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leap.js
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(function(){// Copyright: Hiroshi Ichikawa <http://gimite.net/en/>
// License: New BSD License
// Reference: http://dev.w3.org/html5/websockets/
// Reference: http://tools.ietf.org/html/rfc6455
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}
// swfobject.hasFlashPlayerVersion("10.0.0") doesn't work with Gnash.
if (swfobject.getFlashPlayerVersion().major < 10) {
logger.error("Flash Player >= 10.0.0 is required.");
return;
}
if (location.protocol == "file:") {
logger.error(
"WARNING: web-socket-js doesn't work in file:///... URL " +
"unless you set Flash Security Settings properly. " +
"Open the page via Web server i.e. http://...");
}
/**
* Our own implementation of WebSocket class using Flash.
* @param {string} url
* @param {array or string} protocols
* @param {string} proxyHost
* @param {int} proxyPort
* @param {string} headers
*/
window.WebSocket = function(url, protocols, proxyHost, proxyPort, headers) {
var self = this;
self.__id = WebSocket.__nextId++;
WebSocket.__instances[self.__id] = self;
self.readyState = WebSocket.CONNECTING;
self.bufferedAmount = 0;
self.__events = {};
if (!protocols) {
protocols = [];
} else if (typeof protocols == "string") {
protocols = [protocols];
}
// Uses setTimeout() to make sure __createFlash() runs after the caller sets ws.onopen etc.
// Otherwise, when onopen fires immediately, onopen is called before it is set.
self.__createTask = setTimeout(function() {
WebSocket.__addTask(function() {
self.__createTask = null;
WebSocket.__flash.create(
self.__id, url, protocols, proxyHost || null, proxyPort || 0, headers || null);
});
}, 0);
};
/**
* Send data to the web socket.
* @param {string} data The data to send to the socket.
* @return {boolean} True for success, false for failure.
*/
WebSocket.prototype.send = function(data) {
if (this.readyState == WebSocket.CONNECTING) {
throw "INVALID_STATE_ERR: Web Socket connection has not been established";
}
// We use encodeURIComponent() here, because FABridge doesn't work if
// the argument includes some characters. We don't use escape() here
// because of this:
// https://developer.mozilla.org/en/Core_JavaScript_1.5_Guide/Functions#escape_and_unescape_Functions
// But it looks decodeURIComponent(encodeURIComponent(s)) doesn't
// preserve all Unicode characters either e.g. "\uffff" in Firefox.
// Note by wtritch: Hopefully this will not be necessary using ExternalInterface. Will require
// additional testing.
var result = WebSocket.__flash.send(this.__id, encodeURIComponent(data));
if (result < 0) { // success
return true;
} else {
this.bufferedAmount += result;
return false;
}
};
/**
* Close this web socket gracefully.
*/
WebSocket.prototype.close = function() {
if (this.__createTask) {
clearTimeout(this.__createTask);
this.__createTask = null;
this.readyState = WebSocket.CLOSED;
return;
}
if (this.readyState == WebSocket.CLOSED || this.readyState == WebSocket.CLOSING) {
return;
}
this.readyState = WebSocket.CLOSING;
WebSocket.__flash.close(this.__id);
};
/**
* Implementation of {@link <a href="http://www.w3.org/TR/DOM-Level-2-Events/events.html#Events-registration">DOM 2 EventTarget Interface</a>}
*
* @param {string} type
* @param {function} listener
* @param {boolean} useCapture
* @return void
*/
WebSocket.prototype.addEventListener = function(type, listener, useCapture) {
if (!(type in this.__events)) {
this.__events[type] = [];
}
this.__events[type].push(listener);
};
/**
* Implementation of {@link <a href="http://www.w3.org/TR/DOM-Level-2-Events/events.html#Events-registration">DOM 2 EventTarget Interface</a>}
*
* @param {string} type
* @param {function} listener
* @param {boolean} useCapture
* @return void
*/
WebSocket.prototype.removeEventListener = function(type, listener, useCapture) {
if (!(type in this.__events)) return;
var events = this.__events[type];
for (var i = events.length - 1; i >= 0; --i) {
if (events[i] === listener) {
events.splice(i, 1);
break;
}
}
};
/**
* Implementation of {@link <a href="http://www.w3.org/TR/DOM-Level-2-Events/events.html#Events-registration">DOM 2 EventTarget Interface</a>}
*
* @param {Event} event
* @return void
*/
WebSocket.prototype.dispatchEvent = function(event) {
var events = this.__events[event.type] || [];
for (var i = 0; i < events.length; ++i) {
events[i](event);
}
var handler = this["on" + event.type];
if (handler) handler.apply(this, [event]);
};
/**
* Handles an event from Flash.
* @param {Object} flashEvent
*/
WebSocket.prototype.__handleEvent = function(flashEvent) {
if ("readyState" in flashEvent) {
this.readyState = flashEvent.readyState;
}
if ("protocol" in flashEvent) {
this.protocol = flashEvent.protocol;
}
var jsEvent;
if (flashEvent.type == "open" || flashEvent.type == "error") {
jsEvent = this.__createSimpleEvent(flashEvent.type);
} else if (flashEvent.type == "close") {
jsEvent = this.__createSimpleEvent("close");
jsEvent.wasClean = flashEvent.wasClean ? true : false;
jsEvent.code = flashEvent.code;
jsEvent.reason = flashEvent.reason;
} else if (flashEvent.type == "message") {
var data = decodeURIComponent(flashEvent.message);
jsEvent = this.__createMessageEvent("message", data);
} else {
throw "unknown event type: " + flashEvent.type;
}
this.dispatchEvent(jsEvent);
};
WebSocket.prototype.__createSimpleEvent = function(type) {
if (document.createEvent && window.Event) {
var event = document.createEvent("Event");
event.initEvent(type, false, false);
return event;
} else {
return {type: type, bubbles: false, cancelable: false};
}
};
WebSocket.prototype.__createMessageEvent = function(type, data) {
if (document.createEvent && window.MessageEvent && !window.opera) {
var event = document.createEvent("MessageEvent");
event.initMessageEvent("message", false, false, data, null, null, window, null);
return event;
} else {
// IE and Opera, the latter one truncates the data parameter after any 0x00 bytes.
return {type: type, data: data, bubbles: false, cancelable: false};
}
};
/**
* Define the WebSocket readyState enumeration.
*/
WebSocket.CONNECTING = 0;
WebSocket.OPEN = 1;
WebSocket.CLOSING = 2;
WebSocket.CLOSED = 3;
// Field to check implementation of WebSocket.
WebSocket.__isFlashImplementation = true;
WebSocket.__initialized = false;
WebSocket.__flash = null;
WebSocket.__instances = {};
WebSocket.__tasks = [];
WebSocket.__nextId = 0;
/**
* Load a new flash security policy file.
* @param {string} url
*/
WebSocket.loadFlashPolicyFile = function(url){
WebSocket.__addTask(function() {
WebSocket.__flash.loadManualPolicyFile(url);
});
};
/**
* Loads WebSocketMain.swf and creates WebSocketMain object in Flash.
*/
WebSocket.__initialize = function() {
if (WebSocket.__initialized) return;
WebSocket.__initialized = true;
if (WebSocket.__swfLocation) {
// For backword compatibility.
window.WEB_SOCKET_SWF_LOCATION = WebSocket.__swfLocation;
}
if (!window.WEB_SOCKET_SWF_LOCATION) {
logger.error("[WebSocket] set WEB_SOCKET_SWF_LOCATION to location of WebSocketMain.swf");
return;
}
if (!window.WEB_SOCKET_SUPPRESS_CROSS_DOMAIN_SWF_ERROR &&
!WEB_SOCKET_SWF_LOCATION.match(/(^|\/)WebSocketMainInsecure\.swf(\?.*)?$/) &&
WEB_SOCKET_SWF_LOCATION.match(/^\w+:\/\/([^\/]+)/)) {
var swfHost = RegExp.$1;
if (location.host != swfHost) {
logger.error(
"[WebSocket] You must host HTML and WebSocketMain.swf in the same host " +
"('" + location.host + "' != '" + swfHost + "'). " +
"See also 'How to host HTML file and SWF file in different domains' section " +
"in README.md. If you use WebSocketMainInsecure.swf, you can suppress this message " +
"by WEB_SOCKET_SUPPRESS_CROSS_DOMAIN_SWF_ERROR = true;");
}
}
var container = document.createElement("div");
container.id = "webSocketContainer";
// Hides Flash box. We cannot use display: none or visibility: hidden because it prevents
// Flash from loading at least in IE. So we move it out of the screen at (-100, -100).
// But this even doesn't work with Flash Lite (e.g. in Droid Incredible). So with Flash
// Lite, we put it at (0, 0). This shows 1x1 box visible at left-top corner but this is
// the best we can do as far as we know now.
container.style.position = "absolute";
if (WebSocket.__isFlashLite()) {
container.style.left = "0px";
container.style.top = "0px";
} else {
container.style.left = "-100px";
container.style.top = "-100px";
}
var holder = document.createElement("div");
holder.id = "webSocketFlash";
container.appendChild(holder);
document.body.appendChild(container);
// See this article for hasPriority:
// http://help.adobe.com/en_US/as3/mobile/WS4bebcd66a74275c36cfb8137124318eebc6-7ffd.html
swfobject.embedSWF(
WEB_SOCKET_SWF_LOCATION,
"webSocketFlash",
"1" /* width */,
"1" /* height */,
"10.0.0" /* SWF version */,
null,
null,
{hasPriority: true, swliveconnect : true, allowScriptAccess: "always"},
null,
function(e) {
if (!e.success) {
logger.error("[WebSocket] swfobject.embedSWF failed");
}
}
);
};
/**
* Called by Flash to notify JS that it's fully loaded and ready
* for communication.
*/
WebSocket.__onFlashInitialized = function() {
// We need to set a timeout here to avoid round-trip calls
// to flash during the initialization process.
setTimeout(function() {
WebSocket.__flash = document.getElementById("webSocketFlash");
WebSocket.__flash.setCallerUrl(location.href);
WebSocket.__flash.setDebug(!!window.WEB_SOCKET_DEBUG);
for (var i = 0; i < WebSocket.__tasks.length; ++i) {
WebSocket.__tasks[i]();
}
WebSocket.__tasks = [];
}, 0);
};
/**
* Called by Flash to notify WebSockets events are fired.
*/
WebSocket.__onFlashEvent = function() {
setTimeout(function() {
try {
// Gets events using receiveEvents() instead of getting it from event object
// of Flash event. This is to make sure to keep message order.
// It seems sometimes Flash events don't arrive in the same order as they are sent.
var events = WebSocket.__flash.receiveEvents();
for (var i = 0; i < events.length; ++i) {
WebSocket.__instances[events[i].webSocketId].__handleEvent(events[i]);
}
} catch (e) {
logger.error(e);
}
}, 0);
return true;
};
// Called by Flash.
WebSocket.__log = function(message) {
logger.log(decodeURIComponent(message));
};
// Called by Flash.
WebSocket.__error = function(message) {
logger.error(decodeURIComponent(message));
};
WebSocket.__addTask = function(task) {
if (WebSocket.__flash) {
task();
} else {
WebSocket.__tasks.push(task);
}
};
/**
* Test if the browser is running flash lite.
* @return {boolean} True if flash lite is running, false otherwise.
*/
WebSocket.__isFlashLite = function() {
if (!window.navigator || !window.navigator.mimeTypes) {
return false;
}
var mimeType = window.navigator.mimeTypes["application/x-shockwave-flash"];
if (!mimeType || !mimeType.enabledPlugin || !mimeType.enabledPlugin.filename) {
return false;
}
return mimeType.enabledPlugin.filename.match(/flashlite/i) ? true : false;
};
if (!window.WEB_SOCKET_DISABLE_AUTO_INITIALIZATION) {
// NOTE:
// This fires immediately if web_socket.js is dynamically loaded after
// the document is loaded.
swfobject.addDomLoadEvent(function() {
WebSocket.__initialize();
});
}
})();
})()
},{}],3:[function(require,module,exports){
window.requestAnimFrame = (function() {
return window.requestAnimationFrame ||
window.webkitRequestAnimationFrame ||
window.mozRequestAnimationFrame ||
window.oRequestAnimationFrame ||
window.msRequestAnimationFrame ||
function(callback) { window.setTimeout(callback, 1000 / 60); }
})();
Leap = require("../lib/index").Leap
},{"../lib/index":4}],5:[function(require,module,exports){
var CircularBuffer = exports.CircularBuffer = 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++;
}
},{}],6:[function(require,module,exports){
},{}],7:[function(require,module,exports){
// shim for using process in browser
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');
}
// TODO(shtylman)
process.cwd = function () { return '/' };
process.chdir = function (dir) {
throw new Error('process.chdir is not supported');
};
},{}],8:[function(require,module,exports){
(function(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;
}
// By default EventEmitters will print a warning if more than
// 10 listeners are added to it. This is a useful default which
// helps finding memory leaks.
//
// Obviously not all Emitters should be limited to 10. This function allows
// that to be increased. Set to zero for unlimited.
var defaultMaxListeners = 10;
EventEmitter.prototype.setMaxListeners = function(n) {
if (!this._events) this._events = {};
this._events.maxListeners = n;
};
EventEmitter.prototype.emit = function(type) {
// If there is no 'error' event listener then throw.
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]; // Unhandled 'error' event
} 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) {
// fast cases
case 1:
handler.call(this);
break;
case 2:
handler.call(this, arguments[1]);
break;
case 3:
handler.call(this, arguments[1], arguments[2]);
break;
// slower
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 is defined in src/node_events.cc
// EventEmitter.prototype.emit() is also defined there.
EventEmitter.prototype.addListener = function(type, listener) {
if ('function' !== typeof listener) {
throw new Error('addListener only takes instances of Function');
}
if (!this._events) this._events = {};
// To avoid recursion in the case that type == "newListeners"! Before
// adding it to the listeners, first emit "newListeners".
this.emit('newListener', type, listener);
if (!this._events[type]) {
// Optimize the case of one listener. Don't need the extra array object.
this._events[type] = listener;
} else if (isArray(this._events[type])) {
// Check for listener leak
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();
}
}
// If we've already got an array, just append.
this._events[type].push(listener);
} else {
// Adding the second element, need to change to array.
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');
}
// does not use listeners(), so no side effect of creating _events[type]
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;
}
// does not use listeners(), so no side effect of creating _events[type]
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];
};
})(require("__browserify_process"))
},{"__browserify_process":7}],4:[function(require,module,exports){
(function(){var Controller = require("./controller").Controller
, Frame = require("./frame").Frame
, Gesture = require("./gesture").Gesture
, Hand = require("./hand").Hand
, Pointable = require("./pointable").Pointable
, Connection = require("./connection").Connection
, InteractionBox = require("./interaction_box").InteractionBox
, CircularBuffer = require("./circular_buffer").CircularBuffer
, UI = require("./ui").UI
, glMatrix = require("gl-matrix")
, loopController = undefined;
/**
* Leap is the global namespace of the Leap API.
* @namespace Leap
*/
exports.Leap = {
/**
* The Leap.loop() function passes a frame of Leap data to your
* callback function and then calls window.requestAnimationFrame() after
* executing your callback function.
*
* Leap.loop() sets up the Leap controller and WebSocket connection for you.
* You do not need to create your own controller when using this method.
*
* Your callback function is called on an interval determined by the client
* browser. Typically, this is on an interval of 60 frames/second. The most
* recent frame of Leap data is passed to your callback function. If the Leap
* is producing frames at a slower rate than the browser frame rate, the same
* frame of Leap data can be passed to your function in successive animation
* updates.
*
* As an alternative, you can create your own Controller object and use a
* {@link Controller#onFrame onFrame} callback to process the data at
* the frame rate of the Leap device. See {@link Controller} for an
* example.
*
* @method Leap.loop
* @param {function} callback A function called when the browser is ready to
* draw to the screen. The most recent {@link Frame} object is passed to
* your callback function.
*
* ```javascript
* Leap.loop( function( frame ) {
* // ... your code here
* })
* ```
*/
loop: function(opts, callback) {
if (callback === undefined) {
callback = opts;
opts = {};
}
if (!loopController) loopController = new Controller(opts);
loopController.loop(callback);
},
Controller: Controller,
Frame: Frame,
Gesture: Gesture,
Hand: Hand,
Pointable: Pointable,
InteractionBox: InteractionBox,
Connection: Connection,
CircularBuffer: CircularBuffer,
UI: UI,
glMatrix: glMatrix
}
})()
},{"./circular_buffer":5,"./connection":9,"./controller":10,"./frame":11,"./gesture":12,"./hand":13,"./interaction_box":14,"./pointable":15,"./ui":16,"gl-matrix":17}],9:[function(require,module,exports){
var Connection = exports.Connection = require('./base_connection').Connection
Connection.prototype.setupSocket = function() {
var connection = this;
var socket = new WebSocket(this.getUrl());
socket.onopen = function() { connection.handleOpen() };
socket.onmessage = function(message) { connection.handleData(message.data) };
socket.onclose = function() { connection.handleClose() };
return socket;
}
Connection.prototype.teardownSocket = function() {
this.socket.close();
}
Connection.prototype.startHeartbeat = function() {
if (!this.protocol.sendHeartbeat || this.heartbeatTimer) 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 = "hidden";
}
var windowVisible = true;
var focusListener = window.addEventListener('focus', function(e) { windowVisible = true; });
var blurListener = window.addEventListener('blur', function(e) { windowVisible = false; });
this.on('disconnect', function() {
window.removeEventListener(focusListener);
window.removeEventListener(blurListener);
});
this.heartbeatTimer = setInterval(function() {
var isVisible = document[propertyName] === false;
if (isVisible && windowVisible) {
connection.sendHeartbeat();
} else {
connection.setHeartbeatState(false);
}
}, this.opts.heartbeatInterval);
}
},{"./base_connection":18}],16:[function(require,module,exports){
exports.UI = {
Region: require("./ui/region").Region,
Cursor: require("./ui/cursor").Cursor
};
},{"./ui/cursor":19,"./ui/region":20}],17:[function(require,module,exports){
(function(){/**
* @fileoverview gl-matrix - High performance matrix and vector operations
* @author Brandon Jones
* @author Colin MacKenzie IV
* @version 2.0.0
*/
/* Copyright (c) 2012, Brandon Jones, Colin MacKenzie IV. All rights reserved.
Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
(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 {
// gl-matrix lives in a browser, define its namespaces in global
shim.exports = window;
}
}
else {
// gl-matrix lives in commonjs, define its namespaces in exports
shim.exports = exports;
}
(function(exports) {
/* Copyright (c) 2012, Brandon Jones, Colin MacKenzie IV. All rights reserved.
Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
/**
* @class 2 Dimensional Vector
* @name vec2
*/
var vec2 = {};
if(!GLMAT_EPSILON) {
var GLMAT_EPSILON = 0.000001;
}
/**
* Creates a new, empty vec2
*
* @returns {vec2} a new 2D vector
*/
vec2.create = function() {
return new Float32Array(2);
};
/**
* Creates a new vec2 initialized with values from an existing vector
*
* @param {vec2} a vector to clone
* @returns {vec2} a new 2D vector
*/
vec2.clone = function(a) {
var out = new Float32Array(2);
out[0] = a[0];
out[1] = a[1];
return out;
};
/**
* Creates a new vec2 initialized with the given values
*
* @param {Number} x X component
* @param {Number} y Y component
* @returns {vec2} a new 2D vector
*/
vec2.fromValues = function(x, y) {
var out = new Float32Array(2);
out[0] = x;
out[1] = y;
return out;
};
/**
* Copy the values from one vec2 to another
*
* @param {vec2} out the receiving vector
* @param {vec2} a the source vector
* @returns {vec2} out
*/
vec2.copy = function(out, a) {
out[0] = a[0];
out[1] = a[1];
return out;
};
/**
* Set the components of a vec2 to the given values
*
* @param {vec2} out the receiving vector
* @param {Number} x X component
* @param {Number} y Y component
* @returns {vec2} out
*/
vec2.set = function(out, x, y) {
out[0] = x;
out[1] = y;
return out;
};
/**
* Adds two vec2's
*
* @param {vec2} out the receiving vector
* @param {vec2} a the first operand
* @param {vec2} b the second operand
* @returns {vec2} out
*/
vec2.add = function(out, a, b) {
out[0] = a[0] + b[0];
out[1] = a[1] + b[1];
return out;
};
/**
* Subtracts two vec2's
*
* @param {vec2} out the receiving vector
* @param {vec2} a the first operand
* @param {vec2} b the second operand
* @returns {vec2} out
*/
vec2.sub = vec2.subtract = function(out, a, b) {
out[0] = a[0] - b[0];
out[1] = a[1] - b[1];
return out;
};
/**
* Multiplies two vec2's
*
* @param {vec2} out the receiving vector
* @param {vec2} a the first operand
* @param {vec2} b the second operand
* @returns {vec2} out
*/
vec2.mul = vec2.multiply = function(out, a, b) {
out[0] = a[0] * b[0];
out[1] = a[1] * b[1];
return out;
};
/**
* Divides two vec2's
*
* @param {vec2} out the receiving vector
* @param {vec2} a the first operand
* @param {vec2} b the second operand
* @returns {vec2} out
*/
vec2.div = vec2.divide = function(out, a, b) {
out[0] = a[0] / b[0];