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/*!
 * 360 degree Image Slider v2.0.4
 * http://gaurav.jassal.me
 *
 * Copyright 2015, gaurav@jassal.me
 * Dual licensed under the MIT or GPL Version 3 licenses.
 *
 */
(function($) {
  'use strict';
  /**
   * @class ThreeSixty
   * **The ThreeSixty slider class**.
   *
   * This as jQuery plugin to create 360 degree product image slider.
   * The plugin is full customizable with number of options provided. The plugin
   * have the power to display images in any angle 360 degrees. This feature can be
   * used successfully in many use cases e.g. on an e-commerce site to help customers
   * look products in detail, from any angle they desire.
   *
   * **Features**
   *
   * - Smooth Animation
   * - Plenty of option parameters for customization
   * - Api interaction
   * - Simple mouse interaction
   * - Custom behavior tweaking
   * - Support for touch devices
   * - Easy to integrate
   * - No flash
   *
   * Example code:
   *      var product1 = $('.product1').ThreeSixty({
   *        totalFrames: 72,
   *        endFrame: 72,
   *        currentFrame: 1,
   *        imgList: '.threesixty_images',
   *        progress: '.spinner',
   *        imagePath:'/assets/product1/',
   *        filePrefix: 'ipod-',
   *        ext: '.jpg',
   *        height: 265,
   *        width: 400,
   *        navigation: true
   *      });
   * **Note:** There are loads other options that you can override to customize
   * this plugin.

   * @extends jQuery
   * @singleton
   * @param {String} [el] jQuery selector string for the parent container
   * @param {Object} [options] An optional config object
   *
   * @return this
   */
  $.ThreeSixty = function(el, options) {
    // To avoid scope issues, use 'base' instead of 'this'
    // to reference this class from internal events and functions.
    var base = this,
      AppConfig, frames = [],
      VERSION = '2.0.5';
    // Access to jQuery and DOM versions of element
    /**
     * @property {$el}
     * jQuery Dom node attached to the slider inherits all jQuery public functions.
     */
    base.$el = $(el);
    base.el = el;
    // Add a reverse reference to the DOM object
    base.$el.data('ThreeSixty', base);
    /**
     * @method init
     * The function extends the user options with default settings for the
     * slider and initilize the slider.
     * **Style Override example**
     *
     *      var product1 = $('.product1').ThreeSixty({
     *        totalFrames: 72,
     *        endFrame: 72,
     *        currentFrame: 1,
     *        imgList: '.threesixty_images',
     *        progress: '.spinner',
     *        imagePath:'/assets/product1/',
     *        filePrefix: 'ipod-',
     *        ext: '.jpg',
     *        height: 265,
     *        width: 400,
     *        navigation: true,
     *        styles: {
     *          border: 2px solide #b4b4b4,
     *          background: url(http://example.com/images/loader.gif) no-repeat
     *        }
     *      });
     */
    base.init = function() {
      AppConfig = $.extend({}, $.ThreeSixty.defaultOptions, options);
      if(AppConfig.disableSpin) {
        AppConfig.currentFrame = 1;
        AppConfig.endFrame = 1;
      }
      base.initProgress();
      base.loadImages();
    };

    /*
     * Function to resize the height of responsive slider.
     */
    base.resize = function() {
      // calculate height
    };
    /**
     * @method initProgress
     * The function sets initial styles and start the progress indicator
     * to show loading of images.
     *
     * @private
     */
    base.initProgress = function() {
      base.$el.css({
        width: AppConfig.width + 'px',
        height: AppConfig.height + 'px',
        'background-image': 'none !important'
      });
      if(AppConfig.styles) {
        base.$el.css(AppConfig.styles);
      }

      base.responsive();

      base.$el.find(AppConfig.progress).css({
        marginTop: ((AppConfig.height / 2) - 15) + 'px'
      });
      base.$el.find(AppConfig.progress).fadeIn('slow');
      base.$el.find(AppConfig.imgList).hide();
    };

    /**
     * @method loadImages
     * @private
     * The function asynchronously loads images and inject into the slider.
     */
    base.loadImages = function() {
      var li, imageName, image, host, baseIndex;
      li = document.createElement('li');
      baseIndex = AppConfig.zeroBased ? 0 : 1;
      imageName = !AppConfig.imgArray ?
      AppConfig.domain + AppConfig.imagePath + AppConfig.filePrefix + base.zeroPad((AppConfig.loadedImages + baseIndex)) + AppConfig.ext + ((base.browser.isIE()) ? '?' + new Date().getTime() : '') :
      AppConfig.imgArray[AppConfig.loadedImages];
      image = $('<img>').attr('src', imageName).addClass('previous-image').appendTo(li);

      frames.push(image);

      base.$el.find(AppConfig.imgList).append(li);

      $(image).load(function () {
        base.imageLoaded();
      });
    };

    /**
     * @method loadImages
     * @private
     * The function gets triggers once the image is loaded. We also update
     * the progress percentage in this function.
     */
    base.imageLoaded = function () {
      AppConfig.loadedImages += 1;
      $(AppConfig.progress + ' span').text(Math.floor(AppConfig.loadedImages / AppConfig.totalFrames * 100) + '%');
      if (AppConfig.loadedImages >= AppConfig.totalFrames) {
        if(AppConfig.disableSpin) {
          frames[0].removeClass('previous-image').addClass('current-image');
        }
        $(AppConfig.progress).fadeOut('slow', function () {
          $(this).hide();
          base.showImages();
          base.showNavigation();
        });
      } else {
        base.loadImages();
      }
    };

    /**
     * @method loadImages
     * @private
     * This function is called when all the images are loaded.
     * **The function does following operations**
     * - Removes background image placeholder
     * - Displays the 360 images
     * - Initilizes mouse intraction events
     */
    base.showImages = function () {
      base.$el.find('.txtC').fadeIn();
      base.$el.find(AppConfig.imgList).fadeIn();
      base.ready = true;
      AppConfig.ready = true;

      if (AppConfig.drag) {
        base.initEvents();
      }
      base.refresh();
      base.initPlugins();
      AppConfig.onReady();

      setTimeout(function() { base.responsive(); }, 50);
    };

    /**
     * The function to initilize external plugin
     */
    base.initPlugins = function () {
      $.each(AppConfig.plugins, function(i, plugin) {
        if(typeof $[plugin] === 'function') {
          $[plugin].call(base, base.$el, AppConfig);
        } else {
          throw new Error(plugin + ' not available.');
        }
      });
    };

    /**
     * @method showNavigation
     * Creates a navigation panel if navigation is set to true in the
     * settings.
     */
    base.showNavigation = function() {
      if (AppConfig.navigation && !AppConfig.navigation_init) {
        var nav_bar, next, previous, play_stop;

        nav_bar = $('<div/>').attr('class', 'nav_bar');

        next = $('<a/>').attr({
          'href': '#',
          'class': 'nav_bar_next'
        }).html('next');

        previous = $('<a/>').attr({
          'href': '#',
          'class': 'nav_bar_previous'
        }).html('previous');

        play_stop = $('<a/>').attr({
          'href': '#',
          'class': 'nav_bar_play'
        }).html('play');

        nav_bar.append(previous);
        nav_bar.append(play_stop);
        nav_bar.append(next);

        base.$el.prepend(nav_bar);

        next.bind('mousedown touchstart', base.next);
        previous.bind('mousedown touchstart', base.previous);
        play_stop.bind('mousedown touchstart', base.play_stop);
        AppConfig.navigation_init = true;
      }
    };

    /**
     * @method play_stop
     * @private
     * Function toggles the autoplay rotation of 360 slider
     * @param {Object} [event] jQuery events object.
     *
     */

    base.play_stop = function(event) {
      event.preventDefault();

      if (!AppConfig.autoplay) {
        AppConfig.autoplay = true;
        AppConfig.play = setInterval(base.moveToNextFrame, AppConfig.playSpeed);
        $(event.currentTarget).removeClass('nav_bar_play').addClass('nav_bar_stop');
      } else {
        AppConfig.autoplay = false;
        $(event.currentTarget).removeClass('nav_bar_stop').addClass('nav_bar_play');
        clearInterval(AppConfig.play);
        AppConfig.play = null;
      }
    };

    /**
     * @method next
     * Using this function you can rotate 360 to next 5 frames.
     * @param {Object} [event] jQuery events object.
     *
     */

    base.next = function(event) {
      if (event) { event.preventDefault(); }
      AppConfig.endFrame -= 5;
      base.refresh();
    };

    /**
     * @method previous
     * Using this function you can rotate 360 to previous 5 frames.
     * @param {Object} [event] jQuery events object.
     *
     */
    base.previous = function(event) {
      if (event) { event.preventDefault(); }
      AppConfig.endFrame += 5;
      base.refresh();
    };

    /**
     * @method play
     * You are start the auto rotaion for the slider with this function.
     *
     */
    base.play = function(speed) {
      var _speed = speed || AppConfig.playSpeed;
      if (!AppConfig.autoplay) {
        AppConfig.autoplay = true;
        AppConfig.play = setInterval(base.moveToNextFrame, _speed);
      }
    };

    /**
     * @method stop
     * You can stop the auto rotation of the 360 slider with this function.
     *
     */

    base.stop = function() {
      if (AppConfig.autoplay) {
        AppConfig.autoplay = false;
        clearInterval(AppConfig.play);
        AppConfig.play = null;
      }
    };

    /**
     * @method endFrame
     * @private
     * Function animates to previous frame
     *
     */
    base.moveToNextFrame = function () {
      if (AppConfig.autoplayDirection === 1) {
        AppConfig.endFrame -= 1;
      } else {
        AppConfig.endFrame += 1;
      }
      base.refresh();
    };

    /**
     * @method gotoAndPlay
     * @public
     * Function animates to previous frame
     *
     */
    base.gotoAndPlay = function (n) {
      if( AppConfig.disableWrap ) {
        AppConfig.endFrame = n;
        base.refresh();
      } else {
        // Since we could be looped around grab the multiplier
        var multiplier = Math.ceil(AppConfig.endFrame / AppConfig.totalFrames);
        if(multiplier === 0) {
          multiplier = 1;
        }

        // Figure out the quickest path to the requested frame
        var realEndFrame = (multiplier > 1) ?
          AppConfig.endFrame - ((multiplier - 1) * AppConfig.totalFrames) :
          AppConfig.endFrame;

        var currentFromEnd = AppConfig.totalFrames - realEndFrame;

        // Jump past end if it's faster
        var newEndFrame = 0;
        if(n - realEndFrame > 0) {
          // Faster to move the difference ahead?
          if(n - realEndFrame < realEndFrame + (AppConfig.totalFrames - n)) {
            newEndFrame = AppConfig.endFrame + (n - realEndFrame);
          } else {
            newEndFrame = AppConfig.endFrame - (realEndFrame + (AppConfig.totalFrames - n));
          }
        } else {
            // Faster to move the distance back?
            if(realEndFrame - n < currentFromEnd + n) {
              newEndFrame = AppConfig.endFrame - (realEndFrame - n);
            } else {
              newEndFrame = AppConfig.endFrame + (currentFromEnd + n);
            }
        }

        // Now set the end frame
        if(realEndFrame !== n) {
          AppConfig.endFrame = newEndFrame;
          base.refresh();
        }
      }
    };


    /**
     * @method initEvents
     * @private
     * Function initilizes all the mouse and touch events for 360 slider movement.
     *
     */
    base.initEvents = function () {
      base.$el.bind('mousedown touchstart touchmove touchend mousemove click', function (event) {

        event.preventDefault();

        if ((event.type === 'mousedown' && event.which === 1) || event.type === 'touchstart') {
          AppConfig.pointerStartPosX = base.getPointerEvent(event).pageX;
          AppConfig.dragging = true;
        } else if (event.type === 'touchmove') {
          base.trackPointer(event);
        } else if (event.type === 'touchend') {
          AppConfig.dragging = false;
        }
      });

      $(document).bind('mouseup', function (event) {
        //event.preventDefault();
        AppConfig.dragging = false;
        $(this).css('cursor', 'none');
      });

      $(window).bind('resize', function (event) {
        base.responsive();
      });

      $(document).bind('mousemove', function (event) {
        if (AppConfig.dragging) {
          event.preventDefault();
          if(!base.browser.isIE && AppConfig.showCursor) {
            base.$el.css('cursor', 'url(assets/images/hand_closed.png), auto');
          }
        } else {
          if(!base.browser.isIE && AppConfig.showCursor) {
            base.$el.css('cursor', 'url(assets/images/hand_open.png), auto');
          }
        }
        base.trackPointer(event);

      });

      $(window).resize(function() {
        base.resize();
      });
    };

    /**
     * @method getPointerEvent
     * @private
     * Function returns touch pointer events
     *
     * @params {Object} [event]
     */
    base.getPointerEvent = function (event) {
      return event.originalEvent.targetTouches ? event.originalEvent.targetTouches[0] : event;
    };

    /**
     * @method trackPointer
     * @private
     * Function calculates the distance between the start pointer and end pointer/
     *
     * @params {Object} [event]
     */
    base.trackPointer = function (event) {
      if (AppConfig.ready && AppConfig.dragging) {
        AppConfig.pointerEndPosX = base.getPointerEvent(event).pageX;
        if (AppConfig.monitorStartTime < new Date().getTime() - AppConfig.monitorInt) {
          AppConfig.pointerDistance = AppConfig.pointerEndPosX - AppConfig.pointerStartPosX;
          if(AppConfig.pointerDistance > 0){
          AppConfig.endFrame = AppConfig.currentFrame + Math.ceil((AppConfig.totalFrames - 1) * AppConfig.speedMultiplier * (AppConfig.pointerDistance / base.$el.width()));
          }else{
          AppConfig.endFrame = AppConfig.currentFrame + Math.floor((AppConfig.totalFrames - 1) * AppConfig.speedMultiplier * (AppConfig.pointerDistance / base.$el.width()));
          }

          if( AppConfig.disableWrap ) {
            AppConfig.endFrame = Math.min(AppConfig.totalFrames - (AppConfig.zeroBased ? 1 : 0), AppConfig.endFrame);
            AppConfig.endFrame = Math.max((AppConfig.zeroBased ? 0 : 1), AppConfig.endFrame);
          }
          base.refresh();
          AppConfig.monitorStartTime = new Date().getTime();
          AppConfig.pointerStartPosX = base.getPointerEvent(event).pageX;
        }
      }
    };

    /**
     * @method refresh
     * @public
     * Function refeshes the timer and set interval for render cycle.
     *
     */

    base.refresh = function () {
      if (AppConfig.ticker === 0) {
        AppConfig.ticker = setInterval(base.render, Math.round(1000 / AppConfig.framerate));
      }
    };

     /**
     * @method refresh
     * @private
     * Function render the animation frames on the screen with easing effect.
     */

    base.render = function () {
      var frameEasing;
      if (AppConfig.currentFrame !== AppConfig.endFrame) {
        frameEasing = AppConfig.endFrame < AppConfig.currentFrame ? Math.floor((AppConfig.endFrame - AppConfig.currentFrame) * 0.1) : Math.ceil((AppConfig.endFrame - AppConfig.currentFrame) * 0.1);
        base.hidePreviousFrame();
        AppConfig.currentFrame += frameEasing;
        base.showCurrentFrame();
        base.$el.trigger('frameIndexChanged', [base.getNormalizedCurrentFrame(), AppConfig.totalFrames]);
      } else {
        window.clearInterval(AppConfig.ticker);
        AppConfig.ticker = 0;
      }
    };

    /**
     * @method hidePreviousFrame
     * @private
     * Function hide the previous frame in the animation loop.
     */

    base.hidePreviousFrame = function () {
      frames[base.getNormalizedCurrentFrame()].removeClass('current-image').addClass('previous-image');
    };

    /**
     * @method showCurrentFrame
     * @private
     * Function shows the current frame in the animation loop.
     */
    base.showCurrentFrame = function () {
      frames[base.getNormalizedCurrentFrame()].removeClass('previous-image').addClass('current-image');
    };

    /**
     * @method getNormalizedCurrentFrame
     * @private
     * Function normalize and calculate the current frame once the user release the mouse and release touch event.
     */

    base.getNormalizedCurrentFrame = function () {
      var c, e;

      if ( !AppConfig.disableWrap ) {
        c = Math.ceil(AppConfig.currentFrame % AppConfig.totalFrames);
        if (c < 0) {
          c += AppConfig.totalFrames - (AppConfig.zeroBased ? 1 : 0);
        }
      } else {
        c = Math.min(AppConfig.currentFrame, AppConfig.totalFrames - (AppConfig.zeroBased ? 1 : 0));
        e = Math.min(AppConfig.endFrame, AppConfig.totalFrames - (AppConfig.zeroBased ? 1 : 0));
        c = Math.max(c, (AppConfig.zeroBased ? 0 : 1));
        e = Math.max(e, (AppConfig.zeroBased ? 0 : 1));
        AppConfig.currentFrame = c;
        AppConfig.endFrame = e;
      }

      return c;
    };

    /*
     * @method getCurrentFrame
     * Function returns the current active frame.
     *
     * @return Number
     */

    base.getCurrentFrame = function() {
      return AppConfig.currentFrame;
    };

    /*
    * @method responsive
    * Function calculates and set responsive height and width
    *
    */

    base.responsive = function() {
      if(AppConfig.responsive) {
        base.$el.css({
          height: base.$el.find('.current-image').first().css('height'),
          width: '100%'
        });
      }
    };

    /**
     * Function to return with zero padding.
     */
    base.zeroPad = function (num) {
        function pad(number, length) {
          var str = number.toString();
          if(AppConfig.zeroPadding) {
            while (str.length < length) {
                str = '0' + str;
            }
          }
          return str;
        }

        var approximateLog = Math.log(AppConfig.totalFrames) / Math.LN10;
        var roundTo = 1e3;
        var roundedLog = Math.round(approximateLog * roundTo) / roundTo;
        var numChars = Math.floor(roundedLog) + 1;
        return pad(num, numChars);
    };

    base.browser = {};

    /**
     * Function to detect if the brower is IE
     * @return {boolean}
     *
     * http://msdn.microsoft.com/en-gb/library/ms537509(v=vs.85).aspx
     */
    base.browser.isIE = function () {
      var rv = -1;
      if (navigator.appName === 'Microsoft Internet Explorer')
      {
        var ua = navigator.userAgent;
        var re  = new RegExp('MSIE ([0-9]{1,}[\\.0-9]{0,})');
        if (re.exec(ua) !== null){
          rv = parseFloat( RegExp.$1 );
        }
      }

      return rv !== -1;
    };


    /**
     * @method getConfig
     * The function returns the extended version of config object the plugin is going to
     * user.
     *
     * @public
     *
     * @return Object
     */
    base.getConfig = function() {
      return AppConfig;
    };

    $.ThreeSixty.defaultOptions = {
      /**
       * @cfg {Boolean} dragging [dragging=false]
       * @private
       * Private propery contains a flags if users is in dragging mode.
       */
      dragging: false,
      /**
       * @cfg {Boolean} ready [ready=false]
       * @private
       * Private propery is set to true is all assets are loading and application is
       * ready to render 360 slider.
       */
      ready: false,
      /**
       * @cfg {Number} pointerStartPosX
       * @private
       * private property mouse pointer start x position when user starts dragging slider.
       */
      pointerStartPosX: 0,
      /**
       * @cfg {Number} pointerEndPosX
       * @private
       * private property mouse pointer start x position when user end dragging slider.
       */
      pointerEndPosX: 0,
      /**
       * @cfg {Number} pointerDistance
       * @private
       * private property contains the distance between the pointerStartPosX and pointerEndPosX
       */
      pointerDistance: 0,
      /**
       * @cfg {Number} monitorStartTime
       * @private
       * private property contains time user took in dragging mouse from pointerStartPosX and pointerEndPosX
       */
      monitorStartTime: 0,
      monitorInt: 10,
      /**
       * @cfg {Number} ticker
       * @private
       * Timer event that renders the 360
       */
      ticker: 0,
      /**
       * @cfg {Number} speedMultiplier
       * This property controls the sensitivity for the 360 slider
       */
      speedMultiplier: 7,
      /**
       * @cfg {Number} totalFrames
       * Set total number for frames used in the 360 rotation
       */
      totalFrames: 180,
      /**
       * @cfg {Number} currentFrame
       * Current frame of the slider.
       */
      currentFrame: 0,
      /**
       * @cfg {Array} endFrame
       * Private perperty contains information about the end frame when user slides the slider.
       */
      endFrame: 0,
      /**
       * @cfg {Number} loadedImages
       * Private property contains count of loaded images.
       */
      loadedImages: 0,
      /**
       * @cfg {Array} framerate
       * Set framerate for the slider animation
       */
      framerate: 60,
      /**
       * @cfg {String} domains
       * Set comma seprated list of all parallel domain from where 360 assets needs to be loaded.
       */
      domains: null,
      /**
       * @cfg {String} domain
       * Domain from where assets needs to be loaded. Use this propery is you want to load all assets from
       * single domain.
       */
      domain: '',
      /**
       * @cfg {Boolean} parallel
       * Set to true if you want to load assets from parallel domain. Default false
       */
      parallel: false,
      /**
       * @cfg {Number} queueAmount
       * Set number of calls to be made on parallel domains.
       */
      queueAmount: 8,
      /**
       * @cfg {Number} idle
       * Mouse Inactivite idle time in seconds. If set more than 0 will auto spine the slider
       */
      idle: 0,
      /**
       * @cfg {String} filePrefix
       * Prefix for the image file name before the numeric value.
       */
      filePrefix: '',
      /**
       * @cfg {String} ext [ext=.png]
       * Slider image extension.
       */
      ext: 'png',
      /**
       * @cfg {Object} height [300]
       * Height of the slider
       */
      height: 300,
      /**
       * @cfg {Number} width [300]
       * Width of the slider
       */
      width: 300,
      /**
       * @cfg {Object} styles
       * CSS Styles for the 360 slider
       */
      styles: {},
      /**
       * @cfg {Boolean} navigation[false]
       * State if navigation controls are visible or not.
       */
      navigation: false,
      /**
       * @cfg {Boolean} autoplay[false]
       * Autoplay the 360 animation
       */
      autoplay: false,
      /**
       * @cfg {number} autoplayDirection [1]
       * Direction for autoplay the 360 animation. 1 for right spin, and -1 for left spin.
       */
      autoplayDirection: 1,
      /**
       * Property to disable auto spin
       * @type {Boolean}
       */
      disableSpin: false,
      /**
       * Property to disable infinite wrap
       * @type {Boolean}
       */
      disableWrap: false,
      /**
       * Responsive width
       * @type {Boolean}
       */
      responsive: false,
      /**
       * Zero Padding for filenames
       * @type {Boolean}
       */
      zeroPadding: false,
      /**
       * Zero based for image filenames starting at 0
       * @type {Boolean}
       */
      zeroBased: false,
      /**
       * @type {Array}
       * List of plugins
       */
      plugins: [],
      /**
       * @type {Boolean}
       * Show hand cursor on drag
       */
      showCursor: false,
      /**
       * @cfg {Boolean} drag
       * Set it to false if you want to disable mousedrag or touch events
       */
      drag: true,
      /**
       * @cfg {Function} onReady
       * Callback triggers once all images are loaded and ready to render on the screen
       */
      onReady: function() {},
      /**
       * @cfg {String} imgList
       * Set ul element where image will be loaded
       */
      imgList: '.threesixty_images',
      /**
       * @cfg {Array} imgArray
       * Use set of images in array to load images
       */
      imgArray: null,
      /**
      * @cfg {Number} playSpeed
      * Value to control the speed of play button rotation
      */
      playSpeed: 100
    };
    base.init();
  };

  $.fn.ThreeSixty = function(options) {
    return Object.create(new $.ThreeSixty(this, options));
  };
}(jQuery));
/**
 *
 * Object.create method for perform as a fallback if method not available.
 * The syntax just takes away the illusion that JavaScript uses Classical Inheritance.
 */
if(typeof Object.create !== 'function') {
  Object.create = function(o) {
    'use strict';

    function F() {}
    F.prototype = o;
    return new F();
  };
}