diff --git a/config/build.config.js b/config/build.config.js
index c2398ccdad..1afbf0487d 100644
--- a/config/build.config.js
+++ b/config/build.config.js
@@ -64,7 +64,11 @@ module.exports = {
'js/controllers/sideMenuController.js',
// Animation
- 'js/animation/*.js'
+ 'js/animation/animation.js',
+ 'js/animation/bezier.js',
+ 'js/animation/dynamics.js',
+ 'js/animation/timing-functions.js',
+ 'js/animation/instance.js'
],
angularIonicFiles: [
diff --git a/js/angular/service/animation.js b/js/angular/service/animation.js
new file mode 100644
index 0000000000..a5d59e43a8
--- /dev/null
+++ b/js/angular/service/animation.js
@@ -0,0 +1,65 @@
+
+/**
+ * @ngdoc service
+ * @name $ionicAnimation
+ * @module ionic
+ * @description
+ *
+ * A powerful animation and transition system for Ionic apps.
+ *
+ * @usage
+ *
+ * ```js
+ * angular.module('mySuperApp', ['ionic'])
+ * .controller(function($scope, $ionicAnimation) {
+ * var anim = $ionicAnimate({
+ * // A unique, reusable name
+ * name: 'popIn',
+ *
+ * // The duration of an auto playthrough
+ * duration: 0.5,
+ *
+ * // How long to wait before running the animation
+ * delay: 0,
+ *
+ * // Whether to reverse after doing one run through
+ * autoReverse: false,
+ *
+ * // How many times to repeat? -1 or null for infinite
+ * repeat: -1,
+ *
+ * // Timing curve to use (same as CSS timing functions), or a function of time "t" to handle it yourself
+ * curve: 'ease-in-out'
+ *
+ * onStart: function() {
+ * // Callback on start
+ * },
+ * onEnd: function() {
+ * // Callback on end
+ * },
+ * step: function(amt) {
+ *
+ * }
+ * })
+ * });
+ * ```
+ *
+ */
+IonicModule
+.provider('$ionicAnimation', function() {
+ var useSlowAnimations = false;
+ this.setSlowAnimations = function(isSlow) {
+ useSlowAnimations = isSlow;
+ };
+
+ this.create = function(animation) {
+ return ionic.Animation.create(animation);
+ };
+
+ this.$get = [function() {
+ return function(opts) {
+ opts.useSlowAnimations = useSlowAnimations;
+ return ionic.Animation.create(opts);
+ }
+ }]
+});
diff --git a/js/animation/animation.js b/js/animation/animation.js
new file mode 100644
index 0000000000..209e5310c0
--- /dev/null
+++ b/js/animation/animation.js
@@ -0,0 +1,117 @@
+(function(window) {
+ var counter = 1;
+ var running = {};
+
+ // Namespace
+ ionic.Animation = ionic.Animation || {};
+
+ /**
+ * The main animation system manager. Treated as a singleton.
+ */
+ ionic.Animation = {
+ create: function(opts) {
+ var tf;
+
+ if(typeof opts.curve === 'string') {
+ tf = ionic.Animation.TimingFn[opts.curve] || ionic.Animation.TimingFn['linear'];
+ if(opts.curve.indexOf('cubic-bezier(') >= 0) {
+ var parts = opts.curve.replace('cubic-bezier(', '').replace(')', '').split(',');
+ tf = ionic.Animation.TimingFn['cubic-bezier'];
+ tf = tf(parts[0], parts[1], parts[2], parts[3], opts.duration);
+ } else {
+ tf = tf(opts.duration);
+ }
+ } else {
+ tf = opts.curve;
+ tf = tf(opts.duration);
+ }
+
+ opts.curveFn = tf;
+
+ if(opts.dynamicsType) {
+ opts.dynamic = new opts.dynamicsType(opts);
+ }
+
+ return new ionic.Animation.Animation(opts);
+ },
+
+ animationStarted: function(instance) {
+ var id = counter++;
+
+ // Compacting running db automatically every few new animations
+ if (id % 20 === 0) {
+ var newRunning = {};
+ for (var usedId in running) {
+ newRunning[usedId] = true;
+ }
+ running = newRunning;
+ }
+
+ // Mark as running
+ running[id] = true;
+
+ instance.isRunning = true;
+ instance._animationId = id;
+
+ // Return unique animation ID
+ return id;
+ },
+
+ animationStopped: function(instance) {
+ instance.isRunning = false;
+ }
+
+ /* TODO: Move animation set management here instead of instance
+ anims: [],
+ add: function(animation) {
+ this.anims.push(animation);
+ },
+ remove: function(animation) {
+ var i, j;
+ for(i = 0, j = this.anims.length; i < j; i++) {
+ if(this.anims[i] === animation) {
+ return this.anims.splice(i, 1);
+ }
+ }
+ },
+ clear: function(shouldStop) {
+ while(this.anims.length) {
+ var anim = this.anims.pop();
+ if(shouldStop === true) {
+ anim.stop();
+ }
+ }
+ },
+ */
+
+ /**
+ * Stops the given animation.
+ *
+ * @param id {Integer} Unique animation ID
+ * @return {Boolean} Whether the animation was stopped (aka, was running before)
+ * TODO: Requires above fix
+ stop: function(id) {
+ var cleared = running[id] != null;
+ if (cleared) {
+ running[id] = null;
+ }
+
+ return cleared;
+ },
+ */
+
+
+ /**
+ * Whether the given animation is still running.
+ *
+ * @param id {Integer} Unique animation ID
+ * @return {Boolean} Whether the animation is still running
+ isRunning: function(id) {
+ return running[id] != null;
+ },
+ */
+
+ };
+
+
+})(window);
diff --git a/js/animation/bezier.js b/js/animation/bezier.js
new file mode 100644
index 0000000000..62d86d48fa
--- /dev/null
+++ b/js/animation/bezier.js
@@ -0,0 +1,429 @@
+/*
+ * Copyright (C) 2008 Apple Inc. All Rights Reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. 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 APPLE INC. ``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 APPLE INC. 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(ionic) {
+
+ var bezierCoord = function (x,y) {
+ if(!x) x=0;
+ if(!y) y=0;
+ return {x: x, y: y};
+ };
+
+ function B1(t) { return t*t*t; }
+ function B2(t) { return 3*t*t*(1-t); }
+ function B3(t) { return 3*t*(1-t)*(1-t); }
+ function B4(t) { return (1-t)*(1-t)*(1-t); }
+
+ ionic.Animation = ionic.Animation || {}
+
+
+ /**
+ * JavaScript port of Webkit implementation of CSS cubic-bezier(p1x.p1y,p2x,p2y) by http://mck.me
+ * http://svn.webkit.org/repository/webkit/trunk/Source/WebCore/platform/graphics/UnitBezier.h
+ */
+ ionic.Animation.Bezier = (function(){
+ 'use strict';
+
+ /**
+ * Duration value to use when one is not specified (400ms is a common value).
+ * @const
+ * @type {number}
+ */
+ var DEFAULT_DURATION = 400;//ms
+
+ /**
+ * The epsilon value we pass to UnitBezier::solve given that the animation is going to run over |dur| seconds.
+ * The longer the animation, the more precision we need in the timing function result to avoid ugly discontinuities.
+ * http://svn.webkit.org/repository/webkit/trunk/Source/WebCore/page/animation/AnimationBase.cpp
+ */
+ var solveEpsilon = function(duration) {
+ return 1.0 / (200.0 * duration);
+ };
+
+ /**
+ * Defines a cubic-bezier curve given the middle two control points.
+ * NOTE: first and last control points are implicitly (0,0) and (1,1).
+ * @param p1x {number} X component of control point 1
+ * @param p1y {number} Y component of control point 1
+ * @param p2x {number} X component of control point 2
+ * @param p2y {number} Y component of control point 2
+ */
+ var unitBezier = function(p1x, p1y, p2x, p2y) {
+
+ // private members --------------------------------------------
+
+ // Calculate the polynomial coefficients, implicit first and last control points are (0,0) and (1,1).
+
+ /**
+ * X component of Bezier coefficient C
+ * @const
+ * @type {number}
+ */
+ var cx = 3.0 * p1x;
+
+ /**
+ * X component of Bezier coefficient B
+ * @const
+ * @type {number}
+ */
+ var bx = 3.0 * (p2x - p1x) - cx;
+
+ /**
+ * X component of Bezier coefficient A
+ * @const
+ * @type {number}
+ */
+ var ax = 1.0 - cx -bx;
+
+ /**
+ * Y component of Bezier coefficient C
+ * @const
+ * @type {number}
+ */
+ var cy = 3.0 * p1y;
+
+ /**
+ * Y component of Bezier coefficient B
+ * @const
+ * @type {number}
+ */
+ var by = 3.0 * (p2y - p1y) - cy;
+
+ /**
+ * Y component of Bezier coefficient A
+ * @const
+ * @type {number}
+ */
+ var ay = 1.0 - cy - by;
+
+ /**
+ * @param t {number} parametric timing value
+ * @return {number}
+ */
+ var sampleCurveX = function(t) {
+ // `ax t^3 + bx t^2 + cx t' expanded using Horner's rule.
+ return ((ax * t + bx) * t + cx) * t;
+ };
+
+ /**
+ * @param t {number} parametric timing value
+ * @return {number}
+ */
+ var sampleCurveY = function(t) {
+ return ((ay * t + by) * t + cy) * t;
+ };
+
+ /**
+ * @param t {number} parametric timing value
+ * @return {number}
+ */
+ var sampleCurveDerivativeX = function(t) {
+ return (3.0 * ax * t + 2.0 * bx) * t + cx;
+ };
+
+ /**
+ * Given an x value, find a parametric value it came from.
+ * @param x {number} value of x along the bezier curve, 0.0 <= x <= 1.0
+ * @param epsilon {number} accuracy limit of t for the given x
+ * @return {number} the t value corresponding to x
+ */
+ var solveCurveX = function(x, epsilon) {
+ var t0;
+ var t1;
+ var t2;
+ var x2;
+ var d2;
+ var i;
+
+ // First try a few iterations of Newton's method -- normally very fast.
+ for (t2 = x, i = 0; i < 8; i++) {
+ x2 = sampleCurveX(t2) - x;
+ if (Math.abs (x2) < epsilon) {
+ return t2;
+ }
+ d2 = sampleCurveDerivativeX(t2);
+ if (Math.abs(d2) < 1e-6) {
+ break;
+ }
+ t2 = t2 - x2 / d2;
+ }
+
+ // Fall back to the bisection method for reliability.
+ t0 = 0.0;
+ t1 = 1.0;
+ t2 = x;
+
+ if (t2 < t0) {
+ return t0;
+ }
+ if (t2 > t1) {
+ return t1;
+ }
+
+ while (t0 < t1) {
+ x2 = sampleCurveX(t2);
+ if (Math.abs(x2 - x) < epsilon) {
+ return t2;
+ }
+ if (x > x2) {
+ t0 = t2;
+ } else {
+ t1 = t2;
+ }
+ t2 = (t1 - t0) * 0.5 + t0;
+ }
+
+ // Failure.
+ return t2;
+ };
+
+ /**
+ * @param x {number} the value of x along the bezier curve, 0.0 <= x <= 1.0
+ * @param epsilon {number} the accuracy of t for the given x
+ * @return {number} the y value along the bezier curve
+ */
+ var solve = function(x, epsilon) {
+ return sampleCurveY(solveCurveX(x, epsilon));
+ };
+
+ // public interface --------------------------------------------
+
+ /**
+ * Find the y of the cubic-bezier for a given x with accuracy determined by the animation duration.
+ * @param x {number} the value of x along the bezier curve, 0.0 <= x <= 1.0
+ * @param duration {number} the duration of the animation in milliseconds
+ * @return {number} the y value along the bezier curve
+ */
+ return function(x, duration) {
+ return solve(x, solveEpsilon(+duration || DEFAULT_DURATION));
+ };
+ };
+
+ // http://www.w3.org/TR/css3-transitions/#transition-timing-function
+ return {
+ /**
+ * @param x {number} the value of x along the bezier curve, 0.0 <= x <= 1.0
+ * @param duration {number} the duration of the animation in milliseconds
+ * @return {number} the y value along the bezier curve
+ */
+ linear: unitBezier(0.0, 0.0, 1.0, 1.0),
+
+ /**
+ * @param x {number} the value of x along the bezier curve, 0.0 <= x <= 1.0
+ * @param duration {number} the duration of the animation in milliseconds
+ * @return {number} the y value along the bezier curve
+ */
+ ease: unitBezier(0.25, 0.1, 0.25, 1.0),
+
+ /**
+ * @param x {number} the value of x along the bezier curve, 0.0 <= x <= 1.0
+ * @param duration {number} the duration of the animation in milliseconds
+ * @return {number} the y value along the bezier curve
+ */
+ easeIn: unitBezier(0.42, 0, 1.0, 1.0),
+
+ /**
+ * @param x {number} the value of x along the bezier curve, 0.0 <= x <= 1.0
+ * @param duration {number} the duration of the animation in milliseconds
+ * @return {number} the y value along the bezier curve
+ */
+ easeOut: unitBezier(0, 0, 0.58, 1.0),
+
+ /**
+ * @param x {number} the value of x along the bezier curve, 0.0 <= x <= 1.0
+ * @param duration {number} the duration of the animation in milliseconds
+ * @return {number} the y value along the bezier curve
+ */
+ easeInOut: unitBezier(0.42, 0, 0.58, 1.0),
+
+ /**
+ * @param p1x {number} X component of control point 1
+ * @param p1y {number} Y component of control point 1
+ * @param p2x {number} X component of control point 2
+ * @param p2y {number} Y component of control point 2
+ * @param x {number} the value of x along the bezier curve, 0.0 <= x <= 1.0
+ * @param duration {number} the duration of the animation in milliseconds
+ * @return {number} the y value along the bezier curve
+ */
+ cubicBezier: function(p1x, p1y, p2x, p2y) {
+ return unitBezier(p1x, p1y, p2x, p2y);
+ }
+ };
+ })();
+
+/**
+ * Various fast approximations and alternates to cubic-bezier easing functions.
+ * http://www.w3.org/TR/css3-transitions/#transition-timing-function
+ */
+var Easing = (function(){
+ 'use strict';
+
+ /**
+ * @const
+ */
+ var EASE_IN_OUT_CONST = 0.5 * Math.pow(0.5, 1.925);
+
+ return {
+
+ /**
+ * @param x {number} the value of x along the curve, 0.0 <= x <= 1.0
+ * @return {number} the y value along the curve
+ */
+ linear: function(x) {
+ return x;
+ },
+
+// /**
+// * @param x {number} the value of x along the curve, 0.0 <= x <= 1.0
+// * @return {number} the y value along the curve
+// */
+// ease: function(x) {
+// // TODO: find fast approximations
+// return x;
+// },
+
+ /**
+ * @param x {number} the value of x along the curve, 0.0 <= x <= 1.0
+ * @return {number} the y value along the curve
+ */
+ easeInApprox: function(x) {
+ // very close approximation to cubic-bezier(0.42, 0, 1.0, 1.0)
+ return Math.pow(x, 1.685);
+ },
+
+ /**
+ * @param x {number} the value of x along the curve, 0.0 <= x <= 1.0
+ * @return {number} the y value along the curve
+ */
+ easeInQuadratic: function(x) {
+ return (x * x);
+ },
+
+ /**
+ * @param x {number} the value of x along the curve, 0.0 <= x <= 1.0
+ * @return {number} the y value along the curve
+ */
+ easeInCubic: function(x) {
+ return (x * x * x);
+ },
+
+ /**
+ * @param x {number} the value of x along the curve, 0.0 <= x <= 1.0
+ * @return {number} the y value along the curve
+ */
+ easeOutApprox: function(x) {
+ // very close approximation to cubic-bezier(0, 0, 0.58, 1.0)
+ return 1 - Math.pow(1-x, 1.685);
+ },
+
+ /**
+ * @param x {number} the value of x along the curve, 0.0 <= x <= 1.0
+ * @return {number} the y value along the curve
+ */
+ easeOutQuadratic: function(x) {
+ x -= 1;
+ return 1 - (x * x);
+ },
+
+ /**
+ * @param x {number} the value of x along the curve, 0.0 <= x <= 1.0
+ * @return {number} the y value along the curve
+ */
+ easeOutCubic: function(x) {
+ x -= 1;
+ return 1 + (x * x * x);
+ },
+
+ /**
+ * @param x {number} the value of x along the curve, 0.0 <= x <= 1.0
+ * @return {number} the y value along the curve
+ */
+ easeInOutApprox: function(x) {
+ // very close approximation to cubic-bezier(0.42, 0, 0.58, 1.0)
+ if (x < 0.5) {
+ return EASE_IN_OUT_CONST * Math.pow(x, 1.925);
+
+ } else {
+ return 1 - EASE_IN_OUT_CONST * Math.pow(1-x, 1.925);
+ }
+ },
+
+ /**
+ * @param x {number} the value of x along the curve, 0.0 <= x <= 1.0
+ * @return {number} the y value along the curve
+ */
+ easeInOutQuadratic: function(x) {
+ if (x < 0.5) {
+ return (2 * x * x);
+
+ } else {
+ x -= 1;
+ return 1 - (2 * x * x);
+ }
+ },
+
+ /**
+ * @param x {number} the value of x along the curve, 0.0 <= x <= 1.0
+ * @return {number} the y value along the curve
+ */
+ easeInOutCubic: function(x) {
+ if (x < 0.5) {
+ return (4 * x * x * x);
+
+ } else {
+ x -= 1;
+ return 1 + (4 * x * x * x);
+ }
+ },
+
+ /**
+ * @param x {number} the value of x along the curve, 0.0 <= x <= 1.0
+ * @return {number} the y value along the curve
+ */
+ easeInOutQuartic: function(x) {
+ if (x < 0.5) {
+ return (8 * x * x * x * x);
+
+ } else {
+ x -= 1;
+ return 1 + (8 * x * x * x * x);
+ }
+ },
+
+ /**
+ * @param x {number} the value of x along the curve, 0.0 <= x <= 1.0
+ * @return {number} the y value along the curve
+ */
+ easeInOutQuintic: function(x) {
+ if (x < 0.5) {
+ return (16 * x * x * x * x * x);
+
+ } else {
+ x -= 1;
+ return 1 + (16 * x * x * x * x * x);
+ }
+ }
+ };
+})();
+})(ionic);
diff --git a/js/animation/dynamics.js b/js/animation/dynamics.js
new file mode 100644
index 0000000000..7681c3c196
--- /dev/null
+++ b/js/animation/dynamics.js
@@ -0,0 +1,180 @@
+(function(window) {
+
+ /**
+ * A HUGE thank you to dynamics.js which inspired these dynamics simulations.
+ * https://github.com/michaelvillar/dynamics.js
+ *
+ * Also licensed under MIT
+ */
+
+ // Namespace
+ ionic.Animation = ionic.Animation || {};
+
+
+ ionic.Animation.Dynamics = {};
+
+ ionic.Animation.Dynamics.Spring = function(opts) {
+ var defaults = {
+ frequency: 15,
+ friction: 200,
+ anticipationStrength: 0,
+ anticipationSize: 0
+ };
+ ionic.extend(this, defaults);
+
+ var maxs = {
+ frequency: 100,
+ friction: 1000,
+ anticipationStrength: 1000,
+ anticipationSize: 99
+ };
+
+ var mins = {
+ frequency: 0,
+ friction: 1,
+ anticipationStrength: 0,
+ anticipationSize: 0
+ };
+
+ ionic.extend(this, opts);
+ };
+
+ ionic.Animation.Dynamics.Spring.prototype = {
+ at: function(t) {
+ var A, At, a, angle, b, decal, frequency, friction, frictionT, s, v, y0, yS,
+ _this = this;
+ frequency = Math.max(1, this.frequency);
+ friction = Math.pow(20, this.friction / 100);
+ s = this.anticipationSize / 100;
+ decal = Math.max(0, s);
+ frictionT = (t / (1 - s)) - (s / (1 - s));
+ if (t < s) {
+ A = function(t) {
+ var M, a, b, x0, x1;
+ M = 0.8;
+ x0 = s / (1 - s);
+ x1 = 0;
+ b = (x0 - (M * x1)) / (x0 - x1);
+ a = (M - b) / x0;
+ return (a * t * _this.anticipationStrength / 100) + b;
+ };
+ yS = (s / (1 - s)) - (s / (1 - s));
+ y0 = (0 / (1 - s)) - (s / (1 - s));
+ b = Math.acos(1 / A(yS));
+ a = (Math.acos(1 / A(y0)) - b) / (frequency * (-s));
+ } else {
+ A = function(t) {
+ return Math.pow(friction / 10, -t) * (1 - t);
+ };
+ b = 0;
+ a = 1;
+ }
+ At = A(frictionT);
+ angle = frequency * (t - s) * a + b;
+ v = 1 - (At * Math.cos(angle));
+ //return [t, v, At, frictionT, angle];
+ return v;
+ }
+ }
+
+ ionic.Animation.Dynamics.Gravity = function(opts) {
+ this.options = {
+ bounce: 40,
+ gravity: 1000,
+ initialForce: false
+ };
+ ionic.extend(this.options, opts);
+ this.curves = [];
+ this.init();
+ };
+
+ ionic.Animation.Dynamics.Gravity.prototype = {
+ length: function() {
+ var L, b, bounce, curve, gravity;
+ bounce = Math.min(this.options.bounce / 100, 80);
+ gravity = this.options.gravity / 100;
+ b = Math.sqrt(2 / gravity);
+ curve = {
+ a: -b,
+ b: b,
+ H: 1
+ };
+ if (this.options.initialForce) {
+ curve.a = 0;
+ curve.b = curve.b * 2;
+ }
+ while (curve.H > 0.001) {
+ L = curve.b - curve.a;
+ curve = {
+ a: curve.b,
+ b: curve.b + L * bounce,
+ H: curve.H * bounce * bounce
+ };
+ }
+ return curve.b;
+ },
+ init: function() {
+ var L, b, bounce, curve, gravity, _results;
+
+ L = this.length();
+ gravity = (this.options.gravity / 100) * L * L;
+ bounce = Math.min(this.options.bounce / 100, 80);
+ b = Math.sqrt(2 / gravity);
+ this.curves = [];
+ curve = {
+ a: -b,
+ b: b,
+ H: 1
+ };
+ if (this.options.initialForce) {
+ curve.a = 0;
+ curve.b = curve.b * 2;
+ }
+ this.curves.push(curve);
+ _results = [];
+ while (curve.b < 1 && curve.H > 0.001) {
+ L = curve.b - curve.a;
+ curve = {
+ a: curve.b,
+ b: curve.b + L * bounce,
+ H: curve.H * bounce * bounce
+ };
+ _results.push(this.curves.push(curve));
+ }
+ return _results;
+ },
+ curve: function(a, b, H, t){
+
+ var L, c, t2;
+ L = b - a;
+ t2 = (2 / L) * t - 1 - (a * 2 / L);
+ c = t2 * t2 * H - H + 1;
+ if (this.initialForce) {
+ c = 1 - c;
+ }
+ return c;
+ },
+ at: function(t) {
+ var bounce, curve, gravity, i, v;
+ bounce = this.options.bounce / 100;
+ gravity = this.options.gravity;
+ i = 0;
+ curve = this.curves[i];
+ while (!(t >= curve.a && t <= curve.b)) {
+ i += 1;
+ curve = this.curves[i];
+ if (!curve) {
+ break;
+ }
+ }
+ if (!curve) {
+ v = this.options.initialForce ? 0 : 1;
+ } else {
+ v = this.curve(curve.a, curve.b, curve.H, t);
+ }
+ //return [t, v];
+ return v;
+ }
+
+ }
+})(window);
diff --git a/js/animation/gl-matrix.js b/js/animation/gl-matrix.js
new file mode 100644
index 0000000000..3965a55df3
--- /dev/null
+++ b/js/animation/gl-matrix.js
@@ -0,0 +1,4248 @@
+/**
+ * @fileoverview gl-matrix - High performance matrix and vector operations
+ * @author Brandon Jones
+ * @author Colin MacKenzie IV
+ * @version 2.2.1
+ */
+
+/* Copyright (c) 2013, 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(_global) {
+ "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 = typeof(window) !== 'undefined' ? window : _global;
+ }
+ }
+ else {
+ // gl-matrix lives in commonjs, define its namespaces in exports
+ shim.exports = exports;
+ }
+
+ (function(exports) {
+ /* Copyright (c) 2013, 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. */
+
+
+if(!GLMAT_EPSILON) {
+ var GLMAT_EPSILON = 0.000001;
+}
+
+if(!GLMAT_ARRAY_TYPE) {
+ var GLMAT_ARRAY_TYPE = (typeof Float32Array !== 'undefined') ? Float32Array : Array;
+}
+
+if(!GLMAT_RANDOM) {
+ var GLMAT_RANDOM = Math.random;
+}
+
+/**
+ * @class Common utilities
+ * @name glMatrix
+ */
+var glMatrix = {};
+
+/**
+ * Sets the type of array used when creating new vectors and matricies
+ *
+ * @param {Type} type Array type, such as Float32Array or Array
+ */
+glMatrix.setMatrixArrayType = function(type) {
+ GLMAT_ARRAY_TYPE = type;
+}
+
+if(typeof(exports) !== 'undefined') {
+ exports.glMatrix = glMatrix;
+}
+
+var degree = Math.PI / 180;
+
+/**
+* Convert Degree To Radian
+*
+* @param {Number} Angle in Degrees
+*/
+glMatrix.toRadian = function(a){
+ return a * degree;
+}
+;
+/* Copyright (c) 2013, 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 = {};
+
+/**
+ * Creates a new, empty vec2
+ *
+ * @returns {vec2} a new 2D vector
+ */
+vec2.create = function() {
+ var out = new GLMAT_ARRAY_TYPE(2);
+ out[0] = 0;
+ out[1] = 0;
+ return out;
+};
+
+/**
+ * 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 GLMAT_ARRAY_TYPE(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 GLMAT_ARRAY_TYPE(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 vector b from vector a
+ *
+ * @param {vec2} out the receiving vector
+ * @param {vec2} a the first operand
+ * @param {vec2} b the second operand
+ * @returns {vec2} out
+ */
+vec2.subtract = function(out, a, b) {
+ out[0] = a[0] - b[0];
+ out[1] = a[1] - b[1];
+ return out;
+};
+
+/**
+ * Alias for {@link vec2.subtract}
+ * @function
+ */
+vec2.sub = vec2.subtract;
+
+/**
+ * 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.multiply = function(out, a, b) {
+ out[0] = a[0] * b[0];
+ out[1] = a[1] * b[1];
+ return out;
+};
+
+/**
+ * Alias for {@link vec2.multiply}
+ * @function
+ */
+vec2.mul = vec2.multiply;
+
+/**
+ * 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.divide = function(out, a, b) {
+ out[0] = a[0] / b[0];
+ out[1] = a[1] / b[1];
+ return out;
+};
+
+/**
+ * Alias for {@link vec2.divide}
+ * @function
+ */
+vec2.div = vec2.divide;
+
+/**
+ * Returns the minimum of 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.min = function(out, a, b) {
+ out[0] = Math.min(a[0], b[0]);
+ out[1] = Math.min(a[1], b[1]);
+ return out;
+};
+
+/**
+ * Returns the maximum of 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.max = function(out, a, b) {
+ out[0] = Math.max(a[0], b[0]);
+ out[1] = Math.max(a[1], b[1]);
+ return out;
+};
+
+/**
+ * Scales a vec2 by a scalar number
+ *
+ * @param {vec2} out the receiving vector
+ * @param {vec2} a the vector to scale
+ * @param {Number} b amount to scale the vector by
+ * @returns {vec2} out
+ */
+vec2.scale = function(out, a, b) {
+ out[0] = a[0] * b;
+ out[1] = a[1] * b;
+ return out;
+};
+
+/**
+ * Adds two vec2's after scaling the second operand by a scalar value
+ *
+ * @param {vec2} out the receiving vector
+ * @param {vec2} a the first operand
+ * @param {vec2} b the second operand
+ * @param {Number} scale the amount to scale b by before adding
+ * @returns {vec2} out
+ */
+vec2.scaleAndAdd = function(out, a, b, scale) {
+ out[0] = a[0] + (b[0] * scale);
+ out[1] = a[1] + (b[1] * scale);
+ return out;
+};
+
+/**
+ * Calculates the euclidian distance between two vec2's
+ *
+ * @param {vec2} a the first operand
+ * @param {vec2} b the second operand
+ * @returns {Number} distance between a and b
+ */
+vec2.distance = function(a, b) {
+ var x = b[0] - a[0],
+ y = b[1] - a[1];
+ return Math.sqrt(x*x + y*y);
+};
+
+/**
+ * Alias for {@link vec2.distance}
+ * @function
+ */
+vec2.dist = vec2.distance;
+
+/**
+ * Calculates the squared euclidian distance between two vec2's
+ *
+ * @param {vec2} a the first operand
+ * @param {vec2} b the second operand
+ * @returns {Number} squared distance between a and b
+ */
+vec2.squaredDistance = function(a, b) {
+ var x = b[0] - a[0],
+ y = b[1] - a[1];
+ return x*x + y*y;
+};
+
+/**
+ * Alias for {@link vec2.squaredDistance}
+ * @function
+ */
+vec2.sqrDist = vec2.squaredDistance;
+
+/**
+ * Calculates the length of a vec2
+ *
+ * @param {vec2} a vector to calculate length of
+ * @returns {Number} length of a
+ */
+vec2.length = function (a) {
+ var x = a[0],
+ y = a[1];
+ return Math.sqrt(x*x + y*y);
+};
+
+/**
+ * Alias for {@link vec2.length}
+ * @function
+ */
+vec2.len = vec2.length;
+
+/**
+ * Calculates the squared length of a vec2
+ *
+ * @param {vec2} a vector to calculate squared length of
+ * @returns {Number} squared length of a
+ */
+vec2.squaredLength = function (a) {
+ var x = a[0],
+ y = a[1];
+ return x*x + y*y;
+};
+
+/**
+ * Alias for {@link vec2.squaredLength}
+ * @function
+ */
+vec2.sqrLen = vec2.squaredLength;
+
+/**
+ * Negates the components of a vec2
+ *
+ * @param {vec2} out the receiving vector
+ * @param {vec2} a vector to negate
+ * @returns {vec2} out
+ */
+vec2.negate = function(out, a) {
+ out[0] = -a[0];
+ out[1] = -a[1];
+ return out;
+};
+
+/**
+ * Normalize a vec2
+ *
+ * @param {vec2} out the receiving vector
+ * @param {vec2} a vector to normalize
+ * @returns {vec2} out
+ */
+vec2.normalize = function(out, a) {
+ var x = a[0],
+ y = a[1];
+ var len = x*x + y*y;
+ if (len > 0) {
+ //TODO: evaluate use of glm_invsqrt here?
+ len = 1 / Math.sqrt(len);
+ out[0] = a[0] * len;
+ out[1] = a[1] * len;
+ }
+ return out;
+};
+
+/**
+ * Calculates the dot product of two vec2's
+ *
+ * @param {vec2} a the first operand
+ * @param {vec2} b the second operand
+ * @returns {Number} dot product of a and b
+ */
+vec2.dot = function (a, b) {
+ return a[0] * b[0] + a[1] * b[1];
+};
+
+/**
+ * Computes the cross product of two vec2's
+ * Note that the cross product must by definition produce a 3D vector
+ *
+ * @param {vec3} out the receiving vector
+ * @param {vec2} a the first operand
+ * @param {vec2} b the second operand
+ * @returns {vec3} out
+ */
+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;
+};
+
+/**
+ * Performs a linear interpolation between two vec2's
+ *
+ * @param {vec2} out the receiving vector
+ * @param {vec2} a the first operand
+ * @param {vec2} b the second operand
+ * @param {Number} t interpolation amount between the two inputs
+ * @returns {vec2} 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;
+};
+
+/**
+ * Generates a random vector with the given scale
+ *
+ * @param {vec2} out the receiving vector
+ * @param {Number} [scale] Length of the resulting vector. If ommitted, a unit vector will be returned
+ * @returns {vec2} out
+ */
+vec2.random = function (out, scale) {
+ scale = scale || 1.0;
+ var r = GLMAT_RANDOM() * 2.0 * Math.PI;
+ out[0] = Math.cos(r) * scale;
+ out[1] = Math.sin(r) * scale;
+ return out;
+};
+
+/**
+ * Transforms the vec2 with a mat2
+ *
+ * @param {vec2} out the receiving vector
+ * @param {vec2} a the vector to transform
+ * @param {mat2} m matrix to transform with
+ * @returns {vec2} out
+ */
+vec2.transformMat2 = function(out, a, m) {
+ var x = a[0],
+ y = a[1];
+ out[0] = m[0] * x + m[2] * y;
+ out[1] = m[1] * x + m[3] * y;
+ return out;
+};
+
+/**
+ * Transforms the vec2 with a mat2d
+ *
+ * @param {vec2} out the receiving vector
+ * @param {vec2} a the vector to transform
+ * @param {mat2d} m matrix to transform with
+ * @returns {vec2} out
+ */
+vec2.transformMat2d = function(out, a, m) {
+ var x = a[0],
+ y = a[1];
+ out[0] = m[0] * x + m[2] * y + m[4];
+ out[1] = m[1] * x + m[3] * y + m[5];
+ return out;
+};
+
+/**
+ * Transforms the vec2 with a mat3
+ * 3rd vector component is implicitly '1'
+ *
+ * @param {vec2} out the receiving vector
+ * @param {vec2} a the vector to transform
+ * @param {mat3} m matrix to transform with
+ * @returns {vec2} out
+ */
+vec2.transformMat3 = function(out, a, m) {
+ var x = a[0],
+ y = a[1];
+ out[0] = m[0] * x + m[3] * y + m[6];
+ out[1] = m[1] * x + m[4] * y + m[7];
+ return out;
+};
+
+/**
+ * Transforms the vec2 with a mat4
+ * 3rd vector component is implicitly '0'
+ * 4th vector component is implicitly '1'
+ *
+ * @param {vec2} out the receiving vector
+ * @param {vec2} a the vector to transform
+ * @param {mat4} m matrix to transform with
+ * @returns {vec2} out
+ */
+vec2.transformMat4 = function(out, a, m) {
+ var x = a[0],
+ y = a[1];
+ out[0] = m[0] * x + m[4] * y + m[12];
+ out[1] = m[1] * x + m[5] * y + m[13];
+ return out;
+};
+
+/**
+ * Perform some operation over an array of vec2s.
+ *
+ * @param {Array} a the array of vectors to iterate over
+ * @param {Number} stride Number of elements between the start of each vec2. If 0 assumes tightly packed
+ * @param {Number} offset Number of elements to skip at the beginning of the array
+ * @param {Number} count Number of vec2s to iterate over. If 0 iterates over entire array
+ * @param {Function} fn Function to call for each vector in the array
+ * @param {Object} [arg] additional argument to pass to fn
+ * @returns {Array} a
+ * @function
+ */
+vec2.forEach = (function() {
+ var vec = vec2.create();
+
+ 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;
+ };
+})();
+
+/**
+ * Returns a string representation of a vector
+ *
+ * @param {vec2} vec vector to represent as a string
+ * @returns {String} string representation of the vector
+ */
+vec2.str = function (a) {
+ return 'vec2(' + a[0] + ', ' + a[1] + ')';
+};
+
+if(typeof(exports) !== 'undefined') {
+ exports.vec2 = vec2;
+}
+;
+/* Copyright (c) 2013, 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 3 Dimensional Vector
+ * @name vec3
+ */
+
+var vec3 = {};
+
+/**
+ * Creates a new, empty vec3
+ *
+ * @returns {vec3} a new 3D vector
+ */
+vec3.create = function() {
+ var out = new GLMAT_ARRAY_TYPE(3);
+ out[0] = 0;
+ out[1] = 0;
+ out[2] = 0;
+ return out;
+};
+
+/**
+ * Creates a new vec3 initialized with values from an existing vector
+ *
+ * @param {vec3} a vector to clone
+ * @returns {vec3} a new 3D vector
+ */
+vec3.clone = function(a) {
+ var out = new GLMAT_ARRAY_TYPE(3);
+ out[0] = a[0];
+ out[1] = a[1];
+ out[2] = a[2];
+ return out;
+};
+
+/**
+ * Creates a new vec3 initialized with the given values
+ *
+ * @param {Number} x X component
+ * @param {Number} y Y component
+ * @param {Number} z Z component
+ * @returns {vec3} a new 3D vector
+ */
+vec3.fromValues = function(x, y, z) {
+ var out = new GLMAT_ARRAY_TYPE(3);
+ out[0] = x;
+ out[1] = y;
+ out[2] = z;
+ return out;
+};
+
+/**
+ * Copy the values from one vec3 to another
+ *
+ * @param {vec3} out the receiving vector
+ * @param {vec3} a the source vector
+ * @returns {vec3} out
+ */
+vec3.copy = function(out, a) {
+ out[0] = a[0];
+ out[1] = a[1];
+ out[2] = a[2];
+ return out;
+};
+
+/**
+ * Set the components of a vec3 to the given values
+ *
+ * @param {vec3} out the receiving vector
+ * @param {Number} x X component
+ * @param {Number} y Y component
+ * @param {Number} z Z component
+ * @returns {vec3} out
+ */
+vec3.set = function(out, x, y, z) {
+ out[0] = x;
+ out[1] = y;
+ out[2] = z;
+ return out;
+};
+
+/**
+ * Adds two vec3's
+ *
+ * @param {vec3} out the receiving vector
+ * @param {vec3} a the first operand
+ * @param {vec3} b the second operand
+ * @returns {vec3} 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;
+};
+
+/**
+ * Subtracts vector b from vector a
+ *
+ * @param {vec3} out the receiving vector
+ * @param {vec3} a the first operand
+ * @param {vec3} b the second operand
+ * @returns {vec3} out
+ */
+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;
+};
+
+/**
+ * Alias for {@link vec3.subtract}
+ * @function
+ */
+vec3.sub = vec3.subtract;
+
+/**
+ * Multiplies two vec3's
+ *
+ * @param {vec3} out the receiving vector
+ * @param {vec3} a the first operand
+ * @param {vec3} b the second operand
+ * @returns {vec3} out
+ */
+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;
+};
+
+/**
+ * Alias for {@link vec3.multiply}
+ * @function
+ */
+vec3.mul = vec3.multiply;
+
+/**
+ * Divides two vec3's
+ *
+ * @param {vec3} out the receiving vector
+ * @param {vec3} a the first operand
+ * @param {vec3} b the second operand
+ * @returns {vec3} out
+ */
+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;
+};
+
+/**
+ * Alias for {@link vec3.divide}
+ * @function
+ */
+vec3.div = vec3.divide;
+
+/**
+ * Returns the minimum of two vec3's
+ *
+ * @param {vec3} out the receiving vector
+ * @param {vec3} a the first operand
+ * @param {vec3} b the second operand
+ * @returns {vec3} 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;
+};
+
+/**
+ * Returns the maximum of two vec3's
+ *
+ * @param {vec3} out the receiving vector
+ * @param {vec3} a the first operand
+ * @param {vec3} b the second operand
+ * @returns {vec3} 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;
+};
+
+/**
+ * Scales a vec3 by a scalar number
+ *
+ * @param {vec3} out the receiving vector
+ * @param {vec3} a the vector to scale
+ * @param {Number} b amount to scale the vector by
+ * @returns {vec3} out
+ */
+vec3.scale = function(out, a, b) {
+ out[0] = a[0] * b;
+ out[1] = a[1] * b;
+ out[2] = a[2] * b;
+ return out;
+};
+
+/**
+ * Adds two vec3's after scaling the second operand by a scalar value
+ *
+ * @param {vec3} out the receiving vector
+ * @param {vec3} a the first operand
+ * @param {vec3} b the second operand
+ * @param {Number} scale the amount to scale b by before adding
+ * @returns {vec3} out
+ */
+vec3.scaleAndAdd = function(out, a, b, scale) {
+ out[0] = a[0] + (b[0] * scale);
+ out[1] = a[1] + (b[1] * scale);
+ out[2] = a[2] + (b[2] * scale);
+ return out;
+};
+
+/**
+ * Calculates the euclidian distance between two vec3's
+ *
+ * @param {vec3} a the first operand
+ * @param {vec3} b the second operand
+ * @returns {Number} distance between a and b
+ */
+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);
+};
+
+/**
+ * Alias for {@link vec3.distance}
+ * @function
+ */
+vec3.dist = vec3.distance;
+
+/**
+ * Calculates the squared euclidian distance between two vec3's
+ *
+ * @param {vec3} a the first operand
+ * @param {vec3} b the second operand
+ * @returns {Number} squared distance between a and b
+ */
+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;
+};
+
+/**
+ * Alias for {@link vec3.squaredDistance}
+ * @function
+ */
+vec3.sqrDist = vec3.squaredDistance;
+
+/**
+ * Calculates the length of a vec3
+ *
+ * @param {vec3} a vector to calculate length of
+ * @returns {Number} length of a
+ */
+vec3.length = function (a) {
+ var x = a[0],
+ y = a[1],
+ z = a[2];
+ return Math.sqrt(x*x + y*y + z*z);
+};
+
+/**
+ * Alias for {@link vec3.length}
+ * @function
+ */
+vec3.len = vec3.length;
+
+/**
+ * Calculates the squared length of a vec3
+ *
+ * @param {vec3} a vector to calculate squared length of
+ * @returns {Number} squared length of a
+ */
+vec3.squaredLength = function (a) {
+ var x = a[0],
+ y = a[1],
+ z = a[2];
+ return x*x + y*y + z*z;
+};
+
+/**
+ * Alias for {@link vec3.squaredLength}
+ * @function
+ */
+vec3.sqrLen = vec3.squaredLength;
+
+/**
+ * Negates the components of a vec3
+ *
+ * @param {vec3} out the receiving vector
+ * @param {vec3} a vector to negate
+ * @returns {vec3} out
+ */
+vec3.negate = function(out, a) {
+ out[0] = -a[0];
+ out[1] = -a[1];
+ out[2] = -a[2];
+ return out;
+};
+
+/**
+ * Normalize a vec3
+ *
+ * @param {vec3} out the receiving vector
+ * @param {vec3} a vector to normalize
+ * @returns {vec3} 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) {
+ //TODO: evaluate use of glm_invsqrt here?
+ len = 1 / Math.sqrt(len);
+ out[0] = a[0] * len;
+ out[1] = a[1] * len;
+ out[2] = a[2] * len;
+ }
+ return out;
+};
+
+/**
+ * Calculates the dot product of two vec3's
+ *
+ * @param {vec3} a the first operand
+ * @param {vec3} b the second operand
+ * @returns {Number} dot product of a and b
+ */
+vec3.dot = function (a, b) {
+ return a[0] * b[0] + a[1] * b[1] + a[2] * b[2];
+};
+
+/**
+ * Computes the cross product of two vec3's
+ *
+ * @param {vec3} out the receiving vector
+ * @param {vec3} a the first operand
+ * @param {vec3} b the second operand
+ * @returns {vec3} out
+ */
+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;
+};
+
+/**
+ * Performs a linear interpolation between two vec3's
+ *
+ * @param {vec3} out the receiving vector
+ * @param {vec3} a the first operand
+ * @param {vec3} b the second operand
+ * @param {Number} t interpolation amount between the two inputs
+ * @returns {vec3} 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;
+};
+
+/**
+ * Generates a random vector with the given scale
+ *
+ * @param {vec3} out the receiving vector
+ * @param {Number} [scale] Length of the resulting vector. If ommitted, a unit vector will be returned
+ * @returns {vec3} out
+ */
+vec3.random = function (out, scale) {
+ scale = scale || 1.0;
+
+ var r = GLMAT_RANDOM() * 2.0 * Math.PI;
+ var z = (GLMAT_RANDOM() * 2.0) - 1.0;
+ var zScale = Math.sqrt(1.0-z*z) * scale;
+
+ out[0] = Math.cos(r) * zScale;
+ out[1] = Math.sin(r) * zScale;
+ out[2] = z * scale;
+ return out;
+};
+
+/**
+ * Transforms the vec3 with a mat4.
+ * 4th vector component is implicitly '1'
+ *
+ * @param {vec3} out the receiving vector
+ * @param {vec3} a the vector to transform
+ * @param {mat4} m matrix to transform with
+ * @returns {vec3} 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;
+};
+
+/**
+ * Transforms the vec3 with a mat3.
+ *
+ * @param {vec3} out the receiving vector
+ * @param {vec3} a the vector to transform
+ * @param {mat4} m the 3x3 matrix to transform with
+ * @returns {vec3} out
+ */
+vec3.transformMat3 = function(out, a, m) {
+ var x = a[0], y = a[1], z = a[2];
+ out[0] = x * m[0] + y * m[3] + z * m[6];
+ out[1] = x * m[1] + y * m[4] + z * m[7];
+ out[2] = x * m[2] + y * m[5] + z * m[8];
+ return out;
+};
+
+/**
+ * Transforms the vec3 with a quat
+ *
+ * @param {vec3} out the receiving vector
+ * @param {vec3} a the vector to transform
+ * @param {quat} q quaternion to transform with
+ * @returns {vec3} out
+ */
+vec3.transformQuat = function(out, a, q) {
+ // benchmarks: http://jsperf.com/quaternion-transform-vec3-implementations
+
+ var x = a[0], y = a[1], z = a[2],
+ qx = q[0], qy = q[1], qz = q[2], qw = q[3],
+
+ // calculate quat * vec
+ 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;
+
+ // calculate result * inverse quat
+ 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;
+};
+
+/*
+* Rotate a 3D vector around the x-axis
+* @param {vec3} out The receiving vec3
+* @param {vec3} a The vec3 point to rotate
+* @param {vec3} b The origin of the rotation
+* @param {Number} c The angle of rotation
+* @returns {vec3} out
+*/
+vec3.rotateX = function(out, a, b, c){
+ var p = [], r=[];
+ //Translate point to the origin
+ p[0] = a[0] - b[0];
+ p[1] = a[1] - b[1];
+ p[2] = a[2] - b[2];
+
+ //perform rotation
+ r[0] = p[0];
+ r[1] = p[1]*Math.cos(c) - p[2]*Math.sin(c);
+ r[2] = p[1]*Math.sin(c) + p[2]*Math.cos(c);
+
+ //translate to correct position
+ out[0] = r[0] + b[0];
+ out[1] = r[1] + b[1];
+ out[2] = r[2] + b[2];
+
+ return out;
+};
+
+/*
+* Rotate a 3D vector around the y-axis
+* @param {vec3} out The receiving vec3
+* @param {vec3} a The vec3 point to rotate
+* @param {vec3} b The origin of the rotation
+* @param {Number} c The angle of rotation
+* @returns {vec3} out
+*/
+vec3.rotateY = function(out, a, b, c){
+ var p = [], r=[];
+ //Translate point to the origin
+ p[0] = a[0] - b[0];
+ p[1] = a[1] - b[1];
+ p[2] = a[2] - b[2];
+
+ //perform rotation
+ r[0] = p[2]*Math.sin(c) + p[0]*Math.cos(c);
+ r[1] = p[1];
+ r[2] = p[2]*Math.cos(c) - p[0]*Math.sin(c);
+
+ //translate to correct position
+ out[0] = r[0] + b[0];
+ out[1] = r[1] + b[1];
+ out[2] = r[2] + b[2];
+
+ return out;
+};
+
+/*
+* Rotate a 3D vector around the z-axis
+* @param {vec3} out The receiving vec3
+* @param {vec3} a The vec3 point to rotate
+* @param {vec3} b The origin of the rotation
+* @param {Number} c The angle of rotation
+* @returns {vec3} out
+*/
+vec3.rotateZ = function(out, a, b, c){
+ var p = [], r=[];
+ //Translate point to the origin
+ p[0] = a[0] - b[0];
+ p[1] = a[1] - b[1];
+ p[2] = a[2] - b[2];
+
+ //perform rotation
+ r[0] = p[0]*Math.cos(c) - p[1]*Math.sin(c);
+ r[1] = p[0]*Math.sin(c) + p[1]*Math.cos(c);
+ r[2] = p[2];
+
+ //translate to correct position
+ out[0] = r[0] + b[0];
+ out[1] = r[1] + b[1];
+ out[2] = r[2] + b[2];
+
+ return out;
+};
+
+/**
+ * Perform some operation over an array of vec3s.
+ *
+ * @param {Array} a the array of vectors to iterate over
+ * @param {Number} stride Number of elements between the start of each vec3. If 0 assumes tightly packed
+ * @param {Number} offset Number of elements to skip at the beginning of the array
+ * @param {Number} count Number of vec3s to iterate over. If 0 iterates over entire array
+ * @param {Function} fn Function to call for each vector in the array
+ * @param {Object} [arg] additional argument to pass to fn
+ * @returns {Array} a
+ * @function
+ */
+vec3.forEach = (function() {
+ var vec = vec3.create();
+
+ 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;
+ };
+})();
+
+/**
+ * Returns a string representation of a vector
+ *
+ * @param {vec3} vec vector to represent as a string
+ * @returns {String} string representation of the vector
+ */
+vec3.str = function (a) {
+ return 'vec3(' + a[0] + ', ' + a[1] + ', ' + a[2] + ')';
+};
+
+if(typeof(exports) !== 'undefined') {
+ exports.vec3 = vec3;
+}
+;
+/* Copyright (c) 2013, 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 4 Dimensional Vector
+ * @name vec4
+ */
+
+var vec4 = {};
+
+/**
+ * Creates a new, empty vec4
+ *
+ * @returns {vec4} a new 4D vector
+ */
+vec4.create = function() {
+ var out = new GLMAT_ARRAY_TYPE(4);
+ out[0] = 0;
+ out[1] = 0;
+ out[2] = 0;
+ out[3] = 0;
+ return out;
+};
+
+/**
+ * Creates a new vec4 initialized with values from an existing vector
+ *
+ * @param {vec4} a vector to clone
+ * @returns {vec4} a new 4D vector
+ */
+vec4.clone = function(a) {
+ var out = new GLMAT_ARRAY_TYPE(4);
+ out[0] = a[0];
+ out[1] = a[1];
+ out[2] = a[2];
+ out[3] = a[3];
+ return out;
+};
+
+/**
+ * Creates a new vec4 initialized with the given values
+ *
+ * @param {Number} x X component
+ * @param {Number} y Y component
+ * @param {Number} z Z component
+ * @param {Number} w W component
+ * @returns {vec4} a new 4D vector
+ */
+vec4.fromValues = function(x, y, z, w) {
+ var out = new GLMAT_ARRAY_TYPE(4);
+ out[0] = x;
+ out[1] = y;
+ out[2] = z;
+ out[3] = w;
+ return out;
+};
+
+/**
+ * Copy the values from one vec4 to another
+ *
+ * @param {vec4} out the receiving vector
+ * @param {vec4} a the source vector
+ * @returns {vec4} out
+ */
+vec4.copy = function(out, a) {
+ out[0] = a[0];
+ out[1] = a[1];
+ out[2] = a[2];
+ out[3] = a[3];
+ return out;
+};
+
+/**
+ * Set the components of a vec4 to the given values
+ *
+ * @param {vec4} out the receiving vector
+ * @param {Number} x X component
+ * @param {Number} y Y component
+ * @param {Number} z Z component
+ * @param {Number} w W component
+ * @returns {vec4} out
+ */
+vec4.set = function(out, x, y, z, w) {
+ out[0] = x;
+ out[1] = y;
+ out[2] = z;
+ out[3] = w;
+ return out;
+};
+
+/**
+ * Adds two vec4's
+ *
+ * @param {vec4} out the receiving vector
+ * @param {vec4} a the first operand
+ * @param {vec4} b the second operand
+ * @returns {vec4} 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;
+};
+
+/**
+ * Subtracts vector b from vector a
+ *
+ * @param {vec4} out the receiving vector
+ * @param {vec4} a the first operand
+ * @param {vec4} b the second operand
+ * @returns {vec4} out
+ */
+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;
+};
+
+/**
+ * Alias for {@link vec4.subtract}
+ * @function
+ */
+vec4.sub = vec4.subtract;
+
+/**
+ * Multiplies two vec4's
+ *
+ * @param {vec4} out the receiving vector
+ * @param {vec4} a the first operand
+ * @param {vec4} b the second operand
+ * @returns {vec4} out
+ */
+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;
+};
+
+/**
+ * Alias for {@link vec4.multiply}
+ * @function
+ */
+vec4.mul = vec4.multiply;
+
+/**
+ * Divides two vec4's
+ *
+ * @param {vec4} out the receiving vector
+ * @param {vec4} a the first operand
+ * @param {vec4} b the second operand
+ * @returns {vec4} out
+ */
+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;
+};
+
+/**
+ * Alias for {@link vec4.divide}
+ * @function
+ */
+vec4.div = vec4.divide;
+
+/**
+ * Returns the minimum of two vec4's
+ *
+ * @param {vec4} out the receiving vector
+ * @param {vec4} a the first operand
+ * @param {vec4} b the second operand
+ * @returns {vec4} 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;
+};
+
+/**
+ * Returns the maximum of two vec4's
+ *
+ * @param {vec4} out the receiving vector
+ * @param {vec4} a the first operand
+ * @param {vec4} b the second operand
+ * @returns {vec4} 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;
+};
+
+/**
+ * Scales a vec4 by a scalar number
+ *
+ * @param {vec4} out the receiving vector
+ * @param {vec4} a the vector to scale
+ * @param {Number} b amount to scale the vector by
+ * @returns {vec4} 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;
+};
+
+/**
+ * Adds two vec4's after scaling the second operand by a scalar value
+ *
+ * @param {vec4} out the receiving vector
+ * @param {vec4} a the first operand
+ * @param {vec4} b the second operand
+ * @param {Number} scale the amount to scale b by before adding
+ * @returns {vec4} out
+ */
+vec4.scaleAndAdd = function(out, a, b, scale) {
+ out[0] = a[0] + (b[0] * scale);
+ out[1] = a[1] + (b[1] * scale);
+ out[2] = a[2] + (b[2] * scale);
+ out[3] = a[3] + (b[3] * scale);
+ return out;
+};
+
+/**
+ * Calculates the euclidian distance between two vec4's
+ *
+ * @param {vec4} a the first operand
+ * @param {vec4} b the second operand
+ * @returns {Number} distance between a and b
+ */
+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);
+};
+
+/**
+ * Alias for {@link vec4.distance}
+ * @function
+ */
+vec4.dist = vec4.distance;
+
+/**
+ * Calculates the squared euclidian distance between two vec4's
+ *
+ * @param {vec4} a the first operand
+ * @param {vec4} b the second operand
+ * @returns {Number} squared distance between a and b
+ */
+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;
+};
+
+/**
+ * Alias for {@link vec4.squaredDistance}
+ * @function
+ */
+vec4.sqrDist = vec4.squaredDistance;
+
+/**
+ * Calculates the length of a vec4
+ *
+ * @param {vec4} a vector to calculate length of
+ * @returns {Number} length of a
+ */
+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);
+};
+
+/**
+ * Alias for {@link vec4.length}
+ * @function
+ */
+vec4.len = vec4.length;
+
+/**
+ * Calculates the squared length of a vec4
+ *
+ * @param {vec4} a vector to calculate squared length of
+ * @returns {Number} squared length of a
+ */
+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;
+};
+
+/**
+ * Alias for {@link vec4.squaredLength}
+ * @function
+ */
+vec4.sqrLen = vec4.squaredLength;
+
+/**
+ * Negates the components of a vec4
+ *
+ * @param {vec4} out the receiving vector
+ * @param {vec4} a vector to negate
+ * @returns {vec4} out
+ */
+vec4.negate = function(out, a) {
+ out[0] = -a[0];
+ out[1] = -a[1];
+ out[2] = -a[2];
+ out[3] = -a[3];
+ return out;
+};
+
+/**
+ * Normalize a vec4
+ *
+ * @param {vec4} out the receiving vector
+ * @param {vec4} a vector to normalize
+ * @returns {vec4} 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;
+};
+
+/**
+ * Calculates the dot product of two vec4's
+ *
+ * @param {vec4} a the first operand
+ * @param {vec4} b the second operand
+ * @returns {Number} dot product of a and b
+ */
+vec4.dot = function (a, b) {
+ return a[0] * b[0] + a[1] * b[1] + a[2] * b[2] + a[3] * b[3];
+};
+
+/**
+ * Performs a linear interpolation between two vec4's
+ *
+ * @param {vec4} out the receiving vector
+ * @param {vec4} a the first operand
+ * @param {vec4} b the second operand
+ * @param {Number} t interpolation amount between the two inputs
+ * @returns {vec4} out
+ */
+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;
+};
+
+/**
+ * Generates a random vector with the given scale
+ *
+ * @param {vec4} out the receiving vector
+ * @param {Number} [scale] Length of the resulting vector. If ommitted, a unit vector will be returned
+ * @returns {vec4} out
+ */
+vec4.random = function (out, scale) {
+ scale = scale || 1.0;
+
+ //TODO: This is a pretty awful way of doing this. Find something better.
+ out[0] = GLMAT_RANDOM();
+ out[1] = GLMAT_RANDOM();
+ out[2] = GLMAT_RANDOM();
+ out[3] = GLMAT_RANDOM();
+ vec4.normalize(out, out);
+ vec4.scale(out, out, scale);
+ return out;
+};
+
+/**
+ * Transforms the vec4 with a mat4.
+ *
+ * @param {vec4} out the receiving vector
+ * @param {vec4} a the vector to transform
+ * @param {mat4} m matrix to transform with
+ * @returns {vec4} 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;
+};
+
+/**
+ * Transforms the vec4 with a quat
+ *
+ * @param {vec4} out the receiving vector
+ * @param {vec4} a the vector to transform
+ * @param {quat} q quaternion to transform with
+ * @returns {vec4} 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],
+
+ // calculate quat * vec
+ 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;
+
+ // calculate result * inverse quat
+ 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;
+};
+
+/**
+ * Perform some operation over an array of vec4s.
+ *
+ * @param {Array} a the array of vectors to iterate over
+ * @param {Number} stride Number of elements between the start of each vec4. If 0 assumes tightly packed
+ * @param {Number} offset Number of elements to skip at the beginning of the array
+ * @param {Number} count Number of vec2s to iterate over. If 0 iterates over entire array
+ * @param {Function} fn Function to call for each vector in the array
+ * @param {Object} [arg] additional argument to pass to fn
+ * @returns {Array} a
+ * @function
+ */
+vec4.forEach = (function() {
+ var vec = vec4.create();
+
+ 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;
+ };
+})();
+
+/**
+ * Returns a string representation of a vector
+ *
+ * @param {vec4} vec vector to represent as a string
+ * @returns {String} string representation of the vector
+ */
+vec4.str = function (a) {
+ return 'vec4(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + a[3] + ')';
+};
+
+if(typeof(exports) !== 'undefined') {
+ exports.vec4 = vec4;
+}
+;
+/* Copyright (c) 2013, 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 2x2 Matrix
+ * @name mat2
+ */
+
+var mat2 = {};
+
+/**
+ * Creates a new identity mat2
+ *
+ * @returns {mat2} a new 2x2 matrix
+ */
+mat2.create = function() {
+ var out = new GLMAT_ARRAY_TYPE(4);
+ out[0] = 1;
+ out[1] = 0;
+ out[2] = 0;
+ out[3] = 1;
+ return out;
+};
+
+/**
+ * Creates a new mat2 initialized with values from an existing matrix
+ *
+ * @param {mat2} a matrix to clone
+ * @returns {mat2} a new 2x2 matrix
+ */
+mat2.clone = function(a) {
+ var out = new GLMAT_ARRAY_TYPE(4);
+ out[0] = a[0];
+ out[1] = a[1];
+ out[2] = a[2];
+ out[3] = a[3];
+ return out;
+};
+
+/**
+ * Copy the values from one mat2 to another
+ *
+ * @param {mat2} out the receiving matrix
+ * @param {mat2} a the source matrix
+ * @returns {mat2} out
+ */
+mat2.copy = function(out, a) {
+ out[0] = a[0];
+ out[1] = a[1];
+ out[2] = a[2];
+ out[3] = a[3];
+ return out;
+};
+
+/**
+ * Set a mat2 to the identity matrix
+ *
+ * @param {mat2} out the receiving matrix
+ * @returns {mat2} out
+ */
+mat2.identity = function(out) {
+ out[0] = 1;
+ out[1] = 0;
+ out[2] = 0;
+ out[3] = 1;
+ return out;
+};
+
+/**
+ * Transpose the values of a mat2
+ *
+ * @param {mat2} out the receiving matrix
+ * @param {mat2} a the source matrix
+ * @returns {mat2} out
+ */
+mat2.transpose = function(out, a) {
+ // If we are transposing ourselves we can skip a few steps but have to cache some values
+ 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;
+};
+
+/**
+ * Inverts a mat2
+ *
+ * @param {mat2} out the receiving matrix
+ * @param {mat2} a the source matrix
+ * @returns {mat2} out
+ */
+mat2.invert = function(out, a) {
+ var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3],
+
+ // Calculate the determinant
+ det = a0 * a3 - a2 * a1;
+
+ if (!det) {
+ return null;
+ }
+ det = 1.0 / det;
+
+ out[0] = a3 * det;
+ out[1] = -a1 * det;
+ out[2] = -a2 * det;
+ out[3] = a0 * det;
+
+ return out;
+};
+
+/**
+ * Calculates the adjugate of a mat2
+ *
+ * @param {mat2} out the receiving matrix
+ * @param {mat2} a the source matrix
+ * @returns {mat2} out
+ */
+mat2.adjoint = function(out, a) {
+ // Caching this value is nessecary if out == a
+ var a0 = a[0];
+ out[0] = a[3];
+ out[1] = -a[1];
+ out[2] = -a[2];
+ out[3] = a0;
+
+ return out;
+};
+
+/**
+ * Calculates the determinant of a mat2
+ *
+ * @param {mat2} a the source matrix
+ * @returns {Number} determinant of a
+ */
+mat2.determinant = function (a) {
+ return a[0] * a[3] - a[2] * a[1];
+};
+
+/**
+ * Multiplies two mat2's
+ *
+ * @param {mat2} out the receiving matrix
+ * @param {mat2} a the first operand
+ * @param {mat2} b the second operand
+ * @returns {mat2} out
+ */
+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 + a2 * b1;
+ out[1] = a1 * b0 + a3 * b1;
+ out[2] = a0 * b2 + a2 * b3;
+ out[3] = a1 * b2 + a3 * b3;
+ return out;
+};
+
+/**
+ * Alias for {@link mat2.multiply}
+ * @function
+ */
+mat2.mul = mat2.multiply;
+
+/**
+ * Rotates a mat2 by the given angle
+ *
+ * @param {mat2} out the receiving matrix
+ * @param {mat2} a the matrix to rotate
+ * @param {Number} rad the angle to rotate the matrix by
+ * @returns {mat2} 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 + a2 * s;
+ out[1] = a1 * c + a3 * s;
+ out[2] = a0 * -s + a2 * c;
+ out[3] = a1 * -s + a3 * c;
+ return out;
+};
+
+/**
+ * Scales the mat2 by the dimensions in the given vec2
+ *
+ * @param {mat2} out the receiving matrix
+ * @param {mat2} a the matrix to rotate
+ * @param {vec2} v the vec2 to scale the matrix by
+ * @returns {mat2} 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 * v0;
+ out[2] = a2 * v1;
+ out[3] = a3 * v1;
+ return out;
+};
+
+/**
+ * Returns a string representation of a mat2
+ *
+ * @param {mat2} mat matrix to represent as a string
+ * @returns {String} string representation of the matrix
+ */
+mat2.str = function (a) {
+ return 'mat2(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + a[3] + ')';
+};
+
+/**
+ * Returns Frobenius norm of a mat2
+ *
+ * @param {mat2} a the matrix to calculate Frobenius norm of
+ * @returns {Number} Frobenius norm
+ */
+mat2.frob = function (a) {
+ return(Math.sqrt(Math.pow(a[0], 2) + Math.pow(a[1], 2) + Math.pow(a[2], 2) + Math.pow(a[3], 2)))
+};
+
+/**
+ * Returns L, D and U matrices (Lower triangular, Diagonal and Upper triangular) by factorizing the input matrix
+ * @param {mat2} L the lower triangular matrix
+ * @param {mat2} D the diagonal matrix
+ * @param {mat2} U the upper triangular matrix
+ * @param {mat2} a the input matrix to factorize
+ */
+
+mat2.LDU = function (L, D, U, a) {
+ L[2] = a[2]/a[0];
+ U[0] = a[0];
+ U[1] = a[1];
+ U[3] = a[3] - L[2] * U[1];
+ return [L, D, U];
+};
+
+if(typeof(exports) !== 'undefined') {
+ exports.mat2 = mat2;
+}
+;
+/* Copyright (c) 2013, 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 2x3 Matrix
+ * @name mat2d
+ *
+ * @description
+ * A mat2d contains six elements defined as:
+ *
+ * [a, c, tx,
+ * b, d, ty]
+ *
+ * This is a short form for the 3x3 matrix:
+ *
+ * [a, c, tx,
+ * b, d, ty,
+ * 0, 0, 1]
+ *
+ * The last row is ignored so the array is shorter and operations are faster.
+ */
+
+var mat2d = {};
+
+/**
+ * Creates a new identity mat2d
+ *
+ * @returns {mat2d} a new 2x3 matrix
+ */
+mat2d.create = function() {
+ var out = new GLMAT_ARRAY_TYPE(6);
+ out[0] = 1;
+ out[1] = 0;
+ out[2] = 0;
+ out[3] = 1;
+ out[4] = 0;
+ out[5] = 0;
+ return out;
+};
+
+/**
+ * Creates a new mat2d initialized with values from an existing matrix
+ *
+ * @param {mat2d} a matrix to clone
+ * @returns {mat2d} a new 2x3 matrix
+ */
+mat2d.clone = function(a) {
+ var out = new GLMAT_ARRAY_TYPE(6);
+ out[0] = a[0];
+ out[1] = a[1];
+ out[2] = a[2];
+ out[3] = a[3];
+ out[4] = a[4];
+ out[5] = a[5];
+ return out;
+};
+
+/**
+ * Copy the values from one mat2d to another
+ *
+ * @param {mat2d} out the receiving matrix
+ * @param {mat2d} a the source matrix
+ * @returns {mat2d} out
+ */
+mat2d.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];
+ return out;
+};
+
+/**
+ * Set a mat2d to the identity matrix
+ *
+ * @param {mat2d} out the receiving matrix
+ * @returns {mat2d} out
+ */
+mat2d.identity = function(out) {
+ out[0] = 1;
+ out[1] = 0;
+ out[2] = 0;
+ out[3] = 1;
+ out[4] = 0;
+ out[5] = 0;
+ return out;
+};
+
+/**
+ * Inverts a mat2d
+ *
+ * @param {mat2d} out the receiving matrix
+ * @param {mat2d} a the source matrix
+ * @returns {mat2d} out
+ */
+mat2d.invert = function(out, a) {
+ var aa = a[0], ab = a[1], ac = a[2], ad = a[3],
+ atx = a[4], aty = a[5];
+
+ var det = aa * ad - ab * ac;
+ if(!det){
+ return null;
+ }
+ det = 1.0 / det;
+
+ out[0] = ad * det;
+ out[1] = -ab * det;
+ out[2] = -ac * det;
+ out[3] = aa * det;
+ out[4] = (ac * aty - ad * atx) * det;
+ out[5] = (ab * atx - aa * aty) * det;
+ return out;
+};
+
+/**
+ * Calculates the determinant of a mat2d
+ *
+ * @param {mat2d} a the source matrix
+ * @returns {Number} determinant of a
+ */
+mat2d.determinant = function (a) {
+ return a[0] * a[3] - a[1] * a[2];
+};
+
+/**
+ * Multiplies two mat2d's
+ *
+ * @param {mat2d} out the receiving matrix
+ * @param {mat2d} a the first operand
+ * @param {mat2d} b the second operand
+ * @returns {mat2d} out
+ */
+mat2d.multiply = function (out, a, b) {
+ var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3], a4 = a[4], a5 = a[5],
+ b0 = b[0], b1 = b[1], b2 = b[2], b3 = b[3], b4 = b[4], b5 = b[5];
+ out[0] = a0 * b0 + a2 * b1;
+ out[1] = a1 * b0 + a3 * b1;
+ out[2] = a0 * b2 + a2 * b3;
+ out[3] = a1 * b2 + a3 * b3;
+ out[4] = a0 * b4 + a2 * b5 + a4;
+ out[5] = a1 * b4 + a3 * b5 + a5;
+ return out;
+};
+
+/**
+ * Alias for {@link mat2d.multiply}
+ * @function
+ */
+mat2d.mul = mat2d.multiply;
+
+
+/**
+ * Rotates a mat2d by the given angle
+ *
+ * @param {mat2d} out the receiving matrix
+ * @param {mat2d} a the matrix to rotate
+ * @param {Number} rad the angle to rotate the matrix by
+ * @returns {mat2d} out
+ */
+mat2d.rotate = function (out, a, rad) {
+ var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3], a4 = a[4], a5 = a[5],
+ s = Math.sin(rad),
+ c = Math.cos(rad);
+ out[0] = a0 * c + a2 * s;
+ out[1] = a1 * c + a3 * s;
+ out[2] = a0 * -s + a2 * c;
+ out[3] = a1 * -s + a3 * c;
+ out[4] = a4;
+ out[5] = a5;
+ return out;
+};
+
+/**
+ * Scales the mat2d by the dimensions in the given vec2
+ *
+ * @param {mat2d} out the receiving matrix
+ * @param {mat2d} a the matrix to translate
+ * @param {vec2} v the vec2 to scale the matrix by
+ * @returns {mat2d} out
+ **/
+mat2d.scale = function(out, a, v) {
+ var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3], a4 = a[4], a5 = a[5],
+ v0 = v[0], v1 = v[1];
+ out[0] = a0 * v0;
+ out[1] = a1 * v0;
+ out[2] = a2 * v1;
+ out[3] = a3 * v1;
+ out[4] = a4;
+ out[5] = a5;
+ return out;
+};
+
+/**
+ * Translates the mat2d by the dimensions in the given vec2
+ *
+ * @param {mat2d} out the receiving matrix
+ * @param {mat2d} a the matrix to translate
+ * @param {vec2} v the vec2 to translate the matrix by
+ * @returns {mat2d} out
+ **/
+mat2d.translate = function(out, a, v) {
+ var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3], a4 = a[4], a5 = a[5],
+ v0 = v[0], v1 = v[1];
+ out[0] = a0;
+ out[1] = a1;
+ out[2] = a2;
+ out[3] = a3;
+ out[4] = a0 * v0 + a2 * v1 + a4;
+ out[5] = a1 * v0 + a3 * v1 + a5;
+ return out;
+};
+
+/**
+ * Returns a string representation of a mat2d
+ *
+ * @param {mat2d} a matrix to represent as a string
+ * @returns {String} string representation of the matrix
+ */
+mat2d.str = function (a) {
+ return 'mat2d(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' +
+ a[3] + ', ' + a[4] + ', ' + a[5] + ')';
+};
+
+/**
+ * Returns Frobenius norm of a mat2d
+ *
+ * @param {mat2d} a the matrix to calculate Frobenius norm of
+ * @returns {Number} Frobenius norm
+ */
+mat2d.frob = function (a) {
+ return(Math.sqrt(Math.pow(a[0], 2) + Math.pow(a[1], 2) + Math.pow(a[2], 2) + Math.pow(a[3], 2) + Math.pow(a[4], 2) + Math.pow(a[5], 2) + 1))
+};
+
+if(typeof(exports) !== 'undefined') {
+ exports.mat2d = mat2d;
+}
+;
+/* Copyright (c) 2013, 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 3x3 Matrix
+ * @name mat3
+ */
+
+var mat3 = {};
+
+/**
+ * Creates a new identity mat3
+ *
+ * @returns {mat3} a new 3x3 matrix
+ */
+mat3.create = function() {
+ var out = new GLMAT_ARRAY_TYPE(9);
+ 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;
+};
+
+/**
+ * Copies the upper-left 3x3 values into the given mat3.
+ *
+ * @param {mat3} out the receiving 3x3 matrix
+ * @param {mat4} a the source 4x4 matrix
+ * @returns {mat3} out
+ */
+mat3.fromMat4 = function(out, a) {
+ out[0] = a[0];
+ out[1] = a[1];
+ out[2] = a[2];
+ out[3] = a[4];
+ out[4] = a[5];
+ out[5] = a[6];
+ out[6] = a[8];
+ out[7] = a[9];
+ out[8] = a[10];
+ return out;
+};
+
+/**
+ * Creates a new mat3 initialized with values from an existing matrix
+ *
+ * @param {mat3} a matrix to clone
+ * @returns {mat3} a new 3x3 matrix
+ */
+mat3.clone = function(a) {
+ var out = new GLMAT_ARRAY_TYPE(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;
+};
+
+/**
+ * Copy the values from one mat3 to another
+ *
+ * @param {mat3} out the receiving matrix
+ * @param {mat3} a the source matrix
+ * @returns {mat3} 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;
+};
+
+/**
+ * Set a mat3 to the identity matrix
+ *
+ * @param {mat3} out the receiving matrix
+ * @returns {mat3} 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;
+};
+
+/**
+ * Transpose the values of a mat3
+ *
+ * @param {mat3} out the receiving matrix
+ * @param {mat3} a the source matrix
+ * @returns {mat3} out
+ */
+mat3.transpose = function(out, a) {
+ // If we are transposing ourselves we can skip a few steps but have to cache some values
+ 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;
+};
+
+/**
+ * Inverts a mat3
+ *
+ * @param {mat3} out the receiving matrix
+ * @param {mat3} a the source matrix
+ * @returns {mat3} 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,
+
+ // Calculate the determinant
+ det = a00 * b01 + a01 * b11 + a02 * b21;
+
+ if (!det) {
+ return null;
+ }
+ det = 1.0 / 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;
+};
+
+/**
+ * Calculates the adjugate of a mat3
+ *
+ * @param {mat3} out the receiving matrix
+ * @param {mat3} a the source matrix
+ * @returns {mat3} 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;
+};
+
+/**
+ * Calculates the determinant of a mat3
+ *
+ * @param {mat3} a the source matrix
+ * @returns {Number} determinant of a
+ */
+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);
+};
+
+/**
+ * Multiplies two mat3's
+ *
+ * @param {mat3} out the receiving matrix
+ * @param {mat3} a the first operand
+ * @param {mat3} b the second operand
+ * @returns {mat3} out
+ */
+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;
+};
+
+/**
+ * Alias for {@link mat3.multiply}
+ * @function
+ */
+mat3.mul = mat3.multiply;
+
+/**
+ * Translate a mat3 by the given vector
+ *
+ * @param {mat3} out the receiving matrix
+ * @param {mat3} a the matrix to translate
+ * @param {vec2} v vector to translate by
+ * @returns {mat3} out
+ */
+mat3.translate = function(out, a, v) {
+ 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],
+ x = v[0], y = v[1];
+
+ out[0] = a00;
+ out[1] = a01;
+ out[2] = a02;
+
+ out[3] = a10;
+ out[4] = a11;
+ out[5] = a12;
+
+ out[6] = x * a00 + y * a10 + a20;
+ out[7] = x * a01 + y * a11 + a21;
+ out[8] = x * a02 + y * a12 + a22;
+ return out;
+};
+
+/**
+ * Rotates a mat3 by the given angle
+ *
+ * @param {mat3} out the receiving matrix
+ * @param {mat3} a the matrix to rotate
+ * @param {Number} rad the angle to rotate the matrix by
+ * @returns {mat3} out
+ */
+mat3.rotate = function (out, a, rad) {
+ 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],
+
+ s = Math.sin(rad),
+ c = Math.cos(rad);
+
+ out[0] = c * a00 + s * a10;
+ out[1] = c * a01 + s * a11;
+ out[2] = c * a02 + s * a12;
+
+ out[3] = c * a10 - s * a00;
+ out[4] = c * a11 - s * a01;
+ out[5] = c * a12 - s * a02;
+
+ out[6] = a20;
+ out[7] = a21;
+ out[8] = a22;
+ return out;
+};
+
+/**
+ * Scales the mat3 by the dimensions in the given vec2
+ *
+ * @param {mat3} out the receiving matrix
+ * @param {mat3} a the matrix to rotate
+ * @param {vec2} v the vec2 to scale the matrix by
+ * @returns {mat3} out
+ **/
+mat3.scale = function(out, a, v) {
+ var x = v[0], y = v[1];
+
+ out[0] = x * a[0];
+ out[1] = x * a[1];
+ out[2] = x * a[2];
+
+ out[3] = y * a[3];
+ out[4] = y * a[4];
+ out[5] = y * a[5];
+
+ out[6] = a[6];
+ out[7] = a[7];
+ out[8] = a[8];
+ return out;
+};
+
+/**
+ * Copies the values from a mat2d into a mat3
+ *
+ * @param {mat3} out the receiving matrix
+ * @param {mat2d} a the matrix to copy
+ * @returns {mat3} out
+ **/
+mat3.fromMat2d = function(out, a) {
+ out[0] = a[0];
+ out[1] = a[1];
+ out[2] = 0;
+
+ out[3] = a[2];
+ out[4] = a[3];
+ out[5] = 0;
+
+ out[6] = a[4];
+ out[7] = a[5];
+ out[8] = 1;
+ return out;
+};
+
+/**
+* Calculates a 3x3 matrix from the given quaternion
+*
+* @param {mat3} out mat3 receiving operation result
+* @param {quat} q Quaternion to create matrix from
+*
+* @returns {mat3} out
+*/
+mat3.fromQuat = function (out, q) {
+ var x = q[0], y = q[1], z = q[2], w = q[3],
+ x2 = x + x,
+ y2 = y + y,
+ z2 = z + z,
+
+ xx = x * x2,
+ yx = y * x2,
+ yy = y * y2,
+ zx = z * x2,
+ zy = z * y2,
+ zz = z * z2,
+ wx = w * x2,
+ wy = w * y2,
+ wz = w * z2;
+
+ out[0] = 1 - yy - zz;
+ out[3] = yx - wz;
+ out[6] = zx + wy;
+
+ out[1] = yx + wz;
+ out[4] = 1 - xx - zz;
+ out[7] = zy - wx;
+
+ out[2] = zx - wy;
+ out[5] = zy + wx;
+ out[8] = 1 - xx - yy;
+
+ return out;
+};
+
+/**
+* Calculates a 3x3 normal matrix (transpose inverse) from the 4x4 matrix
+*
+* @param {mat3} out mat3 receiving operation result
+* @param {mat4} a Mat4 to derive the normal matrix from
+*
+* @returns {mat3} out
+*/
+mat3.normalFromMat4 = function (out, a) {
+ var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
+ a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
+ a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
+ a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15],
+
+ b00 = a00 * a11 - a01 * a10,
+ b01 = a00 * a12 - a02 * a10,
+ b02 = a00 * a13 - a03 * a10,
+ b03 = a01 * a12 - a02 * a11,
+ b04 = a01 * a13 - a03 * a11,
+ b05 = a02 * a13 - a03 * a12,
+ b06 = a20 * a31 - a21 * a30,
+ b07 = a20 * a32 - a22 * a30,
+ b08 = a20 * a33 - a23 * a30,
+ b09 = a21 * a32 - a22 * a31,
+ b10 = a21 * a33 - a23 * a31,
+ b11 = a22 * a33 - a23 * a32,
+
+ // Calculate the determinant
+ det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;
+
+ if (!det) {
+ return null;
+ }
+ det = 1.0 / det;
+
+ out[0] = (a11 * b11 - a12 * b10 + a13 * b09) * det;
+ out[1] = (a12 * b08 - a10 * b11 - a13 * b07) * det;
+ out[2] = (a10 * b10 - a11 * b08 + a13 * b06) * det;
+
+ out[3] = (a02 * b10 - a01 * b11 - a03 * b09) * det;
+ out[4] = (a00 * b11 - a02 * b08 + a03 * b07) * det;
+ out[5] = (a01 * b08 - a00 * b10 - a03 * b06) * det;
+
+ out[6] = (a31 * b05 - a32 * b04 + a33 * b03) * det;
+ out[7] = (a32 * b02 - a30 * b05 - a33 * b01) * det;
+ out[8] = (a30 * b04 - a31 * b02 + a33 * b00) * det;
+
+ return out;
+};
+
+/**
+ * Returns a string representation of a mat3
+ *
+ * @param {mat3} mat matrix to represent as a string
+ * @returns {String} string representation of the matrix
+ */
+mat3.str = function (a) {
+ return 'mat3(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' +
+ a[3] + ', ' + a[4] + ', ' + a[5] + ', ' +
+ a[6] + ', ' + a[7] + ', ' + a[8] + ')';
+};
+
+/**
+ * Returns Frobenius norm of a mat3
+ *
+ * @param {mat3} a the matrix to calculate Frobenius norm of
+ * @returns {Number} Frobenius norm
+ */
+mat3.frob = function (a) {
+ return(Math.sqrt(Math.pow(a[0], 2) + Math.pow(a[1], 2) + Math.pow(a[2], 2) + Math.pow(a[3], 2) + Math.pow(a[4], 2) + Math.pow(a[5], 2) + Math.pow(a[6], 2) + Math.pow(a[7], 2) + Math.pow(a[8], 2)))
+};
+
+
+if(typeof(exports) !== 'undefined') {
+ exports.mat3 = mat3;
+}
+;
+/* Copyright (c) 2013, 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 4x4 Matrix
+ * @name mat4
+ */
+
+var mat4 = {};
+
+/**
+ * Creates a new identity mat4
+ *
+ * @returns {mat4} a new 4x4 matrix
+ */
+mat4.create = function() {
+ var out = new GLMAT_ARRAY_TYPE(16);
+ out[0] = 1;
+ out[1] = 0;
+ out[2] = 0;
+ out[3] = 0;
+ out[4] = 0;
+ out[5] = 1;
+ out[6] = 0;
+ out[7] = 0;
+ out[8] = 0;
+ out[9] = 0;
+ out[10] = 1;
+ out[11] = 0;
+ out[12] = 0;
+ out[13] = 0;
+ out[14] = 0;
+ out[15] = 1;
+ return out;
+};
+
+/**
+ * Creates a new mat4 initialized with values from an existing matrix
+ *
+ * @param {mat4} a matrix to clone
+ * @returns {mat4} a new 4x4 matrix
+ */
+mat4.clone = function(a) {
+ var out = new GLMAT_ARRAY_TYPE(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;
+};
+
+/**
+ * Copy the values from one mat4 to another
+ *
+ * @param {mat4} out the receiving matrix
+ * @param {mat4} a the source matrix
+ * @returns {mat4} 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] = 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;
+};
+
+/**
+ * Set a mat4 to the identity matrix
+ *
+ * @param {mat4} out the receiving matrix
+ * @returns {mat4} out
+ */
+mat4.identity = function(out) {
+ out[0] = 1;
+ out[1] = 0;
+ out[2] = 0;
+ out[3] = 0;
+ out[4] = 0;
+ out[5] = 1;
+ out[6] = 0;
+ out[7] = 0;
+ out[8] = 0;
+ out[9] = 0;
+ out[10] = 1;
+ out[11] = 0;
+ out[12] = 0;
+ out[13] = 0;
+ out[14] = 0;
+ out[15] = 1;
+ return out;
+};
+
+/**
+ * Transpose the values of a mat4
+ *
+ * @param {mat4} out the receiving matrix
+ * @param {mat4} a the source matrix
+ * @returns {mat4} out
+ */
+mat4.transpose = function(out, a) {
+ // If we are transposing ourselves we can skip a few steps but have to cache some values
+ if (out === a) {
+ var a01 = a[1], a02 = a[2], a03 = a[3],
+ a12 = a[6], a13 = a[7],
+ a23 = a[11];
+
+ out[1] = a[4];
+ out[2] = a[8];
+ out[3] = a[12];
+ out[4] = a01;
+ out[6] = a[9];
+ out[7] = a[13];
+ out[8] = a02;
+ out[9] = a12;
+ out[11] = a[14];
+ out[12] = a03;
+ out[13] = a13;
+ out[14] = a23;
+ } else {
+ out[0] = a[0];
+ out[1] = a[4];
+ out[2] = a[8];
+ out[3] = a[12];
+ out[4] = a[1];
+ out[5] = a[5];
+ out[6] = a[9];
+ out[7] = a[13];
+ out[8] = a[2];
+ out[9] = a[6];
+ out[10] = a[10];
+ out[11] = a[14];
+ out[12] = a[3];
+ out[13] = a[7];
+ out[14] = a[11];
+ out[15] = a[15];
+ }
+
+ return out;
+};
+
+/**
+ * Inverts a mat4
+ *
+ * @param {mat4} out the receiving matrix
+ * @param {mat4} a the source matrix
+ * @returns {mat4} out
+ */
+mat4.invert = function(out, a) {
+ var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
+ a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
+ a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
+ a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15],
+
+ b00 = a00 * a11 - a01 * a10,
+ b01 = a00 * a12 - a02 * a10,
+ b02 = a00 * a13 - a03 * a10,
+ b03 = a01 * a12 - a02 * a11,
+ b04 = a01 * a13 - a03 * a11,
+ b05 = a02 * a13 - a03 * a12,
+ b06 = a20 * a31 - a21 * a30,
+ b07 = a20 * a32 - a22 * a30,
+ b08 = a20 * a33 - a23 * a30,
+ b09 = a21 * a32 - a22 * a31,
+ b10 = a21 * a33 - a23 * a31,
+ b11 = a22 * a33 - a23 * a32,
+
+ // Calculate the determinant
+ det = b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;
+
+ if (!det) {
+ return null;
+ }
+ det = 1.0 / det;
+
+ out[0] = (a11 * b11 - a12 * b10 + a13 * b09) * det;
+ out[1] = (a02 * b10 - a01 * b11 - a03 * b09) * det;
+ out[2] = (a31 * b05 - a32 * b04 + a33 * b03) * det;
+ out[3] = (a22 * b04 - a21 * b05 - a23 * b03) * det;
+ out[4] = (a12 * b08 - a10 * b11 - a13 * b07) * det;
+ out[5] = (a00 * b11 - a02 * b08 + a03 * b07) * det;
+ out[6] = (a32 * b02 - a30 * b05 - a33 * b01) * det;
+ out[7] = (a20 * b05 - a22 * b02 + a23 * b01) * det;
+ out[8] = (a10 * b10 - a11 * b08 + a13 * b06) * det;
+ out[9] = (a01 * b08 - a00 * b10 - a03 * b06) * det;
+ out[10] = (a30 * b04 - a31 * b02 + a33 * b00) * det;
+ out[11] = (a21 * b02 - a20 * b04 - a23 * b00) * det;
+ out[12] = (a11 * b07 - a10 * b09 - a12 * b06) * det;
+ out[13] = (a00 * b09 - a01 * b07 + a02 * b06) * det;
+ out[14] = (a31 * b01 - a30 * b03 - a32 * b00) * det;
+ out[15] = (a20 * b03 - a21 * b01 + a22 * b00) * det;
+
+ return out;
+};
+
+/**
+ * Calculates the adjugate of a mat4
+ *
+ * @param {mat4} out the receiving matrix
+ * @param {mat4} a the source matrix
+ * @returns {mat4} out
+ */
+mat4.adjoint = function(out, a) {
+ var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
+ a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
+ a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
+ a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15];
+
+ out[0] = (a11 * (a22 * a33 - a23 * a32) - a21 * (a12 * a33 - a13 * a32) + a31 * (a12 * a23 - a13 * a22));
+ out[1] = -(a01 * (a22 * a33 - a23 * a32) - a21 * (a02 * a33 - a03 * a32) + a31 * (a02 * a23 - a03 * a22));
+ out[2] = (a01 * (a12 * a33 - a13 * a32) - a11 * (a02 * a33 - a03 * a32) + a31 * (a02 * a13 - a03 * a12));
+ out[3] = -(a01 * (a12 * a23 - a13 * a22) - a11 * (a02 * a23 - a03 * a22) + a21 * (a02 * a13 - a03 * a12));
+ out[4] = -(a10 * (a22 * a33 - a23 * a32) - a20 * (a12 * a33 - a13 * a32) + a30 * (a12 * a23 - a13 * a22));
+ out[5] = (a00 * (a22 * a33 - a23 * a32) - a20 * (a02 * a33 - a03 * a32) + a30 * (a02 * a23 - a03 * a22));
+ out[6] = -(a00 * (a12 * a33 - a13 * a32) - a10 * (a02 * a33 - a03 * a32) + a30 * (a02 * a13 - a03 * a12));
+ out[7] = (a00 * (a12 * a23 - a13 * a22) - a10 * (a02 * a23 - a03 * a22) + a20 * (a02 * a13 - a03 * a12));
+ out[8] = (a10 * (a21 * a33 - a23 * a31) - a20 * (a11 * a33 - a13 * a31) + a30 * (a11 * a23 - a13 * a21));
+ out[9] = -(a00 * (a21 * a33 - a23 * a31) - a20 * (a01 * a33 - a03 * a31) + a30 * (a01 * a23 - a03 * a21));
+ out[10] = (a00 * (a11 * a33 - a13 * a31) - a10 * (a01 * a33 - a03 * a31) + a30 * (a01 * a13 - a03 * a11));
+ out[11] = -(a00 * (a11 * a23 - a13 * a21) - a10 * (a01 * a23 - a03 * a21) + a20 * (a01 * a13 - a03 * a11));
+ out[12] = -(a10 * (a21 * a32 - a22 * a31) - a20 * (a11 * a32 - a12 * a31) + a30 * (a11 * a22 - a12 * a21));
+ out[13] = (a00 * (a21 * a32 - a22 * a31) - a20 * (a01 * a32 - a02 * a31) + a30 * (a01 * a22 - a02 * a21));
+ out[14] = -(a00 * (a11 * a32 - a12 * a31) - a10 * (a01 * a32 - a02 * a31) + a30 * (a01 * a12 - a02 * a11));
+ out[15] = (a00 * (a11 * a22 - a12 * a21) - a10 * (a01 * a22 - a02 * a21) + a20 * (a01 * a12 - a02 * a11));
+ return out;
+};
+
+/**
+ * Calculates the determinant of a mat4
+ *
+ * @param {mat4} a the source matrix
+ * @returns {Number} determinant of a
+ */
+mat4.determinant = function (a) {
+ var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
+ a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
+ a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
+ a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15],
+
+ b00 = a00 * a11 - a01 * a10,
+ b01 = a00 * a12 - a02 * a10,
+ b02 = a00 * a13 - a03 * a10,
+ b03 = a01 * a12 - a02 * a11,
+ b04 = a01 * a13 - a03 * a11,
+ b05 = a02 * a13 - a03 * a12,
+ b06 = a20 * a31 - a21 * a30,
+ b07 = a20 * a32 - a22 * a30,
+ b08 = a20 * a33 - a23 * a30,
+ b09 = a21 * a32 - a22 * a31,
+ b10 = a21 * a33 - a23 * a31,
+ b11 = a22 * a33 - a23 * a32;
+
+ // Calculate the determinant
+ return b00 * b11 - b01 * b10 + b02 * b09 + b03 * b08 - b04 * b07 + b05 * b06;
+};
+
+/**
+ * Multiplies two mat4's
+ *
+ * @param {mat4} out the receiving matrix
+ * @param {mat4} a the first operand
+ * @param {mat4} b the second operand
+ * @returns {mat4} out
+ */
+mat4.multiply = function (out, a, b) {
+ var a00 = a[0], a01 = a[1], a02 = a[2], a03 = a[3],
+ a10 = a[4], a11 = a[5], a12 = a[6], a13 = a[7],
+ a20 = a[8], a21 = a[9], a22 = a[10], a23 = a[11],
+ a30 = a[12], a31 = a[13], a32 = a[14], a33 = a[15];
+
+ // Cache only the current line of the second matrix
+ var b0 = b[0], b1 = b[1], b2 = b[2], b3 = b[3];
+ out[0] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
+ out[1] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
+ out[2] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
+ out[3] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
+
+ b0 = b[4]; b1 = b[5]; b2 = b[6]; b3 = b[7];
+ out[4] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
+ out[5] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
+ out[6] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
+ out[7] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
+
+ b0 = b[8]; b1 = b[9]; b2 = b[10]; b3 = b[11];
+ out[8] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
+ out[9] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
+ out[10] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
+ out[11] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
+
+ b0 = b[12]; b1 = b[13]; b2 = b[14]; b3 = b[15];
+ out[12] = b0*a00 + b1*a10 + b2*a20 + b3*a30;
+ out[13] = b0*a01 + b1*a11 + b2*a21 + b3*a31;
+ out[14] = b0*a02 + b1*a12 + b2*a22 + b3*a32;
+ out[15] = b0*a03 + b1*a13 + b2*a23 + b3*a33;
+ return out;
+};
+
+/**
+ * Alias for {@link mat4.multiply}
+ * @function
+ */
+mat4.mul = mat4.multiply;
+
+/**
+ * Translate a mat4 by the given vector
+ *
+ * @param {mat4} out the receiving matrix
+ * @param {mat4} a the matrix to translate
+ * @param {vec3} v vector to translate by
+ * @returns {mat4} out
+ */
+mat4.translate = function (out, a, v) {
+ var x = v[0], y = v[1], z = v[2],
+ a00, a01, a02, a03,
+ a10, a11, a12, a13,
+ a20, a21, a22, a23;
+
+ if (a === out) {
+ out[12] = a[0] * x + a[4] * y + a[8] * z + a[12];
+ out[13] = a[1] * x + a[5] * y + a[9] * z + a[13];
+ out[14] = a[2] * x + a[6] * y + a[10] * z + a[14];
+ out[15] = a[3] * x + a[7] * y + a[11] * z + a[15];
+ } else {
+ a00 = a[0]; a01 = a[1]; a02 = a[2]; a03 = a[3];
+ a10 = a[4]; a11 = a[5]; a12 = a[6]; a13 = a[7];
+ a20 = a[8]; a21 = a[9]; a22 = a[10]; a23 = a[11];
+
+ out[0] = a00; out[1] = a01; out[2] = a02; out[3] = a03;
+ out[4] = a10; out[5] = a11; out[6] = a12; out[7] = a13;
+ out[8] = a20; out[9] = a21; out[10] = a22; out[11] = a23;
+
+ out[12] = a00 * x + a10 * y + a20 * z + a[12];
+ out[13] = a01 * x + a11 * y + a21 * z + a[13];
+ out[14] = a02 * x + a12 * y + a22 * z + a[14];
+ out[15] = a03 * x + a13 * y + a23 * z + a[15];
+ }
+
+ return out;
+};
+
+/**
+ * Scales the mat4 by the dimensions in the given vec3
+ *
+ * @param {mat4} out the receiving matrix
+ * @param {mat4} a the matrix to scale
+ * @param {vec3} v the vec3 to scale the matrix by
+ * @returns {mat4} out
+ **/
+mat4.scale = function(out, a, v) {
+ var x = v[0], y = v[1], z = v[2];
+
+ out[0] = a[0] * x;
+ out[1] = a[1] * x;
+ out[2] = a[2] * x;
+ out[3] = a[3] * x;
+ out[4] = a[4] * y;
+ out[5] = a[5] * y;
+ out[6] = a[6] * y;
+ out[7] = a[7] * y;
+ out[8] = a[8] * z;
+ out[9] = a[9] * z;
+ out[10] = a[10] * z;
+ out[11] = a[11] * z;
+ out[12] = a[12];
+ out[13] = a[13];
+ out[14] = a[14];
+ out[15] = a[15];
+ return out;
+};
+
+/**
+ * Rotates a mat4 by the given angle
+ *
+ * @param {mat4} out the receiving matrix
+ * @param {mat4} a the matrix to rotate
+ * @param {Number} rad the angle to rotate the matrix by
+ * @param {vec3} axis the axis to rotate around
+ * @returns {mat4} out
+ */
+mat4.rotate = function (out, a, rad, axis) {
+ var x = axis[0], y = axis[1], z = axis[2],
+ len = Math.sqrt(x * x + y * y + z * z),
+ s, c, t,
+ a00, a01, a02, a03,
+ a10, a11, a12, a13,
+ a20, a21, a22, a23,
+ b00, b01, b02,
+ b10, b11, b12,
+ b20, b21, b22;
+
+ if (Math.abs(len) < GLMAT_EPSILON) { return null; }
+
+ len = 1 / len;
+ x *= len;
+ y *= len;
+ z *= len;
+
+ s = Math.sin(rad);
+ c = Math.cos(rad);
+ t = 1 - c;
+
+ a00 = a[0]; a01 = a[1]; a02 = a[2]; a03 = a[3];
+ a10 = a[4]; a11 = a[5]; a12 = a[6]; a13 = a[7];
+ a20 = a[8]; a21 = a[9]; a22 = a[10]; a23 = a[11];
+
+ // Construct the elements of the rotation matrix
+ b00 = x * x * t + c; b01 = y * x * t + z * s; b02 = z * x * t - y * s;
+ b10 = x * y * t - z * s; b11 = y * y * t + c; b12 = z * y * t + x * s;
+ b20 = x * z * t + y * s; b21 = y * z * t - x * s; b22 = z * z * t + c;
+
+ // Perform rotation-specific matrix multiplication
+ out[0] = a00 * b00 + a10 * b01 + a20 * b02;
+ out[1] = a01 * b00 + a11 * b01 + a21 * b02;
+ out[2] = a02 * b00 + a12 * b01 + a22 * b02;
+ out[3] = a03 * b00 + a13 * b01 + a23 * b02;
+ out[4] = a00 * b10 + a10 * b11 + a20 * b12;
+ out[5] = a01 * b10 + a11 * b11 + a21 * b12;
+ out[6] = a02 * b10 + a12 * b11 + a22 * b12;
+ out[7] = a03 * b10 + a13 * b11 + a23 * b12;
+ out[8] = a00 * b20 + a10 * b21 + a20 * b22;
+ out[9] = a01 * b20 + a11 * b21 + a21 * b22;
+ out[10] = a02 * b20 + a12 * b21 + a22 * b22;
+ out[11] = a03 * b20 + a13 * b21 + a23 * b22;
+
+ if (a !== out) { // If the source and destination differ, copy the unchanged last row
+ out[12] = a[12];
+ out[13] = a[13];
+ out[14] = a[14];
+ out[15] = a[15];
+ }
+ return out;
+};
+
+/**
+ * Rotates a matrix by the given angle around the X axis
+ *
+ * @param {mat4} out the receiving matrix
+ * @param {mat4} a the matrix to rotate
+ * @param {Number} rad the angle to rotate the matrix by
+ * @returns {mat4} out
+ */
+mat4.rotateX = function (out, a, rad) {
+ var s = Math.sin(rad),
+ c = Math.cos(rad),
+ a10 = a[4],
+ a11 = a[5],
+ a12 = a[6],
+ a13 = a[7],
+ a20 = a[8],
+ a21 = a[9],
+ a22 = a[10],
+ a23 = a[11];
+
+ if (a !== out) { // If the source and destination differ, copy the unchanged rows
+ out[0] = a[0];
+ out[1] = a[1];
+ out[2] = a[2];
+ out[3] = a[3];
+ out[12] = a[12];
+ out[13] = a[13];
+ out[14] = a[14];
+ out[15] = a[15];
+ }
+
+ // Perform axis-specific matrix multiplication
+ out[4] = a10 * c + a20 * s;
+ out[5] = a11 * c + a21 * s;
+ out[6] = a12 * c + a22 * s;
+ out[7] = a13 * c + a23 * s;
+ out[8] = a20 * c - a10 * s;
+ out[9] = a21 * c - a11 * s;
+ out[10] = a22 * c - a12 * s;
+ out[11] = a23 * c - a13 * s;
+ return out;
+};
+
+/**
+ * Rotates a matrix by the given angle around the Y axis
+ *
+ * @param {mat4} out the receiving matrix
+ * @param {mat4} a the matrix to rotate
+ * @param {Number} rad the angle to rotate the matrix by
+ * @returns {mat4} out
+ */
+mat4.rotateY = function (out, a, rad) {
+ var s = Math.sin(rad),
+ c = Math.cos(rad),
+ a00 = a[0],
+ a01 = a[1],
+ a02 = a[2],
+ a03 = a[3],
+ a20 = a[8],
+ a21 = a[9],
+ a22 = a[10],
+ a23 = a[11];
+
+ if (a !== out) { // If the source and destination differ, copy the unchanged rows
+ out[4] = a[4];
+ out[5] = a[5];
+ out[6] = a[6];
+ out[7] = a[7];
+ out[12] = a[12];
+ out[13] = a[13];
+ out[14] = a[14];
+ out[15] = a[15];
+ }
+
+ // Perform axis-specific matrix multiplication
+ out[0] = a00 * c - a20 * s;
+ out[1] = a01 * c - a21 * s;
+ out[2] = a02 * c - a22 * s;
+ out[3] = a03 * c - a23 * s;
+ out[8] = a00 * s + a20 * c;
+ out[9] = a01 * s + a21 * c;
+ out[10] = a02 * s + a22 * c;
+ out[11] = a03 * s + a23 * c;
+ return out;
+};
+
+/**
+ * Rotates a matrix by the given angle around the Z axis
+ *
+ * @param {mat4} out the receiving matrix
+ * @param {mat4} a the matrix to rotate
+ * @param {Number} rad the angle to rotate the matrix by
+ * @returns {mat4} out
+ */
+mat4.rotateZ = function (out, a, rad) {
+ var s = Math.sin(rad),
+ c = Math.cos(rad),
+ a00 = a[0],
+ a01 = a[1],
+ a02 = a[2],
+ a03 = a[3],
+ a10 = a[4],
+ a11 = a[5],
+ a12 = a[6],
+ a13 = a[7];
+
+ if (a !== out) { // If the source and destination differ, copy the unchanged last row
+ 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];
+ }
+
+ // Perform axis-specific matrix multiplication
+ out[0] = a00 * c + a10 * s;
+ out[1] = a01 * c + a11 * s;
+ out[2] = a02 * c + a12 * s;
+ out[3] = a03 * c + a13 * s;
+ out[4] = a10 * c - a00 * s;
+ out[5] = a11 * c - a01 * s;
+ out[6] = a12 * c - a02 * s;
+ out[7] = a13 * c - a03 * s;
+ return out;
+};
+
+/**
+ * Creates a matrix from a quaternion rotation and vector translation
+ * This is equivalent to (but much faster than):
+ *
+ * mat4.identity(dest);
+ * mat4.translate(dest, vec);
+ * var quatMat = mat4.create();
+ * quat4.toMat4(quat, quatMat);
+ * mat4.multiply(dest, quatMat);
+ *
+ * @param {mat4} out mat4 receiving operation result
+ * @param {quat4} q Rotation quaternion
+ * @param {vec3} v Translation vector
+ * @returns {mat4} out
+ */
+mat4.fromRotationTranslation = function (out, q, v) {
+ // Quaternion math
+ var x = q[0], y = q[1], z = q[2], w = q[3],
+ x2 = x + x,
+ y2 = y + y,
+ z2 = z + z,
+
+ xx = x * x2,
+ xy = x * y2,
+ xz = x * z2,
+ yy = y * y2,
+ yz = y * z2,
+ zz = z * z2,
+ wx = w * x2,
+ wy = w * y2,
+ wz = w * z2;
+
+ out[0] = 1 - (yy + zz);
+ out[1] = xy + wz;
+ out[2] = xz - wy;
+ out[3] = 0;
+ out[4] = xy - wz;
+ out[5] = 1 - (xx + zz);
+ out[6] = yz + wx;
+ out[7] = 0;
+ out[8] = xz + wy;
+ out[9] = yz - wx;
+ out[10] = 1 - (xx + yy);
+ out[11] = 0;
+ out[12] = v[0];
+ out[13] = v[1];
+ out[14] = v[2];
+ out[15] = 1;
+
+ return out;
+};
+
+mat4.fromQuat = function (out, q) {
+ var x = q[0], y = q[1], z = q[2], w = q[3],
+ x2 = x + x,
+ y2 = y + y,
+ z2 = z + z,
+
+ xx = x * x2,
+ yx = y * x2,
+ yy = y * y2,
+ zx = z * x2,
+ zy = z * y2,
+ zz = z * z2,
+ wx = w * x2,
+ wy = w * y2,
+ wz = w * z2;
+
+ out[0] = 1 - yy - zz;
+ out[1] = yx + wz;
+ out[2] = zx - wy;
+ out[3] = 0;
+
+ out[4] = yx - wz;
+ out[5] = 1 - xx - zz;
+ out[6] = zy + wx;
+ out[7] = 0;
+
+ out[8] = zx + wy;
+ out[9] = zy - wx;
+ out[10] = 1 - xx - yy;
+ out[11] = 0;
+
+ out[12] = 0;
+ out[13] = 0;
+ out[14] = 0;
+ out[15] = 1;
+
+ return out;
+};
+
+/**
+ * Generates a frustum matrix with the given bounds
+ *
+ * @param {mat4} out mat4 frustum matrix will be written into
+ * @param {Number} left Left bound of the frustum
+ * @param {Number} right Right bound of the frustum
+ * @param {Number} bottom Bottom bound of the frustum
+ * @param {Number} top Top bound of the frustum
+ * @param {Number} near Near bound of the frustum
+ * @param {Number} far Far bound of the frustum
+ * @returns {mat4} out
+ */
+mat4.frustum = function (out, left, right, bottom, top, near, far) {
+ var rl = 1 / (right - left),
+ tb = 1 / (top - bottom),
+ nf = 1 / (near - far);
+ out[0] = (near * 2) * rl;
+ out[1] = 0;
+ out[2] = 0;
+ out[3] = 0;
+ out[4] = 0;
+ out[5] = (near * 2) * tb;
+ out[6] = 0;
+ out[7] = 0;
+ out[8] = (right + left) * rl;
+ out[9] = (top + bottom) * tb;
+ out[10] = (far + near) * nf;
+ out[11] = -1;
+ out[12] = 0;
+ out[13] = 0;
+ out[14] = (far * near * 2) * nf;
+ out[15] = 0;
+ return out;
+};
+
+/**
+ * Generates a perspective projection matrix with the given bounds
+ *
+ * @param {mat4} out mat4 frustum matrix will be written into
+ * @param {number} fovy Vertical field of view in radians
+ * @param {number} aspect Aspect ratio. typically viewport width/height
+ * @param {number} near Near bound of the frustum
+ * @param {number} far Far bound of the frustum
+ * @returns {mat4} out
+ */
+mat4.perspective = function (out, fovy, aspect, near, far) {
+ var f = 1.0 / Math.tan(fovy / 2),
+ nf = 1 / (near - far);
+ out[0] = f / aspect;
+ out[1] = 0;
+ out[2] = 0;
+ out[3] = 0;
+ out[4] = 0;
+ out[5] = f;
+ out[6] = 0;
+ out[7] = 0;
+ out[8] = 0;
+ out[9] = 0;
+ out[10] = (far + near) * nf;
+ out[11] = -1;
+ out[12] = 0;
+ out[13] = 0;
+ out[14] = (2 * far * near) * nf;
+ out[15] = 0;
+ return out;
+};
+
+/**
+ * Generates a orthogonal projection matrix with the given bounds
+ *
+ * @param {mat4} out mat4 frustum matrix will be written into
+ * @param {number} left Left bound of the frustum
+ * @param {number} right Right bound of the frustum
+ * @param {number} bottom Bottom bound of the frustum
+ * @param {number} top Top bound of the frustum
+ * @param {number} near Near bound of the frustum
+ * @param {number} far Far bound of the frustum
+ * @returns {mat4} out
+ */
+mat4.ortho = function (out, left, right, bottom, top, near, far) {
+ var lr = 1 / (left - right),
+ bt = 1 / (bottom - top),
+ nf = 1 / (near - far);
+ out[0] = -2 * lr;
+ out[1] = 0;
+ out[2] = 0;
+ out[3] = 0;
+ out[4] = 0;
+ out[5] = -2 * bt;
+ out[6] = 0;
+ out[7] = 0;
+ out[8] = 0;
+ out[9] = 0;
+ out[10] = 2 * nf;
+ out[11] = 0;
+ out[12] = (left + right) * lr;
+ out[13] = (top + bottom) * bt;
+ out[14] = (far + near) * nf;
+ out[15] = 1;
+ return out;
+};
+
+/**
+ * Generates a look-at matrix with the given eye position, focal point, and up axis
+ *
+ * @param {mat4} out mat4 frustum matrix will be written into
+ * @param {vec3} eye Position of the viewer
+ * @param {vec3} center Point the viewer is looking at
+ * @param {vec3} up vec3 pointing up
+ * @returns {mat4} out
+ */
+mat4.lookAt = function (out, eye, center, up) {
+ var x0, x1, x2, y0, y1, y2, z0, z1, z2, len,
+ eyex = eye[0],
+ eyey = eye[1],
+ eyez = eye[2],
+ upx = up[0],
+ upy = up[1],
+ upz = up[2],
+ centerx = center[0],
+ centery = center[1],
+ centerz = center[2];
+
+ if (Math.abs(eyex - centerx) < GLMAT_EPSILON &&
+ Math.abs(eyey - centery) < GLMAT_EPSILON &&
+ Math.abs(eyez - centerz) < GLMAT_EPSILON) {
+ return mat4.identity(out);
+ }
+
+ z0 = eyex - centerx;
+ z1 = eyey - centery;
+ z2 = eyez - centerz;
+
+ len = 1 / Math.sqrt(z0 * z0 + z1 * z1 + z2 * z2);
+ z0 *= len;
+ z1 *= len;
+ z2 *= len;
+
+ x0 = upy * z2 - upz * z1;
+ x1 = upz * z0 - upx * z2;
+ x2 = upx * z1 - upy * z0;
+ len = Math.sqrt(x0 * x0 + x1 * x1 + x2 * x2);
+ if (!len) {
+ x0 = 0;
+ x1 = 0;
+ x2 = 0;
+ } else {
+ len = 1 / len;
+ x0 *= len;
+ x1 *= len;
+ x2 *= len;
+ }
+
+ y0 = z1 * x2 - z2 * x1;
+ y1 = z2 * x0 - z0 * x2;
+ y2 = z0 * x1 - z1 * x0;
+
+ len = Math.sqrt(y0 * y0 + y1 * y1 + y2 * y2);
+ if (!len) {
+ y0 = 0;
+ y1 = 0;
+ y2 = 0;
+ } else {
+ len = 1 / len;
+ y0 *= len;
+ y1 *= len;
+ y2 *= len;
+ }
+
+ out[0] = x0;
+ out[1] = y0;
+ out[2] = z0;
+ out[3] = 0;
+ out[4] = x1;
+ out[5] = y1;
+ out[6] = z1;
+ out[7] = 0;
+ out[8] = x2;
+ out[9] = y2;
+ out[10] = z2;
+ out[11] = 0;
+ out[12] = -(x0 * eyex + x1 * eyey + x2 * eyez);
+ out[13] = -(y0 * eyex + y1 * eyey + y2 * eyez);
+ out[14] = -(z0 * eyex + z1 * eyey + z2 * eyez);
+ out[15] = 1;
+
+ return out;
+};
+
+/**
+ * Returns a string representation of a mat4
+ *
+ * @param {mat4} mat matrix to represent as a string
+ * @returns {String} string representation of the matrix
+ */
+mat4.str = function (a) {
+ return 'mat4(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + a[3] + ', ' +
+ a[4] + ', ' + a[5] + ', ' + a[6] + ', ' + a[7] + ', ' +
+ a[8] + ', ' + a[9] + ', ' + a[10] + ', ' + a[11] + ', ' +
+ a[12] + ', ' + a[13] + ', ' + a[14] + ', ' + a[15] + ')';
+};
+
+/**
+ * Returns Frobenius norm of a mat4
+ *
+ * @param {mat4} a the matrix to calculate Frobenius norm of
+ * @returns {Number} Frobenius norm
+ */
+mat4.frob = function (a) {
+ return(Math.sqrt(Math.pow(a[0], 2) + Math.pow(a[1], 2) + Math.pow(a[2], 2) + Math.pow(a[3], 2) + Math.pow(a[4], 2) + Math.pow(a[5], 2) + Math.pow(a[6], 2) + Math.pow(a[6], 2) + Math.pow(a[7], 2) + Math.pow(a[8], 2) + Math.pow(a[9], 2) + Math.pow(a[10], 2) + Math.pow(a[11], 2) + Math.pow(a[12], 2) + Math.pow(a[13], 2) + Math.pow(a[14], 2) + Math.pow(a[15], 2) ))
+};
+
+
+if(typeof(exports) !== 'undefined') {
+ exports.mat4 = mat4;
+}
+;
+/* Copyright (c) 2013, 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 Quaternion
+ * @name quat
+ */
+
+var quat = {};
+
+/**
+ * Creates a new identity quat
+ *
+ * @returns {quat} a new quaternion
+ */
+quat.create = function() {
+ var out = new GLMAT_ARRAY_TYPE(4);
+ out[0] = 0;
+ out[1] = 0;
+ out[2] = 0;
+ out[3] = 1;
+ return out;
+};
+
+/**
+ * Sets a quaternion to represent the shortest rotation from one
+ * vector to another.
+ *
+ * Both vectors are assumed to be unit length.
+ *
+ * @param {quat} out the receiving quaternion.
+ * @param {vec3} a the initial vector
+ * @param {vec3} b the destination vector
+ * @returns {quat} out
+ */
+quat.rotationTo = (function() {
+ var tmpvec3 = vec3.create();
+ var xUnitVec3 = vec3.fromValues(1,0,0);
+ var yUnitVec3 = vec3.fromValues(0,1,0);
+
+ return function(out, a, b) {
+ var dot = vec3.dot(a, b);
+ if (dot < -0.999999) {
+ vec3.cross(tmpvec3, xUnitVec3, a);
+ if (vec3.length(tmpvec3) < 0.000001)
+ vec3.cross(tmpvec3, yUnitVec3, a);
+ vec3.normalize(tmpvec3, tmpvec3);
+ quat.setAxisAngle(out, tmpvec3, Math.PI);
+ return out;
+ } else if (dot > 0.999999) {
+ out[0] = 0;
+ out[1] = 0;
+ out[2] = 0;
+ out[3] = 1;
+ return out;
+ } else {
+ vec3.cross(tmpvec3, a, b);
+ out[0] = tmpvec3[0];
+ out[1] = tmpvec3[1];
+ out[2] = tmpvec3[2];
+ out[3] = 1 + dot;
+ return quat.normalize(out, out);
+ }
+ };
+})();
+
+/**
+ * Sets the specified quaternion with values corresponding to the given
+ * axes. Each axis is a vec3 and is expected to be unit length and
+ * perpendicular to all other specified axes.
+ *
+ * @param {vec3} view the vector representing the viewing direction
+ * @param {vec3} right the vector representing the local "right" direction
+ * @param {vec3} up the vector representing the local "up" direction
+ * @returns {quat} out
+ */
+quat.setAxes = (function() {
+ var matr = mat3.create();
+
+ return function(out, view, right, up) {
+ matr[0] = right[0];
+ matr[3] = right[1];
+ matr[6] = right[2];
+
+ matr[1] = up[0];
+ matr[4] = up[1];
+ matr[7] = up[2];
+
+ matr[2] = -view[0];
+ matr[5] = -view[1];
+ matr[8] = -view[2];
+
+ return quat.normalize(out, quat.fromMat3(out, matr));
+ };
+})();
+
+/**
+ * Creates a new quat initialized with values from an existing quaternion
+ *
+ * @param {quat} a quaternion to clone
+ * @returns {quat} a new quaternion
+ * @function
+ */
+quat.clone = vec4.clone;
+
+/**
+ * Creates a new quat initialized with the given values
+ *
+ * @param {Number} x X component
+ * @param {Number} y Y component
+ * @param {Number} z Z component
+ * @param {Number} w W component
+ * @returns {quat} a new quaternion
+ * @function
+ */
+quat.fromValues = vec4.fromValues;
+
+/**
+ * Copy the values from one quat to another
+ *
+ * @param {quat} out the receiving quaternion
+ * @param {quat} a the source quaternion
+ * @returns {quat} out
+ * @function
+ */
+quat.copy = vec4.copy;
+
+/**
+ * Set the components of a quat to the given values
+ *
+ * @param {quat} out the receiving quaternion
+ * @param {Number} x X component
+ * @param {Number} y Y component
+ * @param {Number} z Z component
+ * @param {Number} w W component
+ * @returns {quat} out
+ * @function
+ */
+quat.set = vec4.set;
+
+/**
+ * Set a quat to the identity quaternion
+ *
+ * @param {quat} out the receiving quaternion
+ * @returns {quat} out
+ */
+quat.identity = function(out) {
+ out[0] = 0;
+ out[1] = 0;
+ out[2] = 0;
+ out[3] = 1;
+ return out;
+};
+
+/**
+ * Sets a quat from the given angle and rotation axis,
+ * then returns it.
+ *
+ * @param {quat} out the receiving quaternion
+ * @param {vec3} axis the axis around which to rotate
+ * @param {Number} rad the angle in radians
+ * @returns {quat} out
+ **/
+quat.setAxisAngle = function(out, axis, rad) {
+ rad = rad * 0.5;
+ var s = Math.sin(rad);
+ out[0] = s * axis[0];
+ out[1] = s * axis[1];
+ out[2] = s * axis[2];
+ out[3] = Math.cos(rad);
+ return out;
+};
+
+/**
+ * Adds two quat's
+ *
+ * @param {quat} out the receiving quaternion
+ * @param {quat} a the first operand
+ * @param {quat} b the second operand
+ * @returns {quat} out
+ * @function
+ */
+quat.add = vec4.add;
+
+/**
+ * Multiplies two quat's
+ *
+ * @param {quat} out the receiving quaternion
+ * @param {quat} a the first operand
+ * @param {quat} b the second operand
+ * @returns {quat} out
+ */
+quat.multiply = function(out, a, b) {
+ var ax = a[0], ay = a[1], az = a[2], aw = a[3],
+ bx = b[0], by = b[1], bz = b[2], bw = b[3];
+
+ out[0] = ax * bw + aw * bx + ay * bz - az * by;
+ out[1] = ay * bw + aw * by + az * bx - ax * bz;
+ out[2] = az * bw + aw * bz + ax * by - ay * bx;
+ out[3] = aw * bw - ax * bx - ay * by - az * bz;
+ return out;
+};
+
+/**
+ * Alias for {@link quat.multiply}
+ * @function
+ */
+quat.mul = quat.multiply;
+
+/**
+ * Scales a quat by a scalar number
+ *
+ * @param {quat} out the receiving vector
+ * @param {quat} a the vector to scale
+ * @param {Number} b amount to scale the vector by
+ * @returns {quat} out
+ * @function
+ */
+quat.scale = vec4.scale;
+
+/**
+ * Rotates a quaternion by the given angle about the X axis
+ *
+ * @param {quat} out quat receiving operation result
+ * @param {quat} a quat to rotate
+ * @param {number} rad angle (in radians) to rotate
+ * @returns {quat} out
+ */
+quat.rotateX = function (out, a, rad) {
+ rad *= 0.5;
+
+ var ax = a[0], ay = a[1], az = a[2], aw = a[3],
+ bx = Math.sin(rad), bw = Math.cos(rad);
+
+ out[0] = ax * bw + aw * bx;
+ out[1] = ay * bw + az * bx;
+ out[2] = az * bw - ay * bx;
+ out[3] = aw * bw - ax * bx;
+ return out;
+};
+
+/**
+ * Rotates a quaternion by the given angle about the Y axis
+ *
+ * @param {quat} out quat receiving operation result
+ * @param {quat} a quat to rotate
+ * @param {number} rad angle (in radians) to rotate
+ * @returns {quat} out
+ */
+quat.rotateY = function (out, a, rad) {
+ rad *= 0.5;
+
+ var ax = a[0], ay = a[1], az = a[2], aw = a[3],
+ by = Math.sin(rad), bw = Math.cos(rad);
+
+ out[0] = ax * bw - az * by;
+ out[1] = ay * bw + aw * by;
+ out[2] = az * bw + ax * by;
+ out[3] = aw * bw - ay * by;
+ return out;
+};
+
+/**
+ * Rotates a quaternion by the given angle about the Z axis
+ *
+ * @param {quat} out quat receiving operation result
+ * @param {quat} a quat to rotate
+ * @param {number} rad angle (in radians) to rotate
+ * @returns {quat} out
+ */
+quat.rotateZ = function (out, a, rad) {
+ rad *= 0.5;
+
+ var ax = a[0], ay = a[1], az = a[2], aw = a[3],
+ bz = Math.sin(rad), bw = Math.cos(rad);
+
+ out[0] = ax * bw + ay * bz;
+ out[1] = ay * bw - ax * bz;
+ out[2] = az * bw + aw * bz;
+ out[3] = aw * bw - az * bz;
+ return out;
+};
+
+/**
+ * Calculates the W component of a quat from the X, Y, and Z components.
+ * Assumes that quaternion is 1 unit in length.
+ * Any existing W component will be ignored.
+ *
+ * @param {quat} out the receiving quaternion
+ * @param {quat} a quat to calculate W component of
+ * @returns {quat} out
+ */
+quat.calculateW = function (out, a) {
+ var x = a[0], y = a[1], z = a[2];
+
+ out[0] = x;
+ out[1] = y;
+ out[2] = z;
+ out[3] = -Math.sqrt(Math.abs(1.0 - x * x - y * y - z * z));
+ return out;
+};
+
+/**
+ * Calculates the dot product of two quat's
+ *
+ * @param {quat} a the first operand
+ * @param {quat} b the second operand
+ * @returns {Number} dot product of a and b
+ * @function
+ */
+quat.dot = vec4.dot;
+
+/**
+ * Performs a linear interpolation between two quat's
+ *
+ * @param {quat} out the receiving quaternion
+ * @param {quat} a the first operand
+ * @param {quat} b the second operand
+ * @param {Number} t interpolation amount between the two inputs
+ * @returns {quat} out
+ * @function
+ */
+quat.lerp = vec4.lerp;
+
+/**
+ * Performs a spherical linear interpolation between two quat
+ *
+ * @param {quat} out the receiving quaternion
+ * @param {quat} a the first operand
+ * @param {quat} b the second operand
+ * @param {Number} t interpolation amount between the two inputs
+ * @returns {quat} out
+ */
+quat.slerp = function (out, a, b, t) {
+ // benchmarks:
+ // http://jsperf.com/quaternion-slerp-implementations
+
+ var ax = a[0], ay = a[1], az = a[2], aw = a[3],
+ bx = b[0], by = b[1], bz = b[2], bw = b[3];
+
+ var omega, cosom, sinom, scale0, scale1;
+
+ // calc cosine
+ cosom = ax * bx + ay * by + az * bz + aw * bw;
+ // adjust signs (if necessary)
+ if ( cosom < 0.0 ) {
+ cosom = -cosom;
+ bx = - bx;
+ by = - by;
+ bz = - bz;
+ bw = - bw;
+ }
+ // calculate coefficients
+ if ( (1.0 - cosom) > 0.000001 ) {
+ // standard case (slerp)
+ omega = Math.acos(cosom);
+ sinom = Math.sin(omega);
+ scale0 = Math.sin((1.0 - t) * omega) / sinom;
+ scale1 = Math.sin(t * omega) / sinom;
+ } else {
+ // "from" and "to" quaternions are very close
+ // ... so we can do a linear interpolation
+ scale0 = 1.0 - t;
+ scale1 = t;
+ }
+ // calculate final values
+ out[0] = scale0 * ax + scale1 * bx;
+ out[1] = scale0 * ay + scale1 * by;
+ out[2] = scale0 * az + scale1 * bz;
+ out[3] = scale0 * aw + scale1 * bw;
+
+ return out;
+};
+
+/**
+ * Calculates the inverse of a quat
+ *
+ * @param {quat} out the receiving quaternion
+ * @param {quat} a quat to calculate inverse of
+ * @returns {quat} out
+ */
+quat.invert = function(out, a) {
+ var a0 = a[0], a1 = a[1], a2 = a[2], a3 = a[3],
+ dot = a0*a0 + a1*a1 + a2*a2 + a3*a3,
+ invDot = dot ? 1.0/dot : 0;
+
+ // TODO: Would be faster to return [0,0,0,0] immediately if dot == 0
+
+ out[0] = -a0*invDot;
+ out[1] = -a1*invDot;
+ out[2] = -a2*invDot;
+ out[3] = a3*invDot;
+ return out;
+};
+
+/**
+ * Calculates the conjugate of a quat
+ * If the quaternion is normalized, this function is faster than quat.inverse and produces the same result.
+ *
+ * @param {quat} out the receiving quaternion
+ * @param {quat} a quat to calculate conjugate of
+ * @returns {quat} out
+ */
+quat.conjugate = function (out, a) {
+ out[0] = -a[0];
+ out[1] = -a[1];
+ out[2] = -a[2];
+ out[3] = a[3];
+ return out;
+};
+
+/**
+ * Calculates the length of a quat
+ *
+ * @param {quat} a vector to calculate length of
+ * @returns {Number} length of a
+ * @function
+ */
+quat.length = vec4.length;
+
+/**
+ * Alias for {@link quat.length}
+ * @function
+ */
+quat.len = quat.length;
+
+/**
+ * Calculates the squared length of a quat
+ *
+ * @param {quat} a vector to calculate squared length of
+ * @returns {Number} squared length of a
+ * @function
+ */
+quat.squaredLength = vec4.squaredLength;
+
+/**
+ * Alias for {@link quat.squaredLength}
+ * @function
+ */
+quat.sqrLen = quat.squaredLength;
+
+/**
+ * Normalize a quat
+ *
+ * @param {quat} out the receiving quaternion
+ * @param {quat} a quaternion to normalize
+ * @returns {quat} out
+ * @function
+ */
+quat.normalize = vec4.normalize;
+
+/**
+ * Creates a quaternion from the given 3x3 rotation matrix.
+ *
+ * NOTE: The resultant quaternion is not normalized, so you should be sure
+ * to renormalize the quaternion yourself where necessary.
+ *
+ * @param {quat} out the receiving quaternion
+ * @param {mat3} m rotation matrix
+ * @returns {quat} out
+ * @function
+ */
+quat.fromMat3 = function(out, m) {
+ // Algorithm in Ken Shoemake's article in 1987 SIGGRAPH course notes
+ // article "Quaternion Calculus and Fast Animation".
+ var fTrace = m[0] + m[4] + m[8];
+ var fRoot;
+
+ if ( fTrace > 0.0 ) {
+ // |w| > 1/2, may as well choose w > 1/2
+ fRoot = Math.sqrt(fTrace + 1.0); // 2w
+ out[3] = 0.5 * fRoot;
+ fRoot = 0.5/fRoot; // 1/(4w)
+ out[0] = (m[7]-m[5])*fRoot;
+ out[1] = (m[2]-m[6])*fRoot;
+ out[2] = (m[3]-m[1])*fRoot;
+ } else {
+ // |w| <= 1/2
+ var i = 0;
+ if ( m[4] > m[0] )
+ i = 1;
+ if ( m[8] > m[i*3+i] )
+ i = 2;
+ var j = (i+1)%3;
+ var k = (i+2)%3;
+
+ fRoot = Math.sqrt(m[i*3+i]-m[j*3+j]-m[k*3+k] + 1.0);
+ out[i] = 0.5 * fRoot;
+ fRoot = 0.5 / fRoot;
+ out[3] = (m[k*3+j] - m[j*3+k]) * fRoot;
+ out[j] = (m[j*3+i] + m[i*3+j]) * fRoot;
+ out[k] = (m[k*3+i] + m[i*3+k]) * fRoot;
+ }
+
+ return out;
+};
+
+/**
+ * Returns a string representation of a quatenion
+ *
+ * @param {quat} vec vector to represent as a string
+ * @returns {String} string representation of the vector
+ */
+quat.str = function (a) {
+ return 'quat(' + a[0] + ', ' + a[1] + ', ' + a[2] + ', ' + a[3] + ')';
+};
+
+if(typeof(exports) !== 'undefined') {
+ exports.quat = quat;
+}
+;
+
+
+
+
+
+
+
+
+
+
+
+
+
+ })(shim.exports);
+})(this);
diff --git a/js/animation/instance.js b/js/animation/instance.js
new file mode 100644
index 0000000000..0d1dd310d6
--- /dev/null
+++ b/js/animation/instance.js
@@ -0,0 +1,277 @@
+(function(window) {
+ var time = Date.now || function() {
+ return +new Date();
+ };
+ var desiredFrames = 60;
+ var millisecondsPerSecond = 1000;
+
+ // Namespace
+ ionic.Animation = ionic.Animation || {};
+/**
+ * Animation instance
+ */
+ ionic.Animation.Animation = function(opts) {
+ ionic.extend(this, opts);
+
+ if(opts.useSlowAnimations) {
+ console.warn('Running animation', opts.name, 'with SLOW animations (duration and delay increased by 3x)');
+ this.delay *= 3;
+ this.duration *= 3;
+ }
+ };
+
+ ionic.Animation.Animation.prototype = {
+ clone: function() {
+ return new ionic.Animation.Animation({
+ curve: this.curve,
+ curveFn: this.curveFn,
+ duration: this.duration,
+ delay: this.delay,
+ repeat: this.repeat,
+ reverse: this.reverse,
+ autoReverse: this.autoReverse,
+ onComplete: this.onComplete,
+ step: this.step
+ });
+ },
+ curve: 'linear',
+ curveFn: ionic.Animation.TimingFn['linear'],
+ duration: 500,
+ delay: 0,
+ repeat: -1,
+ reverse: false,
+ autoReverse: false,
+
+ onComplete: function(didComplete, droppedFrames) {},
+
+ // Overridable
+ step: function(percent) {},
+
+ setPercent: function(percent, doesSetState) {
+ this.pause();
+
+ var v = this.curveFn(percent);
+
+ // Check if we should change any internal saved state (to resume
+ // from this value later on, for example. Defaults to true)
+ if(doesSetState !== false && this._pauseState) {
+ // Not sure yet on this
+ }
+
+ this.step(v);
+ //var value = easingMethod ? easingMethod(percent) : percent;
+ },
+ stop: function() {
+ this.isRunning = false;
+ this.shouldEnd = true;
+ },
+ play: function() {
+ this.isPaused = false;
+ if(this._lastStepFn) {
+ this._unpausedAnimation = true;
+ ionic.cancelAnimationFrame(this._lastStepFn);
+ ionic.requestAnimationFrame(this._lastStepFn);
+ }
+ },
+ pause: function() {
+ this.isPaused = true;
+ },
+ _saveState: function(now, closure) {
+ this._pauseState = {
+ pausedAt: now,
+ }
+ this._lastStepFn = closure;
+ window.cancelAnimationFrame(closure);
+ },
+ restart: function() {
+ var self = this;
+
+ this.isRunning = false;
+
+ // TODO: Verify this isn't totally stupid
+ ionic.requestAnimationFrame(function() {
+ self.start();
+ })
+ },
+
+ start: function() {
+ var self = this;
+
+ // Set up the initial animation state
+ var animState = {
+ startPercent: this.reverse === true ? 1 : 0,
+ endPercent: this.reverse === true ? 0 : 1,
+ duration: this.duration,
+ easingMethod: this.curveFn,
+ delay: this.delay,
+ reverse: this.reverse,
+ repeat: this.repeat,
+ autoReverse: this.autoReverse,
+ dynamic: this.dynamic
+ }
+
+ ionic.Animation.animationStarted(this);
+
+ return this._run(function(percent, now, render) {
+ if(render) {
+ self.step(percent);
+ }
+ }, function(droppedFrames, finishedAnimation) {
+ ionic.Animation.animationStopped(self);
+ self.onComplete && self.onComplete(finishedAnimation, droppedFrames);
+ console.log('Finished anim:', droppedFrames, finishedAnimation);
+ }, animState);
+ },
+
+ /**
+ * Start the animation.
+ *
+ * @param stepCallback {Function} Pointer to function which is executed on every step.
+ * Signature of the method should be `function(percent, now, virtual) { return continueWithAnimation; }`
+ * @param completedCallback {Function}
+ * Signature of the method should be `function(droppedFrames, finishedAnimation) {}`
+ * @param duration {Integer} Milliseconds to run the animation
+ * @param easingMethod {Function} Pointer to easing function
+ * Signature of the method should be `function(percent) { return modifiedValue; }`
+ * @return {Integer} Identifier of animation. Can be used to stop it any time.
+ */
+ _run: function(stepCallback, completedCallback, state) {
+ var self = this;
+ var start = time();
+ var lastFrame = start;
+ var startTime = start + state.delay;
+ var percent = state.startPercent;
+ var startPercent = state.startPercent;
+ var endPercent = state.endPercent;
+ var autoReverse = state.autoReverse;
+ var delay = state.delay;
+ var duration = state.duration;
+ var easingMethod = state.easingMethod;
+ var repeat = state.repeat;
+ var reverse = state.reverse;
+
+ var dropCounter = 0;
+ var iteration = 0;
+
+ var perhapsAutoreverse = function() {
+ // Check if we hit the end and should auto reverse
+ if(percent === endPercent && autoReverse) {
+ // Flip the start and end values
+ var sp = endPercent;
+ reverse = !reverse;
+ endPercent = startPercent;
+ startPercent = sp;
+
+ if(repeat === 0) {
+ autoReverse = false;
+ }
+ } else {
+ // Otherwise, just start over
+ percent = startPercent;
+ }
+ // Start fresh either way
+ start = time();
+ ionic.requestAnimationFrame(step);
+ }
+
+
+ // This is the internal step method which is called every few milliseconds
+ var step = function(virtual) {
+ var now = time();
+
+ if(self._unpausedAnimation) {
+ // We unpaused. Increase the start time to account
+ // for the gap in playback (to keep timing the same)
+ var t = self._pauseState.pausedAt;
+ start = start + (now - t);
+ lastFrame = now;
+ }
+
+ // Normalize virtual value
+ var render = virtual !== true;
+
+ // Get current time
+ var diff = now - start;
+
+ // Verification is executed before next animation step
+ if(self.isPaused) {
+ self._saveState(now, step);//percent, iteration, reverse);
+ return;
+ }
+
+ if (!self.isRunning) {// || (verifyCallback && !verifyCallback(id))) {
+
+ completedCallback && completedCallback(desiredFrames - (dropCounter / ((now - start) / millisecondsPerSecond)), self._animationId, false);
+ return;
+
+ }
+
+
+ // For the current rendering to apply let's update omitted steps in memory.
+ // This is important to bring internal state variables up-to-date with progress in time.
+ if (render) {
+
+ var droppedFrames = Math.round((now - lastFrame) / (millisecondsPerSecond / desiredFrames)) - 1;
+ if(self._unpausedAnimation) {
+ console.log('After pausing', droppedFrames, 'Dropped frames');
+ }
+ for (var j = 0; j < Math.min(droppedFrames, 4); j++) {
+ console.log('drop step');
+ step(true);
+ dropCounter++;
+ }
+
+ }
+
+ // Compute percent value
+ if (diff > delay && duration) {
+ percent = (diff - delay) / duration;
+
+ // If we are animating in the opposite direction,
+ // the percentage is 1 minus this perc val
+ if(reverse === true) {
+ percent = 1 - percent;
+ if (percent < 0) {
+ percent = 0;
+ }
+ } else {
+ if (percent > 1) {
+ percent = 1;
+ }
+ }
+ }
+
+ self._unpausedAnimation = false;
+
+ // Execute step callback, then...
+ var value;
+ if(state.dynamic) {
+ value = state.dynamic.at(percent);
+ } else {
+ value = easingMethod ? easingMethod(percent) : percent;
+ }
+ if ((stepCallback(value, now, render) === false || percent === endPercent) && render) {
+ if(repeat === -1) {
+ perhapsAutoreverse();
+ } else if(iteration < repeat) {
+ // Track iterations
+ iteration++;
+ perhapsAutoreverse();
+ } else if(repeat === 0 && autoReverse) {
+ perhapsAutoreverse();
+ } else {
+ completedCallback && completedCallback(desiredFrames - (dropCounter / ((now - start) / millisecondsPerSecond)), self._animationId, percent === endPercent || duration == null);
+ }
+ } else if (render) {
+ lastFrame = now;
+ ionic.requestAnimationFrame(step);
+ }
+ };
+
+
+ // Init first step
+ ionic.requestAnimationFrame(step);
+
+ }
+ };
+})(window);
diff --git a/js/animation/timing-functions.js b/js/animation/timing-functions.js
new file mode 100644
index 0000000000..3afabb4b83
--- /dev/null
+++ b/js/animation/timing-functions.js
@@ -0,0 +1,50 @@
+(function(window) {
+
+ // Namespace
+ ionic.Animation = ionic.Animation || {};
+
+
+ ionic.Animation.TimingFn = {
+ 'spring': function(duration) {
+ return function(t) {
+ return ionic.Animation.Dynamics.Spring(t, duration);
+ }
+ },
+ 'gravity': function(duration) {
+ return function(t) {
+ return ionic.Animation.Dynamics.Gravity(t, duration);
+ }
+ },
+ 'linear': function(duration) {
+ return function(t) {
+ return ionic.Animation.Bezier.linear(t, duration);
+ }
+ },
+ 'ease': function(duration) {
+ return function(t) {
+ return ionic.Animation.Bezier.ease(t, duration);
+ }
+ },
+ 'ease-in': function(duration) {
+ return function(t) {
+ return ionic.Animation.Bezier.easeIn(t, duration);
+ }
+ },
+ 'ease-out': function(duration) {
+ return function(t) {
+ return ionic.Animation.Bezier.easeOut(t, duration);
+ }
+ },
+ 'ease-in-out': function(duration) {
+ return function(t) {
+ return ionic.Animation.Bezier.easeInOut(t, duration);
+ }
+ },
+ 'cubic-bezier': function(x1, y1, x2, y2, duration) {
+ var bz = ionic.Animation.Bezier.cubicBezier(x1, y1, x2, y2);//, t, duration);
+ return function(t) {
+ return bz(t, duration);
+ }
+ }
+ };
+})(window);
diff --git a/js/utils/dom.js b/js/utils/dom.js
index b4b60f1375..44cc9f4be0 100644
--- a/js/utils/dom.js
+++ b/js/utils/dom.js
@@ -26,6 +26,15 @@
};
})();
+ var vendors = ['webkit', 'moz'];
+ for(var x = 0; x < vendors.length && !window.requestAnimationFrame; ++x) {
+ window.requestAnimationFrame = window[vendors[x]+'RequestAnimationFrame'];
+ window.cancelAnimationFrame =
+ window[vendors[x]+'CancelAnimationFrame'] || window[vendors[x]+'CancelRequestAnimationFrame'];
+ }
+ window.cancelAnimationFrame =
+ window[vendors[x]+'CancelAnimationFrame'] || window[vendors[x]+'CancelRequestAnimationFrame'];
+
/**
* @ngdoc utility
* @name ionic.DomUtil
@@ -45,6 +54,9 @@
window._rAF(cb);
},
+ cancelAnimationFrame: function(cb) {
+ },
+
/**
* @ngdoc method
* @name ionic.DomUtil#animationFrameThrottle
@@ -256,5 +268,6 @@
//Shortcuts
ionic.requestAnimationFrame = ionic.DomUtil.requestAnimationFrame;
+ ionic.cancelAnimationFrame = ionic.DomUtil.cancelAnimationFrame;
ionic.animationFrameThrottle = ionic.DomUtil.animationFrameThrottle;
})(window, document, ionic);
diff --git a/test/html/animation.html b/test/html/animation.html
new file mode 100644
index 0000000000..b34c690207
--- /dev/null
+++ b/test/html/animation.html
@@ -0,0 +1,220 @@
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+