/**
Torque 2.16.3
Temporal mapping for CARTO
https://github.com/cartodb/torque
**/


!function(e){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=e();else if("function"==typeof define&&define.amd)define([],e);else{var f;"undefined"!=typeof window?f=window:"undefined"!=typeof global?f=global:"undefined"!=typeof self&&(f=self),f.torque=e()}}(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
/**
 * Abstract handler for animator steps
 */
var AnimatorStepsRange = function(start, end) {
  if (start < 0) throw new Error('start must be a positive number');
  if (start >= end) throw new Error('start must be smaller than end');

  this.start = start;
  this.end = end;
};

AnimatorStepsRange.prototype = {

  diff: function() {
    return this.end - this.start;
  },

  isLast: function(step) {
    // round step into an integer, to be able to compare number as expected (also converts bad input to 0)
    return (step | 0) === this.end;
  }
};

module.exports = AnimatorStepsRange;

},{}],2:[function(require,module,exports){
(function (global){
var torque = require('./');
var AnimatorStepsRange = require('./animator-steps-range');

var requestAnimationFrame = global.requestAnimationFrame
    || global.mozRequestAnimationFrame
    || global.webkitRequestAnimationFrame
    || global.msRequestAnimationFrame
    || function(callback) { return global.setTimeout(callback, 1000 / 60); };

var cancelAnimationFrame = global.cancelAnimationFrame
    || global.mozCancelAnimationFrame
    || global.webkitCancelAnimationFrame
    || global.msCancelAnimationFrame
    || function(id) { clearTimeout(id); };

  /**
   * options:
   *    animationDuration in seconds
   *    animationDelay in seconds
   */
  function Animator(callback, options) {
    if(!options.steps) {
      throw new Error("steps option missing")
    }
    this.options = options;
    this.running = false;
    this._tick = this._tick.bind(this);
    this._t0 = +new Date();
    this.callback = callback;
    this._time = 0.0;
    this.itemsReady = false;

    this.options = torque.extend({
        animationDelay: 0,
        maxDelta: 0.2,
        loop: options.loop === undefined ? true : options.loop
    }, this.options);

    this.steps(options.steps);
  }

  Animator.prototype = {

    start: function() {
        this.running = true;
        requestAnimationFrame(this._tick);
        this.options.onStart && this.options.onStart();
        if (this.stepsRange().diff() === 1) {
          this.running = false;
        }
    },

    isRunning: function() {
      return this.running;
    },

    stop: function() {
      this.pause();
      this.time(this.stepsRange().start);
      this.options.onStop && this.options.onStop();
    },

    // real animation time
    time: function(_) {
      if (!arguments.length) return this._time;
      this._time = _;
      var t = this.range(this.domain(this._time));
      this.callback(t);
    },

    toggle: function() {
      if (this.running) {
        this.pause()
      } else {
        this.start()
      }
    },

    rescale: function() {
      this.domainInv = torque.math.linear(this.options.animationDelay, this.options.animationDelay + this.options.animationDuration);
      this.domain = this.domainInv.invert();
      this.range = torque.math.linear(0, this._defaultStepsRange.end);
      this.rangeInv = this.range.invert();
      this.time(this._time);
      this.running? this.start(): this.pause();
      return this;
    },

    duration: function(_) {
      if (!arguments.length)  return this.options.animationDuration;
      this.options.animationDuration = _;
      if (this.time() > _) {
        this.time(0);
      }
      this.rescale();
      return this;
    },

    steps: function(_) {
      this.options.steps = _;
      this._defaultStepsRange = new AnimatorStepsRange(0, _);
      return this.rescale();
    },

    // Returns or sets a (custom) steps range
    // Setting a steps range must be within the full range
    stepsRange: function(start, end) {
      if (arguments.length === 2) {
        if (start < this._defaultStepsRange.start) throw new Error('start must be within default steps range');
        if (end > this._defaultStepsRange.end) throw new Error('end must be within default steps range');

        this._customStepsRange = new AnimatorStepsRange(start, end);
        this.options.onStepsRange && this.options.onStepsRange();

        // Change current step if it's outside the new custom range
        var step = this.step() | 0; // round to an integer
        if (step < start || step > end) {
          this.step(start);
        }
      }
      return this._customStepsRange || this._defaultStepsRange;
    },

    removeCustomStepsRange: function() {
      this._customStepsRange = undefined;
      this.options.onStepsRange && this.options.onStepsRange();
    },

    step: function(s) {
      if(arguments.length === 0) return this.range(this.domain(this._time));
      this._time = this.domainInv(this.rangeInv(s));
    },

    pause: function() {
      this.running = false;
      cancelAnimationFrame(this._tick);
      this.options.onPause && this.options.onPause();
    },

    _tick: function() {
      var t1 = +new Date();
      var delta = (t1 - this._t0)*0.001;
      // if delta is really big means the tab lost the focus
      // at some point, so limit delta change
      delta = Math.min(this.options.maxDelta, delta);
      this._t0 = t1;
      this._time += delta;

      var stepsRange = this.stepsRange();
      if (stepsRange.isLast(this.step())) {
        if(!this.options.loop){
          // set time to max time
          this.time(this.options.animationDuration);
          this.pause();
        } else {
          this.step(stepsRange.start);
        }
      }
      if(this.running) {
        this.time(this._time);
        requestAnimationFrame(this._tick);
      }
    }

  };

module.exports = Animator;

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./":11,"./animator-steps-range":1}],3:[function(require,module,exports){
var _torque_reference_latest = {
    "version": "1.0.0",
    "style": {
        "comp-op": {
            "css": "comp-op",
            "default-value": "src-over",
            "default-meaning": "add the current layer on top of other layers",
            "doc": "Composite operation. This defines how this layer should behave relative to layers atop or below it.",
            "type": [
                "src", //
                "src-over", //
                "dst-over", //
                "src-in", //
                "dst-in", //
                "src-out", //
                "dst-out", //
                "src-atop", //
                "dst-atop", //
                "xor", //
                "darken", //
                "lighten" //
            ]
        }
    },
    "layer" : {
        "buffer-size": {
            "default-value": "0",
            "type":"float",
            "default-meaning": "No buffer will be used",
            "doc": "Extra tolerance around the Layer extent (in pixels) used to when querying and (potentially) clipping the layer data during rendering"
        },
        "-torque-clear-color": {
            "css": "-torque-clear-color",
            "type": "color",
            "default-value": "rgba(255, 255, 255, 0)",
            "default-meaning": "full clear",
            "doc": "color used to clear canvas on each frame"
        },
        "-torque-frame-count": {
            "css": "-torque-frame-count",
            "default-value": "128",
            "type":"number",
            "default-meaning": "the data is broken into 128 time frames",
            "doc": "Number of animation steps/frames used in the animation. If the data contains a fewere number of total frames, the lesser value will be used."
        },
        "-torque-resolution": {
            "css": "-torque-resolution",
            "default-value": "2",
            "type":"number",
            "default-meaning": "",
            "doc": "Spatial resolution in pixels. A resolution of 1 means no spatial aggregation of the data. Any other resolution of N results in spatial aggregation into cells of NxN pixels. The value N must be power of 2"
        },
        "-torque-animation-duration": {
            "css": "-torque-animation-duration",
            "default-value": "30",
            "type":"number",
            "default-meaning": "the animation lasts 30 seconds",
            "doc": "Animation duration in seconds"
        },
        "-torque-aggregation-function": {
            "css": "-torque-aggregation-function",
            "default-value": "count(cartodb_id)",
            "type": "string",
            "default-meaning": "the value for each cell is the count of points in that cell",
            "doc": "A function used to calculate a value from the aggregate data for each cell. See -torque-resolution"
        },
        "-torque-time-attribute": {
            "css": "-torque-time-attribute",
            "default-value": "time",
            "type": "string",
            "default-meaning": "the data column in your table that is of a time based type",
            "doc": "The table column that contains the time information used create the animation"
        },
        "-torque-data-aggregation": {
            "css": "-torque-data-aggregation",
            "default-value": "linear",
            "type": [
              "cumulative"
            ],
            "default-meaning": "previous values are discarded",
            "doc": "A linear animation will discard previous values while a cumulative animation will accumulate them until it restarts"
        }
    },
    "symbolizers" : {
        "*": {
            "comp-op": {
                "css": "comp-op",
                "default-value": "src-over",
                "default-meaning": "add the current layer on top of other layers",
                "doc": "Composite operation. This defines how this layer should behave relative to layers atop or below it.",
                "type": [
                  "src", //
                  "src-over", //
                  "dst-over", //
                  "src-in", //
                  "dst-in", //
                  "src-out", //
                  "dst-out", //
                  "src-atop", //
                  "dst-atop", //
                  "xor", //
                  "darken", //
                  "lighten" //
                ]
            },
            "opacity": {
                "css": "opacity",
                "type": "float",
                "doc": "An alpha value for the style (which means an alpha applied to all features in separate buffer and then composited back to main buffer)",
                "default-value": 1,
                "default-meaning": "no separate buffer will be used and no alpha will be applied to the style after rendering"
            }
        },
        "trail": {
          "steps": {
            "css": "trail-steps",
            "type": "float",
            "default-value": 1,
            "default-meaning": "no trail steps",
            "doc": "How many steps of trails are going to be rendered"
          }
        },
        "polygon": {
            "fill": {
                "css": "polygon-fill",
                "type": "color",
                "default-value": "rgba(128,128,128,1)",
                "default-meaning": "gray and fully opaque (alpha = 1), same as rgb(128,128,128)",
                "doc": "Fill color to assign to a polygon"
            },
            "fill-opacity": {
                "css": "polygon-opacity",
                "type": "float",
                "doc": "The opacity of the polygon",
                "default-value": 1,
                "default-meaning": "opaque"
            }
        },
        "line": {
            "stroke": {
                "css": "line-color",
                "default-value": "rgba(0,0,0,1)",
                "type": "color",
                "default-meaning": "black and fully opaque (alpha = 1), same as rgb(0,0,0)",
                "doc": "The color of a drawn line"
            },
            "stroke-width": {
                "css": "line-width",
                "default-value": 1,
                "type": "float",
                "doc": "The width of a line in pixels"
            },
            "stroke-opacity": {
                "css": "line-opacity",
                "default-value": 1,
                "type": "float",
                "default-meaning": "opaque",
                "doc": "The opacity of a line"
            },
            "stroke-linejoin": {
                "css": "line-join",
                "default-value": "miter",
                "type": [
                    "miter",
                    "round",
                    "bevel"
                ],
                "doc": "The behavior of lines when joining"
            },
            "stroke-linecap": {
                "css": "line-cap",
                "default-value": "butt",
                "type": [
                    "butt",
                    "round",
                    "square"
                ],
                "doc": "The display of line endings"
            }
        },
        "markers": {
            "file": {
                "css": "marker-file",
                "doc": "An SVG file that this marker shows at each placement. If no file is given, the marker will show an ellipse.",
                "default-value": "",
                "default-meaning": "An ellipse or circle, if width equals height",
                "type": "uri"
            },
            "opacity": {
                "css": "marker-opacity",
                "doc": "The overall opacity of the marker, if set, overrides both the opacity of both the fill and stroke",
                "default-value": 1,
                "default-meaning": "The stroke-opacity and fill-opacity will be used",
                "type": "float"
            },
            "fill-opacity": {
                "css": "marker-fill-opacity",
                "doc": "The fill opacity of the marker",
                "default-value": 1,
                "default-meaning": "opaque",
                "type": "float"
            },
            "stroke": {
                "css": "marker-line-color",
                "doc": "The color of the stroke around a marker shape.",
                "default-value": "black",
                "type": "color"
            },
            "stroke-width": {
                "css": "marker-line-width",
                "doc": "The width of the stroke around a marker shape, in pixels. This is positioned on the boundary, so high values can cover the area itself.",
                "type": "float"
            },
            "stroke-opacity": {
                "css": "marker-line-opacity",
                "default-value": 1,
                "default-meaning": "opaque",
                "doc": "The opacity of a line",
                "type": "float"
            },
            "fill": {
                "css": "marker-fill",
                "default-value": "blue",
                "doc": "The color of the area of the marker.",
                "type": "color"
            },
            "marker-type": {
                "css": "marker-type",
                "type": [
                    "rectangle",
                    "ellipse"
                ],
                "default-value": "ellipse",
                "doc": "The default marker-type. If a SVG file is not given as the marker-file parameter, the renderer provides either an rectangle or an ellipse (a circle if height is equal to width)"
            },
             "width": {
                "css": "marker-width",
                "default-value": 10,
                "doc": "The width of the marker, if using one of the default types.",
                "type": "float"
            }
        },
        "point": {
            "file": {
                "css": "point-file",
                "type": "uri",
                "required": false,
                "default-value": "none",
                "doc": "Image file to represent a point"
            },
            "opacity": {
                "css": "point-opacity",
                "type": "float",
                "default-value": 1.0,
                "default-meaning": "Fully opaque",
                "doc": "A value from 0 to 1 to control the opacity of the point"
            }
        }
    },
    "colors": {
        "aliceblue":  [240, 248, 255],
        "antiquewhite":  [250, 235, 215],
        "aqua":  [0, 255, 255],
        "aquamarine":  [127, 255, 212],
        "azure":  [240, 255, 255],
        "beige":  [245, 245, 220],
        "bisque":  [255, 228, 196],
        "black":  [0, 0, 0],
        "blanchedalmond":  [255,235,205],
        "blue":  [0, 0, 255],
        "blueviolet":  [138, 43, 226],
        "brown":  [165, 42, 42],
        "burlywood":  [222, 184, 135],
        "cadetblue":  [95, 158, 160],
        "chartreuse":  [127, 255, 0],
        "chocolate":  [210, 105, 30],
        "coral":  [255, 127, 80],
        "cornflowerblue":  [100, 149, 237],
        "cornsilk":  [255, 248, 220],
        "crimson":  [220, 20, 60],
        "cyan":  [0, 255, 255],
        "darkblue":  [0, 0, 139],
        "darkcyan":  [0, 139, 139],
        "darkgoldenrod":  [184, 134, 11],
        "darkgray":  [169, 169, 169],
        "darkgreen":  [0, 100, 0],
        "darkgrey":  [169, 169, 169],
        "darkkhaki":  [189, 183, 107],
        "darkmagenta":  [139, 0, 139],
        "darkolivegreen":  [85, 107, 47],
        "darkorange":  [255, 140, 0],
        "darkorchid":  [153, 50, 204],
        "darkred":  [139, 0, 0],
        "darksalmon":  [233, 150, 122],
        "darkseagreen":  [143, 188, 143],
        "darkslateblue":  [72, 61, 139],
        "darkslategrey":  [47, 79, 79],
        "darkturquoise":  [0, 206, 209],
        "darkviolet":  [148, 0, 211],
        "deeppink":  [255, 20, 147],
        "deepskyblue":  [0, 191, 255],
        "dimgray":  [105, 105, 105],
        "dimgrey":  [105, 105, 105],
        "dodgerblue":  [30, 144, 255],
        "firebrick":  [178, 34, 34],
        "floralwhite":  [255, 250, 240],
        "forestgreen":  [34, 139, 34],
        "fuchsia":  [255, 0, 255],
        "gainsboro":  [220, 220, 220],
        "ghostwhite":  [248, 248, 255],
        "gold":  [255, 215, 0],
        "goldenrod":  [218, 165, 32],
        "gray":  [128, 128, 128],
        "grey":  [128, 128, 128],
        "green":  [0, 128, 0],
        "greenyellow":  [173, 255, 47],
        "honeydew":  [240, 255, 240],
        "hotpink":  [255, 105, 180],
        "indianred":  [205, 92, 92],
        "indigo":  [75, 0, 130],
        "ivory":  [255, 255, 240],
        "khaki":  [240, 230, 140],
        "lavender":  [230, 230, 250],
        "lavenderblush":  [255, 240, 245],
        "lawngreen":  [124, 252, 0],
        "lemonchiffon":  [255, 250, 205],
        "lightblue":  [173, 216, 230],
        "lightcoral":  [240, 128, 128],
        "lightcyan":  [224, 255, 255],
        "lightgoldenrodyellow":  [250, 250, 210],
        "lightgray":  [211, 211, 211],
        "lightgreen":  [144, 238, 144],
        "lightgrey":  [211, 211, 211],
        "lightpink":  [255, 182, 193],
        "lightsalmon":  [255, 160, 122],
        "lightseagreen":  [32, 178, 170],
        "lightskyblue":  [135, 206, 250],
        "lightslategray":  [119, 136, 153],
        "lightslategrey":  [119, 136, 153],
        "lightsteelblue":  [176, 196, 222],
        "lightyellow":  [255, 255, 224],
        "lime":  [0, 255, 0],
        "limegreen":  [50, 205, 50],
        "linen":  [250, 240, 230],
        "magenta":  [255, 0, 255],
        "maroon":  [128, 0, 0],
        "mediumaquamarine":  [102, 205, 170],
        "mediumblue":  [0, 0, 205],
        "mediumorchid":  [186, 85, 211],
        "mediumpurple":  [147, 112, 219],
        "mediumseagreen":  [60, 179, 113],
        "mediumslateblue":  [123, 104, 238],
        "mediumspringgreen":  [0, 250, 154],
        "mediumturquoise":  [72, 209, 204],
        "mediumvioletred":  [199, 21, 133],
        "midnightblue":  [25, 25, 112],
        "mintcream":  [245, 255, 250],
        "mistyrose":  [255, 228, 225],
        "moccasin":  [255, 228, 181],
        "navajowhite":  [255, 222, 173],
        "navy":  [0, 0, 128],
        "oldlace":  [253, 245, 230],
        "olive":  [128, 128, 0],
        "olivedrab":  [107, 142, 35],
        "orange":  [255, 165, 0],
        "orangered":  [255, 69, 0],
        "orchid":  [218, 112, 214],
        "palegoldenrod":  [238, 232, 170],
        "palegreen":  [152, 251, 152],
        "paleturquoise":  [175, 238, 238],
        "palevioletred":  [219, 112, 147],
        "papayawhip":  [255, 239, 213],
        "peachpuff":  [255, 218, 185],
        "peru":  [205, 133, 63],
        "pink":  [255, 192, 203],
        "plum":  [221, 160, 221],
        "powderblue":  [176, 224, 230],
        "purple":  [128, 0, 128],
        "red":  [255, 0, 0],
        "rosybrown":  [188, 143, 143],
        "royalblue":  [65, 105, 225],
        "saddlebrown":  [139, 69, 19],
        "salmon":  [250, 128, 114],
        "sandybrown":  [244, 164, 96],
        "seagreen":  [46, 139, 87],
        "seashell":  [255, 245, 238],
        "sienna":  [160, 82, 45],
        "silver":  [192, 192, 192],
        "skyblue":  [135, 206, 235],
        "slateblue":  [106, 90, 205],
        "slategray":  [112, 128, 144],
        "slategrey":  [112, 128, 144],
        "snow":  [255, 250, 250],
        "springgreen":  [0, 255, 127],
        "steelblue":  [70, 130, 180],
        "tan":  [210, 180, 140],
        "teal":  [0, 128, 128],
        "thistle":  [216, 191, 216],
        "tomato":  [255, 99, 71],
        "turquoise":  [64, 224, 208],
        "violet":  [238, 130, 238],
        "wheat":  [245, 222, 179],
        "white":  [255, 255, 255],
        "whitesmoke":  [245, 245, 245],
        "yellow":  [255, 255, 0],
        "yellowgreen":  [154, 205, 50],
        "transparent":  [0, 0, 0, 0]
    }
};

module.exports = {
  version: {
    latest: _torque_reference_latest,
    '1.0.0': _torque_reference_latest
  }
};

},{}],4:[function(require,module,exports){
(function (global){
//
// common functionallity for torque layers
//
var carto = global.carto || require('carto');

function TorqueLayer() {}

TorqueLayer.prototype = {
};

TorqueLayer.optionsFromLayer = function(mapConfig) {
  var opts = {};
  if (!mapConfig) return opts;
  var attrs = {
    'buffer-size': 'buffer-size',
    '-torque-frame-count': 'steps',
    '-torque-resolution': 'resolution',
    '-torque-animation-duration': 'animationDuration',
    '-torque-aggregation-function': 'countby',
    '-torque-time-attribute': 'column',
    '-torque-data-aggregation': 'data_aggregation'
  };
  for (var i in attrs) {
    var v = mapConfig.eval(i);
    if (v !== undefined) {
      var a = attrs[i];
      opts[a] = v;
    }
  }
  return opts;
};

TorqueLayer.optionsFromCartoCSS = function(cartocss) {
  var shader = new carto.RendererJS().render(cartocss);
  var mapConfig = shader.findLayer({ name: 'Map' });
  return TorqueLayer.optionsFromLayer(mapConfig);
};

module.exports.TorqueLayer = TorqueLayer;

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"carto":undefined}],5:[function(require,module,exports){
(function (global){
  var Event = {};
  Event.on = function(evt, callback) {
      var cb = this._evt_callbacks = this._evt_callbacks || {};
      var l = cb[evt] || (cb[evt] = []);
      l.push(callback);
      return this;
  };

  Event.trigger = function(evt) {
      var c = this._evt_callbacks && this._evt_callbacks[evt];
      for(var i = 0; c && i < c.length; ++i) {
          c[i].apply(this, Array.prototype.slice.call(arguments, 1));
      }
      return this;
  };

  Event.fire = Event.trigger;

  Event.off = function (evt, callback) {
      var c = this._evt_callbacks && this._evt_callbacks[evt];
      if (c && !callback) {
        delete this._evt_callbacks[evt];
        return this;
     }
     var remove = [];
     for(var i = 0; c && i < c.length; ++i) {
       if(c[i] === callback) remove.push(i);
     }
     while((i = remove.pop()) !== undefined) c.splice(i, 1);
    return this;
  };

  Event.callbacks = function(evt) {
    return (this._evt_callbacks && this._evt_callbacks[evt]) || [];
  };

  function extend() {
      var objs = arguments;
      var a = objs[0];
      for (var i = 1; i < objs.length; ++i) {
          var b = objs[i];
          for (var k in b) {
              a[k] = b[k];
          }
      }
      return a;
  }

  function clone(a) {
    return extend({}, a);
  }

  function isFunction(f) {
    return typeof f == 'function' || false;
  }

  function isArray(value) {
      return value && typeof value == 'object' && Object.prototype.toString.call(value) == '[object Array]';
  }

  // types
  var types = {
    Uint8Array: typeof(global['Uint8Array']) !== 'undefined' ? global.Uint8Array : Array,
    Uint8ClampedArray: typeof(global['Uint8ClampedArray']) !== 'undefined' ? global.Uint8ClampedArray: Array,
    Uint32Array: typeof(global['Uint32Array']) !== 'undefined' ? global.Uint32Array : Array,
    Int16Array: typeof(global['Int16Array']) !== 'undefined' ? global.Int16Array : Array,
    Int32Array: typeof(global['Int32Array']) !== 'undefined' ? global.Int32Array: Array
  };

  function isBrowserSupported() {
    return !!document.createElement('canvas');
  }

  function userAgent() {
      return typeof navigator !== 'undefined' ? navigator.userAgent : '';
  }

  var flags = {
    sprites_to_images: userAgent().indexOf('Safari') === -1 && userAgent().indexOf('Firefox') === -1
  };

module.exports = {
    Event: Event,
    extend: extend,
    clone: clone,
    isFunction: isFunction,
    isArray: isArray,
    types: types,
    isBrowserSupported: isBrowserSupported,
    flags: flags
};

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{}],6:[function(require,module,exports){
/**
 * @license
 * Copyright 2013 Google Inc. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/**
 * @fileoverview Extends OverlayView to provide a canvas "Layer".
 * @author Brendan Kenny
 */

/**
 * A map layer that provides a canvas over the slippy map and a callback
 * system for efficient animation. Requires canvas and CSS 2D transform
 * support.
 * @constructor
 * @extends google.maps.OverlayView
 * @param {CanvasLayerOptions=} opt_options Options to set in this CanvasLayer.
 */

function CanvasLayer(opt_options) {
  /**
   * If true, canvas is in a map pane and the OverlayView is fully functional.
   * See google.maps.OverlayView.onAdd for more information.
   * @type {boolean}
   * @private
   */
  this.isAdded_ = false;

  /**
   * If true, each update will immediately schedule the next.
   * @type {boolean}
   * @private
   */
  this.isAnimated_ = false;

  /**
   * The name of the MapPane in which this layer will be displayed.
   * @type {string}
   * @private
   */
  this.paneName_ = CanvasLayer.DEFAULT_PANE_NAME_;

  /**
   * A user-supplied function called whenever an update is required. Null or
   * undefined if a callback is not provided.
   * @type {?function=}
   * @private
   */
  this.updateHandler_ = null;

  /**
   * A user-supplied function called whenever an update is required and the
   * map has been resized since the last update. Null or undefined if a
   * callback is not provided.
   * @type {?function}
   * @private
   */
  this.resizeHandler_ = null;

  /**
   * The LatLng coordinate of the top left of the current view of the map. Will
   * be null when this.isAdded_ is false.
   * @type {google.maps.LatLng}
   * @private
   */
  this.topLeft_ = null;

  /**
   * The map-pan event listener. Will be null when this.isAdded_ is false. Will
   * be null when this.isAdded_ is false.
   * @type {?function}
   * @private
   */
  this.centerListener_ = null;

  /**
   * The map-resize event listener. Will be null when this.isAdded_ is false.
   * @type {?function}
   * @private
   */
  this.resizeListener_ = null;

  /**
   * If true, the map size has changed and this.resizeHandler_ must be called
   * on the next update.
   * @type {boolean}
   * @private
   */
  this.needsResize_ = true;

  /**
   * A browser-defined id for the currently requested callback. Null when no
   * callback is queued.
   * @type {?number}
   * @private
   */
  this.requestAnimationFrameId_ = null;

  var canvas = document.createElement('canvas');
  canvas.style.position = 'absolute';
  canvas.style.top = 0;
  canvas.style.left = 0;
  canvas.style.pointerEvents = 'none';

  /**
   * The canvas element.
   * @type {!HTMLCanvasElement}
   */
  this.canvas = canvas;

  /**
   * Simple bind for functions with no args for bind-less browsers (Safari).
   * @param {Object} thisArg The this value used for the target function.
   * @param {function} func The function to be bound.
   */
  function simpleBindShim(thisArg, func) {
    return function() { func.apply(thisArg); };
  }

  /**
   * A reference to this.repositionCanvas_ with this bound as its this value.
   * @type {function}
   * @private
   */
  this.repositionFunction_ = simpleBindShim(this, this.repositionCanvas_);

  /**
   * A reference to this.resize_ with this bound as its this value.
   * @type {function}
   * @private
   */
  this.resizeFunction_ = simpleBindShim(this, this.resize_);

  /**
   * A reference to this.update_ with this bound as its this value.
   * @type {function}
   * @private
   */
  this.requestUpdateFunction_ = simpleBindShim(this, this.update_);

  // set provided options, if any
  if (opt_options) {
    this.setOptions(opt_options);
  }
}

CanvasLayer.prototype = new google.maps.OverlayView();

/**
 * The default MapPane to contain the canvas.
 * @type {string}
 * @const
 * @private
 */
CanvasLayer.DEFAULT_PANE_NAME_ = 'overlayLayer';

/**
 * Transform CSS property name, with vendor prefix if required. If browser
 * does not support transforms, property will be ignored.
 * @type {string}
 * @const
 * @private
 */
CanvasLayer.CSS_TRANSFORM_ = (function() {
  var div = document.createElement('div');
  var transformProps = [
    'transform',
    'WebkitTransform',
    'MozTransform',
    'OTransform',
    'msTransform'
  ];
  for (var i = 0; i < transformProps.length; i++) {
    var prop = transformProps[i];
    if (div.style[prop] !== undefined) {
      return prop;
    }
  }

  // return unprefixed version by default
  return transformProps[0];
})();

/**
 * The requestAnimationFrame function, with vendor-prefixed or setTimeout-based
 * fallbacks. MUST be called with window as thisArg.
 * @type {function}
 * @param {function} callback The function to add to the frame request queue.
 * @return {number} The browser-defined id for the requested callback.
 * @private
 */
CanvasLayer.prototype.requestAnimFrame_ =
    window.requestAnimationFrame ||
    window.webkitRequestAnimationFrame ||
    window.mozRequestAnimationFrame ||
    window.oRequestAnimationFrame ||
    window.msRequestAnimationFrame ||
    function(callback) {
      return window.setTimeout(callback, 1000 / 60);
    };

/**
 * The cancelAnimationFrame function, with vendor-prefixed fallback. Does not
 * fall back to clearTimeout as some platforms implement requestAnimationFrame
 * but not cancelAnimationFrame, and the cost is an extra frame on onRemove.
 * MUST be called with window as thisArg.
 * @type {function}
 * @param {number=} requestId The id of the frame request to cancel.
 * @private
 */
CanvasLayer.prototype.cancelAnimFrame_ =
    window.cancelAnimationFrame ||
    window.webkitCancelAnimationFrame ||
    window.mozCancelAnimationFrame ||
    window.oCancelAnimationFrame ||
    window.msCancelAnimationFrame ||
    function(requestId) {};

/**
 * Sets any options provided. See CanvasLayerOptions for more information.
 * @param {CanvasLayerOptions} options The options to set.
 */
CanvasLayer.prototype.setOptions = function(options) {
  if (options.animate !== undefined) {
    this.setAnimate(options.animate);
  }

  if (options.paneName !== undefined) {
    this.setPane(options.paneName);
  }

  if (options.updateHandler !== undefined) {
    this.setUpdateHandler(options.updateHandler);
  }

  if (options.resizeHandler !== undefined) {
    this.setResizeHandler(options.resizeHandler);
  }

  if(options.readyHandler) {
    this.readyHandler = options.readyHandler;
  }

};

/**
 * Set the animated state of the layer. If true, updateHandler will be called
 * repeatedly, once per frame. If false, updateHandler will only be called when
 * a map property changes that could require the canvas content to be redrawn.
 * @param {boolean} animate Whether the canvas is animated.
 */
CanvasLayer.prototype.setAnimate = function(animate) {
  this.isAnimated_ = !!animate;

  if (this.isAnimated_) {
    this.scheduleUpdate();
  }
};

/**
 * @return {boolean} Whether the canvas is animated.
 */
CanvasLayer.prototype.isAnimated = function() {
  return this.isAnimated_;
};

/**
 * Set the MapPane in which this layer will be displayed, by name. See
 * {@code google.maps.MapPanes} for the panes available.
 * @param {string} paneName The name of the desired MapPane.
 */
CanvasLayer.prototype.setPaneName = function(paneName) {
  this.paneName_ = paneName;

  this.setPane_();
};

/**
 * Set the opacity for the canvas.
 * 
 * @param {number} opacity The opacity of the canvas
 */
CanvasLayer.prototype.setOpacity = function (opacity) {
  this.canvas.style.opacity = opacity;
};

/**
 * Get the canvases opacity.
 * 
 * @return {number} The opacity of the canvas
 */
CanvasLayer.prototype.getOpacity = function () {
  return this.canvas.style.opacity;
};

/**
 * @return {string} The name of the current container pane.
 */
CanvasLayer.prototype.getPaneName = function() {
  return this.paneName_;
};

/**
 * Adds the canvas to the specified container pane. Since this is guaranteed to
 * execute only after onAdd is called, this is when paneName's existence is
 * checked (and an error is thrown if it doesn't exist).
 * @private
 */
CanvasLayer.prototype.setPane_ = function() {
  if (!this.isAdded_) {
    return;
  }

  // onAdd has been called, so panes can be used
  var panes = this.getPanes();
  if (!panes[this.paneName_]) {
    throw new Error('"' + this.paneName_ + '" is not a valid MapPane name.');
  }

  panes[this.paneName_].appendChild(this.canvas);
};

/**
 * Set a function that will be called whenever the parent map and the overlay's
 * canvas have been resized. If opt_resizeHandler is null or unspecified, any
 * existing callback is removed.
 * @param {?function=} opt_resizeHandler The resize callback function.
 */
CanvasLayer.prototype.setResizeHandler = function(opt_resizeHandler) {
  this.resizeHandler_ = opt_resizeHandler;
};

/**
 * Set a function that will be called when a repaint of the canvas is required.
 * If opt_updateHandler is null or unspecified, any existing callback is
 * removed.
 * @param {?function=} opt_updateHandler The update callback function.
 */
CanvasLayer.prototype.setUpdateHandler = function(opt_updateHandler) {
  this.updateHandler_ = opt_updateHandler;
};

/**
 * @inheritDoc
 */
CanvasLayer.prototype.onAdd = function() {
  if (this.isAdded_) {
    return;
  }

  this.isAdded_ = true;
  this.setPane_();

  this.resizeListener_ = google.maps.event.addListener(this.getMap(),
      'resize', this.resizeFunction_);
  this.centerListener_ = google.maps.event.addListener(this.getMap(),
      'center_changed', this.repositionFunction_);

  this.resize_();
  this.repositionCanvas_();
  this.readyHandler && this.readyHandler();
};

/**
 * @inheritDoc
 */
CanvasLayer.prototype.onRemove = function() {
  if (!this.isAdded_) {
    return;
  }

  this.isAdded_ = false;
  this.topLeft_ = null;

  // remove canvas and listeners for pan and resize from map
  this.canvas.parentElement.removeChild(this.canvas);
  if (this.centerListener_) {
    google.maps.event.removeListener(this.centerListener_);
    this.centerListener_ = null;
  }
  if (this.resizeListener_) {
    google.maps.event.removeListener(this.resizeListener_);
    this.resizeListener_ = null;
  }

  // cease canvas update callbacks
  if (this.requestAnimationFrameId_) {
    this.cancelAnimFrame_.call(window, this.requestAnimationFrameId_);
    this.requestAnimationFrameId_ = null;
  }
};

/**
 * The internal callback for resize events that resizes the canvas to keep the
 * map properly covered.
 * @private
 */
CanvasLayer.prototype.resize_ = function() {
  // TODO(bckenny): it's common to use a smaller canvas but use CSS to scale
  // what is drawn by the browser to save on fill rate. Add an option to do
  // this.

  if (!this.isAdded_) {
    return;
  }

  var map = this.getMap();
  var width = map.getDiv().offsetWidth;
  var height = map.getDiv().offsetHeight;
  var oldWidth = this.canvas.width;
  var oldHeight = this.canvas.height;

  // resizing may allocate a new back buffer, so do so conservatively
  if (oldWidth !== width || oldHeight !== height) {
    this.canvas.width = width;
    this.canvas.height = height;
    this.canvas.style.width = width + 'px';
    this.canvas.style.height = height + 'px';

    this.needsResize_ = true;
    this.scheduleUpdate();
  }
};

/**
 * @inheritDoc
 */
CanvasLayer.prototype.draw = function() {
  this.repositionCanvas_();
};

/**
 * Internal callback for map view changes. Since the Maps API moves the overlay
 * along with the map, this function calculates the opposite translation to
 * keep the canvas in place.
 * @private
 */
CanvasLayer.prototype.repositionCanvas_ = function() {
  // TODO(bckenny): *should* only be executed on RAF, but in current browsers
  //     this causes noticeable hitches in map and overlay relative
  //     positioning.

  var bounds = this.getMap().getBounds();
  this.topLeft_ = new google.maps.LatLng(bounds.getNorthEast().lat(),
      bounds.getSouthWest().lng());

  // canvas position relative to draggable map's conatainer depends on
  // overlayView's projection, not the map's
  var projection = this.getProjection();
  var divTopLeft = projection.fromLatLngToDivPixel(this.topLeft_);

  // when the zoom level is low, more than one map can be shown in the screen
  // so the canvas should be attach to the map with more are in the screen
  var mapSize = (1 << this.getMap().getZoom())*256;
  if (Math.abs(divTopLeft.x) > mapSize) {
    divTopLeft.x -= mapSize;
  }
  this.canvas.style[CanvasLayer.CSS_TRANSFORM_] = 'translate(' +
      Math.round(divTopLeft.x) + 'px,' + Math.round(divTopLeft.y) + 'px)';

  this.scheduleUpdate();
};

/**
 * Internal callback that serves as main animation scheduler via
 * requestAnimationFrame. Calls resize and update callbacks if set, and
 * schedules the next frame if overlay is animated.
 * @private
 */
CanvasLayer.prototype.update_ = function() {
  this.requestAnimationFrameId_ = null;

  if (!this.isAdded_) {
    return;
  }

  if (this.isAnimated_) {
    this.scheduleUpdate();
  }

  if (this.needsResize_ && this.resizeHandler_) {
    this.needsResize_ = false;
    this.resizeHandler_();
  }

  if (this.updateHandler_) {
    this.updateHandler_();
  }
};

/**
 * A convenience method to get the current LatLng coordinate of the top left of
 * the current view of the map.
 * @return {google.maps.LatLng} The top left coordinate.
 */
CanvasLayer.prototype.getTopLeft = function() {
  return this.topLeft_;
};

/**
 * Schedule a requestAnimationFrame callback to updateHandler. If one is
 * already scheduled, there is no effect.
 */
CanvasLayer.prototype.scheduleUpdate = function() {
  if (this.isAdded_ && !this.requestAnimationFrameId_) {
    this.requestAnimationFrameId_ =
        this.requestAnimFrame_.call(window, this.requestUpdateFunction_);
  }
};

module.exports = CanvasLayer;

},{}],7:[function(require,module,exports){
/*
 ====================
 canvas setup for drawing tiles
 ====================
 */

function CanvasTileLayer(canvas_setup, render) {
  this.tileSize = new google.maps.Size(256, 256);
  this.maxZoom = 19;
  this.name = "Tile #s";
  this.alt = "Canvas tile layer";
  this.tiles = {};
  this.canvas_setup = canvas_setup;
  this.render = render;
  if (!render) {
      this.render = canvas_setup;
  }
}


// create a tile with a canvas element
CanvasTileLayer.prototype.create_tile_canvas = function (coord, zoom, ownerDocument) {

  // create canvas and reset style
  var canvas = ownerDocument.createElement('canvas');
  var hit_canvas = ownerDocument.createElement('canvas');
  canvas.style.border = hit_canvas.style.border = "none";
  canvas.style.margin = hit_canvas.style.margin = "0";
  canvas.style.padding = hit_canvas.style.padding = "0";

  // prepare canvas and context sizes
  var ctx = canvas.getContext('2d');
  ctx.width = canvas.width = this.tileSize.width;
  ctx.height = canvas.height = this.tileSize.height;

  var hit_ctx = hit_canvas.getContext('2d');
  hit_canvas.width = hit_ctx.width = this.tileSize.width;
  hit_canvas.height = hit_ctx.height = this.tileSize.height;

  //set unique id
  var tile_id = coord.x + '_' + coord.y + '_' + zoom;

  canvas.setAttribute('id', tile_id);
  hit_canvas.setAttribute('id', tile_id);

  if (tile_id in this.tiles)
      delete this.tiles[tile_id];

  this.tiles[tile_id] = {canvas:canvas, ctx:ctx, hit_canvas:hit_canvas, hit_ctx:hit_ctx, coord:coord, zoom:zoom, primitives:null};

  // custom setup
  //if (tile_id == '19295_24654_16'){
  if (this.canvas_setup)
      this.canvas_setup(this.tiles[tile_id], coord, zoom);
  //}
  return canvas;

}


CanvasTileLayer.prototype.each = function (callback) {
  for (var t in this.tiles) {
      var tile = this.tiles[t];
      callback(tile);
  }
}

CanvasTileLayer.prototype.recreate = function () {
  for (var t in this.tiles) {
      var tile = this.tiles[t];
      this.canvas_setup(tile, tile.coord, tile.zoom);
  }
};

CanvasTileLayer.prototype.redraw_tile = function (tile) {
  this.render(tile, tile.coord, tile.zoom);
};

CanvasTileLayer.prototype.redraw = function () {
  for (var t in this.tiles) {
      var tile = this.tiles[t];
      this.render(tile, tile.coord, tile.zoom);
  }
};

// could be called directly...
CanvasTileLayer.prototype.getTile = function (coord, zoom, ownerDocument) {
  return this.create_tile_canvas(coord, zoom, ownerDocument);
};

CanvasTileLayer.prototype.releaseTile = function (tile) {
  var id = tile.getAttribute('id');
  delete this.tiles[id];
};

module.exports = CanvasTileLayer;

},{}],8:[function(require,module,exports){
function GMapsTileLoader() {
}


GMapsTileLoader.prototype = {

  _initTileLoader: function(map, projection) {
    this._map = map;
    this._projection = projection;
    this._tiles = {};
    this._tilesLoading = {};
    this._tilesToLoad = 0;
    this._updateTiles = this._updateTiles.bind(this);
    this._listeners = [];
    this._listeners.push(
      google.maps.event.addListener(this._map, 'dragend', this._updateTiles),
      google.maps.event.addListener(this._map, 'zoom_changed', this._updateTiles)
    );
    this.tileSize = 256;
    this._updateTiles();
  },

  _removeTileLoader: function() {
    this._listeners.forEach(function (listener) {
      google.maps.event.removeListener(listener);
    });
    
    this._removeTiles();
  },

  _removeTiles: function () {
    for (var key in this._tiles) {
      this._removeTile(key);
    }
  },

  _reloadTiles: function() {
    this._removeTiles();
    this._updateTiles();
  },

  _updateTiles: function () {

      if (!this._map) { return; }

      var bounds = this._map.getBounds();
      var zoom = this._map.getZoom();
      var tileSize = this.tileSize;
      var mzoom = (1 << zoom);

      var topLeft = new google.maps.LatLng(
        bounds.getNorthEast().lat(),
        bounds.getSouthWest().lng()
      );

      var bottomRigth = new google.maps.LatLng(
        bounds.getSouthWest().lat(),
        bounds.getNorthEast().lng()
      );


      this._projection = this._map.getProjection();
      var divTopLeft = this._projection.fromLatLngToPoint(topLeft);
      var divBottomRight = this._projection.fromLatLngToPoint(bottomRigth);


      var nwTilePoint = new google.maps.Point(
              Math.floor(divTopLeft.x*mzoom / tileSize),
              Math.floor(divTopLeft.y*mzoom / tileSize)),
          seTilePoint = new google.maps.Point(
              Math.floor(divBottomRight.x*mzoom / tileSize),
              Math.floor(divBottomRight.y*mzoom / tileSize));


      this._addTilesFromCenterOut(nwTilePoint, seTilePoint);
      this._removeOtherTiles(nwTilePoint, seTilePoint);
  },

  _removeOtherTiles: function (nwTilePoint, seTilePoint) {
      var kArr, x, y, key;

      var zoom = this._map.getZoom();
      for (key in this._tiles) {
          if (this._tiles.hasOwnProperty(key)) {
              kArr = key.split(':');
              x = parseInt(kArr[0], 10);
              y = parseInt(kArr[1], 10);
              z = parseInt(kArr[2], 10);

              // remove tile if it's out of bounds
              if (z !== zoom || x < nwTilePoint.x || x > seTilePoint.x || y < nwTilePoint.y || y > seTilePoint.y) {
                  this._removeTile(key);
              }
          }
      }
  },

  _removeTile: function (key) {
      this.onTileRemoved && this.onTileRemoved(this._tiles[key]); 
      delete this._tiles[key];
      delete this._tilesLoading[key];
  },

  _tileKey: function(tilePoint) {
    return tilePoint.x + ':' + tilePoint.y + ':' + tilePoint.zoom;
  },

  _tileShouldBeLoaded: function (tilePoint) {
      var k = this._tileKey(tilePoint);
      return !(k in this._tiles) && !(k in this._tilesLoading);
  },

  _tileLoaded: function(tilePoint, tileData) {
    this._tilesToLoad--;
    var k = tilePoint.x + ':' + tilePoint.y + ':' + tilePoint.zoom
    this._tiles[k] = tileData;
    delete this._tilesLoading[k];
    if(this._tilesToLoad === 0) {
      this.onTilesLoaded && this.onTilesLoaded();
    }
  },

  getTilePos: function (tilePoint) {
    var limit = (1 << this._map.getZoom());
    // wrap tile
    tilePoint = {
      x: ((tilePoint.x % limit) + limit) % limit,
      y: tilePoint.y
    };

    tilePoint = new google.maps.Point(
      tilePoint.x * this.tileSize, 
      tilePoint.y * this.tileSize
    );

    var bounds = this._map.getBounds();
    var topLeft = new google.maps.LatLng(
      bounds.getNorthEast().lat(),
      bounds.getSouthWest().lng()
    );

    var divTopLeft = this._map.getProjection().fromLatLngToPoint(topLeft);
    zoom = (1 << this._map.getZoom());
    divTopLeft.x = divTopLeft.x * zoom;
    divTopLeft.y = divTopLeft.y * zoom;

    return new google.maps.Point(
      tilePoint.x - divTopLeft.x,
      tilePoint.y - divTopLeft.y
    );
  },

  _addTilesFromCenterOut: function (nwTilePoint, seTilePoint) {
      var queue = [],
          center = new google.maps.Point(
            (nwTilePoint.x + seTilePoint.x) * 0.5,
            (nwTilePoint.y + seTilePoint.y) * 0.5
          ),
          zoom = this._map.getZoom();

      var j, i, point;

      for (j = nwTilePoint.y; j <= seTilePoint.y; j++) {
          for (i = nwTilePoint.x; i <= seTilePoint.x; i++) {
              point = new google.maps.Point (i, j);
              point.zoom = zoom;

              if (this._tileShouldBeLoaded(point)) {
                  queue.push(point);
              }
          }
      }

      var tilesToLoad = queue.length;

      if (tilesToLoad === 0) { return; }

      function distanceToCenterSq(point) {
        var dx = point.x - center.x;
        var dy = point.y - center.y;
        return dx * dx + dy * dy;
      }

      // load tiles in order of their distance to center
      queue.sort(function (a, b) {
          return distanceToCenterSq(a) - distanceToCenterSq(b);
      });

      this._tilesToLoad += tilesToLoad;

        for (i = 0; i < tilesToLoad; i++) {
          var t = queue[i];
          var k = this._tileKey(t);
          this._tilesLoading[k] = t;
          // events
          if (this.onTileAdded) {
            this.onTileAdded(t);
          }
        }

      this.onTilesLoading && this.onTilesLoading();
  }

}

module.exports = GMapsTileLoader;

},{}],9:[function(require,module,exports){
var gmaps = {};
if (typeof google !== 'undefined' && typeof google.maps !== 'undefined') {
    gmaps = require('./torque');
    gmaps.GMapsTileLoader = require('./gmaps_tileloader_mixin');
}
module.exports = gmaps;

},{"./gmaps_tileloader_mixin":8,"./torque":10}],10:[function(require,module,exports){
(function (global){
var carto = global.carto || require('carto');
var torque = require('../');
var CanvasLayer = require('./CanvasLayer');
var CanvasTileLayer = require('./canvas_tile_layer');
var GMapsTileLoader = require('./gmaps_tileloader_mixin');

function GMapsTorqueLayer(options) {
  var self = this;
  if (!torque.isBrowserSupported()) {
    throw new Error("browser is not supported by torque");
  }
  this.keys = [0];
  Object.defineProperty(this, 'key', {
    get: function() {
      return this.getKey();
    }
  });
  this.shader = null;
  this.ready = false;
  this.options = torque.extend({}, options);
  this.options = torque.extend({
    provider: 'windshaft',
    renderer: 'point',
    resolution: 2,
    steps: 100,
    visible: true
  }, this.options);
  if (options.cartocss) {
    torque.extend(this.options,
        torque.common.TorqueLayer.optionsFromCartoCSS(options.cartocss));
  }

  if(options.tileJSON) this.options.provider = "tileJSON";

  this.hidden = !this.options.visible;

  this.animator = new torque.Animator(function(time) {
    var k = time | 0;
    if(self.getKey() !== k) {
      self.setKey(k);
    }
  }, torque.extend(torque.clone(this.options), {
    onPause: function() {
      self.fire('pause');
    },
    onStop: function() {
      self.fire('stop');
    },
    onStart: function() {
      self.fire('play');
    },
    onStepsRange: function() {
      self.fire('change:stepsRange', self.animator.stepsRange());
    }
  }));

  this.play = this.animator.start.bind(this.animator);
  this.stop = this.animator.stop.bind(this.animator);
  this.pause = this.animator.pause.bind(this.animator);
  this.toggle = this.animator.toggle.bind(this.animator);
  this.setDuration = this.animator.duration.bind(this.animator);
  this.isRunning = this.animator.isRunning.bind(this.animator);


  CanvasLayer.call(this, {
    animate: false,
    updateHandler: this.render,
    readyHandler: this.initialize
  });

}

/**
 * torque layer
 */
GMapsTorqueLayer.prototype = torque.extend({},
  CanvasLayer.prototype,
  GMapsTileLoader.prototype,
  torque.Event,
  {

  providers: {
    'sql_api': torque.providers.json,
    'url_template': torque.providers.JsonArray,
    'windshaft': torque.providers.windshaft,
    'tileJSON': torque.providers.tileJSON
  },

  renderers: {
    'point': torque.renderer.Point,
    'pixel': torque.renderer.Rectangle
  },

  initialize: function() {
    var self = this;

    this.onTileAdded = this.onTileAdded.bind(this);

    this.options.ready = function() {
      self.fire("change:bounds", {
        bounds: self.provider.getBounds()
      });
      self.animator.steps(self.provider.getSteps());
      self.animator.rescale();
      self.fire('change:steps', {
        steps: self.provider.getSteps()
      });
      self.setKeys(self.getKeys());
    };

    this.provider = new this.providers[this.options.provider](this.options);
    this.renderer = new this.renderers[this.options.renderer](this.getCanvas(), this.options);
    this.renderer.options.errorCallback = this.options.errorCallback;

    // this listener should be before tile loader
    this._cacheListener = google.maps.event.addListener(this.map, 'zoom_changed', function() {
      self.renderer && self.renderer.clearSpriteCache();
    });

    this._initTileLoader(this.map, this.getProjection());

    if (this.shader) {
      this.renderer.setShader(this.shader);
    }

  },

  hide: function() {
    if(this.hidden) return this;
    this.pause();
    this.clear();
    this.hidden = true;
    return this;
  },

  show: function() {
    if(!this.hidden) return this;
    this.hidden = false;
    this.play();
    if (this.options.steps === 1){
      this.redraw();
    }
    return this;
  },

  setSQL: function(sql) {
    if (this.provider.options.named_map) throw new Error("SQL queries on named maps are read-only");
    if (!this.provider || !this.provider.setSQL) {
      throw new Error("this provider does not support SQL");
    }
    this.provider.setSQL(sql);
    this._reloadTiles();
    return this;
  },

  setBlendMode: function(_) {
    this.renderer && this.renderer.setBlendMode(_);
    this.redraw();
  },

  setSteps: function(steps) {
    this.provider && this.provider.setSteps(steps);
    this.animator && this.animator.steps(steps);
    this._reloadTiles();
  },

  setColumn: function(column, isTime) {
    this.provider && this.provider.setColumn(column, isTime);
    this._reloadTiles();
  },

  getTimeBounds: function() {
    return this.provider && this.provider.getKeySpan();
  },

  getCanvas: function() {
    return this.canvas;
  },

    // for each tile shown on the map request the data
  onTileAdded: function(t) {
    var self = this;
    this.provider.getTileData(t, t.zoom, function(tileData) {
      // don't load tiles that are not being shown
      if (t.zoom !== self.map.getZoom()) return;
      self._tileLoaded(t, tileData);
      self.fire('tileLoaded');
      if (tileData) {
        self.redraw();
      }
    });
  },

  clear: function() {
    var canvas = this.canvas;
    canvas.width = canvas.width;
  },

  /**
   * render the selectef key
   * don't call this function directly, it's called by
   * requestAnimationFrame. Use redraw to refresh it
   */
  render: function() {
    if(this.hidden) return;
    var t, tile, pos;
    var canvas = this.canvas;
    this.renderer.clearCanvas();
    var ctx = canvas.getContext('2d');

    // renders only a "frame"
    for(t in this._tiles) {
      tile = this._tiles[t];
      if (tile) {
        pos = this.getTilePos(tile.coord);
        ctx.setTransform(1, 0, 0, 1, pos.x, pos.y);
        this.renderer.renderTile(tile, this.keys);
      }
    }
    this.renderer.applyFilters();
  },

  getActivePointsBBox: function(step) {
    var positions = [];
    var tileMax = this.options.resolution * (256/this.options.resolution - 1);
    for(var t in this._tiles) {
      var tile = this._tiles[t];
      positions = positions.concat(this.renderer.getActivePointsBBox(tile, step));
    }
    return positions;
  },

  /**
   * set key to be shown. If it's a single value
   * it renders directly, if it's an array it renders
   * accumulated
   */
  setKey: function(key) {
    this.setKeys([key]);
  },

  /**
   * returns the array of keys being rendered
   */
  getKeys: function() {
    return this.keys;
  },

  setKeys: function(keys) {
    this.keys = keys;
    this.animator.step(this.getKey());
    this.redraw();
    this.fire('change:time', { time: this.getTime(), step: this.getKey() });
  },

  getKey: function() {
    return this.keys[0];
  },

  /**
   * helper function, does the same than ``setKey`` but only
   * accepts scalars.
   */
  setStep: function(time) {
    if(time === undefined || time.length !== undefined) {
      throw new Error("setTime only accept scalars");
    }
    this.setKey(time);
  },

  renderRange: function(start, end) {
    this.pause();
    var keys = [];
    for (var i = start; i <= end; i++) {
      keys.push(i);
    }
    this.setKeys(keys);
  },

  resetRenderRange: function() {
    this.stop();
    this.play();
  },

  /**
   * transform from animation step to Date object
   * that contains the animation time
   *
   * ``step`` should be between 0 and ``steps - 1``
   */
  stepToTime: function(step) {
    if (!this.provider) return 0;
    var times = this.provider.getKeySpan();
    var time = times.start + (times.end - times.start)*(step/this.provider.getSteps());
    return new Date(time);
  },

  timeToStep: function(timestamp) {
    if (typeof timestamp === "Date") timestamp = timestamp.getTime();
    if (!this.provider) return 0;
    var times = this.provider.getKeySpan();
    var step = (this.provider.getSteps() * (timestamp - times.start)) / (times.end - times.start);
    return step;
  },

  getStep: function() {
    return this.getKey();
  },

  /**
   * returns the animation time defined by the data
   * in the defined column. Date object
   */
  getTime: function() {
    return this.stepToTime(this.getKey());
  },

  /**
   * set the cartocss for the current renderer
   */
  setCartoCSS: function(cartocss) {
    if (!this.renderer) throw new Error('renderer is not valid');

    if (this.provider && this.provider.options.named_map) {
      console.log('Torque layer: CartoCSS style on named maps is read-only');
      return false;
    }
    
    var shader = new carto.RendererJS().render(cartocss);
    this.shader = shader;
    if (this.renderer) {
      this.renderer.setShader(shader);
    }

    // provider options
    var options = torque.common.TorqueLayer.optionsFromLayer(shader.findLayer({ name: 'Map' }));
    this.provider && this.provider.setCartoCSS && this.provider.setCartoCSS(cartocss);
    if(this.provider && this.provider.setOptions(options)) {
      this._reloadTiles();
    }
    torque.extend(this.options, options);

    // animator options
    if (options.animationDuration) {
      this.animator.duration(options.animationDuration);
    }

    this.redraw();
    return this;
  },

  redraw: function() {
    this.scheduleUpdate();
  },

  onRemove: function() {
    this.fire('remove');
    CanvasLayer.prototype.onRemove.call(this);
    this.animator.stop();
    this._removeTileLoader();
    google.maps.event.removeListener(this._cacheListener);
  },

  /**
   * return an array with the values for all the pixels active for the step
   */
  getValues: function(step) {
    var values = [];
    step = step === undefined ? this.getKey(): step;
    var t, tile;
    for(t in this._tiles) {
      tile = this._tiles[t];
      this.renderer.getValues(tile, step, values);
    }
    return values;
  },

  getValueForPos: function(x, y, step) {
    step = step === undefined ? this.getKey(): step;
    var t, tile, pos, value = null, xx, yy;
    for(t in this._tiles) {
      tile = this._tiles[t];
      pos = this.getTilePos(tile.coord);
      xx = x - pos.x;
      yy = y - pos.y;
      if (xx >= 0 && yy >= 0 && xx < this.renderer.TILE_SIZE && yy <= this.renderer.TILE_SIZE) {
        value = this.renderer.getValueFor(tile, step, xx, yy);
      }
      if (value !== null) {
        return value;
      }
    }
    return null;
  },

  /** return the number of points for a step */
  pointCount: function(step) {
    var t, tile;
    step = step === undefined ? this.key: step;
    var c = 0;
    for(t in this._tiles) {
      tile = this._tiles[t];
      if (tile) {
        c += tile.timeCount[step];
      }
    }
    return c;
  },
  
  getValueForBBox: function(x, y, w, h) {
    var xf = x + w, yf = y + h;
    var sum = 0;
    for(_y = y; y<yf; y+=this.options.resolution){
      for(_x = x; x<xf; x+=this.options.resolution){
        var thisValue = this.getValueForPos(_x,_y);
        if (thisValue){
          var bb = thisValue.bbox;
          var proj = this.getProjection()
          var xy = proj.fromLatLngToContainerPixel(new google.maps.LatLng(bb[1].lat, bb[1].lon));
          if(xy.x < xf && xy.y < yf){
            sum += thisValue.value;
          }
        }
      }
    }
    return sum;
  },

  error: function (callback) {
    this.options.errorCallback = callback;
    return this;
  }

});



function GMapsTiledTorqueLayer(options) {
  this.options = torque.extend({}, options);
  CanvasTileLayer.call(this, this._loadTile.bind(this), this.drawTile.bind(this));
  this.initialize(options);
}

GMapsTiledTorqueLayer.prototype = torque.extend({}, CanvasTileLayer.prototype, {

  providers: {
    'sql_api': torque.providers.json,
    'url_template': torque.providers.JsonArray
  },

  renderers: {
    'point': torque.renderer.Point,
    'pixel': torque.renderer.Rectangle
  },

  initialize: function(options) {
    var self = this;
    this.keys = [0];

    this.options.renderer = this.options.renderer || 'pixel';
    this.options.provider = this.options.provider || 'sql_api';

    this.provider = new this.providers[this.options.provider](options);
    this.renderer = new this.renderers[this.options.renderer](null, options);

  },

  _tileLoaded: function(tile, tileData) {
    tile.data = tileData;
    this.drawTile(tile);
  },

  _loadTile: function(tile, coord, zoom) {
    var self = this;
    var limit = 1 << zoom;
    // wrap tile
    var wrappedCoord = {
      x: ((coord.x % limit) + limit) % limit,
      y: coord.y
    };

    this.provider.getTileData(wrappedCoord, zoom, function(tileData) {
      self._tileLoaded(tile, tileData);
    });
  },

  drawTile: function (tile) {
    var canvas = tile.canvas;
    if(!tile.data) return;
    canvas.width = canvas.width;

    this.renderer.setCanvas(canvas);

    var accum = this.renderer.accumulate(tile.data, this.getKey());
    this.renderer.renderTileAccum(accum, 0, 0);
  },

  setKey: function(key) {
    this.keys = [key];
    this.redraw();
  },

  /**
   * set the cartocss for the current renderer
   */
  setCartoCSS: function(cartocss) {
    if (!this.renderer) throw new Error('renderer is not valid');
    return this.renderer.setCartoCSS(cartocss);
  },

  setStepsRange: function(start, end) {
    this.animator.stepsRange(start, end);
  },

  removeStepsRange: function() {
    this.animator.removeCustomStepsRange();
  },

  getStepsRange: function() {
    return this.animator.stepsRange();
  }

});

module.exports = {
    GMapsTiledTorqueLayer: GMapsTiledTorqueLayer,
    GMapsTorqueLayer: GMapsTorqueLayer
};

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"../":11,"./CanvasLayer":6,"./canvas_tile_layer":7,"./gmaps_tileloader_mixin":8,"carto":undefined}],11:[function(require,module,exports){
module.exports = require('./core');

module.exports.Animator = require('./animator');
module.exports.cartocss_reference = require('./cartocss_reference');
module.exports.common = require('./common');
module.exports.math = require('./math');
module.exports.Mercator = require('./mercator');
module.exports.net = require('./request');
module.exports.renderer = require('./renderer');
module.exports.providers = require('./provider');

require('./leaflet');

var gmaps = require('./gmaps');
module.exports.GMapsTileLoader = gmaps.GMapsTileLoader;
module.exports.GMapsTorqueLayer = gmaps.GMapsTorqueLayer;
module.exports.GMapsTiledTorqueLayer = gmaps.GMapsTiledTorqueLayer;

require('./ol');
},{"./animator":2,"./cartocss_reference":3,"./common":4,"./core":5,"./gmaps":9,"./leaflet":13,"./math":16,"./mercator":17,"./ol":19,"./provider":23,"./renderer":30,"./request":34}],12:[function(require,module,exports){
require('./leaflet_tileloader_mixin');

/**
 * full canvas layer implementation for Leaflet
 */

L.CanvasLayer = L.Layer.extend({

  includes: [L.Mixin.Events, L.Mixin.TileLoader],

  options: {
      minZoom: 0,
      maxZoom: 28,
      tileSize: 256,
      subdomains: 'abc',
      errorTileUrl: '',
      attribution: '',
      zoomOffset: 0,
      opacity: 1,
      unloadInvisibleTiles: L.Browser.mobile,
      updateWhenIdle: L.Browser.mobile,
      tileLoader: false, // installs tile loading events
      zoomAnimation: true
  },

  initialize: function (options) {
    var self = this;
    options = options || {};
    //this.project = this._project.bind(this);
    this.render = this.render.bind(this);
    L.Util.setOptions(this, options);
    this._canvas = this._createCanvas();
    // backCanvas for zoom animation
    if (this.options.zoomAnimation) {
      this._backCanvas = this._createCanvas();
    }
    this._ctx = this._canvas.getContext('2d');
    this.currentAnimationFrame = -1;
    this.requestAnimationFrame = window.requestAnimationFrame || window.mozRequestAnimationFrame ||
                                window.webkitRequestAnimationFrame || window.msRequestAnimationFrame || function(callback) {
                                    return window.setTimeout(callback, 1000 / 60);
                                };
    this.cancelAnimationFrame = window.cancelAnimationFrame || window.mozCancelAnimationFrame ||
                                window.webkitCancelAnimationFrame || window.msCancelAnimationFrame || function(id) { clearTimeout(id); };
  },

  _createCanvas: function() {
    var canvas;
    canvas = document.createElement('canvas');
    canvas.style.position = 'absolute';
    canvas.style.top = 0;
    canvas.style.left = 0;
    canvas.style.pointerEvents = "none";
    canvas.style.zIndex = this.options.zIndex || 0;
    var className = 'leaflet-tile-container';
    if (this.options.zoomAnimation) {
      className += ' leaflet-zoom-animated';
    }
    canvas.setAttribute('class', className);
    return canvas;
  },

  onAdd: function (map) {
    this._map = map;

    // add container with the canvas to the tile pane
    // the container is moved in the oposite direction of the
    // map pane to keep the canvas always in (0, 0)
    var tilePane = this._map._panes.tilePane;
    var _container = L.DomUtil.create('div', 'leaflet-layer');
    _container.appendChild(this._canvas);
    if (this.options.zoomAnimation) {
      _container.appendChild(this._backCanvas);
      this._backCanvas.style.display = 'none';
    }
    tilePane.appendChild(_container);

    this._container = _container;

    // hack: listen to predrag event launched by dragging to
    // set container in position (0, 0) in screen coordinates
    map.dragging._draggable.on('predrag', function() {
      var d = map.dragging._draggable;
      L.DomUtil.setPosition(this._canvas, { x: -d._newPos.x, y: -d._newPos.y });
    }, this);

    map.on({ 'viewreset': this._reset }, this);
    map.on('move', this.redraw, this);
    map.on('resize', this._reset, this);

    if (this.options.zoomAnimation) {
      map.on({
        'zoomanim': this._animateZoom,
        'zoomend': this._endZoomAnim,
        'moveend': this._reset
      }, this);
    }

    if(this.options.tileLoader) {
      this._initTileLoader();
    }

    this._reset();
  },

  _animateZoom: function (e) {
    if (!this._animating) {
        this._animating = true;
    }
    var back = this._backCanvas;

    back.width = this._canvas.width;
    back.height = this._canvas.height;

    // paint current canvas in back canvas with trasnformation
    var pos = this._canvas._leaflet_pos || { x: 0, y: 0 };
    back.getContext('2d').drawImage(this._canvas, 0, 0);

    L.DomUtil.setPosition(back, L.DomUtil.getPosition(this._canvas));

    // hide original
    this._canvas.style.display = 'none';
    back.style.display = 'block';
    var map = this._map;
    var scale = map.getZoomScale(e.zoom);
    var newCenter = map._latLngToNewLayerPoint(map.getCenter(), e.zoom, e.center);
    var oldCenter = map._latLngToNewLayerPoint(e.center, e.zoom, e.center);

    var origin = {
      x:  newCenter.x - oldCenter.x + pos.x,
      y:  newCenter.y - oldCenter.y + pos.y
    };

    var bg = back;
    var transform = L.DomUtil.TRANSFORM;
    setTimeout(function() {
      bg.style[transform] = 'translate(' + origin.x + 'px, ' + origin.y + 'px) scale(' + e.scale + ') ';
    }, 0)
  },

  _endZoomAnim: function () {
    this._animating = false;
    this._canvas.style.display = 'block';
    this._backCanvas.style.display = 'none';
    this._backCanvas.style[L.DomUtil.TRANSFORM] = '';
  },

  getCanvas: function() {
    return this._canvas;
  },

  getAttribution: function() {
    return this.options.attribution;
  },

  draw: function() {
    return this._reset();
  },

  onRemove: function (map) {
    this._container.parentNode.removeChild(this._container);
    map.off({
      'viewreset': this._reset,
      'move': this.redraw,
      'moveend': this._reset,
      'resize': this._reset,
      'zoomanim': this._animateZoom,
      'zoomend': this._endZoomAnim
    }, this);
  },

  addTo: function (map) {
    map.addLayer(this);
    return this;
  },

  error: function (callback) {
    this.provider.options.errorCallback = callback;
    return this;
  },

  setOpacity: function (opacity) {
    this.options.opacity = opacity;
    this._updateOpacity();
    return this;
  },

  setZIndex: function(zIndex) {
    zIndex = zIndex !== void 0 ? zIndex : 1;
    this._container.style.zIndex = zIndex;
    this._canvas.style.zIndex = zIndex;
    if (this.options.zoomAnimation) {
      this._backCanvas.style.zIndex = zIndex;
    }
  },

  bringToFront: function () {
    return this;
  },

  bringToBack: function () {
    return this;
  },

  _reset: function () {
    var size = this._map.getSize();
    this._canvas.width = size.x;
    this._canvas.height = size.y;

    // fix position
    var pos = L.DomUtil.getPosition(this._map.getPanes().mapPane);
    if (pos) {
      L.DomUtil.setPosition(this._canvas, { x: -pos.x, y: -pos.y });
    }
    this.onResize();
    this._render();
  },

  /*
  _project: function(x) {
    var point = this._map.latLngToLayerPoint(new L.LatLng(x[1], x[0]));
    return [point.x, point.y];
  },
  */

  _updateOpacity: function () { },

  _render: function() {
    if (this.currentAnimationFrame >= 0) {
      this.cancelAnimationFrame.call(window, this.currentAnimationFrame);
    }
    this.currentAnimationFrame = this.requestAnimationFrame.call(window, this.render);
  },

  // use direct: true if you are inside an animation frame call
  redraw: function(direct) {
    var domPosition = L.DomUtil.getPosition(this._map.getPanes().mapPane);
    if (domPosition) {
      L.DomUtil.setPosition(this._canvas, { x: -domPosition.x, y: -domPosition.y });
    }
    if (direct) {
      this.render();
    } else {
      this._render();
    }
  },

  onResize: function() {
  },

  render: function() {
    throw new Error('render function should be implemented');
  }

});

},{"./leaflet_tileloader_mixin":14}],13:[function(require,module,exports){
if (typeof L !== 'undefined') {
    require('./torque');
}

},{"./torque":15}],14:[function(require,module,exports){
L.Mixin.TileLoader = {

  _initTileLoader: function() {
    this._tilesLoading = {};
    this._tilesToLoad = 0;
    this._map.on({
        'moveend': this._updateTiles
    }, this);
    this._updateTiles();
  },

  _removeTileLoader: function() {
    this._map.off({
        'moveend': this._updateTiles
    }, this);
    this._removeTiles();
  },

  _updateTiles: function () {

      if (!this._map) { return; }

      var bounds = this._map.getPixelBounds(),
          zoom = this._map.getZoom(),
          tileSize = this.options.tileSize;

      if (zoom > this.options.maxZoom || zoom < this.options.minZoom) {
          return;
      }

      var nwTilePoint = new L.Point(
              Math.floor(bounds.min.x / tileSize),
              Math.floor(bounds.min.y / tileSize)),

          seTilePoint = new L.Point(
              Math.floor(bounds.max.x / tileSize),
              Math.floor(bounds.max.y / tileSize)),

          tileBounds = new L.Bounds(nwTilePoint, seTilePoint);

      this._addTilesFromCenterOut(tileBounds);
      this._removeOtherTiles(tileBounds);
  },

  _removeTiles: function (bounds) {
      for (var key in this._tiles) {
        this._removeTile(key);
      }
  },

  _reloadTiles: function() {
    this._removeTiles();
    this._updateTiles();
  },

  _removeOtherTiles: function (bounds) {
      var kArr, x, y, z, key;
      var zoom = this._map.getZoom();

      for (key in this._tiles) {
          if (this._tiles.hasOwnProperty(key)) {
              kArr = key.split(':');
              x = parseInt(kArr[0], 10);
              y = parseInt(kArr[1], 10);
              z = parseInt(kArr[2], 10);

              // remove tile if it's out of bounds
              if (zoom !== z || x < bounds.min.x || x > bounds.max.x || y < bounds.min.y || y > bounds.max.y) {
                  this._removeTile(key);
              }
          }
      }
  },

  _removeTile: function (key) {
      this.fire('tileRemoved', this._tiles[key]);
      delete this._tiles[key];
      delete this._tilesLoading[key];
  },

  _tileKey: function(tilePoint) {
    return tilePoint.x + ':' + tilePoint.y + ':' + tilePoint.zoom;
  },

  _tileShouldBeLoaded: function (tilePoint) {
      var k = this._tileKey(tilePoint);
      return !(k in this._tiles) && !(k in this._tilesLoading);
  },

  _tileLoaded: function(tilePoint, tileData) {
    this._tilesToLoad--;
    var k = tilePoint.x + ':' + tilePoint.y + ':' + tilePoint.zoom
    this._tiles[k] = tileData;
    delete this._tilesLoading[k];
    if(this._tilesToLoad === 0) {
      this.fire("tilesLoaded");
    }
  },

  getTilePos: function (tilePoint) {
    tilePoint = new L.Point(tilePoint.x, tilePoint.y);
    var origin = this._map._getTopLeftPoint(this._map.getCenter()),
        tileSize = this.options.tileSize;

    return tilePoint.multiplyBy(tileSize).subtract(origin);
  },

  _addTilesFromCenterOut: function (bounds) {
      var queue = [],
          center = bounds.getCenter(),
          zoom = this._map.getZoom();

      var j, i, point;

      for (j = bounds.min.y; j <= bounds.max.y; j++) {
          for (i = bounds.min.x; i <= bounds.max.x; i++) {
              point = new L.Point(i, j);
              point.zoom =  zoom;

              if (this._tileShouldBeLoaded(point)) {
                  queue.push(point);
              }
          }
      }

      var tilesToLoad = queue.length;

      if (tilesToLoad === 0) { return; }

      // load tiles in order of their distance to center
      queue.sort(function (a, b) {
          return a.distanceTo(center) - b.distanceTo(center);
      });

      this._tilesToLoad += tilesToLoad;

      for (i = 0; i < tilesToLoad; i++) {
        var t = queue[i];
        var k = this._tileKey(t);
        this._tilesLoading[k] = t;
        this.fire('tileAdded', t);
      }
      this.fire("tilesLoading");

  }

}

},{}],15:[function(require,module,exports){
(function (global){
var carto = global.carto || require('carto');
var torque = require('../');

require('./canvas_layer');

/**
 * torque layer
 */
L.TorqueLayer = L.CanvasLayer.extend({

  providers: {
    'sql_api': torque.providers.json,
    'url_template': torque.providers.JsonArray,
    'windshaft': torque.providers.windshaft,
    'tileJSON': torque.providers.tileJSON
  },

  renderers: {
    'point': torque.renderer.Point,
    'pixel': torque.renderer.Rectangle
  },

  initialize: function(options) {
    var self = this;
    if (!torque.isBrowserSupported()) {
      throw new Error("browser is not supported by torque");
    }
    options.tileLoader = true;
    this.keys = [0];
    this._tiles = {};
    Object.defineProperty(this, 'key', {
      get: function() {
        return this.getKey();
      }
    });
    this.prevRenderedKey = 0;
    if (options.cartocss) {
      // We're only passing the Map header to the global options because the parser won't like turbocarto expressions
      var headerCartoCSS = options.cartocss.replace(/\n/g,'').match(/Map\s*?\{.*?}/g)[0];
      torque.extend(options, torque.common.TorqueLayer.optionsFromCartoCSS(headerCartoCSS));
    }

    options.resolution = options.resolution || 2;
    options.steps = options.steps || 100;
    options.visible = options.visible === undefined ? true: options.visible;
    this.hidden = !options.visible;

    this.animator = new torque.Animator(function(time) {
      var k = time | 0;
      if(self.getKey() !== k) {
        self.setKey(k, { direct: true });
      }
    }, torque.extend(torque.clone(options), {
      onPause: function() {
        self.fire('pause');
      },
      onStop: function() {
        self.fire('stop');
      },
      onStart: function() {
        self.fire('play');
      },
      onStepsRange: function() {
        self.fire('change:stepsRange', self.animator.stepsRange());
      }
    }));

    this.play = this.animator.start.bind(this.animator);
    this.stop = this.animator.stop.bind(this.animator);
    this.pause = this.animator.pause.bind(this.animator);
    this.toggle = this.animator.toggle.bind(this.animator);
    this.setDuration = this.animator.duration.bind(this.animator);
    this.isRunning = this.animator.isRunning.bind(this.animator);


    L.CanvasLayer.prototype.initialize.call(this, options);

    this.options.renderer = this.options.renderer || 'point';
    this.options.provider = this.options.provider || 'windshaft';

    if (this.options.tileJSON) this.options.provider = 'tileJSON';

    this.provider = new this.providers[this.options.provider](options);
    options.layer = this;
    this.renderer = new this.renderers[this.options.renderer](this.getCanvas(), options);


    options.ready = function() {
      self.fire("change:bounds", {
        bounds: self.provider.getBounds()
      });
      self.animator.steps(self.provider.getSteps());
      self.animator.rescale();
      self.fire('change:steps', {
        steps: self.provider.getSteps()
      });
      self.setKeys(self.getKeys());
    };

    this.on('tileLoaded', function () {
      self.renderer.setCartoCSS(self.renderer.style);
    })

    this.renderer.on("allIconsLoaded", this.render.bind(this));


    // for each tile shown on the map request the data
    this.on('tileAdded', function(t) {
      var tileData = this.provider.getTileData(t, t.zoom, function(tileData) {
        // don't load tiles that are not being shown
        if (t.zoom !== self._map.getZoom()) return;
        self._tileLoaded(t, tileData);
        self._clearTileCaches();
        if (tileData) {
          self.redraw();
        }
        self.fire('tileLoaded');
      });
    }, this);

  },

  _clearTileCaches: function() {
    var t, tile;
    for(t in this._tiles) {
      tile = this._tiles[t];
      if (tile && tile._tileCache) {
        tile._tileCache = null;
      }
    }
  },

  _clearCaches: function() {
    this.renderer && this.renderer.clearSpriteCache();
    this._clearTileCaches();
  },

  onAdd: function (map) {
    map.on({
      'zoomend': this._clearCaches,
      'zoomstart': this._pauseOnZoom
    }, this);

    map.on({
      'zoomend': this._resumeOnZoom
    }, this);
    L.CanvasLayer.prototype.onAdd.call(this, map);
  },

  onRemove: function(map) {
    this.fire('remove');
    this._removeTileLoader();
    map.off({
      'zoomend': this._clearCaches,
      'zoomstart': this._pauseOnZoom
    }, this);
    map.off({
      'zoomend': this._resumeOnZoom
    }, this);
    L.CanvasLayer.prototype.onRemove.call(this, map);
  },

  _pauseOnZoom: function() {
    this.wasRunning = this.isRunning();
    if (this.wasRunning) {
      this.pause();
    }
  },

  _resumeOnZoom: function() {
    if (this.wasRunning) {
      this.play();
    }
  },

  hide: function() {
    if(this.hidden) return this;
    this.pause();
    this.clear();
    this.hidden = true;
    return this;
  },

  show: function() {
    if(!this.hidden) return this;
    this.hidden = false;
    this.play();
    if (this.options.steps === 1){
      this.redraw();
    }
    return this;
  },

  setSQL: function(sql) {
    if (this.provider.options.named_map) throw new Error("SQL queries on named maps are read-only");
    if (!this.provider || !this.provider.setSQL) {
      throw new Error("this provider does not support SQL");
    }
    this.provider.setSQL(sql);
    this._reloadTiles();
    return this;
  },

  setBlendMode: function(_) {
    this.renderer.setBlendMode(_);
    this.redraw();
  },

  setSteps: function(steps) {
    this.provider.setSteps(steps);
    this._reloadTiles();
  },

  setColumn: function(column, isTime) {
    this.provider.setColumn(column, isTime);
    this._reloadTiles();
  },

  getTimeBounds: function() {
    return this.provider && this.provider.getKeySpan();
  },

  clear: function() {
    var canvas = this.getCanvas();
    canvas.width = canvas.width;
  },

  /**
   * render the selectef key
   * don't call this function directly, it's called by
   * requestAnimationFrame. Use redraw to refresh it
   */
  render: function() {
    if(this.hidden) return;
    var t, tile, pos;
    var canvas = this.getCanvas();
    this.renderer.clearCanvas();
    var ctx = canvas.getContext('2d');

    for(t in this._tiles) {
      tile = this._tiles[t];
      if (tile) {
        // clear cache
        if (this.animator.isRunning()) {
          tile._tileCache = null;
        }

        pos = this.getTilePos(tile.coord);
        ctx.setTransform(1, 0, 0, 1, pos.x, pos.y);

        if (tile._tileCache) {
          // when the tile has a cached image just render it and avoid to render
          // all the points
          this.renderer._ctx.drawImage(tile._tileCache, 0, 0);
        } else {
          this.renderer.renderTile(tile, this.keys);
        }
      }
    }
    this.renderer.applyFilters();

    // prepare caches if the animation is not running
    // don't cache if the key has just changed, this avoids to cache
    // when the user is dragging, it only cache when the map is still
    if (!this.animator.isRunning() && this.getKey() === this.prevRenderedKey) {
      var tile_size = this.renderer.TILE_SIZE;
      for(t in this._tiles) {
        tile = this._tiles[t];
        if (tile && !tile._tileCache) {
          var c = tile._tileCache = document.createElement('canvas');
          c.width = c.height = tile_size;
          pos = this.getTilePos(tile.coord);
          // clip bounds, firefox raise an exception when try to get data from outside canvas
          var x = Math.max(0, pos.x)
          var y = Math.max(0, pos.y)
          var w = Math.min(tile_size, this.getCanvas().width - x);
          var h = Math.min(tile_size, this.getCanvas().height - y);
          if (w > 0 && h > 0) {
            c.getContext('2d').drawImage(this.getCanvas(), x, y, w, h, x - pos.x, y - pos.y, w, h);
          }
        }
      }
    }

    this.prevRenderedKey = this.getKey();

  },

  /**
   * set key to be shown. If it's a single value
   * it renders directly, if it's an array it renders
   * accumulated
   */
  setKey: function(key, options) {
    this.setKeys([key], options);
  },

  /**
   * returns the array of keys being rendered
   */
  getKeys: function() {
    return this.keys;
  },

  setKeys: function(keys, options) {
    this.keys = keys;
    this.animator.step(this.getKey());
    this._clearTileCaches();
    this.redraw(options && options.direct);
    this.fire('change:time', {
        time: this.getTime(),
        step: this.getKey(),
        start: this.getKey(),
        end: this.getLastKey()
    });
  },

  getKey: function() {
    return this.keys[0];
  },

  getLastKey: function() {
    return this.keys[this.keys.length - 1];
  },

  /**
   * helper function, does the same than ``setKey`` but only
   * accepts scalars.
   */
  setStep: function(time) {
    if(time === undefined || time.length !== undefined) {
      throw new Error("setTime only accept scalars");
    }
    this.setKey(time);
  },

  renderRange: function(start, end) {
    this.pause();
    var keys = [];
    for (var i = start; i <= end; i++) {
      keys.push(i);
    }
    this.setKeys(keys);
  },

  resetRenderRange: function() {
    this.stop();
    this.play();
  },

  /**
   * transform from animation step to Date object
   * that contains the animation time
   *
   * ``step`` should be between 0 and ``steps - 1``
   */
  stepToTime: function(step) {
    var times = this.provider.getKeySpan();
    var time = times.start + (times.end - times.start)*(step/this.provider.getSteps());
    return new Date(time);
  },

  timeToStep: function(timestamp) {
    if (typeof timestamp === "Date") timestamp = timestamp.getTime();
    if (!this.provider) return 0;
    var times = this.provider.getKeySpan();
    var step = (this.provider.getSteps() * (timestamp - times.start)) / (times.end - times.start);
    return step;
  },

  getStep: function() {
    return this.getKey();
  },

  /**
   * returns the animation time defined by the data
   * in the defined column. Date object
   */
  getTime: function() {
    return this.stepToTime(this.getKey());
  },

  /**
   * returns an object with the start and end times
   */
  getTimeSpan: function() {
    return this.provider.getKeySpan();
  },

  /**
   * set the cartocss for the current renderer
   */
  setCartoCSS: function(cartocss) {
    if (!this.renderer) throw new Error('renderer is not valid');

    if (this.provider && this.provider.options.named_map) {
      console.log('Torque layer: CartoCSS style on named maps is read-only');
      return false;
    }

    this.renderer.setCartoCSS(cartocss, function () {
      // provider options
      var options = torque.common.TorqueLayer.optionsFromLayer(this.renderer._shader.findLayer({ name: 'Map' }));
      this.provider.setCartoCSS && this.provider.setCartoCSS(cartocss);
      if(this.provider.setOptions(options)) {
        this._reloadTiles();
      }

      torque.extend(this.options, options);

      // animator options
      if (options.animationDuration) {
        this.animator.duration(options.animationDuration);
      }
      this._clearCaches();
      this.redraw();
      return this;
    }.bind(this));

  },

  /**
   * get active points for a step in active zoom
   * returns a list of bounding boxes [[] , [], []]
   * empty list if there is no active pixels
   */
  getActivePointsBBox: function(step) {
    var positions = [];
    for(var t in this._tiles) {
      var tile = this._tiles[t];
      positions = positions.concat(this.renderer.getActivePointsBBox(tile, step));
    }
    return positions;
  },

  /**
   * return an array with the values for all the pixels active for the step
   */
  getValues: function(step) {
    var values = [];
    step = step === undefined ? this.getKey(): step;
    var t, tile;
    for(t in this._tiles) {
      tile = this._tiles[t];
      this.renderer.getValues(tile, step, values);
    }
    return values;
  },

  /**
   * return the value for position relative to map coordinates. null for no value
   */
  getValueForPos: function(x, y, step) {
    step = step === undefined ? this.getKey(): step;
    var t, tile, pos, value = null, xx, yy;
    for(t in this._tiles) {
      tile = this._tiles[t];
      pos = this.getTilePos(tile.coord);
      xx = x - pos.x;
      yy = y - pos.y;
      if (xx >= 0 && yy >= 0 && xx < this.renderer.TILE_SIZE && yy <= this.renderer.TILE_SIZE) {
        value = this.renderer.getValueFor(tile, step, xx, yy);
      }
      if (value !== null) {
        return value;
      }
    }
    return null;
  },

  getValueForBBox: function(x, y, w, h) {
    var xf = x + w, yf = y + h, _x=x;
    var sum = 0;
    for(_y = y; _y<yf; _y+=this.options.resolution){
      for(_x = x; _x<xf; _x+=this.options.resolution){
        var thisValue = this.getValueForPos(_x,_y);
        if (thisValue){
          var bb = thisValue.bbox;
          var xy = this._map.latLngToContainerPoint([bb[1].lat, bb[1].lon]);
          if(xy.x < xf && xy.y < yf){
            sum += thisValue.value;
          }
        }
      }
    }
    return sum;
  },

  /** return the number of points for a step */
  pointCount: function(step) {
    var t, tile;
    step = step === undefined ? this.key: step;
    var c = 0;
    for(t in this._tiles) {
      tile = this._tiles[t];
      if (tile) {
        c += tile.timeCount[step];
      }
    }
    return c;
  },
  
  invalidate: function() {
    this.provider.reload();
  },

  setStepsRange: function(start, end) {
    this.animator.stepsRange(start, end);
  },

  removeStepsRange: function() {
    this.animator.removeCustomStepsRange();
  },

  getStepsRange: function() {
    return this.animator.stepsRange();
  },

  onRemove: function(map) {
    L.CanvasLayer.prototype.onRemove.apply(this, arguments);
    this.animator.stop();
  }
});

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"../":11,"./canvas_layer":12,"carto":undefined}],16:[function(require,module,exports){
  function clamp(a, b) {
    return function(t) {
      return Math.max(Math.min(t, b), a);
    };
  }

  function invLinear(a, b) {
    var c = clamp(0, 1.0);
    return function(t) {
      return c((t - a)/(b - a));
    };
  }

  function linear(a, b) {
    var c = clamp(a, b);
    function _linear(t) {
      return c(a*(1.0 - t) + t*b);
    }

    _linear.invert = function() {
      return invLinear(a, b);
    };

    return _linear;
  }

module.exports = {
    clamp: clamp,
    linear: linear,
    invLinear: invLinear
};

},{}],17:[function(require,module,exports){
var Point = function(x, y) {
  this.x = x || 0;
  this.y = y || 0;
};

function clamp(value, optMin, optMax) {
  if (optMin !== null) value = Math.max(value, optMin);
  if (optMax !== null) value = Math.min(value, optMax);
  return value;
}

function degreesToRadians(deg) {
  return deg * (Math.PI / 180);
}

function radiansToDegrees(rad) {
  return rad / (Math.PI / 180);
}


var MercatorProjection = function() {
//  this._tileSize = L.Browser.retina ? 512 : 256;
  this._tileSize = 256;
  this._pixelOrigin = new Point(this._tileSize / 2, this._tileSize / 2);
  this._pixelsPerLonDegree = this._tileSize / 360;
  this._pixelsPerLonRadian = this._tileSize / (2 * Math.PI);
};

MercatorProjection.prototype._fromLatLonToPoint = function(lat, lon) {
  var point = new Point(0, 0);
  var origin = this._pixelOrigin;

  point.x = origin.x + lon * this._pixelsPerLonDegree;

  // NOTE(appleton): Truncating to 0.9999 effectively limits latitude to
  // 89.189.  This is about a third of a tile past the edge of the world
  // tile.
  var siny = clamp(Math.sin(degreesToRadians(lat)), -0.9999, 0.9999);
  point.y = origin.y + 0.5 * Math.log((1 + siny) / (1 - siny)) * -this._pixelsPerLonRadian;
  return point;
};

MercatorProjection.prototype._fromPointToLatLon = function(point) {
  var me = this;
  var origin = me._pixelOrigin;
  var lon = (point.x - origin.x) / me._pixelsPerLonDegree;
  var latRadians = (point.y - origin.y) / -me._pixelsPerLonRadian;
  var lat = radiansToDegrees(2 * Math.atan(Math.exp(latRadians)) - Math.PI / 2);
  return { lat:lat, lon:lon };
};

MercatorProjection.prototype._tilePixelPos = function(tileX, tileY) {
  return {
    x: tileX*this._tileSize,
    y: tileY*this._tileSize
  };
};

MercatorProjection.prototype.tilePixelBBox = function(x, y, zoom, px, py, res) {
  res = res || 1.0;
  var numTiles = 1 <<zoom;
  var inc = res/numTiles;
  px = (x*this._tileSize + px)/numTiles;
  py = (y*this._tileSize + py)/numTiles;
  return [
    this._fromPointToLatLon(new Point(px, py + inc)),
    this._fromPointToLatLon(new Point(px + inc, py))
  ];
};

MercatorProjection.prototype.tileBBox = function(x, y, zoom, bufferSize) {
  var numTiles = 1 <<zoom;
  bufferSize = bufferSize || 0;
  var inc =  (this._tileSize + bufferSize*2)/numTiles;
  var px = (x*this._tileSize - bufferSize  )/numTiles;
  var py = (y*this._tileSize - bufferSize  )/numTiles;
  return [
    this._fromPointToLatLon(new Point(px, py + inc)),
    this._fromPointToLatLon(new Point(px + inc, py))
  ];
};

MercatorProjection.prototype.latLonToTilePoint = function(lat, lon, tileX, tileY, zoom) {
  var numTiles = 1 <<zoom;
  var worldCoordinate = this._fromLatLonToPoint(lat, lon);
  var pixelCoordinate = new Point(worldCoordinate.x*numTiles, worldCoordinate.y*numTiles);
  var tilePixelPos    = this._tilePixelPos(tileX, tileY);
  return new Point(Math.round(pixelCoordinate.x-tilePixelPos.x), Math.round(pixelCoordinate.y-tilePixelPos.y));
};

module.exports = MercatorProjection;

},{}],18:[function(require,module,exports){
require('./ol_tileloader_mixin');

ol.CanvasLayer = function(options) {
    this.root_ = document.createElement('div');
    this.root_.setAttribute('class', 'ol-heatmap-layer');

    this.options = {
        subdomains: 'abc',
        errorTileUrl: '',
        attribution: '',
        opacity: 1,
        tileLoader: false, // installs tile loading events
        tileSize: 256
    };

    options = options || {};
    torque.extend(this.options, options);

    ol.TileLoader.call(this, this.options.tileSize, this.options.maxZoom);

    this.render = this.render.bind(this);
    this._canvas = this._createCanvas();

    this.root_.appendChild(this._canvas);

    this._ctx = this._canvas.getContext('2d');
    this.currentAnimationFrame = -1;
    this.requestAnimationFrame = window.requestAnimationFrame || window.mozRequestAnimationFrame ||
    window.webkitRequestAnimationFrame || window.msRequestAnimationFrame || function (callback) {
        return window.setTimeout(callback, 1000 / 60);
    };
    this.cancelAnimationFrame = window.cancelAnimationFrame || window.mozCancelAnimationFrame ||
    window.webkitCancelAnimationFrame || window.msCancelAnimationFrame || function (id) {
        clearTimeout(id);
    };

    if(options.map){
        this.setMap(options.map);
    }
};

ol.inherits(ol.CanvasLayer, ol.TileLoader);

ol.CanvasLayer.prototype.setMap = function(map){
    if(this._map){
        //remove
        this._map.unByKey(this.pointdragKey_);
        this._map.unByKey(this.sizeChangedKey_);
        this._map.unByKey(this.moveendKey_);
        this._map.getView().unByKey(this.centerChanged_);
    }
    this._map = map;

    if(map){
        var overlayContainer  = this._map.getViewport().getElementsByClassName("ol-overlaycontainer")[0];
        overlayContainer.appendChild(this.root_);

        this.pointdragKey_ = map.on('pointerdrag', this._render, this);
        this.moveendKey_ = map.on("moveend", this._render, this);
        this.centerChanged_ = map.getView().on("change:center", this._render, this);
        this.sizeChangedKey_ = map.on('change:size', this._reset, this);

        if(this.options.tileLoader) {
            ol.TileLoader.prototype._initTileLoader.call(this, map);
        }
        this._reset();
    }
};

ol.CanvasLayer.prototype._createCanvas = function() {
    var canvas;
    canvas = document.createElement('canvas');
    canvas.style.position = 'absolute';
    canvas.style.top = 0;
    canvas.style.left = 0;
    canvas.style.pointerEvents = "none";
    canvas.style.zIndex = this.options.zIndex || 0;
    return canvas;
};

ol.CanvasLayer.prototype._reset = function () {
    this._resize();
};

ol.CanvasLayer.prototype._resize =  function() {
    var size = this._map.getSize();
    var width = size[0];
    var height = size[1];
    var oldWidth = this._canvas.width;
    var oldHeight = this._canvas.height;

    // resizing may allocate a new back buffer, so do so conservatively
    if (oldWidth !== width || oldHeight !== height) {
        this._canvas.width = width;
        this._canvas.height = height;
        this._canvas.style.width = width + 'px';
        this._canvas.style.height = height + 'px';
        this.root_.style.width = width + 'px';
        this.root_.style.height = height + 'px';
        this._render();
    }
};

ol.CanvasLayer.prototype._render = function() {
    if (this.currentAnimationFrame >= 0) {
        this.cancelAnimationFrame.call(window, this.currentAnimationFrame);
    }
    this.currentAnimationFrame = this.requestAnimationFrame.call(window, this.render);
};

ol.CanvasLayer.prototype.getCanvas = function() {
        return this._canvas;
};

ol.CanvasLayer.prototype.getAttribution = function() {
        return this.options.attribution;
};

ol.CanvasLayer.prototype.draw = function() {
        return this._render();
};

ol.CanvasLayer.prototype.redraw = function(direct) {
    if (direct) {
        this.render();
    } else {
        this._render();
    }
};

module.exports = ol.CanvasLayer;
},{"./ol_tileloader_mixin":20}],19:[function(require,module,exports){
if (typeof ol !== 'undefined') {
    require('./torque');
}

},{"./torque":21}],20:[function(require,module,exports){
ol.TileLoader = function(tileSize, maxZoom){
    this._tileSize = tileSize;
    this._tiles = {};
    this._tilesLoading = {};
    this._tilesToLoad = 0;
    this._updateTiles = this._updateTiles.bind(this);

    this._tileGrid = ol.tilegrid.createXYZ({
        maxZoom: maxZoom,
        tileSize: tileSize
    });
};

ol.TileLoader.prototype._initTileLoader = function(map) {
    this._map = map;
    this._view = map.getView();
    this._centerChangedId = this._view.on("change:center", function(e){
        this._updateTiles();
    },  this);

    this._postcomposeKey = undefined;

    this._resolutionChangedId = this._view.on("change:resolution", function(evt){
        this._currentResolution = this._view.getResolution();
        if(this._postcomposeKey) return;
        this.fire("mapZoomStart");
        this._postcomposeKey = this._map.on("postcompose", function(evt) {
            if(evt.frameState.viewState.resolution === this._currentResolution){
                this._updateTiles();
                this._map.unByKey(this._postcomposeKey);
                this._postcomposeKey = undefined;
                this.fire("mapZoomEnd");
            }
        }, this);
    }, this);

    this._updateTiles();
};
ol.TileLoader.prototype._removeTileLoader = function() {
    this._view.unByKey(this._centerChangedId);
    this._view.unByKey(this._resolutionChangedId );

    this._removeTiles();
};

ol.TileLoader.prototype._removeTiles = function () {
    for (var key in this._tiles) {
        this._removeTile(key);
    }
};

ol.TileLoader.prototype._reloadTiles = function() {
    this._removeTiles();
    this._updateTiles();
};

ol.TileLoader.prototype._updateTiles = function () {
    if (!this._map) { return; }

    var zoom =  this._tileGrid.getZForResolution(this._view.getResolution());
    var extent = this._view.calculateExtent(this._map.getSize());

    var tileRange = this._requestTilesForExtentAndZ(extent, zoom);
    this._removeOtherTiles(tileRange);
};

ol.TileLoader.prototype._removeOtherTiles = function(tileRange) {
    var kArr, x, y, z, key;

    var zoom =  this._tileGrid.getZForResolution(this._view.getResolution());

    for (key in this._tiles) {
        if (this._tiles.hasOwnProperty(key)) {
            kArr = key.split(':');
            x = parseInt(kArr[0], 10);
            y = parseInt(kArr[1], 10);
            z = parseInt(kArr[2], 10);

            // remove tile if it's out of bounds
            if (z !== zoom || x < tileRange.minX || x > tileRange.maxX || ((-y-1) < tileRange.minY) || (-y-1) > tileRange.maxY) {
                this._removeTile(key);
            }
        }
    }
};

ol.TileLoader.prototype._removeTile = function (key) {
    this.fire('tileRemoved', this._tiles[key]);
    delete this._tiles[key];
    delete this._tilesLoading[key];
};

ol.TileLoader.prototype._tileKey = function(tilePoint) {
    return tilePoint.x + ':' + tilePoint.y + ':' + tilePoint.zoom;
};

ol.TileLoader.prototype._tileShouldBeLoaded = function (tilePoint) {
    var k = this._tileKey(tilePoint);
    return !(k in this._tiles)  && !(k in this._tilesLoading);
};

ol.TileLoader.prototype._removeFromTilesLoading = function(tilePoint){
    this._tilesToLoad--;
    var k = this._tileKey(tilePoint);
    delete this._tilesLoading[k];
    if(this._tilesToLoad === 0) {
        this.fire("tilesLoaded");
    }
};

ol.TileLoader.prototype._tileLoaded = function(tilePoint, tileData) {
    var k = this._tileKey(tilePoint);
    this._tiles[k] = tileData;
};

ol.TileLoader.prototype.getTilePos = function (tilePoint) {
    var zoom =  this._tileGrid.getZForResolution(this._view.getResolution());
    var extent = this._tileGrid.getTileCoordExtent([zoom, tilePoint.x, -tilePoint.y-1]);
    var topLeft = this._map.getPixelFromCoordinate([extent[0], extent[3]]);

    return {
        x: topLeft[0],
        y: topLeft[1]
    };
};

ol.TileLoader.prototype._requestTilesForExtentAndZ = function (extent, zoom) {
    var queue = [];
    var tileCoords = [];

    this._tileGrid.forEachTileCoord(extent, zoom, function(coord){
        tileCoords.push(coord);
        var point = {
            x: coord[1],
            y: -coord[2] - 1,
            zoom: coord[0]
        };

        if (this._tileShouldBeLoaded(point)) {
            queue.push(point);
        }
    }.bind(this));

    var tilesToLoad = queue.length;
    if (tilesToLoad > 0) {
        this._tilesToLoad += tilesToLoad;

        for (var i = 0; i < tilesToLoad; i++) {
            var t = queue[i];
            var k = this._tileKey(t);
            this._tilesLoading[k] = t;
            // events
            this.fire('tileAdded', t);
        }

        this.fire("tilesLoading");
    }

    var tileRange = {
        minX : tileCoords[0][1],
        maxX : tileCoords [tileCoords.length - 1][1],
        minY : tileCoords[0][2],
        maxY : tileCoords [tileCoords.length - 1] [2]
    };

    return tileRange;
};

module.exports = ol.TileLoader;

},{}],21:[function(require,module,exports){
(function (global){
var carto = global.carto || require('carto');
var torque = require('../');
require('./canvas_layer');

ol.TorqueLayer = function(options){
    var self = this;
    if (!torque.isBrowserSupported()) {
        throw new Error("browser is not supported by torque");
    }
    options.tileLoader = true;
    this.keys = [0];
    Object.defineProperty(this, 'key', {
        get: function() {
            return this.getKey();
        }
    });
    this.prevRenderedKey = 0;
    if (options.cartocss) {
        torque.extend(options, torque.common.TorqueLayer.optionsFromCartoCSS(options.cartocss));
    }

    options.resolution = options.resolution || 2;
    options.steps = options.steps || 100;
    options.visible = options.visible === undefined ? true: options.visible;
    this.hidden = !options.visible;

    this.animator = new torque.Animator(function(time) {
        var k = time | 0;
        if(self.getKey() !== k) {
            self.setKey(k, { direct: true });
        }
    }, torque.extend(torque.clone(options), {
        onPause: function() {
            self.fire('pause');
        },
        onStop: function() {
            self.fire('stop');
        },
        onStart: function() {
            self.fire('play');
        },
        onStepsRange: function() {
            self.fire('change:stepsRange', self.animator.stepsRange());
        }
    }));

    this.play = this.animator.start.bind(this.animator);
    this.stop = this.animator.stop.bind(this.animator);
    this.pause = this.animator.pause.bind(this.animator);
    this.toggle = this.animator.toggle.bind(this.animator);
    this.setDuration = this.animator.duration.bind(this.animator);
    this.isRunning = this.animator.isRunning.bind(this.animator);


    ol.CanvasLayer.call(this, options);

    this.options.renderer = this.options.renderer || 'point';
    this.options.provider = this.options.provider || 'windshaft';

    if (this.options.tileJSON) this.options.provider = 'tileJSON';

    this.provider = new this.providers[this.options.provider](options);
    this.renderer = new this.renderers[this.options.renderer](this.getCanvas(), options);

    options.ready = function() {
        self.fire("change:bounds", {
            bounds: self.provider.getBounds()
        });
        self.animator.steps(self.provider.getSteps());
        self.animator.rescale();
        self.fire('change:steps', {
            steps: self.provider.getSteps()
        });
        self.setKeys(self.getKeys());
    };

    this.renderer.on("allIconsLoaded", this.render.bind(this));


    // for each tile shown on the map request the data
    this.on('tileAdded', function(t) {
        var tileData = this.provider.getTileData(t, t.zoom, function(tileData) {
            self._removeFromTilesLoading(t);
            if (t.zoom !== self._tileGrid.getZForResolution(self._view.getResolution())) return;
            self._tileLoaded(t, tileData);
            self.fire('tileLoaded');
            if (tileData) {
                self.redraw();
            }
        });
    }, this);

    this.on('mapZoomStart', function(){
        this.getCanvas().style.display = "none";
        this._pauseOnZoom();
    }, this);

    this.on('mapZoomEnd', function() {
        this.getCanvas().style.display = "block";
        this._resumeOnZoom();
    }, this);
};

ol.TorqueLayer.prototype = torque.extend({},
    ol.CanvasLayer.prototype,
    torque.Event,
    {
    providers: {
        'sql_api': torque.providers.json,
        'url_template': torque.providers.JsonArray,
        'windshaft': torque.providers.windshaft,
        'tileJSON': torque.providers.tileJSON
    },

    renderers: {
        'point': torque.renderer.Point,
        'pixel': torque.renderer.Rectangle
    },

    onAdd: function(map){
        ol.CanvasLayer.prototype.setMap.call(this, map);
    },

    onRemove: function(map) {
        this.fire('remove');
        this._removeTileLoader();
    },

    _pauseOnZoom: function() {
        this.wasRunning = this.isRunning();
        if (this.wasRunning) {
            this.pause();
        }
    },

    _resumeOnZoom: function() {
        if (this.wasRunning) {
            this.play();
        }
    },

    hide: function() {
        if(this.hidden) return this;
        this.pause();
        this.clear();
        this.hidden = true;
        return this;
    },

    show: function() {
        if(!this.hidden) return this;
        this.hidden = false;
        this.play();
        if (this.options.steps === 1){
            this.redraw();
        }
        return this;
    },

    setSQL: function(sql) {
        if (this.provider.options.named_map) throw new Error("SQL queries on named maps are read-only");
        if (!this.provider || !this.provider.setSQL) {
            throw new Error("this provider does not support SQL");
        }
        this.provider.setSQL(sql);
        this._reloadTiles();
        return this;
    },

    setBlendMode: function(_) {
        this.renderer.setBlendMode(_);
        this.redraw();
    },

    setSteps: function(steps) {
        this.provider.setSteps(steps);
        this._reloadTiles();
    },

    setColumn: function(column, isTime) {
        this.provider.setColumn(column, isTime);
        this._reloadTiles();
    },

    getTimeBounds: function() {
        return this.provider && this.provider.getKeySpan();
    },

    clear: function() {
        var canvas = this.getCanvas();
        canvas.width = canvas.width;
    },

    /**
     * render the selectef key
     * don't call this function directly, it's called by
     * requestAnimationFrame. Use redraw to refresh it
     */
    render: function() {
        if(this.hidden) return;
        var t, tile, pos;
        var canvas = this.getCanvas();
        this.renderer.clearCanvas();
        var ctx = canvas.getContext('2d');

        // renders only a "frame"
        for(t in this._tiles) {
            tile = this._tiles[t];
            if (tile) {
                pos = this.getTilePos(tile.coord);
                ctx.setTransform(1, 0, 0, 1, pos.x, pos.y);
                this.renderer.renderTile(tile, this.keys);
            }
        }
        this.renderer.applyFilters();
    },

    /**
     * set key to be shown. If it's a single value
     * it renders directly, if it's an array it renders
     * accumulated
     */
    setKey: function(key, options) {
        this.setKeys([key], options);
    },

    /**
     * returns the array of keys being rendered
     */
    getKeys: function() {
        return this.keys;
    },

    setKeys: function(keys, options) {
        this.keys = keys;
        this.animator.step(this.getKey());
        this.redraw(options && options.direct);
        this.fire('change:time', {
            time: this.getTime(),
            step: this.getKey(),
            start: this.getKey(),
            end: this.getLastKey()
        });
    },

    getKey: function() {
        return this.keys[0];
    },

    getLastKey: function() {
        return this.keys[this.keys.length - 1];
    },

    /**
     * helper function, does the same than ``setKey`` but only
     * accepts scalars.
     */
    setStep: function(time) {
        if(time === undefined || time.length !== undefined) {
            throw new Error("setTime only accept scalars");
        }
        this.setKey(time);
    },

    renderRange: function(start, end) {
        this.pause();
        var keys = [];
        for (var i = start; i <= end; i++) {
            keys.push(i);
        }
        this.setKeys(keys);
    },

    resetRenderRange: function() {
        this.stop();
        this.play();
    },

    /**
     * transform from animation step to Date object
     * that contains the animation time
     *
     * ``step`` should be between 0 and ``steps - 1``
     */
    stepToTime: function(step) {
        var times = this.provider.getKeySpan();
        var time = times.start + (times.end - times.start)*(step/this.provider.getSteps());
        return new Date(time);
    },

    timeToStep: function(timestamp) {
        if (typeof timestamp === "Date") timestamp = timestamp.getTime();
        if (!this.provider) return 0;
        var times = this.provider.getKeySpan();
        var step = (this.provider.getSteps() * (timestamp - times.start)) / (times.end - times.start);
        return step;
    },

    getStep: function() {
        return this.getKey();
    },

    /**
     * returns the animation time defined by the data
     * in the defined column. Date object
     */
    getTime: function() {
        return this.stepToTime(this.getKey());
    },

    /**
     * returns an object with the start and end times
     */
    getTimeSpan: function() {
        return this.provider.getKeySpan();
    },

    /**
     * set the cartocss for the current renderer
     */
    setCartoCSS: function(cartocss) {
        if (this.provider.options.named_map) throw new Error("CartoCSS style on named maps is read-only");
        if (!this.renderer) throw new Error('renderer is not valid');
        var shader = new carto.RendererJS().render(cartocss);
        this.renderer.setShader(shader);

        // provider options
        var options = torque.common.TorqueLayer.optionsFromLayer(shader.findLayer({ name: 'Map' }));
        this.provider.setCartoCSS && this.provider.setCartoCSS(cartocss);
        if(this.provider.setOptions(options)) {
            this._reloadTiles();
        }

        torque.extend(this.options, options);

        // animator options
        if (options.animationDuration) {
            this.animator.duration(options.animationDuration);
        }
        this.redraw();
        return this;
    },

    /**
     * get active points for a step in active zoom
     * returns a list of bounding boxes [[] , [], []]
     * empty list if there is no active pixels
     */
    getActivePointsBBox: function(step) {
        var positions = [];
        for(var t in this._tiles) {
            var tile = this._tiles[t];
            positions = positions.concat(this.renderer.getActivePointsBBox(tile, step));
        }
        return positions;
    },

    /**
     * return an array with the values for all the pixels active for the step
     */
    getValues: function(step) {
        var values = [];
        step = step === undefined ? this.getKey(): step;
        var t, tile;
        for(t in this._tiles) {
            tile = this._tiles[t];
            this.renderer.getValues(tile, step, values);
        }
        return values;
    },

    /**
     * return the value for position relative to map coordinates. null for no value
     */
    getValueForPos: function(x, y, step) {
        step = step === undefined ? this.getKey(): step;
        var t, tile, pos, value = null, xx, yy;
        for(t in this._tiles) {
            tile = this._tiles[t];
            pos = this.getTilePos(tile.coord);
            xx = x - pos.x;
            yy = y - pos.y;
            if (xx >= 0 && yy >= 0 && xx < this.renderer.TILE_SIZE && yy <= this.renderer.TILE_SIZE) {
                value = this.renderer.getValueFor(tile, step, xx, yy);
            }
            if (value !== null) {
                return value;
            }
        }
        return null;
    },

    getValueForBBox: function(x, y, w, h) {
        var xf = x + w, yf = y + h, _x=x;
        var sum = 0;
        for(_y = y; _y<yf; _y+=this.options.resolution){
            for(_x = x; _x<xf; _x+=this.options.resolution){
                var thisValue = this.getValueForPos(_x,_y);
                if (thisValue){
                    var bb = thisValue.bbox;
                    var xy = this._map.latLngToContainerPoint([bb[1].lat, bb[1].lon]);
                    if(xy.x < xf && xy.y < yf){
                        sum += thisValue.value;
                    }
                }
            }
        }
        return sum;
    },

    /** return the number of points for a step */
    pointCount: function(step) {
        var t, tile;
        step = step === undefined ? this.key: step;
        var c = 0;
        for(t in this._tiles) {
            tile = this._tiles[t];
            if (tile) {
                c += tile.timeCount[step];
            }
        }
        return c;
    },

    invalidate: function() {
        this.provider.reload();
    },

    setStepsRange: function(start, end) {
        this.animator.stepsRange(start, end);
    },

    removeStepsRange: function() {
        this.animator.removeCustomStepsRange();
    },

    getStepsRange: function() {
        return this.animator.stepsRange();
    }
});


module.exports = ol.TorqueLayer;
}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"../":11,"./canvas_layer":18,"carto":undefined}],22:[function(require,module,exports){
/*
# metrics profiler

## timing

```
 var timer = Profiler.metric('resource:load')
 time.start();
 ...
 time.end();
```

## counters

```
 var counter = Profiler.metric('requests')
 counter.inc();   // 1
 counter.inc(10); // 11
 counter.dec()    // 10
 counter.dec(10)  // 0
```

## Calls per second
```
  var fps = Profiler.metric('fps')
  function render() {
    fps.mark();
  }
```
*/
var MAX_HISTORY = 1024;
function Profiler() {}
Profiler.metrics = {};

Profiler.get = function(name) {
  return Profiler.metrics[name] || {
    max: 0,
    min: Number.MAX_VALUE,
    avg: 0,
    total: 0,
    count: 0,
    history: typeof(Float32Array) !== 'undefined' ? new Float32Array(MAX_HISTORY) : []
  };
};

Profiler.new_value = function (name, value) {
  var t = Profiler.metrics[name] = Profiler.get(name);

  t.max = Math.max(t.max, value);
  t.min = Math.min(t.min, value);
  t.total += value;
  ++t.count;
  t.avg = t.total / t.count;
  t.history[t.count%MAX_HISTORY] = value;
};

Profiler.print_stats = function () {
  for (k in Profiler.metrics) {
    var t = Profiler.metrics[k];
    console.log(" === " + k + " === ");
    console.log(" max: " + t.max);
    console.log(" min: " + t.min);
    console.log(" avg: " + t.avg);
    console.log(" count: " + t.count);
    console.log(" total: " + t.total);
  }
};

function Metric(name) {
  this.t0 = null;
  this.name = name;
  this.count = 0;
}

Metric.prototype = {

  //
  // start a time measurement
  //
  start: function() {
    this.t0 = +new Date();
    return this;
  },

  // elapsed time since start was called
  _elapsed: function() {
    return +new Date() - this.t0;
  },

  //
  // finish a time measurement and register it
  // ``start`` should be called first, if not this 
  // function does not take effect
  //
  end: function() {
    if (this.t0 !== null) {
      Profiler.new_value(this.name, this._elapsed());
      this.t0 = null;
    }
  },

  //
  // increments the value 
  // qty: how many, default = 1
  //
  inc: function(qty) {
    qty = qty === undefined ? 1: qty;
    Profiler.new_value(this.name, Profiler.get(this.name).count + (qty ? qty: 0));
  },

  //
  // decrements the value 
  // qty: how many, default = 1
  //
  dec: function(qty) {
    qty = qty === undefined ? 1: qty;
    this.inc(-qty);
  },

  //
  // measures how many times per second this function is called
  //
  mark: function() {
    ++this.count;
    if(this.t0 === null) {
      this.start();
      return;
    }
    var elapsed = this._elapsed();
    if(elapsed > 1) {
      Profiler.new_value(this.name, this.count);
      this.count = 0;
      this.start();
    }
  }
};

Profiler.metric = function(name) {
  return new Metric(name);
};

module.exports = Profiler;

},{}],23:[function(require,module,exports){
module.exports = {
    json: require('./json'),
    JsonArray: require('./jsonarray'),
    windshaft: require('./windshaft'),
    tileJSON: require('./tilejson')
};

},{"./json":24,"./jsonarray":25,"./tilejson":26,"./windshaft":27}],24:[function(require,module,exports){
var torque = require('../');
var Profiler = require('../profiler');

  var Uint8Array = torque.types.Uint8Array;
  var Int32Array = torque.types.Int32Array;
  var Uint32Array = torque.types.Uint32Array;

  // format('hello, {0}', 'rambo') -> "hello, rambo"
  function format(str) {
    for(var i = 1; i < arguments.length; ++i) {
      var attrs = arguments[i];
      for(var attr in attrs) {
        str = str.replace(RegExp('\\{' + attr + '\\}', 'g'), attrs[attr]);
      }
    }
    return str;
  }

  var json = function (options) {
    this._ready = false;
    this._tileQueue = [];
    this.options = options;

    this.options.is_time = this.options.is_time === undefined ? true: this.options.is_time;
    this.options.tiler_protocol = options.tiler_protocol || 'http';
    this.options.tiler_domain = options.tiler_domain || 'cartodb.com';
    this.options.tiler_port = options.tiler_port || 80;

    if (this.options.data_aggregation) {
      this.options.cumulative = this.options.data_aggregation === 'cumulative';
    }

    // check options
    if (options.resolution === undefined ) throw new Error("resolution should be provided");
    if (options.steps === undefined ) throw new Error("steps should be provided");
    if(options.start === undefined) {
      this._fetchKeySpan();
    } else {
      this._setReady(true);
    }
  };

  json.prototype = {

    /**
     * return the torque tile encoded in an efficient javascript
     * structure:
     * {
     *   x:Uint8Array x coordinates in tile reference system, normally from 0-255
     *   y:Uint8Array y coordinates in tile reference system
     *   Index: Array index to the properties
     * }
     */
    proccessTile: function(rows, coord, zoom) {
      var r;
      var x = new Uint8Array(rows.length);
      var y = new Uint8Array(rows.length);

      var prof_mem = Profiler.metric('ProviderJSON:mem');
      var prof_point_count = Profiler.metric('ProviderJSON:point_count');
      var prof_process_time = Profiler.metric('ProviderJSON:process_time').start()

      // count number of dates
      var dates = 0;
      var maxDateSlots = -1;
      for (r = 0; r < rows.length; ++r) {
        var row = rows[r];
        dates += row.dates__uint16.length;
        for(var d = 0; d < row.dates__uint16.length; ++d) {
          maxDateSlots = Math.max(maxDateSlots, row.dates__uint16[d]);
        }
      }

      if(this.options.cumulative) {
        dates = (1 + maxDateSlots) * rows.length;
      }

      var type = this.options.cumulative ? Uint32Array: Uint8Array;

      // reserve memory for all the dates
      var timeIndex = new Int32Array(maxDateSlots + 1); //index-size
      var timeCount = new Int32Array(maxDateSlots + 1);
      var renderData = new (this.options.valueDataType || type)(dates);
      var renderDataPos = new Uint32Array(dates);

      prof_mem.inc(
        4 * maxDateSlots + // timeIndex
        4 * maxDateSlots + // timeCount
        dates + //renderData
        dates * 4
      ); //renderDataPos

      prof_point_count.inc(rows.length);

      var rowsPerSlot = {};

      // precache pixel positions
      for (var r = 0; r < rows.length; ++r) {
        var row = rows[r];
        x[r] = row.x__uint8 * this.options.resolution;
        // fix value when it's in the tile EDGE
        // TODO: this should be fixed in SQL query
        if (row.y__uint8 === -1) {
          y[r] = 0;
        } else {
          y[r] = row.y__uint8 * this.options.resolution;
        }

        var dates = row.dates__uint16;
        var vals = row.vals__uint8;
        if (!this.options.cumulative) {
          for (var j = 0, len = dates.length; j < len; ++j) {
              var rr = rowsPerSlot[dates[j]] || (rowsPerSlot[dates[j]] = []);
              if(this.options.cumulative) {
                  vals[j] += prev_val;
              }
              prev_val = vals[j];
              rr.push([r, vals[j]]);
          }
        } else {
          var valByDate = {}
          for (var j = 0, len = dates.length; j < len; ++j) {
            valByDate[dates[j]] = vals[j];
          }
          var accum = 0;

          // extend the latest to the end
          for (var j = dates[0]; j <= maxDateSlots; ++j) {
              var rr = rowsPerSlot[j] || (rowsPerSlot[j] = []);
              var v = valByDate[j];
              if (v) {
                accum += v;
              }
              rr.push([r, accum]);
          }

          /*var lastDateSlot = dates[dates.length - 1];
          for (var j = lastDateSlot + 1; j <= maxDateSlots; ++j) {
            var rr = rowsPerSlot[j] || (rowsPerSlot[j] = []);
            rr.push([r, prev_val]);
          }
          */
        }

      }

      // for each timeslot search active buckets
      var renderDataIndex = 0;
      var timeSlotIndex = 0;
      var i = 0;
      for(var i = 0; i <= maxDateSlots; ++i) {
        var c = 0;
        var slotRows = rowsPerSlot[i]
        if(slotRows) {
          for (var r = 0; r < slotRows.length; ++r) {
            var rr = slotRows[r];
            ++c;
            renderDataPos[renderDataIndex] = rr[0]
            renderData[renderDataIndex] = rr[1];
            ++renderDataIndex;
          }
        }
        timeIndex[i] = timeSlotIndex;
        timeCount[i] = c;
        timeSlotIndex += c;
      }

      prof_process_time.end();

      return {
        x: x,
        y: y,
        z: zoom,
        coord: {
          x: coord.x,
          y: coord.y,
          z: zoom
        },
        timeCount: timeCount,
        timeIndex: timeIndex,
        renderDataPos: renderDataPos,
        renderData: renderData,
        maxDate: maxDateSlots
      };
    },

    _host: function() {
      var opts = this.options;
      var port = opts.sql_api_port;
      var domain = ((opts.user_name || opts.user) + '.' + (opts.sql_api_domain || 'cartodb.com')) + (port ? ':' + port: '');
      var protocol = opts.sql_api_protocol || 'http';
      return this.options.url || protocol + '://' + domain + '/api/v2/sql';
    },

    url: function(subhost) {
      var opts = this.options;
      var protocol = opts.sql_api_protocol || 'http';
      if (!this.options.cdn_url) {
        return this._host();
      }
      var h = protocol+ "://";
      if (subhost) {
        h += subhost + ".";
      }
      var cdn_host = opts.cdn_url;
      if(!cdn_host.http && !cdn_host.https) {
        throw new Error("cdn_host should contain http and/or https entries");
      }
      h += cdn_host[protocol] + "/" + (opts.user_name || opts.user) + '/api/v2/sql';
      return h;
    },

    _hash: function(str) {
      var hash = 0;
      if (!str || str.length == 0) return hash;
      for (var i = 0, l = str.length; i < l; ++i) {
          hash = (( (hash << 5 ) - hash ) + str.charCodeAt(i)) | 0;
      }
      return hash;
    },

    _extraParams: function() {
      if (this.options.extra_params) {
        var p = [];
        for(var k in this.options.extra_params) {
          var v = this.options.extra_params[k];
          if (v) {
            p.push(k + "=" + encodeURIComponent(v));
          }
        }
        return p.join('&');
      }
      return null;
    },

    isHttps: function() {
      return this.options.sql_api_protocol && this.options.sql_api_protocol === 'https';
    },

    // execute actual query
    sql: function(sql, callback, options) {
      options = options || {};
      var subdomains = this.options.subdomains || '0123';
      if(this.isHttps()) {
        subdomains = [null]; // no subdomain
      }


      var url;
      if (options.no_cdn) {
        url = this._host();
      } else {
        url = this.url(subdomains[Math.abs(this._hash(sql))%subdomains.length]);
      }
      var extra = this._extraParams();
      torque.net.get( url + "?q=" + encodeURIComponent(sql) + (extra ? "&" + extra: ''), function (data) {
          if(options.parseJSON) {
            data = JSON.parse(data && data.responseText);
          }
          callback && callback(data);
      });
    },

    getTileData: function(coord, zoom, callback) {
      if(!this._ready) {
        this._tileQueue.push([coord, zoom, callback]);
      } else {
        this._getTileData(coord, zoom, callback);
      }
    },

    _setReady: function(ready) {
      this._ready = true;
      this._processQueue();
      this.options.ready && this.options.ready();
    },

    _processQueue: function() {
      var item;
      while (item = this._tileQueue.pop()) {
        this._getTileData.apply(this, item);
      }
    },

    /**
     * `coord` object like {x : tilex, y: tiley }
     * `zoom` quadtree zoom level
     */
    _getTileData: function(coord, zoom, callback) {
      var prof_fetch_time = Profiler.metric('ProviderJSON:tile_fetch_time').start()
      this.table = this.options.table;
      var numTiles = 1 << zoom;

      var column_conv = this.options.column;

      if(this.options.is_time) {
        column_conv = format("date_part('epoch', {column})", this.options);
      }

      var sql = "" +
        "WITH " +
        "par AS (" +
        "  SELECT CDB_XYZ_Resolution({zoom})*{resolution} as res" +
        ",  256/{resolution} as tile_size" +
        ", CDB_XYZ_Extent({x}, {y}, {zoom}) as ext "  +
        ")," +
        "cte AS ( "+
        "  SELECT ST_SnapToGrid(i.the_geom_webmercator, p.res) g" +
        ", {countby} c" +
        ", floor(({column_conv} - {start})/{step}) d" +
        "  FROM ({_sql}) i, par p " +
        "  WHERE i.the_geom_webmercator && p.ext " +
        "  GROUP BY g, d" +
        ") " +
        "" +
        "SELECT (st_x(g)-st_xmin(p.ext))/p.res x__uint8, " +
        "       (st_y(g)-st_ymin(p.ext))/p.res y__uint8," +
        " array_agg(c) vals__uint8," +
        " array_agg(d) dates__uint16" +
        // the tile_size where are needed because the overlaps query in cte subquery includes the points
        // in the left and bottom borders of the tile
        " FROM cte, par p where (st_y(g)-st_ymin(p.ext))/p.res < tile_size and (st_x(g)-st_xmin(p.ext))/p.res < tile_size GROUP BY x__uint8, y__uint8";


      var query = format(sql, this.options, {
        zoom: zoom,
        x: coord.x,
        y: coord.y,
        column_conv: column_conv,
        _sql: this.getSQL()
      });

      var self = this;
      this.sql(query, function (data) {
        if (data) {
          var rows = JSON.parse(data.responseText).rows;
          callback(self.proccessTile(rows, coord, zoom));
        } else {
          callback(null);
        }
        prof_fetch_time.end();
      });
    },

    getKeySpan: function() {
      return {
        start: this.options.start * 1000,
        end: this.options.end * 1000,
        step: this.options.step,
        steps: this.options.steps,
        columnType: this.options.is_time ? 'date': 'number'
      };
    },

    setColumn: function(column, isTime) {
      this.options.column = column;
      this.options.is_time = isTime === undefined ? true: false;
      this.reload();
    },

    setResolution: function(res) {
      this.options.resolution = res;
    },

    // return true if tiles has been changed
    setOptions: function(opt) {
      var refresh = false;

      if(opt.resolution !== undefined && opt.resolution !== this.options.resolution) {
        this.options.resolution = opt.resolution;
        refresh = true;
      }

      if(opt.steps !== undefined && opt.steps !== this.options.steps) {
        this.setSteps(opt.steps, { silent: true });
        refresh = true;
      }

      if(opt.column !== undefined && opt.column !== this.options.column) {
        this.options.column = opt.column;
        refresh = true;
      }

      if(opt.countby !== undefined && opt.countby !== this.options.countby) {
        this.options.countby = opt.countby;
        refresh = true;
      }

      if(opt.data_aggregation !== undefined) {
        var c = opt.data_aggregation === 'cumulative';
        if (this.options.cumulative !== c) {
          this.options.cumulative = c;
          refresh = true;
        }
      }

      if (refresh) this.reload();
      return refresh;

    },

    reload: function() {
      this._ready = false;
      this._fetchKeySpan();
    },

    setSQL: function(sql) {
      if (this.options.sql != sql) {
        this.options.sql = sql;
        this.reload();
      }
    },

    getSteps: function() {
      return Math.min(this.options.steps, this.options.data_steps);
    },

    setSteps: function(steps, opt) {
      opt = opt || {};
      if (this.options.steps !== steps) {
        this.options.steps = steps;
        this.options.step = (this.options.end - this.options.start)/this.getSteps();
        this.options.step = this.options.step || 1;
        if (!opt.silent) this.reload();
      }
    },

    getBounds: function() {
      return this.options.bounds;
    },

    getSQL: function() {
      return this.options.sql || "select * from " + this.options.table;
    },

    _tilerHost: function() {
      var opts = this.options;
      var user = (opts.user_name || opts.user);
      return opts.tiler_protocol +
           "://" + (user ? user + "." : "")  +
           opts.tiler_domain +
           ((opts.tiler_port != "") ? (":" + opts.tiler_port) : "");
    },

    _fetchUpdateAt: function(callback) {
      var self = this;
      var layergroup = {
        "version": "1.0.1",
        "stat_tag": this.options.stat_tag || 'torque',
        "layers": [{
          "type": "cartodb",
          "options": {
            "cartocss_version": "2.1.1", 
            "cartocss": "#layer {}",
            "sql": this.getSQL()
          }
        }]
      };
      var url = this._tilerHost() + "/tiles/layergroup";
      var extra = this._extraParams();

      // tiler needs map_key instead of api_key
      // so replace it
      if (extra) {
        extra = extra.replace('api_key=', 'map_key=');
      }

      url = url +
        "?config=" + encodeURIComponent(JSON.stringify(layergroup)) +
        "&callback=?" + (extra ? "&" + extra: '');

      torque.net.jsonp(url, function (data) {
        var query = format("select * from ({sql}) __torque_wrap_sql limit 0", { sql: self.getSQL() });
        self.sql(query, function (queryData) {
          if (data && queryData) {
            callback({
              updated_at: data.last_updated,
              fields: queryData.fields
            });
          }
        }, { parseJSON: true });
      });
    },

    //
    // the data range could be set by the user though ``start``
    // option. It can be fecthed from the table when the start
    // is not specified.
    //
    _fetchKeySpan: function() {
      var self = this;
      var max_col, min_col, max_tmpl, min_tmpl;

      this._fetchUpdateAt(function(data) {
        if (!data) return;
        self.options.extra_params = self.options.extra_params || {};
        self.options.extra_params.last_updated = data.updated_at || 0;
        self.options.extra_params.cache_policy = 'persist';
        self.options.is_time = data.fields[self.options.column].type === 'date';

        var column_conv = self.options.column;
        if (self.options.is_time){
          max_tmpl = "date_part('epoch', max({column}))";
          min_tmpl = "date_part('epoch', min({column}))";
          column_conv = format("date_part('epoch', {column})", self.options);
        } else {
          max_tmpl = "max({column})";
          min_tmpl = "min({column})";
        }

        max_col = format(max_tmpl, { column: self.options.column });
        min_col = format(min_tmpl, { column: self.options.column });

        /*var sql_stats = "" +
        "WITH summary_groups as ( " +
          "WITH summary as ( " +
           "select   (row_number() over (order by __time_col asc nulls last)+1)/2 as rownum, __time_col " +
            "from (select *, {column} as __time_col from ({sql}) __s) __torque_wrap_sql " +
            "order by __time_col asc " +
          ") " +
          "SELECT " +
          "max(__time_col) OVER(PARTITION BY rownum) -  " +
          "min(__time_col) OVER(PARTITION BY rownum) diff " +
          "FROM summary " +
        "), subq as ( " +
        " SELECT " +
            "st_xmax(st_envelope(st_collect(the_geom))) xmax, " +
            "st_ymax(st_envelope(st_collect(the_geom))) ymax, " +
            "st_xmin(st_envelope(st_collect(the_geom))) xmin, " +
            "st_ymin(st_envelope(st_collect(the_geom))) ymin, " +
            "{max_col} max, " +
            "{min_col} min FROM  ({sql}) __torque_wrap_sql " +
        ")" +
        "SELECT " +
        "xmax, xmin, ymax, ymin, a.max as max_date, a.min as min_date, " +
        "avg(diff) as diffavg," +
        "(a.max - a.min)/avg(diff) as num_steps " +
        "FROM summary_groups, subq a  " +
        "WHERE diff > 0 group by xmax, xmin, ymax, ymin, max_date, min_date";
        */
        var sql_stats = " SELECT " +
            "st_xmax(st_envelope(st_collect(the_geom))) xmax, " +
            "st_ymax(st_envelope(st_collect(the_geom))) ymax, " +
            "st_xmin(st_envelope(st_collect(the_geom))) xmin, " +
            "st_ymin(st_envelope(st_collect(the_geom))) ymin, " +
            "count(*) as num_steps, " +
            "{max_col} max_date, " +
            "{min_col} min_date FROM  ({sql}) __torque_wrap_sql ";

        var sql = format(sql_stats, {
          max_col: max_col,
          min_col: min_col,
          column: column_conv,
          sql: self.getSQL()
        });

        self.sql(sql, function(data) {
          //TODO: manage bounds
          data = data.rows[0];
          self.options.start = data.min_date;
          self.options.end = data.max_date;
          self.options.step = (data.max_date - data.min_date)/Math.min(self.options.steps, data.num_steps>>0);
          self.options.data_steps = data.num_steps >> 0;
          // step can't be 0
          self.options.step = self.options.step || 1;
          self.options.bounds = [
            [data.ymin, data.xmin],
            [data.ymax, data.xmax]
          ];
          self._setReady(true);
        }, { parseJSON: true, no_cdn: true });
      }, { parseJSON: true, no_cdn: true})
    }

  };

module.exports = json;

},{"../":11,"../profiler":22}],25:[function(require,module,exports){
var torque = require('../');
var Profiler = require('../profiler');

  var Uint8Array = torque.types.Uint8Array;
  var Int32Array = torque.types.Int32Array;
  var Uint32Array = torque.types.Uint32Array;

  // format('hello, {0}', 'rambo') -> "hello, rambo"
  function format(str, attrs) {
    for(var i = 1; i < arguments.length; ++i) {
      var attrs = arguments[i];
      for(var attr in attrs) {
        str = str.replace(RegExp('\\{' + attr + '\\}', 'g'), attrs[attr]);
      }
    }
    return str;
  }

  var json = function (options) {
    // check options
    this.options = options;
  };


  json.prototype = {

    //
    // return the data aggregated by key:
    // {
    //  key0: 12,
    //  key1: 32
    //  key2: 25
    // }
    //
    aggregateByKey: function(rows) {
      function getKeys(row) {
        var HEADER_SIZE = 3;
        var valuesCount = row.data[2];
        var keys = {};
        for (var s = 0; s < valuesCount; ++s) {
          keys[row.data[HEADER_SIZE + s]] = row.data[HEADER_SIZE + valuesCount + s];
        }
        return keys;
      }
      var keys = {};
      for (r = 0; r < rows.length; ++r) {
        var rowKeys = getKeys(rows[r]);
        for(var k in rowKeys) {
          keys[k] = keys[k] || 0;
          keys[k] += rowKeys[k];
        }
      }
      return keys;
    },
    



    /**
     *
     */
    proccessTile: function(rows, coord, zoom) {
      var r;
      var x = new Uint8Array(rows.length);
      var y = new Uint8Array(rows.length);
      var self = this;

      // decode into a javascript strcuture the array
      function decode_row(row) {
        var HEADER_SIZE = 3;
        var o = {
          x: row.data[0] * self.options.resolution,
          y: row.data[1] * self.options.resolution,
          valuesCount: row.data[2],
          times: [],
          values: []
        };
        for (var s = 0; s < o.valuesCount; ++s) {
           o.times.push(row.data[HEADER_SIZE + s]);
           o.values.push(row.data[HEADER_SIZE + o.valuesCount + s]);
        }
        if(self.options.cumulative) {
          for (var s = 1; s < o.valuesCount; ++s) {
           o.values[s] += o.values[s - 1];
          }
        }
        return o
      }

      // decode all the rows
      for (r = 0; r < rows.length; ++r) {
        rows[r] = decode_row(rows[r]);
      }

      // count number of dates
      var dates = 0;
      var maxDateSlots = 0;
      for (r = 0; r < rows.length; ++r) {
        var row = rows[r];
        dates += row.times.length;
        for(var d = 0; d < row.times.length; ++d) {
          maxDateSlots = Math.max(maxDateSlots, row.times[d]);
        }
      }

      // reserve memory for all the dates
      var timeIndex = new Int32Array(maxDateSlots + 1); //index-size
      var timeCount = new Int32Array(maxDateSlots + 1);
      var renderData = new (this.options.valueDataType || Uint8Array)(dates);
      var renderDataPos = new Uint32Array(dates);

      var rowsPerSlot = {};

      // precache pixel positions
      for (var r = 0; r < rows.length; ++r) {
        var row = rows[r];
        x[r] = row.x;
        y[r] = row.y;

        var dates = row.times;
        var vals = row.values;
        for (var j = 0, len = dates.length; j < len; ++j) {
            var rr = rowsPerSlot[dates[j]] || (rowsPerSlot[dates[j]] = []);
            rr.push([r, vals[j]]);
        }
      }

      // for each timeslot search active buckets
      var renderDataIndex = 0;
      var timeSlotIndex = 0;
      var i = 0;
      for(var i = 0; i <= maxDateSlots; ++i) {
        var c = 0;
        var slotRows = rowsPerSlot[i]
        if(slotRows) {
          for (var r = 0; r < slotRows.length; ++r) {
            var rr = slotRows[r];
            ++c;
            renderDataPos[renderDataIndex] = rr[0]
            renderData[renderDataIndex] = rr[1];
            ++renderDataIndex;
          }
        }
        timeIndex[i] = timeSlotIndex;
        timeCount[i] = c;
        timeSlotIndex += c;
      }

      return {
        x: x,
        y: y,
        coord: {
          x: coord.x,
          y: coord.y,
          z: zoom
        },
        timeCount: timeCount,
        timeIndex: timeIndex,
        renderDataPos: renderDataPos,
        renderData: renderData
      };
    },

    url: function() {
      return this.options.url;
    },


    tileUrl: function(coord, zoom) {
      var template = this.url();
      var s = (this.options.subdomains || 'abcd')[(coord.x + coord.y + zoom) % 4];
      return template
        .replace('{x}', coord.x)
        .replace('{y}', coord.y)
        .replace('{z}', zoom)
        .replace('{s}', s);
    },

    getTile: function(coord, zoom, callback) {
      var template = this.tileUrl(coord, zoom);

      var self = this;
      var fetchTime = Profiler.metric('jsonarray:fetch time');
      fetchTime.start();
      torque.net.get(template, function (data) {
        fetchTime.end();
        if(data) {
          data = JSON.parse(data.responseText);
        }
        callback(data);
      });
    },

    /**
     * `coord` object like {x : tilex, y: tiley } 
     * `zoom` quadtree zoom level
     */
    getTileData: function(coord, zoom, callback) {
      var template = this.tileUrl(coord, zoom);

      var self = this;
      var fetchTime = Profiler.metric('jsonarray:fetch time');
      fetchTime.start();
      torque.net.get(template, function (data) {
        fetchTime.end();
        var processed = null;
        
        var processingTime = Profiler.metric('jsonarray:processing time');
        var parsingTime = Profiler.metric('jsonarray:parsing time');
        try {
          processingTime.start();
          parsingTime.start();
          var rows = JSON.parse(data.responseText || data.response).rows;
          parsingTime.end();
          processed = self.proccessTile(rows, coord, zoom);
          processingTime.end();
        } catch(e) {
          console.error("problem parsing JSON on ", coord, zoom);
        }

        callback(processed);

      });
    }

  };

  module.exports = json;

},{"../":11,"../profiler":22}],26:[function(require,module,exports){
  var torque = require('../');

  var Uint8Array = torque.types.Uint8Array;
  var Int32Array = torque.types.Int32Array;
  var Uint32Array = torque.types.Uint32Array;
  var Uint8ClampedArray = torque.types.Uint8ClampedArray;

  // format('hello, {0}', 'rambo') -> "hello, rambo"
  function format(str) {
    for(var i = 1; i < arguments.length; ++i) {
      var attrs = arguments[i];
      for(var attr in attrs) {
        str = str.replace(RegExp('\\{' + attr + '\\}', 'g'), attrs[attr]);
      }
    }
    return str;
  }

  var tileJSON = function (options) {
    this._ready = false;
    this._tileQueue = [];
    this.options = options;

    this.options.coordinates_data_type = this.options.coordinates_data_type || Uint8Array;

    if (this.options.data_aggregation) {
      this.options.cumulative = this.options.data_aggregation === 'cumulative';
    }
    if (this.options.auth_token) {
      var e = this.options.extra_params || (this.options.extra_params = {});
      e.auth_token = this.options.auth_token;
    }
    if (!this.options.no_fetch_map) {
      this._fetchMap();
    }
  };

  tileJSON.prototype = {

    NAME: "tileJSON",

    /**
     * return the torque tile encoded in an efficient javascript
     * structure:
     * {
     *   x:Uint8Array x coordinates in tile reference system, normally from 0-255
     *   y:Uint8Array y coordinates in tile reference system
     *   Index: Array index to the properties
     * }
     */
    proccessTile: function(rows, coord, zoom) {
      var r;
      var x = new this.options.coordinates_data_type(rows.length);
      var y = new this.options.coordinates_data_type(rows.length);

      // count number of dates
      var dates = 0;
      var maxDateSlots = -1;
      for (r = 0; r < rows.length; ++r) {
        var row = rows[r];
        dates += row.dates__uint16.length;
        for(var d = 0; d < row.dates__uint16.length; ++d) {
          maxDateSlots = Math.max(maxDateSlots, row.dates__uint16[d]);
        }
      }

      if(this.options.cumulative) {
        dates = (1 + maxDateSlots) * rows.length;
      }

      var type = this.options.cumulative ? Uint32Array: Uint8ClampedArray;

      // reserve memory for all the dates
      var timeIndex = new Int32Array(maxDateSlots + 1); //index-size
      var timeCount = new Int32Array(maxDateSlots + 1);
      var renderData = new (this.options.valueDataType || type)(dates);
      var renderDataPos = new Uint32Array(dates);

      var rowsPerSlot = {};

      // precache pixel positions
      for (var r = 0; r < rows.length; ++r) {
        var row = rows[r];
        x[r] = row.x__uint8 * this.options.resolution;
        y[r] = row.y__uint8 * this.options.resolution;

        var dates = row.dates__uint16;
        var vals = row.vals__uint8;
        if (!this.options.cumulative) {
          for (var j = 0, len = dates.length; j < len; ++j) {
              var rr = rowsPerSlot[dates[j]] || (rowsPerSlot[dates[j]] = []);
              if(this.options.cumulative) {
                  vals[j] += prev_val;
              }
              prev_val = vals[j];
              rr.push([r, vals[j]]);
          }
        } else {
          var valByDate = {}
          for (var j = 0, len = dates.length; j < len; ++j) {
            valByDate[dates[j]] = vals[j];
          }
          var accum = 0;

          // extend the latest to the end
          for (var j = dates[0]; j <= maxDateSlots; ++j) {
              var rr = rowsPerSlot[j] || (rowsPerSlot[j] = []);
              var v = valByDate[j];
              if (v) {
                accum += v;
              }
              rr.push([r, accum]);
          }
        }
      }

      // for each timeslot search active buckets
      var renderDataIndex = 0;
      var timeSlotIndex = 0;
      var i = 0;
      for(var i = 0; i <= maxDateSlots; ++i) {
        var c = 0;
        var slotRows = rowsPerSlot[i]
        if(slotRows) {
          for (var r = 0; r < slotRows.length; ++r) {
            var rr = slotRows[r];
            ++c;
            renderDataPos[renderDataIndex] = rr[0]
            renderData[renderDataIndex] = rr[1];
            ++renderDataIndex;
          }
        }
        timeIndex[i] = timeSlotIndex;
        timeCount[i] = c;
        timeSlotIndex += c;
      }

      return {
        x: x,
        y: y,
        z: zoom,
        coord: {
          x: coord.x,
          y: coord.y,
          z: zoom
        },
        timeCount: timeCount,
        timeIndex: timeIndex,
        renderDataPos: renderDataPos,
        renderData: renderData,
        maxDate: maxDateSlots
      };
    },

    setSteps: function(steps, opt) { 
      opt = opt || {};
      if (this.options.steps !== steps) {
        this.options.steps = steps;
        this.options.step = (this.options.end - this.options.start)/this.getSteps();
        this.options.step = this.options.step || 1;
        if (!opt.silent) this.reload();
      }
    },

    setOptions: function(opt) {
      var refresh = false;

      if(opt.resolution !== undefined && opt.resolution !== this.options.resolution) {
        this.options.resolution = opt.resolution;
        refresh = true;
      }

      if(opt.steps !== undefined && opt.steps !== this.options.steps) {
        this.setSteps(opt.steps, { silent: true });
        refresh = true;
      }

      if(opt.column !== undefined && opt.column !== this.options.column) {
        this.options.column = opt.column;
        refresh = true;
      }

      if(opt.countby !== undefined && opt.countby !== this.options.countby) {
        this.options.countby = opt.countby;
        refresh = true;
      }

      if(opt.data_aggregation !== undefined) {
        var c = opt.data_aggregation === 'cumulative';
        if (this.options.cumulative !== c) {
          this.options.cumulative = c;
          refresh = true;
        }
      }

      if (refresh) this.reload();
      return refresh;
    },

    _extraParams: function(e) {
      e = torque.extend(torque.extend({}, e), this.options.extra_params);
      if (e) {
        var p = [];
        for(var k in e) {
          var v = e[k];
          if (v) {
            if (torque.isArray(v)) {
              for (var i = 0, len = v.length; i < len; i++) {
                p.push(k + "[]=" + encodeURIComponent(v[i]));
              }
            } else {
              p.push(k + "=" + encodeURIComponent(v));
            }
          }
        }
        return p.join('&');
      }
      return null;
    },

    getTileData: function(coord, zoom, callback) {
      if(!this._ready) {
        this._tileQueue.push([coord, zoom, callback]);
      } else {
        this._getTileData(coord, zoom, callback);
      }
    },

    _setReady: function(ready) {
      this._ready = true;
      this._processQueue();
      this.options.ready && this.options.ready();
    },

    _processQueue: function() {
      var item;
      while (item = this._tileQueue.pop()) {
        this._getTileData.apply(this, item);
      }
    },

    /**
     * `coord` object like {x : tilex, y: tiley }
     * `zoom` quadtree zoom level
     */
    _getTileData: function(coord, zoom, callback) {
      var self = this;
      var subdomains = this.options.subdomains || '0123';
      var limit_x = Math.pow(2, zoom);
      var corrected_x = ((coord.x % limit_x) + limit_x) % limit_x;
      var index = Math.abs(corrected_x + coord.y) % subdomains.length;
      var extra = this._extraParams();
      var url = this.templateUrl
                .replace('{x}', corrected_x)
                .replace('{y}', coord.y)
                .replace('{z}', zoom)
                .replace('{s}', subdomains[index])
      url += extra;
      torque.net.get( url , function (data) {
        if (data && data.responseText) {
          var rows = JSON.parse(data.responseText);
          callback(self.proccessTile(rows, coord, zoom));
        } else {
          callback(null);
        }
      });
    },

    getKeySpan: function() {
      return {
        start: this.options.start,
        end: this.options.end,
        step: this.options.step,
        steps: this.options.steps,
        columnType: this.options.column_type
      };
    },

    setColumn: function(column, isTime) {
      this.options.column = column;
      this.options.is_time = isTime === undefined ? true: false;
      this.reload();
    },

    reload: function() {
      this._ready = false;
      this._fetchMap();
    },

    getSteps: function() {
      return Math.min(this.options.steps, this.options.data_steps);
    },

    getBounds: function() {
      return this.options.bounds;
    },

    getSQL: function() {
      return this.options.sql || "select * from " + this.options.table;
    },

    setSQL: function(sql) {
      if (this.options.sql != sql) {
        this.options.sql = sql;
        this.reload();
      }
    },

    _isUserTemplateUrl: function(t) {
      return t && t.indexOf('{user}') !== -1;
    },

    isHttps: function() {
      return this.options.maps_api_template.indexOf('https') === 0;
    },

    _fetchMap: function(callback) {
      var self = this;
      torque.net.get(this.options.tileJSON, function (data) {
        data = JSON.parse(data.response);
        if (data) {
          if (data.errors){
            self.options.errorCallback && self.options.errorCallback(data.errors);
            return;
          }
          for(var k in data) {
            self.options[k] = data[k];
          }
          self.templateUrl = data.tiles[0];
          if (self.templateUrl.indexOf("http") !== 0){
            self.templateUrl = self.options.tileJSON.substring(0, self.options.tileJSON.lastIndexOf("/") + 1) + self.templateUrl;
          }
          self._setReady(true);
        }
      });
    }
  };

  module.exports = tileJSON;
},{"../":11}],27:[function(require,module,exports){
  var torque = require('../');
  var Profiler = require('../profiler');

  var Uint8Array = torque.types.Uint8Array;
  var Int32Array = torque.types.Int32Array;
  var Uint32Array = torque.types.Uint32Array;
  var Uint8ClampedArray = torque.types.Uint8ClampedArray;

  // format('hello, {0}', 'rambo') -> "hello, rambo"
  function format(str) {
    for(var i = 1; i < arguments.length; ++i) {
      var attrs = arguments[i];
      for(var attr in attrs) {
        str = str.replace(RegExp('\\{' + attr + '\\}', 'g'), attrs[attr]);
      }
    }
    return str;
  }

  var windshaft = function (options) {
    this._ready = false;
    this._tileQueue = [];
    this.options = options;

    this.options.is_time = this.options.is_time === undefined ? true: this.options.is_time;
    this.options.tiler_protocol = options.tiler_protocol || 'http';
    this.options.tiler_domain = options.tiler_domain || 'cartodb.com';
    this.options.tiler_port = options.tiler_port || 80;

    // backwards compatible
    if (!options.maps_api_template) {
      this._buildMapsApiTemplate(this.options);
    } else {
      this.options.maps_api_template =  options.maps_api_template;
    }

    this.options.coordinates_data_type = this.options.coordinates_data_type || Uint8Array;

    if (this.options.data_aggregation) {
      this.options.cumulative = this.options.data_aggregation === 'cumulative';
    }
    if (this.options.auth_token) {
      var e = this.options.extra_params || (this.options.extra_params = {});
      e.auth_token = this.options.auth_token;
    }
    if (!this.options.no_fetch_map) {
      this._fetchMap();
    }
  };

  windshaft.prototype = {

    /**
     * return the torque tile encoded in an efficient javascript
     * structure:
     * {
     *   x:Uint8Array x coordinates in tile reference system, normally from 0-255
     *   y:Uint8Array y coordinates in tile reference system
     *   Index: Array index to the properties
     * }
     */
    proccessTile: function(rows, coord, zoom) {
      var r;
      var x = new this.options.coordinates_data_type(rows.length);
      var y = new this.options.coordinates_data_type(rows.length);

      var prof_mem = Profiler.metric('torque.provider.windshaft.mem');
      var prof_point_count = Profiler.metric('torque.provider.windshaft.points');
      var prof_process_time = Profiler.metric('torque.provider.windshaft.process_time').start();

      // count number of dates
      var dates = 0;
      var maxDateSlots = -1;
      for (r = 0; r < rows.length; ++r) {
        var row = rows[r];
        dates += row.dates__uint16.length;
        for(var d = 0; d < row.dates__uint16.length; ++d) {
          maxDateSlots = Math.max(maxDateSlots, row.dates__uint16[d]);
        }
      }

      if(this.options.cumulative) {
        dates = (1 + maxDateSlots) * rows.length;
      }

      var type = this.options.cumulative ? Uint32Array: Uint8ClampedArray;

      // reserve memory for all the dates
      var timeIndex = new Int32Array(maxDateSlots + 1); //index-size
      var timeCount = new Int32Array(maxDateSlots + 1);
      var renderData = new (this.options.valueDataType || type)(dates);
      var renderDataPos = new Uint32Array(dates);

      prof_mem.inc(
        4 * maxDateSlots + // timeIndex
        4 * maxDateSlots + // timeCount
        dates + //renderData
        dates * 4
      ); //renderDataPos

      prof_point_count.inc(rows.length);

      var rowsPerSlot = {};

      // precache pixel positions
      for (var r = 0; r < rows.length; ++r) {
        var row = rows[r];
        x[r] = row.x__uint8 * this.options.resolution;
        y[r] = row.y__uint8 * this.options.resolution;

        var dates = row.dates__uint16;
        var vals = row.vals__uint8;
        if (!this.options.cumulative) {
          for (var j = 0, len = dates.length; j < len; ++j) {
              var rr = rowsPerSlot[dates[j]] || (rowsPerSlot[dates[j]] = []);
              if(this.options.cumulative) {
                  vals[j] += prev_val;
              }
              prev_val = vals[j];
              rr.push([r, vals[j]]);
          }
        } else {
          var valByDate = {}
          for (var j = 0, len = dates.length; j < len; ++j) {
            valByDate[dates[j]] = vals[j];
          }
          var accum = 0;

          // extend the latest to the end
          for (var j = dates[0]; j <= maxDateSlots; ++j) {
              var rr = rowsPerSlot[j] || (rowsPerSlot[j] = []);
              var v = valByDate[j];
              if (v) {
                accum += v;
              }
              rr.push([r, accum]);
          }

          /*var lastDateSlot = dates[dates.length - 1];
          for (var j = lastDateSlot + 1; j <= maxDateSlots; ++j) {
            var rr = rowsPerSlot[j] || (rowsPerSlot[j] = []);
            rr.push([r, prev_val]);
          }
          */
        }

      }

      // for each timeslot search active buckets
      var renderDataIndex = 0;
      var timeSlotIndex = 0;
      var i = 0;
      for(var i = 0; i <= maxDateSlots; ++i) {
        var c = 0;
        var slotRows = rowsPerSlot[i]
        if(slotRows) {
          for (var r = 0; r < slotRows.length; ++r) {
            var rr = slotRows[r];
            ++c;
            renderDataPos[renderDataIndex] = rr[0]
            renderData[renderDataIndex] = rr[1];
            ++renderDataIndex;
          }
        }
        timeIndex[i] = timeSlotIndex;
        timeCount[i] = c;
        timeSlotIndex += c;
      }

      prof_process_time.end();

      return {
        x: x,
        y: y,
        z: zoom,
        coord: {
          x: coord.x,
          y: coord.y,
          z: zoom
        },
        timeCount: timeCount,
        timeIndex: timeIndex,
        renderDataPos: renderDataPos,
        renderData: renderData,
        maxDate: maxDateSlots
      };
    },

    /*setCartoCSS: function(c) {
      this.options.cartocss = c;
    },*/

    setSteps: function(steps, opt) { 
      opt = opt || {};
      if (this.options.steps !== steps) {
        this.options.steps = steps;
        this.options.step = (this.options.end - this.options.start)/this.getSteps();
        this.options.step = this.options.step || 1;
        if (!opt.silent) this.reload();
      }
    },

    setOptions: function(opt) {
      var refresh = false;

      if(opt.resolution !== undefined && opt.resolution !== this.options.resolution) {
        this.options.resolution = opt.resolution;
        refresh = true;
      }

      if(opt.steps !== undefined && opt.steps !== this.options.steps) {
        this.setSteps(opt.steps, { silent: true });
        refresh = true;
      }

      if(opt.column !== undefined && opt.column !== this.options.column) {
        this.options.column = opt.column;
        refresh = true;
      }

      if(opt.countby !== undefined && opt.countby !== this.options.countby) {
        this.options.countby = opt.countby;
        refresh = true;
      }

      if(opt.data_aggregation !== undefined) {
        var c = opt.data_aggregation === 'cumulative';
        if (this.options.cumulative !== c) {
          this.options.cumulative = c;
          refresh = true;
        }
      }

      if (refresh) this.reload();
      return refresh;
    },

    _extraParams: function(e) {
      e = torque.extend(torque.extend({}, e), this.options.extra_params);
      if (e) {
        var p = [];
        for(var k in e) {
          var v = e[k];
          if (v) {
            if (torque.isArray(v)) {
              for (var i = 0, len = v.length; i < len; i++) {
                p.push(k + "[]=" + encodeURIComponent(v[i]));
              }
            } else {
              p.push(k + "=" + encodeURIComponent(v));
            }
          }
        }
        return p.join('&');
      }
      return null;
    },

    getTileData: function(coord, zoom, callback) {
      if(!this._ready) {
        this._tileQueue.push([coord, zoom, callback]);
      } else {
        this._getTileData(coord, zoom, callback);
      }
    },

    _setReady: function(ready) {
      this._ready = true;
      this._processQueue();
      this.options.ready && this.options.ready();
    },

    _processQueue: function() {
      var item;
      while (item = this._tileQueue.pop()) {
        this._getTileData.apply(this, item);
      }
    },

    /**
     * `coord` object like {x : tilex, y: tiley }
     * `zoom` quadtree zoom level
     */
    _getTileData: function(coord, zoom, callback) {
      var self = this;
      var prof_fetch_time = Profiler.metric('torque.provider.windshaft.tile.fetch').start();
      var subdomains = this.options.subdomains || '0123';
      var limit_x = Math.pow(2, zoom);
      var corrected_x = ((coord.x % limit_x) + limit_x) % limit_x;
      var index = Math.abs(corrected_x + coord.y) % subdomains.length;
      var url = this.templateUrl
                .replace('{x}', corrected_x)
                .replace('{y}', coord.y)
                .replace('{z}', zoom)
                .replace('{s}', subdomains[index])

      var extra = this._extraParams();
      torque.net.get( url + (extra ? "?" + extra: ''), function (data) {
        prof_fetch_time.end();
        if (data && data.responseText) {
          var rows = JSON.parse(data.responseText);
          callback(self.proccessTile(rows, coord, zoom));
        } else {
          Profiler.metric('torque.provider.windshaft.tile.error').inc();
          callback(null);
        }
      });
    },

    getKeySpan: function() {
      return {
        start: this.options.start,
        end: this.options.end,
        step: this.options.step,
        steps: this.options.steps,
        columnType: this.options.column_type
      };
    },

    setColumn: function(column, isTime) {
      this.options.column = column;
      this.options.is_time = isTime === undefined ? true: false;
      this.reload();
    },

    reload: function() {
      this._ready = false;
      this._fetchMap();
    },

    getSteps: function() {
      return Math.min(this.options.steps, this.options.data_steps);
    },

    getBounds: function() {
      return this.options.bounds;
    },

    getSQL: function() {
      return this.options.sql || "select * from " + this.options.table;
    },

    setSQL: function(sql) {
      if (this.options.sql != sql) {
        this.options.sql = sql;
        this.reload();
      }
    },

    _buildMapsApiTemplate: function(opts) {
       var user = opts.user_name || opts.user;
       opts.maps_api_template = opts.tiler_protocol +
           "://" + ((user) ? "{user}.":"")  +
           opts.tiler_domain +
           ((opts.tiler_port != "") ? (":" + opts.tiler_port) : "");
    },

    _tilerHost: function() {
      var opts = this.options;
      var user = opts.user_name || opts.user;
      return opts.maps_api_template.replace('{user}', user);
    },

    url: function () {
      var opts = this.options;
      var cdn_host = opts.cdn_url;
      var has_empty_cdn = !cdn_host || (cdn_host && (!cdn_host.http && !cdn_host.https));

      if (opts.no_cdn || has_empty_cdn) {
        return this._tilerHost();
      } else {
        var protocol = this.isHttps() ? 'https': 'http';
        var h = protocol + "://";
        if (!this.isHttps()) {
          h += "{s}.";
        }
        var cdn_url = cdn_host[protocol];
        // build default template url if the cdn url is not templatized
        // this is for backwards compatiblity, ideally we should use the url
        // that tiler sends to us right away
        if (!this._isUserTemplateUrl(cdn_url)) {
          cdn_url = cdn_url  + "/{user}";
        }
        var user = opts.user_name || opts.user;
        h += cdn_url.replace('{user}', user)
        return h;
      }

    },

    _isUserTemplateUrl: function(t) {
      return t && t.indexOf('{user}') !== -1;
    },

    isHttps: function() {
      return this.options.maps_api_template.indexOf('https') === 0;
    },

    _generateCartoCSS: function() {
      var attr = {
        '-torque-frame-count': this.options.steps,
        '-torque-resolution': this.options.resolution,
        '-torque-aggregation-function': "'" + this.options.countby + "'",
        '-torque-time-attribute': "'" + this.options.column + "'",
        '-torque-data-aggregation': this.options.cumulative ? 'cumulative': 'linear',
      };
      var st = 'Map{';
      for (var k in attr) {
        st += k + ":" + attr[k] + ";";
      }
      return st + "}";
    },

    _fetchMap: function(callback) {
      var self = this;
      var layergroup = {};
      var host = this.options.dynamic_cdn ? this.url().replace('{s}', '0'): this._tilerHost();
      var url = host + "/api/v1/map";
      var named = this.options.named_map;
      var allParams = {};

      if(named) {
        //tiles/template
        url = host + "/api/v1/map/named/" + named.name + "/jsonp";
        if(typeof named.params !== "undefined"){
          layergroup = named.params;
        }
      } else {
        layergroup = {
          "version": "1.0.1",
          "stat_tag": this.options.stat_tag || 'torque',
          "layers": [{
            "type": "torque",
            "options": {
              "cartocss_version": "1.0.0",
              "cartocss": this._generateCartoCSS(),
              "sql": this.getSQL()
            }
          }]
        };
      }
      
      if(this.options.stat_tag){
        allParams["stat_tag"] = this.options.stat_tag;
      }

      extra = this._extraParams(allParams);

      // tiler needs map_key instead of api_key
      // so replace it
      if (extra) {
        extra = extra.replace('api_key=', 'map_key=');
      }

      url = url +
        "?config=" + encodeURIComponent(JSON.stringify(layergroup)) +
        "&callback=?" + (extra ? "&" + extra: '');

      var map_instance_time = Profiler.metric('torque.provider.windshaft.layergroup.time').start();
      torque.net.jsonp(url, function (data) {
        map_instance_time.end();
        if (data) {
          if (data.errors){
            self.options.errorCallback && self.options.errorCallback(data.errors);
            return;
          }
          var torque_key = Object.keys(data.metadata.torque)[0]
          var opt = data.metadata.torque[torque_key];
          for(var k in opt) {
            self.options[k] = opt[k];
          }
          // use cdn_url if present
          if (data.cdn_url) {
            var c = self.options.cdn_url = self.options.cdn_url || {};
            c.http = data.cdn_url.http || c.http;
            c.https = data.cdn_url.https || c.https;
          }
          self.templateUrl = self.url() + "/api/v1/map/" + data.layergroupid + "/" + torque_key + "/{z}/{x}/{y}.json.torque";
          self._setReady(true);
        } else {
          Profiler.metric('torque.provider.windshaft.layergroup.error').inc();
        }
      }, { callbackName: self.options.instanciateCallback });
    }

  };

  module.exports = windshaft;

},{"../":11,"../profiler":22}],28:[function(require,module,exports){
  var TAU = Math.PI*2;
  // min value to render a line. 
  // it does not make sense to render a line of a width is not even visible
  var LINEWIDTH_MIN_VALUE = 0.05; 
  var MAX_SPRITE_RADIUS = 255;

  function renderPoint(ctx, st) {
    ctx.fillStyle = st['marker-fill'];
    var pixel_size = st['marker-width'];

    // render a circle
    // TODO: fill and stroke order should depend on the order of the properties
    // in the cartocss.

    // fill
    ctx.beginPath();
    ctx.arc(0, 0, pixel_size, 0, TAU, true, true);
    ctx.closePath();

    if (st['marker-opacity'] !== undefined )  st['marker-fill-opacity'] = st['marker-line-opacity'] = st['marker-opacity'];

    if (st['marker-fill']) {
        ctx.globalAlpha = st['marker-fill-opacity'] >= 0? st['marker-fill-opacity']: 1;

      if (ctx.globalAlpha > 0) {
        ctx.fill();
      }
    }

    // stroke
    if (st['marker-line-color'] && st['marker-line-width'] && st['marker-line-width'] > LINEWIDTH_MIN_VALUE) {
      ctx.globalAlpha = st['marker-line-opacity'] >= 0? st['marker-line-opacity']: 1;
      if (st['marker-line-width'] !== undefined) {
        ctx.lineWidth = st['marker-line-width'];
      }
      ctx.strokeStyle = st['marker-line-color'];

      // do not render for alpha = 0
      if (ctx.globalAlpha > 0) {
        ctx.stroke();
      }
    }
  }

  function renderRectangle(ctx, st) {
    ctx.fillStyle = st['marker-fill'];
    var pixel_size = st['marker-width'];
    var w = pixel_size * 2;

    // fill
    if (st['marker-fill']) {
      if (st['marker-fill-opacity'] !== undefined || st['marker-opacity'] !== undefined) {
        ctx.globalAlpha = st['marker-fill-opacity'] || st['marker-opacity'];
      }
      ctx.fillRect(-pixel_size, -pixel_size, w, w)
    }

    // stroke
    ctx.globalAlpha = 1.0;
    if (st['marker-line-color'] && st['marker-line-width']) {
      if (st['marker-line-opacity']) {
        ctx.globalAlpha = st['marker-line-opacity'];
      }
      if (st['marker-line-width']) {
        ctx.lineWidth = st['marker-line-width'];
      }
      ctx.strokeStyle = st['marker-line-color'];

      // do not render for alpha = 0
      if (ctx.globalAlpha > 0) {
        ctx.strokeRect(-pixel_size, -pixel_size, w, w)
      }
    }
  }

  function renderSprite(ctx, img, st) {

    if(img.complete){
      if (st['marker-fill-opacity'] !== undefined || st['marker-opacity'] !== undefined) {
        ctx.globalAlpha = st['marker-fill-opacity'] || st['marker-opacity'];
      }
      ctx.drawImage(img, 0, 0, Math.min(img.width, MAX_SPRITE_RADIUS), Math.min(img.height, MAX_SPRITE_RADIUS));
    }
  }

module.exports = {
    renderPoint: renderPoint,
    renderSprite: renderSprite,
    renderRectangle: renderRectangle,
    MAX_SPRITE_RADIUS: MAX_SPRITE_RADIUS
};

},{}],29:[function(require,module,exports){
var d3 = require('d3');
var jenks = require('turf-jenks');

function TorqueDataSource (tiles) {
  this.tiles = tiles
}

module.exports = TorqueDataSource

TorqueDataSource.prototype.getName = function () {
  return 'TorqueDataSource'
}

TorqueDataSource.prototype.getRamp = function (column, bins, method, callback) {
  var ramp = []
  var error = null
  var values = Object.keys(this.tiles).map(function (t) {
    return this.tiles[t].renderData;
  }.bind(this)).reduce(function (p,c,i) {
    for(var i = 0; i<c.length; i++) {
      p.push(c[i]);
    }
    return p;
  },[]);
  var extent = d3.extent(values);
  if (!method || method === 'equal' || method === 'jenks') {
    var scale = d3.scale.linear().domain([0, bins]).range(extent)
    ramp = d3.range(bins).map(scale)
  } else if (method === 'quantiles') {
    ramp = d3.scale.quantile().range(d3.range(bins)).domain(values).quantiles()
  } else if (method === 'headstails') {
    var sortedValues = values.sort(function(a, b) {
      return a - b;
    });
    if (sortedValues.length < bins) {
      error = 'Number of bins should be lower than total number of rows'
    } else if (sortedValues.length === bins) {
      ramp = sortedValues;
    } else {
      var mean = d3.mean(sortedValues);
      ramp.push(mean);
      for (var i = 1; i < bins; i++) {
        ramp.push(d3.mean(sortedValues.filter(function (v) {
          return v > ramp[length - 1];
        })));
      }
    }
  } else {
    error = new Error('Quantification method ' + method + ' is not supported')
  }
  callback(error, ramp)
}
},{"d3":undefined,"turf-jenks":undefined}],30:[function(require,module,exports){
module.exports = {
    cartocss: require('./cartocss_render'),
    Point: require('./point'),
    Rectangle: require('./rectangle')
};
},{"./cartocss_render":28,"./point":31,"./rectangle":32}],31:[function(require,module,exports){
(function (global){
var torque = require('../');
var cartocss = require('./cartocss_render');
var Profiler = require('../profiler');
var carto = global.carto || require('carto');
var Filters = require('./torque_filters');
var turbocarto = require('turbo-carto');
var CartoDatasource = require('./datasource');

  var TAU = Math.PI * 2;
  var DEFAULT_CARTOCSS = [
    '#layer {',
    '  marker-fill: #662506;',
    '  marker-width: 4;',
    '  [value > 1] { marker-fill: #FEE391; }',
    '  [value > 2] { marker-fill: #FEC44F; }',
    '  [value > 3] { marker-fill: #FE9929; }',
    '  [value > 4] { marker-fill: #EC7014; }',
    '  [value > 5] { marker-fill: #CC4C02; }',
    '  [value > 6] { marker-fill: #993404; }',
    '  [value > 7] { marker-fill: #662506; }',
    '}'
  ].join('\n');

  var COMP_OP_TO_CANVAS = {
    "difference": "difference",
    "src": 'source-over',
    "exclusion": "exclusion",
    "dst": "destination-in",
    "multiply": "multiply",
    "contrast": "contrast",
    "src-over": 'source-over',
    "screen": "screen",
    "invert": "invert",
    "dst-over": 'destination-over',
    "overlay": "overlay",
    "invert-rgb": "invert",
    "src-in": 'source-in',
    "darken": 'darken',
    "dst-in": 'destination-in',
    "lighten": 'lighten',
    "src-out": 'source-out',
    "color-dodge": "color-dodge",
    "hue":"hue",
    "dst-out": 'destination-out',
    "color-burn":"color-burn",
    "saturation":"saturation",
    "src-atop": 'source-atop',
    "hard-light":"hard-light",
    "color":"color",
    "dst-atop": 'destination-atop',
    "soft-light":"soft-light",
    "xor": 'xor'
  }

  function compop2canvas(compop) {
    return COMP_OP_TO_CANVAS[compop] || compop;
  }

  //
  // this renderer just render points depending of the value
  //
  function PointRenderer(canvas, options) {
    if (!canvas) {
      throw new Error("canvas can't be undefined");
    }
    this.options = options;
    this.layer = options.layer;
    this._canvas = canvas;
    this._ctx = canvas.getContext('2d');
    this._sprites = []; // sprites per layer
    this._shader = null;
    this._icons = {};
    this._iconsToLoad = 0;
    this._filters = new Filters(this._canvas, {canvasClass: options.canvasClass});
    this.style = this.options.cartocss || DEFAULT_CARTOCSS;
    this.setCartoCSS(this.style);
    this.TILE_SIZE = 256;
    this._style = null;
    this._gradients = {};

    this._forcePoints = false;
  }

  torque.extend(PointRenderer.prototype, torque.Event, {

    clearCanvas: function() {
      if (this._Map) {
        var canvas = this._canvas;
        var color = this._Map['-torque-clear-color']
        // shortcut for the default value
        var ctx = this._ctx;
        if (color  === "rgba(255, 255, 255, 0)" || !color) {
          ctx.save();
          ctx.setTransform(1, 0, 0, 1, 0, 0);
          ctx.clearRect(0, 0, canvas.width, canvas.height);
          ctx.restore();
        } else {
          ctx.setTransform(1, 0, 0, 1, 0, 0);
          var compop = this._Map['comp-op']
          ctx.globalCompositeOperation = compop2canvas(compop) || compop;
          ctx.fillStyle = color;
          ctx.fillRect(0, 0, canvas.width, canvas.height);
        }
      }
    },

    setCanvas: function(canvas) {
      this._canvas = canvas;
      this._ctx = canvas.getContext('2d');
    },

    //
    // sets the cartocss style to render stuff
    //
    setCartoCSS: function(cartocss, callback) {
      var self = this;

      this.style = cartocss;

      if (PointRenderer.isTurboCarto(cartocss)) {
        var datasource = new CartoDatasource(self.layer._tiles);
        turbocarto(cartocss, datasource, function (err, parsedCartoCSS) {
          self.setShader(new carto.RendererJS().render(parsedCartoCSS));
          self.layer.redraw();
          self.layer.animator.start();
          callback && callback();
        });
      } else {
        self.setShader(new carto.RendererJS().render(cartocss));
        callback && callback();
      }
    },

    setShader: function(shader) {
      // clean sprites
      this._sprites = [];
      this._shader = shader;
      this._Map = this._shader.getDefault().getStyle({}, { zoom: 0 });
      var img_names = this._shader.getImageURLs();
      this._preloadIcons(img_names);
    },

    clearSpriteCache: function() {
      this._sprites = [];
    },


    //
    // generate sprite based on cartocss style
    //
    generateSprite: function(shader, value, shaderVars) {
      var self = this;
      var prof = Profiler.metric('torque.renderer.point.generateSprite').start();
      var st = shader.getStyle({
        value: value
      }, shaderVars);
      if(this._style === null || this._style !== st){
        this._style = st;
      }

      var pointSize = st['marker-width'];
      if (!pointSize) {
        return null;
      }

      if (st['marker-opacity'] === 0 && !st['marker-line-opacity']) {
        return null;
      }

      var canvas = this._createCanvas();
      var ctx = canvas.getContext('2d');

      var markerFile = st["marker-file"] || st["point-file"];
      var qualifiedUrl = markerFile && this._qualifyURL(markerFile);

      if (qualifiedUrl && this._iconsToLoad <= 0 && this._icons[qualifiedUrl]) {
        var img = this._icons[qualifiedUrl];

        var dWidth =  Math.min(st['marker-width'] * 2 || img.width, cartocss.MAX_SPRITE_RADIUS * 2);
        var dHeight = Math.min((st['marker-height'] || dWidth) * (img.width / img.height), cartocss.MAX_SPRITE_RADIUS * 2);

        canvas.width = ctx.width = dWidth;
        canvas.height = ctx.height = dHeight;

        ctx.scale(dWidth/img.width, dHeight/img.height);

        cartocss.renderSprite(ctx, img, st);
      } else {
        // take into account the exterior ring to calculate the size
        var canvasSize = (st['marker-line-width'] || 0) + pointSize*2;
        var w = ctx.width = canvas.width = ctx.height = canvas.height = Math.ceil(canvasSize);
        ctx.translate(w/2, w/2);

        var mt = st['marker-type'];
        if (mt && mt === 'rectangle') {
          cartocss.renderRectangle(ctx, st);
        } else {
          cartocss.renderPoint(ctx, st);
        }
      }
      prof.end(true);
      if (torque.flags.sprites_to_images) {
        var i = this._createImage();
        i.src = canvas.toDataURL();
        return i;
      }

      return canvas;
    },

    //
    // renders all the layers (and frames for each layer) from cartocss
    //
    renderTile: function(tile, keys, callback) {
      if (this._iconsToLoad > 0) {
          this.on('allIconsLoaded', function() {
              this.renderTile.apply(this, [tile, keys, callback]);
          });
          return false;
      }

      // convert scalar key to keys array
      if (typeof keys.length === 'undefined') {
        keys = [keys];
      }

      var prof = Profiler.metric('torque.renderer.point.renderLayers').start();
      var layers = this._shader.getLayers();
      for(var i = 0, n = layers.length; i < n; ++i ) {
        var layer = layers[i];
        if (layer.name() !== "Map") {
          var sprites = this._sprites[i] || (this._sprites[i] = {});
          // frames for each layer
          for(var fr = 0; fr < layer.frames().length; ++fr) {
            var frame = layer.frames()[fr];
            var fr_sprites = sprites[frame] || (sprites[frame] = []);
            for (var k = 0, len = keys.length; k < len; k++) {
              this._renderTile(tile, keys[k] - frame, frame, fr_sprites, layer);
            }
          }
        }
      }

      prof.end(true);

      return callback && callback(null);
    },

    _createCanvas: function() {
      return this.options.canvasClass
        ? new this.options.canvasClass()
        : document.createElement('canvas');
    },

    _createImage: function() {
      return this.options.imageClass
        ? new this.options.imageClass()
        : new Image();
    },

    _setImageSrc: function(img, url, callback) {
      if (this.options.setImageSrc) {
        this.options.setImageSrc(img, url, callback);
      } else {
        img.onload = function(){
            callback(null);
        };
        img.onerror = function(){
            callback(new Error('Could not load image'));
        };
        img.src = url;
      }
    },

    _qualifyURL: function(url) {
      if (typeof this.options.qualifyURL !== "undefined"){
        return this.options.qualifyURL(url);
      }
      else{
        var a = document.createElement('a');
        a.href = url;
        return a.href;
      }
    },

    //
    // renders a tile in the canvas for key defined in
    // the torque tile
    //
    _renderTile: function(tile, key, frame_offset, sprites, shader, shaderVars) {
      if (!this._canvas) return;

      var prof = Profiler.metric('torque.renderer.point.renderTile').start();
      var ctx = this._ctx;
      var blendMode = compop2canvas(shader.eval('comp-op')) || this.options.blendmode;
      if (blendMode) {
        ctx.globalCompositeOperation = blendMode;
      }
      if (this.options.cumulative && key > tile.maxDate) {
        //TODO: precache because this tile is not going to change
        key = tile.maxDate;
      }
      var tileMax = this.options.resolution * (this.TILE_SIZE/this.options.resolution - 1)
      var activePixels = tile.timeCount[key];
      var anchor = this.options.resolution/2;
      if (activePixels) {
        var pixelIndex = tile.timeIndex[key];
        for(var p = 0; p < activePixels; ++p) {
          var posIdx = tile.renderDataPos[pixelIndex + p];
          var c = tile.renderData[pixelIndex + p];
          if (c) {
           var sp = sprites[c];
           if (sp === undefined) {
             sp = sprites[c] = this.generateSprite(shader, c, torque.extend({ zoom: tile.z, 'frame-offset': frame_offset }, shaderVars));
           }
           if (sp) {
             var x = tile.x[posIdx]- (sp.width >> 1) + anchor;
             var y = tileMax - tile.y[posIdx] + anchor; // flip mercator
             ctx.drawImage(sp, x, y - (sp.height >> 1));
           }
          }
        }
      }


      prof.end(true);
    },

    setBlendMode: function(b) {
      this.options.blendmode = b;
    },

    /**
     * get active points for a step in active zoom
     * returns a list of bounding boxes [[sw, ne] , [], []] where ne is a {lat: .., lon: ...} obj
     * empty list if there is no active pixels
     */
    getActivePointsBBox: function(tile, step) {
      var positions = [];
      var mercator = new torque.Mercator();

      var tileMax = this.options.resolution * (this.TILE_SIZE/this.options.resolution - 1);
      //this.renderer.renderTile(tile, this.key, pos.x, pos.y);
      var activePixels = tile.timeCount[step];
      var pixelIndex = tile.timeIndex[step];
      for(var p = 0; p < activePixels; ++p) {
        var posIdx = tile.renderDataPos[pixelIndex + p];
        var c = tile.renderData[pixelIndex + p];
        if (c) {
         var x = tile.x[posIdx];
         var y = tileMax - tile.y[posIdx]; // flip mercator
         positions.push(mercator.tilePixelBBox(
           tile.coord.x,
           tile.coord.y,
           tile.coord.z,
           x, y
         ));
        }
      }
      return positions;
    },

    /**
     * returns an array with all the values for the active pixels
     * @tile tile object
     * @step integer with the step
     * @values (optional) an array where the values will be placed
     */
    getValues: function(tile, step, values) {
      values = values || [];
      var activePixels = tile.timeCount[step];
      var pixelIndex = tile.timeIndex[step];
      for(var p = 0; p < activePixels; ++p) {
        var posIdx = tile.renderDataPos[pixelIndex + p];
        values.push(tile.renderData[pixelIndex + p]);
      }
      return values;
    },

    // return the value for x, y (tile coordinates)
    // null for no value
    getValueFor: function(tile, step, px, py) {
      var mercator = new torque.Mercator();
      var res = this.options.resolution;
      var res2 = res >> 1;

      var tileMax = this.options.resolution * (this.TILE_SIZE/this.options.resolution - 1);
      //this.renderer.renderTile(tile, this.key, pos.x, pos.y);
      var activePixels = tile.timeCount[step];
      var pixelIndex = tile.timeIndex[step];
      for(var p = 0; p < activePixels; ++p) {
        var posIdx = tile.renderDataPos[pixelIndex + p];
        var c = tile.renderData[pixelIndex + p];
        if (c) {
         var x = tile.x[posIdx];
         var y = tileMax - tile.y[posIdx];
         var dx = px + res2 - x;
         var dy = py + res2 - y;
         if (dx >= 0 && dx < res && dy >= 0 && dy < res) {
           return {
             value: c,
             bbox: mercator.tilePixelBBox(
               tile.coord.x,
               tile.coord.y,
               tile.coord.z,
               x - res2, y - res2, res
             )
           }
         }
        }
      }
      return null;
    },

    _preloadIcons: function(img_names) {
      var self = this;

      if (img_names.length > 0 && !this._forcePoints) {

        var qualifiedImageUrlSet = Object.keys(img_names.reduce(function(imgNamesMap, imgName) {
            var qualifiedUrl = self._qualifyURL(imgName);
            if (!self._icons[qualifiedUrl]) {
                imgNamesMap[qualifiedUrl] = true;
            }
            return imgNamesMap;
        }, {}));

        var filtered = self._shader.getLayers().some(function(layer) {
          return typeof layer.shader["image-filters"] !== "undefined";
        });

        this._iconsToLoad += qualifiedImageUrlSet.length;

        qualifiedImageUrlSet.forEach(function(qualifiedImageUrl) {
          self._icons[qualifiedImageUrl] = null;

          var img = self._createImage();

          if (filtered) {
            img.crossOrigin = 'Anonymous';
          }

          self._setImageSrc(img, qualifiedImageUrl, function(err) {
            if (err) {
              self._forcePoints = true;
              self.clearSpriteCache();
              self._iconsToLoad = 0;
              self.fire("allIconsLoaded");
              if(filtered) {
                console.info("Only CORS-enabled, or same domain image-files can be used in combination with image-filters");
              }
              console.error("Couldn't get marker-file " + qualifiedImageUrl);
            } else {
              self._icons[qualifiedImageUrl] = img;
              self._iconsToLoad--;

              if (self._iconsToLoad <= 0){
                self.clearSpriteCache();
                self.fire("allIconsLoaded");
              }
            }
          });
        });
      } else {
          this.fire("allIconsLoaded");
      }
  },

  applyFilters: function(){
    if(this._style){
      if(this._style['image-filters']){
        function gradientKey(imf){
          var hash = ""
          for(var i = 0; i < imf.args.length; i++){
            var rgb = imf.args[i].rgb;
            hash += rgb[0] + ":" + rgb[1] + ":" + rgb[2];
          }
          return hash;
        }
        var gradient = this._gradients[gradientKey(this._style['image-filters'])];
        if(!gradient){
          function componentToHex(c) {
            var hex = c.toString(16);
            return hex.length == 1 ? "0" + hex : hex;
          }

          function rgbToHex(r, g, b) {
            return "#" + componentToHex(r) + componentToHex(g) + componentToHex(b);
          }
          gradient = {};
          var colorize = this._style['image-filters'].args;

          var increment = 1/colorize.length;
          for (var i = 0; i < colorize.length; i++){
            var key = increment * i + increment;
            var rgb = colorize[i].rgb;
            var formattedColor = rgbToHex(rgb[0], rgb[1], rgb[2]);
            gradient[key] = formattedColor;
          }
          this._gradients[gradientKey(this._style['image-filters'])] = gradient;
        }
        this._filters.gradient(gradient);
        this._filters.draw();
      }
    }
  }
});

PointRenderer.isTurboCarto = function (cartocss) {
  var reservedWords = ['ramp', 'colorbrewer', 'buckets']
  var isTurbo = reservedWords
    .map(function (w) {
      return w + '('
    })
    .map(String.prototype.indexOf.bind(cartocss))
    .every(function (f) { return f === -1 })
  return !isTurbo
}


  // exports public api
module.exports = PointRenderer;

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"../":11,"../profiler":22,"./cartocss_render":28,"./datasource":29,"./torque_filters":33,"carto":undefined,"turbo-carto":undefined}],32:[function(require,module,exports){
(function (global){
var carto = global.carto || require('carto');

  var DEFAULT_CARTOCSS = [
    '#layer {',
    '  polygon-fill: #FFFF00;',
    '  [value > 10] { polygon-fill: #FFFF00; }',
    '  [value > 100] { polygon-fill: #FFCC00; }',
    '  [value > 1000] { polygon-fill: #FE9929; }',
    '  [value > 10000] { polygon-fill: #FF6600; }',
    '  [value > 100000] { polygon-fill: #FF3300; }',
    '}'
  ].join('\n');

  var TAU = Math.PI * 2;

  //
  // this renderer just render points depending of the value
  // 
  function RectanbleRenderer(canvas, options) {
    this.options = options;
    carto.tree.Reference.set(torque['torque-reference']);
    this.setCanvas(canvas);
    this.setCartoCSS(this.options.cartocss || DEFAULT_CARTOCSS);
  }

  RectanbleRenderer.prototype = {

    //
    // sets the cartocss style to render stuff
    //
    setCartoCSS: function(cartocss) {
      this._cartoCssStyle = new carto.RendererJS().render(cartocss);
      if(this._cartoCssStyle.getLayers().length > 1) {
        throw new Error("only one CartoCSS layer is supported");
      }
      this._shader = this._cartoCssStyle.getLayers()[0].shader;
    },

    setCanvas: function(canvas) {
      if(!canvas) return;
      this._canvas = canvas;
      this._ctx = canvas.getContext('2d');
    },

    accumulate: function(tile, keys) {
      var prof = Profiler.metric('RectangleRender:accumulate').start();
      var x, y, posIdx, p, k, key, activePixels, pixelIndex;
      var res = this.options.resolution;
      var s = 256/res;
      var accum = new Float32Array(s*s);

      if(typeof(keys) !== 'object') {
        keys = [keys];
      }

      for(k = 0; k < keys.length; ++k) {
        key = keys[k];
        activePixels = tile.timeCount[key];
        if(activePixels) {
          pixelIndex = tile.timeIndex[key];
          for(p = 0; p < activePixels; ++p) {
            posIdx = tile.renderDataPos[pixelIndex + p];
            x = tile.x[posIdx]/res;
            y = tile.y[posIdx]/res;
            accum[x*s + y] += tile.renderData[pixelIndex + p];
          }
        }
      }

      prof.end();
      return accum;
    },

    renderTileAccum: function(accum, px, py) {
      var prof = Profiler.metric('RectangleRender:renderTileAccum').start();
      var color, x, y, alpha;
      var res = this.options.resolution;
      var ctx = this._ctx;
      var s = (256/res) | 0;
      var s2 = s*s;
      var colors = this._colors;
      if(this.options.blendmode) {
        ctx.globalCompositeOperation = this.options.blendmode;
      }
      var polygon_alpha = this._shader['polygon-opacity'] || function() { return 1.0; };
      for(var i = 0; i < s2; ++i) {
        var xy = i;
        var value = accum[i];
        if(value) {
          x = (xy/s) | 0;
          y = xy % s;
          // by-pass the style generation for improving performance
          color = this._shader['polygon-fill']({ value: value }, { zoom: 0 });
          ctx.fillStyle = color;
          //TODO: each function should have a default value for each 
          //property defined in the cartocss
          alpha = polygon_alpha({ value: value }, { zoom: 0 });
          if(alpha === null) {
            alpha = 1.0;
          }
          ctx.globalAlpha = alpha;
          ctx.fillRect(x * res, 256 - res - y * res, res, res);
        }
      }
      prof.end();
    },

    //
    // renders a tile in the canvas for key defined in 
    // the torque tile
    //
    renderTile: function(tile, key, callback) {
      if(!this._canvas) return;

      var res = this.options.resolution;

      //var prof = Profiler.get('render').start();
      var ctx = this._ctx;
      var colors = this._colors;
      var activepixels = tile.timeCount[key];
      if(activepixels) {
        var w = this._canvas.width;
        var h = this._canvas.height;
        //var imageData = ctx.getImageData(0, 0, w, h);
        //var pixels = imageData.data;
        var pixelIndex = tile.timeIndex[key];
        for(var p = 0; p < activePixels; ++p) {
          var posIdx = tile.renderDataPos[pixelIndex + p];
          var c = tile.renderData[pixelIndex + p];
          if(c) {
           var color = colors[Math.min(c, colors.length - 1)];
           var x = tile.x[posIdx];// + px;
           var y = tile.y[posIdx]; //+ py;

           ctx.fillStyle = color;
           ctx.fillRect(x, y, res, res);
           /*

           for(var xx = 0; xx < res; ++xx) {
            for(var yy = 0; yy < res; ++yy) {
              var idx = 4*((x+xx) + w*(y + yy));
              pixels[idx + 0] = color[0];
              pixels[idx + 1] = color[1];
              pixels[idx + 2] = color[2];
              pixels[idx + 3] = color[3];
            }
           }
           */
          }
        }
        //ctx.putImageData(imageData, 0, 0);
      }
      //prof.end();
      return callback && callback(null);
    }
  };


  // exports public api
module.exports = RectanbleRenderer;

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"carto":undefined}],33:[function(require,module,exports){
/*
 Based on simpleheat, a tiny JavaScript library for drawing heatmaps with Canvas, 
 by Vladimir Agafonkin
 https://github.com/mourner/simpleheat
*/

'use strict';

function torque_filters(canvas, options) {
    // jshint newcap: false, validthis: true
    if (!(this instanceof torque_filters)) { return new torque_filters(canvas, options); }

    options = options || {};

    this._canvas = canvas = typeof canvas === 'string' ? document.getElementById(canvas) : canvas;

    this._ctx = canvas.getContext('2d');
    this._width = canvas.width;
    this._height = canvas.height;

    this._max = 1;
    this._data = [];

    this.canvasClass = options.canvasClass;
}

torque_filters.prototype = {

    defaultGradient: {
        0.4: 'blue',
        0.6: 'cyan',
        0.7: 'lime',
        0.8: 'yellow',
        1.0: 'red'
    },

    gradient: function (grad) {
        // create a 256x1 gradient that we'll use to turn a grayscale heatmap into a colored one
        var canvas = this._createCanvas(),
            ctx = canvas.getContext('2d'),
            gradient = ctx.createLinearGradient(0, 0, 0, 256);

        canvas.width = 1;
        canvas.height = 256;

        for (var i in grad) {
            gradient.addColorStop(+i, grad[i]);
        }

        ctx.fillStyle = gradient;
        ctx.fillRect(0, 0, 1, 256);

        this._grad = ctx.getImageData(0, 0, 1, 256).data;

        return this;
    },

    draw: function () {
        if (!this._grad) {
            this.gradient(this.defaultGradient);
        }

        var ctx = this._ctx;
        var colored = ctx.getImageData(0, 0, this._canvas.width, this._canvas.height);
        this._colorize(colored.data, this._grad);
        ctx.putImageData(colored, 0, 0);

        return this;
    },

    _colorize: function (pixels, gradient) {
        for (var i = 3, len = pixels.length, j; i < len; i += 4) {
            j = pixels[i] * 4; // get gradient color from opacity value

            if (j) {
                pixels[i - 3] = gradient[j];
                pixels[i - 2] = gradient[j + 1];
                pixels[i - 1] = gradient[j + 2];
            }
        }
    },

    _createCanvas: function() {
        return this.canvasClass
            ? new this.canvasClass()
            : document.createElement('canvas');
    }
};

module.exports = torque_filters;

},{}],34:[function(require,module,exports){
(function (global){
var torque = require('./core');

  var lastCall = null;

  function jsonp(url, callback, options) {
     options = options || {};
     options.timeout = options.timeout === undefined ? 10000: options.timeout;
     var head = document.getElementsByTagName('head')[0];
     var script = document.createElement('script');

     // function name
     var fnName = options.callbackName || 'torque_' + Date.now();

     if (torque.isFunction(fnName)) {
       fnName = fnName();
     }

     function clean() {
       head.removeChild(script);
       clearTimeout(timeoutTimer);
       delete window[fnName];
     }

     window[fnName] = function() {
       clean();
       callback.apply(window, arguments);
     };

     // timeout for errors
     var timeoutTimer = setTimeout(function() { 
       clean();
       callback.call(window, null); 
     }, options.timeout);

     // setup url
     url = url.replace('callback=\?', 'callback=' + fnName);
     script.type = 'text/javascript';
     script.src = url;
     script.async = true;
     // defer the loading because IE9 loads in the same frame the script
     // so Loader._script is null
     setTimeout(function() { head.appendChild(script); }, 0);
  }

  function get(url, callback, options) {
    options = options || {
      method: 'GET',
      data: null,
      responseType: 'text'
    };
    lastCall = { url: url, callback: callback };
    var request = XMLHttpRequest;
    // from d3.js
    if (global.XDomainRequest
        && !("withCredentials" in request)
        && /^(http(s)?:)?\/\//.test(url)) request = XDomainRequest;

    var req = new request();
    req.open(options.method, url, true);


    function respond() {
      var status = req.status, result;
      var r = options.responseType === 'arraybuffer' ? req.response: req.responseText;
      if (!status && r || status >= 200 && status < 300 || status === 304) {
        callback(req);
      } else {
        callback(null);
      }
    }

    "onload" in req
      ? req.onload = req.onerror = respond
      : req.onreadystatechange = function() { req.readyState > 3 && respond(); };

    req.onprogress = function() {};

    req.responseType = options.responseType; //'arraybuffer';
    if (options.data) {
      req.setRequestHeader("Content-type", "application/json");
      //req.setRequestHeader("Content-type", "application/x-www-form-urlencoded")
      req.setRequestHeader("Accept", "*");
    }
    req.send(options.data);
    return req;
  }

  function post(url, data, callback) {
    return get(url, callback, {
      data: data,
      method: "POST"
    });
  }

module.exports = {
    get: get,
    post: post,
    jsonp: jsonp,
    lastCall: function() { return lastCall; }
};

}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./core":5}]},{},[11])(11)
});