window.addEventListener("message",function(ev){if(ev.source===window&&ev.data==="process-tick"){ev.stopPropagation();if(queue.length>0){var fn=queue.shift();fn()}}},true);return function nextTick(fn){queue.push(fn);window.postMessage("process-tick","*")}}return function nextTick(fn){setTimeout(fn,0)}}();process.title="browser";process.browser=true;process.env={};process.argv=[];process.binding=function(name){throw new Error("process.binding is not supported")};process.cwd=function(){return"/"};process.chdir=function(dir){throw new Error("process.chdir is not supported")}},{}],21:[function(require,module,exports){!function(){"use strict";var shim={};if(typeof exports==="undefined"){if(typeof define=="function"&&typeof define.amd=="object"&&define.amd){shim.exports={};define(function(){return shim.exports})}else{shim.exports=window}}else{shim.exports=exports}!function(exports){var vec2={};if(!GLMAT_EPSILON){var GLMAT_EPSILON=1e-6}vec2.create=function(){return new Float32Array(2)};vec2.clone=function(a){var out=new Float32Array(2);out[0]=a[0];out[1]=a[1];return out};vec2.fromValues=function(x,y){var out=new Float32Array(2);out[0]=x;out[1]=y;return out};vec2.copy=function(out,a){out[0]=a[0];out[1]=a[1];return out};vec2.set=function(out,x,y){out[0]=x;out[1]=y;return out};vec2.add=function(out,a,b){out[0]=a[0]+b[0];out[1]=a[1]+b[1];return out};vec2.sub=vec2.subtract=function(out,a,b){out[0]=a[0]-b[0];out[1]=a[1]-b[1];return out};vec2.mul=vec2.multiply=function(out,a,b){out[0]=a[0]*b[0];out[1]=a[1]*b[1];return out};vec2.div=vec2.divide=function(out,a,b){out[0]=a[0]/b[0];out[1]=a[1]/b[1];return out};vec2.min=function(out,a,b){out[0]=Math.min(a[0],b[0]);out[1]=Math.min(a[1],b[1]);return out};vec2.max=function(out,a,b){out[0]=Math.max(a[0],b[0]);out[1]=Math.max(a[1],b[1]);return out};vec2.scale=function(out,a,b){out[0]=a[0]*b;out[1]=a[1]*b;return out};vec2.dist=vec2.distance=function(a,b){var x=b[0]-a[0],y=b[1]-a[1];return Math.sqrt(x*x+y*y)};vec2.sqrDist=vec2.squaredDistance=function(a,b){var x=b[0]-a[0],y=b[1]-a[1];return x*x+y*y};vec2.len=vec2.length=function(a){var x=a[0],y=a[1];return Math.sqrt(x*x+y*y)};vec2.sqrLen=vec2.squaredLength=function(a){var x=a[0],y=a[1];return x*x+y*y};vec2.negate=function(out,a){out[0]=-a[0];out[1]=-a[1];return out};vec2.normalize=function(out,a){var x=a[0],y=a[1];var len=x*x+y*y;if(len>0){len=1/Math.sqrt(len);out[0]=a[0]*len;out[1]=a[1]*len}return out};vec2.dot=function(a,b){return a[0]*b[0]+a[1]*b[1]};vec2.cross=function(out,a,b){var z=a[0]*b[1]-a[1]*b[0];out[0]=out[1]=0;out[2]=z;return out};vec2.lerp=function(out,a,b,t){var ax=a[0],ay=a[1];out[0]=ax+t*(b[0]-ax);out[1]=ay+t*(b[1]-ay);return out};vec2.transformMat2=function(out,a,m){var x=a[0],y=a[1];out[0]=x*m[0]+y*m[1];out[1]=x*m[2]+y*m[3];return out};vec2.forEach=function(){var vec=new Float32Array(2);return function(a,stride,offset,count,fn,arg){var i,l;if(!stride){stride=2}if(!offset){offset=0}if(count){l=Math.min(count*stride+offset,a.length)}else{l=a.length}for(i=offset;i<l;i+=stride){vec[0]=a[i];vec[1]=a[i+1];fn(vec,vec,arg);a[i]=vec[0];a[i+1]=vec[1]}return a}}();vec2.str=function(a){return"vec2("+a[0]+", "+a[1]+")"};if(typeof exports!=="undefined"){exports.vec2=vec2}var vec3={};if(!GLMAT_EPSILON){var GLMAT_EPSILON=1e-6}vec3.create=function(){return new Float32Array(3)};vec3.clone=function(a){var out=new Float32Array(3);out[0]=a[0];out[1]=a[1];out[2]=a[2];return out};vec3.fromValues=function(x,y,z){var out=new Float32Array(3);out[0]=x;out[1]=y;out[2]=z;return out};vec3.copy=function(out,a){out[0]=a[0];out[1]=a[1];out[2]=a[2];return out};vec3.set=function(out,x,y,z){out[0]=x;out[1]=y;out[2]=z;return out};vec3.add=function(out,a,b){out[0]=a[0]+b[0];out[1]=a[1]+b[1];out[2]=a[2]+b[2];return out};vec3.sub=vec3.subtract=function(out,a,b){out[0]=a[0]-b[0];out[1]=a[1]-b[1];out[2]=a[2]-b[2];return out};vec3.mul=vec3.multiply=function(out,a,b){out[0]=a[0]*b[0];out[1]=a[1]*b[1];out[2]=a[2]*b[2];return out};vec3.div=vec3.divide=function(out,a,b){out[0]=a[0]/b[0];out[1]=a[1]/b[1];out[2]=a[2]/b[2];return out};vec3.min=function(out,a,b){out[0]=Math.min(a[0],b[0]);out[1]=Math.min(a[1],b[1]);out[2]=Math.min(a[2],b[2]);return out};vec3.max=function(out,a,b){out[0]=Math.max(a[0],b[0]);out[1]=Math.max(a[1],b[1]);out[2]=Math.max(a[2],b[2]);return out};vec3.scale=function(out,a,b){out[0]=a[0]*b;out[1]=a[1]*b;out[2]=a[2]*b;return out};vec3.dist=vec3.distance=function(a,b){var x=b[0]-a[0],y=b[1]-a[1],z=b[2]-a[2];return Math.sqrt(x*x+y*y+z*z)};vec3.sqrDist=vec3.squaredDistance=function(a,b){var x=b[0]-a[0],y=b[1]-a[1],z=b[2]-a[2];return x*x+y*y+z*z};vec3.len=vec3.length=function(a){var x=a[0],y=a[1],z=a[2];return Math.sqrt(x*x+y*y+z*z)};vec3.sqrLen=vec3.squaredLength=function(a){var x=a[0],y=a[1],z=a[2];return x*x+y*y+z*z};vec3.negate=function(out,a){out[0]=-a[0];out[1]=-a[1];out[2]=-a[2];return out};vec3.normalize=function(out,a){var x=a[0],y=a[1],z=a[2];var len=x*x+y*y+z*z;if(len>0){len=1/Math.sqrt(len);out[0]=a[0]*len;out[1]=a[1]*len;out[2]=a[2]*len}return out};vec3.dot=function(a,b){return a[0]*b[0]+a[1]*b[1]+a[2]*b[2]};vec3.cross=function(out,a,b){var ax=a[0],ay=a[1],az=a[2],bx=b[0],by=b[1],bz=b[2];out[0]=ay*bz-az*by;out[1]=az*bx-ax*bz;out[2]=ax*by-ay*bx;return out};vec3.lerp=function(out,a,b,t){var ax=a[0],ay=a[1],az=a[2];out[0]=ax+t*(b[0]-ax);out[1]=ay+t*(b[1]-ay);out[2]=az+t*(b[2]-az);return out};vec3.transformMat4=function(out,a,m){var x=a[0],y=a[1],z=a[2];out[0]=m[0]*x+m[4]*y+m[8]*z+m[12];out[1]=m[1]*x+m[5]*y+m[9]*z+m[13];out[2]=m[2]*x+m[6]*y+m[10]*z+m[14];return out};vec3.transformQuat=function(out,a,q){var x=a[0],y=a[1],z=a[2],qx=q[0],qy=q[1],qz=q[2],qw=q[3],ix=qw*x+qy*z-qz*y,iy=qw*y+qz*x-qx*z,iz=qw*z+qx*y-qy*x,iw=-qx*x-qy*y-qz*z;out[0]=ix*qw+iw*-qx+iy*-qz-iz*-qy;out[1]=iy*qw+iw*-qy+iz*-qx-ix*-qz;out[2]=iz*qw+iw*-qz+ix*-qy-iy*-qx;return out};vec3.forEach=function(){var vec=new Float32Array(3);return function(a,stride,offset,count,fn,arg){var i,l;if(!stride){stride=3}if(!offset){offset=0}if(count){l=Math.min(count*stride+offset,a.length)}else{l=a.length}for(i=offset;i<l;i+=stride){vec[0]=a[i];vec[1]=a[i+1];vec[2]=a[i+2];fn(vec,vec,arg);a[i]=vec[0];a[i+1]=vec[1];a[i+2]=vec[2]}return a}}();vec3.str=function(a){return"vec3("+a[0]+", "+a[1]+", "+a[2]+")"};if(typeof exports!=="undefined"){exports.vec3=vec3}var vec4={};if(!GLMAT_EPSILON){var GLMAT_EPSILON=1e-6}vec4.create=function(){return new Float32Array(4)};vec4.clone=function(a){var out=new Float32Array(4);out[0]=a[0];out[1]=a[1];out[2]=a[2];out[3]=a[3];return out};vec4.fromValues=function(x,y,z,w){var out=new Float32Array(4);out[0]=x;out[1]=y;out[2]=z;out[3]=w;return out};vec4.copy=function(out,a){out[0]=a[0];out[1]=a[1];out[2]=a[2];out[3]=a[3];return out};vec4.set=function(out,x,y,z,w){out[0]=x;out[1]=y;out[2]=z;out[3]=w;return out};vec4.add=function(out,a,b){out[0]=a[0]+b[0];out[1]=a[1]+b[1];out[2]=a[2]+b[2];out[3]=a[3]+b[3];return out};vec4.sub=vec4.subtract=function(out,a,b){out[0]=a[0]-b[0];out[1]=a[1]-b[1];out[2]=a[2]-b[2];out[3]=a[3]-b[3];return out};vec4.mul=vec4.multiply=function(out,a,b){out[0]=a[0]*b[0];out[1]=a[1]*b[1];out[2]=a[2]*b[2];out[3]=a[3]*b[3];return out};vec4.div=vec4.divide=function(out,a,b){out[0]=a[0]/b[0];out[1]=a[1]/b[1];out[2]=a[2]/b[2];out[3]=a[3]/b[3];return out};vec4.min=function(out,a,b){out[0]=Math.min(a[0],b[0]);out[1]=Math.min(a[1],b[1]);out[2]=Math.min(a[2],b[2]);out[3]=Math.min(a[3],b[3]);return out};vec4.max=function(out,a,b){out[0]=Math.max(a[0],b[0]);out[1]=Math.max(a[1],b[1]);out[2]=Math.max(a[2],b[2]);out[3]=Math.max(a[3],b[3]);return out};vec4.scale=function(out,a,b){out[0]=a[0]*b;out[1]=a[1]*b;out[2]=a[2]*b;out[3]=a[3]*b;return out};vec4.dist=vec4.distance=function(a,b){var x=b[0]-a[0],y=b[1]-a[1],z=b[2]-a[2],w=b[3]-a[3];return Math.sqrt(x*x+y*y+z*z+w*w)};vec4.sqrDist=vec4.squaredDistance=function(a,b){var x=b[0]-a[0],y=b[1]-a[1],z=b[2]-a[2],w=b[3]-a[3];return x*x+y*y+z*z+w*w};vec4.len=vec4.length=function(a){var x=a[0],y=a[1],z=a[2],w=a[3];return Math.sqrt(x*x+y*y+z*z+w*w)};vec4.sqrLen=vec4.squaredLength=function(a){var x=a[0],y=a[1],z=a[2],w=a[3];return x*x+y*y+z*z+w*w};vec4.negate=function(out,a){out[0]=-a[0];out[1]=-a[1];out[2]=-a[2];out[3]=-a[3];return out};vec4.normalize=function(out,a){var x=a[0],y=a[1],z=a[2],w=a[3];var len=x*x+y*y+z*z+w*w;if(len>0){len=1/Math.sqrt(len);out[0]=a[0]*len;out[1]=a[1]*len;out[2]=a[2]*len;out[3]=a[3]*len}return out};vec4.dot=function(a,b){return a[0]*b[0]+a[1]*b[1]+a[2]*b[2]+a[3]*b[3]};vec4.lerp=function(out,a,b,t){var ax=a[0],ay=a[1],az=a[2],aw=a[3];out[0]=ax+t*(b[0]-ax);out[1]=ay+t*(b[1]-ay);out[2]=az+t*(b[2]-az);out[3]=aw+t*(b[3]-aw);return out};vec4.transformMat4=function(out,a,m){var x=a[0],y=a[1],z=a[2],w=a[3];out[0]=m[0]*x+m[4]*y+m[8]*z+m[12]*w;out[1]=m[1]*x+m[5]*y+m[9]*z+m[13]*w;out[2]=m[2]*x+m[6]*y+m[10]*z+m[14]*w;out[3]=m[3]*x+m[7]*y+m[11]*z+m[15]*w;return out};vec4.transformQuat=function(out,a,q){var x=a[0],y=a[1],z=a[2],qx=q[0],qy=q[1],qz=q[2],qw=q[3],ix=qw*x+qy*z-qz*y,iy=qw*y+qz*x-qx*z,iz=qw*z+qx*y-qy*x,iw=-qx*x-qy*y-qz*z;out[0]=ix*qw+iw*-qx+iy*-qz-iz*-qy;out[1]=iy*qw+iw*-qy+iz*-qx-ix*-qz;out[2]=iz*qw+iw*-qz+ix*-qy-iy*-qx;return out};vec4.forEach=function(){var vec=new Float32Array(4);return function(a,stride,offset,count,fn,arg){var i,l;if(!stride){stride=4}if(!offset){offset=0}if(count){l=Math.min(count*stride+offset,a.length)}else{l=a.length}for(i=offset;i<l;i+=stride){vec[0]=a[i];vec[1]=a[i+1];vec[2]=a[i+2];vec[3]=a[i+3];fn(vec,vec,arg);a[i]=vec[0];a[i+1]=vec[1];a[i+2]=vec[2];a[i+3]=vec[3]}return a}}();vec4.str=function(a){return"vec4("+a[0]+", "+a[1]+", "+a[2]+", "+a[3]+")"};if(typeof exports!=="undefined"){exports.vec4=vec4}var mat2={};var mat2Identity=new Float32Array([1,0,0,1]);if(!GLMAT_EPSILON){var GLMAT_EPSILON=1e-6}mat2.create=function(){return new Float32Array(mat2Identity)};mat2.clone=function(a){var out=new Float32Array(4);out[0]=a[0];out[1]=a[1];out[2]=a[2];out[3]=a[3];return out};mat2.copy=function(out,a){out[0]=a[0];out[1]=a[1];out[2]=a[2];out[3]=a[3];return out};mat2.identity=function(out){out[0]=1;out[1]=0;out[2]=0;out[3]=1;return out};mat2.transpose=function(out,a){if(out===a){var a1=a[1];out[1]=a[2];out[2]=a1}else{out[0]=a[0];out[1]=a[2];out[2]=a[1];out[3]=a[3]}return out};mat2.invert=function(out,a){var a0=a[0],a1=a[1],a2=a[2],a3=a[3],det=a0*a3-a2*a1;if(!det){return null}det=1/det;out[0]=a3*det;out[1]=-a1*det;out[2]=-a2*det;out[3]=a0*det;return out};mat2.adjoint=function(out,a){var a0=a[0];out[0]=a[3];out[1]=-a[1];out[2]=-a[2];out[3]=a0;return out};mat2.determinant=function(a){return a[0]*a[3]-a[2]*a[1]};mat2.mul=mat2.multiply=function(out,a,b){var a0=a[0],a1=a[1],a2=a[2],a3=a[3];var b0=b[0],b1=b[1],b2=b[2],b3=b[3];out[0]=a0*b0+a1*b2;out[1]=a0*b1+a1*b3;out[2]=a2*b0+a3*b2;out[3]=a2*b1+a3*b3;return out};mat2.rotate=function(out,a,rad){var a0=a[0],a1=a[1],a2=a[2],a3=a[3],s=Math.sin(rad),c=Math.cos(rad);out[0]=a0*c+a1*s;out[1]=a0*-s+a1*c;out[2]=a2*c+a3*s;out[3]=a2*-s+a3*c;return out};mat2.scale=function(out,a,v){var a0=a[0],a1=a[1],a2=a[2],a3=a[3],v0=v[0],v1=v[1];out[0]=a0*v0;out[1]=a1*v1;out[2]=a2*v0;out[3]=a3*v1;return out};mat2.str=function(a){return"mat2("+a[0]+", "+a[1]+", "+a[2]+", "+a[3]+")"};if(typeof exports!=="undefined"){exports.mat2=mat2}var mat3={};var mat3Identity=new Float32Array([1,0,0,0,1,0,0,0,1]);if(!GLMAT_EPSILON){var GLMAT_EPSILON=1e-6}mat3.create=function(){return new Float32Array(mat3Identity)};mat3.clone=function(a){var out=new Float32Array(9);out[0]=a[0];out[1]=a[1];out[2]=a[2];out[3]=a[3];out[4]=a[4];out[5]=a[5];out[6]=a[6];out[7]=a[7];out[8]=a[8];return out};mat3.copy=function(out,a){out[0]=a[0];out[1]=a[1];out[2]=a[2];out[3]=a[3];out[4]=a[4];out[5]=a[5];out[6]=a[6];out[7]=a[7];out[8]=a[8];return out};mat3.identity=function(out){out[0]=1;out[1]=0;out[2]=0;out[3]=0;out[4]=1;out[5]=0;out[6]=0;out[7]=0;out[8]=1;return out};mat3.transpose=function(out,a){if(out===a){var a01=a[1],a02=a[2],a12=a[5];out[1]=a[3];out[2]=a[6];out[3]=a01;out[5]=a[7];out[6]=a02;out[7]=a12}else{out[0]=a[0];out[1]=a[3];out[2]=a[6];out[3]=a[1];out[4]=a[4];out[5]=a[7];out[6]=a[2];out[7]=a[5];out[8]=a[8]}return out};mat3.invert=function(out,a){var a00=a[0],a01=a[1],a02=a[2],a10=a[3],a11=a[4],a12=a[5],a20=a[6],a21=a[7],a22=a[8],b01=a22*a11-a12*a21,b11=-a22*a10+a12*a20,b21=a21*a10-a11*a20,det=a00*b01+a01*b11+a02*b21;if(!det){return null}det=1/det;out[0]=b01*det;out[1]=(-a22*a01+a02*a21)*det;out[2]=(a12*a01-a02*a11)*det;out[3]=b11*det;out[4]=(a22*a00-a02*a20)*det;out[5]=(-a12*a00+a02*a10)*det;out[6]=b21*det;out[7]=(-a21*a00+a01*a20)*det;out[8]=(a11*a00-a01*a10)*det;return out};mat3.adjoint=function(out,a){var a00=a[0],a01=a[1],a02=a[2],a10=a[3],a11=a[4],a12=a[5],a20=a[6],a21=a[7],a22=a[8];out[0]=a11*a22-a12*a21;out[1]=a02*a21-a01*a22;out[2]=a01*a12-a02*a11;out[3]=a12*a20-a10*a22;out[4]=a00*a22-a02*a20;out[5]=a02*a10-a00*a12;out[6]=a10*a21-a11*a20;out[7]=a01*a20-a00*a21;out[8]=a00*a11-a01*a10;return out};mat3.determinant=function(a){var a00=a[0],a01=a[1],a02=a[2],a10=a[3],a11=a[4],a12=a[5],a20=a[6],a21=a[7],a22=a[8];return a00*(a22*a11-a12*a21)+a01*(-a22*a10+a12*a20)+a02*(a21*a10-a11*a20)};mat3.mul=mat3.multiply=function(out,a,b){var a00=a[0],a01=a[1],a02=a[2],a10=a[3],a11=a[4],a12=a[5],a20=a[6],a21=a[7],a22=a[8],b00=b[0],b01=b[1],b02=b[2],b10=b[3],b11=b[4],b12=b[5],b20=b[6],b21=b[7],b22=b[8];out[0]=b00*a00+b01*a10+b02*a20;out[1]=b00*a01+b01*a11+b02*a21;out[2]=b00*a02+b01*a12+b02*a22;out[3]=b10*a00+b11*a10+b12*a20;out[4]=b10*a01+b11*a11+b12*a21;out[5]=b10*a02+b11*a12+b12*a22;out[6]=b20*a00+b21*a10+b22*a20;out[7]=b20*a01+b21*a11+b22*a21;out[8]=b20*a02+b21*a12+b22*a22;return out};mat3.str=function(a){return"mat3("+a[0]+", "+a[1]+", "+a[2]+", "+a[3]+", "+a[4]+", "+a[5]+", "+a[6]+", "+a[7]+", "+a[8]+")"};if(typeof exports!=="undefined"){exports.mat3=mat3}var mat4={};var mat4Identity=new Float32Array([1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1]);if(!GLMAT_EPSILON){var GLMAT_EPSILON=1e-6}mat4.create=function(){return new Float32Array(mat4Identity)};mat4.clone=function(a){var out=new Float32Array(16);out[0]=a[0];out[1]=a[1];out[2]=a[2];out[3]=a[3];out[4]=a[4];out[5]=a[5];out[6]=a[6];out[7]=a[7];out[8]=a[8];out[9]=a[9];out[10]=a[10];out[11]=a[11];out[12]=a[12];out[13]=a[13];out[14]=a[14];out[15]=a[15];return out};mat4.copy=function(out,a){out[0]=a[0];out[1]=a[1];out[2]=a[2];out[3]=a[3];out[4]=a[4];out[5]=a[5];out[6