diff --git a/lib/MeasureTool.min.js b/lib/MeasureTool.min.js
index 7de7378..965a675 100644
--- a/lib/MeasureTool.min.js
+++ b/lib/MeasureTool.min.js
@@ -1 +1 @@
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0;return o=e[0]===n[0]?n[1]>e[1]?90:n[1]<e[1]?270:0:180*Math.atan((n[1]-e[1])/(n[0]-e[0]))/Math.PI,"translate("+i[0]+", "+i[1]+") rotate("+o+")"}},{key:"makeId",value:function(t){return(Math.random().toString(36)+"00000000000000000").slice(2,t+2)}},{key:"_interpolate",value:function(t,e,n){var i=google.maps.geometry.spherical.interpolate(new google.maps.LatLng(t[1],t[0]),new google.maps.LatLng(e[1],e[0]),n);return[i.lng(),i.lat()]}}]),t}();e.default=a,t.exports=e.default},function(t,e,n){"use strict";Object.defineProperty(e,"__esModule",{value:!0});e.ObjectAssign=function(){"function"!=typeof Object.assign&&(Object.assign=function(t){if(null==t)throw new TypeError("Cannot convert undefined or null to object");t=Object(t);for(var e=1;e<arguments.length;e++){var n=arguments[e];if(null!=n)for(var i in n)Object.prototype.hasOwnProperty.call(n,i)&&(t[i]=n[i])}return t})}},function(t,e,n){"use strict";function i(t,e){if(!(t instanceof e))throw new TypeError("Cannot call a class as a function")}Object.defineProperty(e,"__esModule",{value:!0});var o=function(){function t(t,e){for(var n=0;n<e.length;n++){var i=e[n];i.enumerable=i.enumerable||!1,i.configurable=!0,"value"in i&&(i.writable=!0),Object.defineProperty(t,i.key,i)}}return function(e,n,i){return n&&t(e.prototype,n),i&&t(e,i),e}}(),r=function(){function t(e,n,o){i(this,t),this._defaultOptions={offsetRate:8e3},this._options=Object.assign({},this._defaultOptions,o||{}),this._container=e,this._projection=n}return o(t,[{key:"latLngToSvgPoint",value:function(t){var e=this._options.offsetRate/2,n=new google.maps.LatLng(t[1],t[0]),i=this._projection.fromLatLngToDivPixel(n);return[i.x+e,i.y+e]}},{key:"svgPointToLatLng",value:function(t){var e=this._options.offsetRate/2,n=new google.maps.Point(t[0]-e,t[1]-e),i=this._projection.fromDivPixelToLatLng(n);return[i.lng(),i.lat()]}},{key:"svgPointToContainerPoint",value:function(t){var e=this.svgPointToLatLng(t);return this._projection.fromLatLngToContainerPixel(new google.maps.LatLng(e[1],e[0]))}},{key:"latLngToContainerPoint",value:function(t){return this._projection.fromLatLngToContainerPixel(new google.maps.LatLng(t[1],t[0]))}}]),t}();e.default=r,t.exports=e.default},function(t,e,n){"use strict";function i(t,e){if(!(t instanceof e))throw new TypeError("Cannot call a class as a function")}Object.defineProperty(e,"__esModule",{value:!0});var o=function(){function t(t,e){for(var n=0;n<e.length;n++){var i=e[n];i.enumerable=i.enumerable||!1,i.configurable=!0,"value"in i&&(i.writable=!0),Object.defineProperty(t,i.key,i)}}return function(e,n,i){return n&&t(e.prototype,n),i&&t(e,i),e}}();e.Segment=function(){function t(e,n,o,r){i(this,t),this._start=e,this._end=n,this._length=o,this._lengthText=r}return o(t,[{key:"toJSON",value:function(){return{start_location:{lat:this._start[1],lng:this._start[0]},end_location:{lat:this._end[1],lng:this._end[0]},length:{text:this._lengthText,value:this._length}}}}]),t}()},function(t,e,n){"use strict";function i(t,e){if(!(t instanceof e))throw new TypeError("Cannot call a class as a function")}Object.defineProperty(e,"__esModule",{value:!0});var o=function(){function t(t,e){for(var n=0;n<e.length;n++){var i=e[n];i.enumerable=i.enumerable||!1,i.configurable=!0,"value"in i&&(i.writable=!0),Object.defineProperty(t,i.key,i)}}return function(e,n,i){return n&&t(e.prototype,n),i&&t(e,i),e}}(),r=n(4),a=n(76),s=function(t){return t&&t.__esModule?t:{default:t}}(a),u=function(){function t(e){i(this,t),this._parentDiv=e,this._containerDiv=document.createElement("div"),this._containerDiv.classList.add(r.Config.prefix+"-tooltip"),this._containerDiv.stylesheet=s.default,e.appendChild(this._containerDiv)}return o(t,[{key:"show",value:function(t,e){this._containerDiv.innerHTML=e,this._containerDiv.style.cssText="\n      display: block;\n      visibility: hidden;\n      position: absolute;\n    ";var n=this._parentDiv.getBoundingClientRect().width,i=this._parentDiv.getBoundingClientRect().height;this._containerDiv.style.cssText+=t.x<n/2?"left: "+t.x+"px;":"right: "+(n-t.x)+"px;",this._containerDiv.style.cssText+=t.y<i/2?"top: "+t.y+"px":"bottom: "+(i-t.y)+"px;",this._containerDiv.style.cssText+="visibility: visible;"}},{key:"hide",value:function(){this._containerDiv.style.cssText="display: none"}}]),t}();e.default=u,t.exports=e.default},function(t,e,n){"use strict";Object.defineProperty(e,"__esModule",{value:!0});var i=n(39);n.d(e,"drag",function(){return i.a});var o=n(14);n.d(e,"dragDisable",function(){return o.a}),n.d(e,"dragEnable",function(){return o.b})},function(t,e,n){var i=n(34);"string"==typeof i&&(i=[[t.i,i,""]]);n(12)(i,{});i.locals&&(t.exports=i.locals)},function(t,e,n){"use strict";function i(t){return t&&t.__esModule?t:{default:t}}function o(t){if(Array.isArray(t)){for(var e=0,n=Array(t.length);e<t.length;e++)n[e]=t[e];return n}return Array.from(t)}function r(t,e){if(!(t instanceof e))throw new TypeError("Cannot call a class as a function")}Object.defineProperty(e,"__esModule",{value:!0});var a=function(){function t(t,e){for(var n=0;n<e.length;n++){var i=e[n];i.enumerable=i.enumerable||!1,i.configurable=!0,"value"in i&&(i.writable=!0),Object.defineProperty(t,i.key,i)}}return function(e,n,i){return n&&t(e.prototype,n),i&&t(e,i),e}}(),s=n(31),u=(i(s),n(4)),c=n(22),l=i(c),h=n(29),f=i(h),p=n(1),d=n(27),g=i(d),v=n(24),_=n(28),m=n(30),y=n(25),x=i(y),A=n(13),b=n(23),w=n(26),C=function(){function t(e,n){r(this,t),this._initPolyfills(),this._options={showSegmentLength:!0,showAccumulativeLength:!0,contextMenu:!0,tooltip:!0,unit:A.UnitTypeId.METRIC},Object.assign(this._options,n),this._map=e,this._map.setClickableIcons(!1),this._id=x.default.makeId(4),this._events=new Map,this._init()}return a(t,[{key:"lengthText",get:function(){return this._helper.formatLength(this._length||0)}},{key:"areaText",get:function(){return this._helper.formatArea(this._area||0)}},{key:"length",get:function(){return this._length||0}},{key:"area",get:function(){return this._area||0}},{key:"segments",get:function(){return this._segments||[]}}],[{key:"UnitTypeId",get:function(){return A.UnitTypeId}}]),a(t,[{key:"_initPolyfills",value:function(){(0,w.ObjectAssign)()}},{key:"_init",value:function(){this._containerDiv=this._map.getDiv().querySelector("div:first-child"),this._options.contextMenu&&(this._contextMenu=new l.default(this._containerDiv,{width:160}),this._startElementNode=this._contextMenu.addItem("Measure distance",!0,this.start,this),this._endElementNode=this._contextMenu.addItem("Clear measurement",!1,this.end,this),this._bindToggleContextMenu()),this._options.tooltip&&(this._tooltip=new f.default(this._containerDiv)),this._helper=new x.default({unit:this._options.unit}),this._initOverlay()}},{key:"_bindToggleContextMenu",value:function(){var t=this;this._map.addListener("rightclick",function(e){t._firstClick=e,t._contextMenu.show(t._projection.fromLatLngToContainerPixel(e.latLng))}),document.addEventListener("keydown",function(e){27===e.which&&t._contextMenu.hide()}),this._containerDiv.addEventListener("mousedown",function(e){e.clientX>=t._contextMenu.left&&e.clientX<=t._contextMenu.left+t._contextMenu.width&&e.clientY>=t._contextMenu.top&&e.clientY<=t._contextMenu.top+t._contextMenu.height||t._contextMenu.hide()})}},{key:"start",value:function(){var t=this;this._started||(this._overlay.setMap(this._map),this._geometry=new v.Geometry,this._segments=[],this._options.contextMenu&&this._firstClick&&(this._checkClick(this._firstClick),this._contextMenu.toggleItems([this._endElementNode],[this._startElementNode])),this._mapClickEvent=this._map.addListener("click",function(e){return t._checkClick(e)}),this._mapZoomChangedEvent=this._map.addListener("zoom_changed",function(){return t._redrawOverlay()}),this._map.setOptions({draggableCursor:"default"}),this._started=!0,"function"==typeof this._events.get(b.EVENT_START)&&this._events.get(b.EVENT_START)())}},{key:"end",value:function(){this._started&&(this._options.contextMenu&&this._contextMenu.toggleItems([this._startElementNode],[this._endElementNode]),this._mapClickEvent.remove(),this._mapZoomChangedEvent.remove(),this._geometry=new v.Geometry,this._onRemoveOverlay(),this._setOverlay(),this._overlay.setMap(null),this._map.setOptions({draggableCursor:null}),this._started=!1,"function"==typeof this._events.get(b.EVENT_END)&&this._events.get(b.EVENT_END)({result:{length:this.length,lengthText:this.lengthText,area:this.area,areaText:this.areaText,segments:this.segments}}))}},{key:"addListener",value:function(t,e){this._events.set(t,e)}},{key:"removeListener",value:function(t){this._events.delete(t)}},{key:"setOption",value:function(t,e){if(!this._options[t])throw new Error(t+" is not a valid option on MeasureTool");this._options[t]=e,this._helper._options[t]&&this._helper.setOption(t,e),this._overlay&&this._nodeCircles&&this._redrawOverlay()}},{key:"_initOverlay",value:function(){this._setOverlay(),this._initComplete=!1}},{key:"_setOverlay",value:function(){this._overlay=new google.maps.OverlayView,this._overlay.onAdd=this._onAddOverlay.bind(this),this._overlay.draw=this._onDrawOverlay.bind(this),this._overlay.onRemove=this._onRemoveOverlay.bind(this),this._overlay.setMap(this._map)}},{key:"_onAddOverlay",value:function(){this._initComplete||(this._initComplete=!0),this._projection=this._overlay.getProjection(),this._projectionUtility=new g.default(this._containerDiv,this._projection),this._svgOverlay=(0,p.select)(this._overlay.getPanes().overlayMouseTarget).append("div").attr("class",u.Config.prefix+"-measure-points-"+this._id).append("svg").attr("class",u.Config.prefix+"-svg-overlay"),this._linesBase=this._svgOverlay.append("g").attr("class","base"),this._linesBase.selectAll("line").data(this._geometry?this._geometry.lines:[]),this._linesAux=this._svgOverlay.append("g").attr("class","aux"),this._linesAux.selectAll("line").data(this._geometry?this._geometry.lines:[]),this._nodeCircles=this._svgOverlay.append("g").attr("class","node-circle"),this._nodeCircles.selectAll("circle").data(this._geometry?this._geometry.nodes:[]),this._options.showSegmentLength&&(this._segmentText=this._svgOverlay.append("g").attr("class","segment-text"),this._segmentText.selectAll("text").data(this._geometry?this._geometry.lines:[])),this._options.showAccumulativeLength&&(this._nodeText=this._svgOverlay.append("g").attr("class","node-text"),this._nodeText.selectAll("text").data(this._geometry?this._geometry.nodes:[])),this._hoverCircle=this._svgOverlay.append("g").attr("class","hover-circle"),this._hoverCircle.append("circle").attr("class","grey-circle").attr("r",5),this._initComplete&&!this._started&&this._overlay.setMap(null)}},{key:"_onDrawOverlay",value:function(){this._updateCircles(),this._updateLine(),this._options.showSegmentLength&&this._updateSegmentText(),this._options.showAccumulativeLength&&this._updateNodeText(),this._geometry&&this._updateArea(this._geometry.nodes.length-1,this._geometry.nodes[this._geometry.nodes.length-1]),this._dispatchMeasureEvent()}},{key:"_onRemoveOverlay",value:function(){(0,p.select)("."+u.Config.prefix+"-measure-points-"+this._id).remove()}},{key:"_redrawOverlay",value:function(){this._onRemoveOverlay(),this._setOverlay(),this._overlay.draw()}},{key:"_checkClick",value:function(t){if(!this._dragged&&0==this._nodeCircles.selectAll('circle[r="6"]').size()&&!this._hoverCircle.select("circle").attr("cx")){var e=[t.latLng.lng(),t.latLng.lat()];this._geometry.addNode(e),this._overlay.draw()}this._dragged=!1}},{key:"_updateCircles",value:function(){var t=this,e=this;this._nodeCircles.selectAll("circle").data(this._geometry?this._geometry.nodes:[]).attr("class",function(t,e){return 0===e?"cover-circle head-circle":"cover-circle"}).attr("r",5).attr("cx",function(e){return t._projectionUtility.latLngToSvgPoint(e)[0]}).attr("cy",function(e){return t._projectionUtility.latLngToSvgPoint(e)[1]}).on("mouseover",function(t,n){e._onOverCircle(t,n,this)}).on("mouseout",function(t){e._onOutCircle(t,this)}).on("touchstart",function(t,n){e._onOverCircle(t,n,this)}).on("touchleave",function(t){e._onOutCircle(t,this)}).on("mousedown",function(){return t._hideTooltip()}).call(this._onDragCircle()).enter().append("circle").attr("class","cover-circle").attr("r",5).attr("cx",function(e){return t._projectionUtility.latLngToSvgPoint(e)[0]}).attr("cy",function(e){return t._projectionUtility.latLngToSvgPoint(e)[1]}).on("mouseover",function(t,n){e._onOverCircle(t,n,this)}).on("mouseout",function(t){e._onOutCircle(t,this)}).on("touchstart",function(t,n){e._onOverCircle(t,n,this)}).on("touchleave",function(t){e._onOutCircle(t,this)}).on("mousedown",function(){return t._hideTooltip()}).call(this._onDragCircle()),this._nodeCircles.selectAll(".removed-circle").remove()}},{key:"_updateLine",value:function(){var t=this;this._segments=[];var e=this._linesBase.selectAll("line").data(this._geometry?this._geometry.lines:[]).attr("class","base-line").attr("x1",function(e){return t._projectionUtility.latLngToSvgPoint(e[0])[0]}).attr("y1",function(e){return t._projectionUtility.latLngToSvgPoint(e[0])[1]}).attr("x2",function(e){return t._projectionUtility.latLngToSvgPoint(e[1])[0]}).attr("y2",function(e){return t._projectionUtility.latLngToSvgPoint(e[1])[1]}).each(function(e){return t._updateSegment(e)});e.enter().append("line").attr("class","base-line").attr("x1",function(e){return t._projectionUtility.latLngToSvgPoint(e[0])[0]}).attr("y1",function(e){return t._projectionUtility.latLngToSvgPoint(e[0])[1]}).attr("x2",function(e){return t._projectionUtility.latLngToSvgPoint(e[1])[0]}).attr("y2",function(e){return t._projectionUtility.latLngToSvgPoint(e[1])[1]}).each(function(e){return t._updateSegment(e)}),e.exit().remove();var n=this._linesAux.selectAll("line").data(this._geometry?this._geometry.lines:[]).attr("class","aux-line").attr("x1",function(e){return t._projectionUtility.latLngToSvgPoint(e[0])[0]}).attr("y1",function(e){return t._projectionUtility.latLngToSvgPoint(e[0])[1]}).attr("x2",function(e){return t._projectionUtility.latLngToSvgPoint(e[1])[0]}).attr("y2",function(e){return t._projectionUtility.latLngToSvgPoint(e[1])[1]}).on("mousemove",function(e){var n=x.default.findTouchPoint([t._projectionUtility.latLngToSvgPoint(e[0]),t._projectionUtility.latLngToSvgPoint(e[1])],[p.event.offsetX,p.event.offsetY]);t._updateHoverCirclePosition(n[0],n[1])}).on("mouseout",function(e){return t._hideHoverCircle()}).on("mousedown",function(){return t._hideTooltip()}).call(this._onDragLine());n.enter().append("line").attr("class","aux-line").attr("x1",function(e){return t._projectionUtility.latLngToSvgPoint(e[0])[0]}).attr("y1",function(e){return t._projectionUtility.latLngToSvgPoint(e[0])[1]}).attr("x2",function(e){return t._projectionUtility.latLngToSvgPoint(e[1])[0]}).attr("y2",function(e){return t._projectionUtility.latLngToSvgPoint(e[1])[1]}).on("mousemove",function(e){var n=x.default.findTouchPoint([t._projectionUtility.latLngToSvgPoint(e[0]),t._projectionUtility.latLngToSvgPoint(e[1])],[p.event.offsetX,p.event.offsetY]);t._updateHoverCirclePosition(n[0],n[1])}).on("mouseout",function(e){return t._hideHoverCircle()}).on("mousedown",function(){return t._hideTooltip()}).call(this._onDragLine()),n.exit().remove()}},{key:"_updateSegmentText",value:function(){var t=this,e=this._segmentText.selectAll("text").data(this._geometry?this._geometry.lines:[]).attr("class","segment-measure-text").attr("text-anchor","middle").attr("dominant-baseline","text-before-edge").attr("transform",function(e){var n=t._projectionUtility.latLngToSvgPoint(e[0]),i=t._projectionUtility.latLngToSvgPoint(e[1]);return x.default.transformText(n,i)}).text(function(e,n){return t._helper.formatLength(t._helper.computeLengthBetween(e[0],e[1]))});e.enter().append("text").attr("class","segment-measure-text").attr("text-anchor","middle").attr("dominant-baseline","text-before-edge").attr("transform",function(e){var n=t._projectionUtility.latLngToSvgPoint(e[0]),i=t._projectionUtility.latLngToSvgPoint(e[1]);return x.default.transformText(n,i)}).text(function(e,n){return t._helper.formatLength(t._helper.computeLengthBetween(e[0],e[1]))}),e.exit().remove()}},{key:"_updateNodeText",value:function(){var t=this,e=this._nodeText.selectAll("text").data(this._geometry?this._geometry.nodes:[]).attr("class",function(t,e){return 0===e?"node-measure-text head-text":"node-measure-text"}).attr("text-anchor","middle").attr("dominant-baseline","text-after-edge").attr("x",function(e){return t._projectionUtility.latLngToSvgPoint(e)[0]}).attr("y",this._transformNodeTextY.bind(this)).text(function(e,n){var i=t._helper.computePathLength(t._geometry.nodes.slice(0,n+1));return n===t._geometry.nodes.length-1&&(t._length=i),t._helper.formatLength(i)});e.enter().append("text").attr("class",function(t,e){return 0===e?"node-measure-text head-text":"node-measure-text"}).attr("text-anchor","middle").attr("dominant-baseline","text-after-edge").attr("x",function(e){return t._projectionUtility.latLngToSvgPoint(e)[0]}).attr("y",this._transformNodeTextY.bind(this)).text(function(e,n){var i=t._helper.computePathLength(t._geometry.nodes.slice(0,n+1));return n===t._geometry.nodes.length-1&&(t._length=i),t._helper.formatLength(i)}),e.exit().remove()}},{key:"_onOverCircle",value:function(t,e,n){this._dragging||((0,p.select)(n).attr("r",6),this._options.tooltip&&this._tooltip.show(this._projectionUtility.latLngToContainerPoint(t),0===e?u.Config.tooltipText2:u.Config.tooltipText1))}},{key:"_onOutCircle",value:function(t,e){(0,p.select)(e).attr("r",5),this._hideTooltip()}},{key:"_onDragCircle",value:function(){var t=this,e=!1,n=(0,m.drag)().on("drag",function(n,i){e=!0,t._dragging=!0,(0,p.select)(this).attr("cx",p.event.x).attr("cy",p.event.y),t._updateLinePosition.call(t,t._linesBase,i),t._updateLinePosition.call(t,t._linesAux,i),t._options.showSegmentLength&&t._updateSegmentTextPosition(i),t._options.showAccumulativeLength&&t._updateNodeTextPosition(i),t._updateArea(i,t._projectionUtility.svgPointToLatLng([p.event.x,p.event.y]))});return n.on("start",function(e){p.event.sourceEvent.stopPropagation(),(0,p.select)(this).raise().attr("r",6),t._disableMapScroll()}),n.on("end",function(n,i){t._enableMapScroll(),e?(t._geometry.updateNode(i,t._projectionUtility.svgPointToLatLng([p.event.x,p.event.y])),t._showTooltipOnEvent(0===i?u.Config.tooltipText2:u.Config.tooltipText1)):i>0?(t._geometry.removeNode(i),(0,p.select)(this).classed("removed-circle",!0)):(t._geometry.addNode(n),t._dragged=!0),e=!1,t._dragging=!1,t._overlay.draw()}),n}},{key:"_onDragLine",value:function(){var t=this,e=!1,n=(0,m.drag)().on("drag",function(n,i){t._dragging=!0,e||(e=!0,t._geometry.insertNode(i+1,t._projectionUtility.svgPointToLatLng([p.event.x,p.event.y])),t._updateLine(),t._options.showSegmentLength&&t._updateSegmentText(),t._options.showAccumulativeLength&&t._updateNodeText()),t._updateHoverCirclePosition(p.event.x,p.event.y),t._updateLinePosition(t._linesBase,i+1),t._updateLinePosition(t._linesAux,i+1),t._options.showSegmentLength&&t._updateSegmentTextPosition(i+1),t._options.showAccumulativeLength&&t._updateNodeTextPosition(i+1),t._updateArea(i+1,t._projectionUtility.svgPointToLatLng([p.event.x,p.event.y]))});return 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n=this._parentDiv.getBoundingClientRect().width,i=this._parentDiv.getBoundingClientRect().height;this._containerDiv.style.cssText+=t.x<n/2?"left: "+t.x+"px;":"right: "+(n-t.x)+"px;",this._containerDiv.style.cssText+=t.y<i/2?"top: "+t.y+"px":"bottom: "+(i-t.y)+"px;",this._containerDiv.style.cssText+="visibility: visible;"}},{key:"hide",value:function(){this._containerDiv.style.cssText="display: none"}}]),t}();e.default=u,t.exports=e.default},function(t,e,n){"use strict";Object.defineProperty(e,"__esModule",{value:!0});var i=n(39);n.d(e,"drag",function(){return i.a});var o=n(14);n.d(e,"dragDisable",function(){return o.a}),n.d(e,"dragEnable",function(){return o.b})},function(t,e,n){var i=n(34);"string"==typeof i&&(i=[[t.i,i,""]]);n(12)(i,{});i.locals&&(t.exports=i.locals)},function(t,e,n){"use strict";function i(t){return t&&t.__esModule?t:{default:t}}function o(t){if(Array.isArray(t)){for(var e=0,n=Array(t.length);e<t.length;e++)n[e]=t[e];return n}return Array.from(t)}function r(t,e){if(!(t instanceof e))throw new TypeError("Cannot call a class as a function")}Object.defineProperty(e,"__esModule",{value:!0});var a=function(){function t(t,e){for(var n=0;n<e.length;n++){var i=e[n];i.enumerable=i.enumerable||!1,i.configurable=!0,"value"in i&&(i.writable=!0),Object.defineProperty(t,i.key,i)}}return function(e,n,i){return n&&t(e.prototype,n),i&&t(e,i),e}}(),s=n(31),u=(i(s),n(4)),c=n(22),l=i(c),h=n(29),f=i(h),p=n(1),d=n(27),g=i(d),v=n(24),_=n(28),m=n(30),y=n(25),x=i(y),A=n(13),w=n(23),b=n(26),C=function(){function t(e,n){r(this,t),this._initPolyfills(),this._options={showSegmentLength:!0,showAccumulativeLength:!1,showFinal:!1,contextMenu:!0,tooltip:!0,unit:A.UnitTypeId.METRIC},Object.assign(this._options,n),this._map=e,this._map.setClickableIcons(!1),this._id=x.default.makeId(4),this._events=new Map,this._init()}return a(t,[{key:"lengthText",get:function(){return this._helper.formatLength(this._length||0)}},{key:"areaText",get:function(){return this._helper.formatArea(this._area||0)}},{key:"length",get:function(){return this._length||0}},{key:"area",get:function(){return this._area||0}},{key:"segments",get:function(){return this._segments||[]}}],[{key:"UnitTypeId",get:function(){return A.UnitTypeId}}]),a(t,[{key:"_initPolyfills",value:function(){(0,b.ObjectAssign)()}},{key:"_init",value:function(){this._containerDiv=this._map.getDiv().querySelector("div:first-child"),this._options.contextMenu&&(this._contextMenu=new l.default(this._containerDiv,{width:160}),this._startElementNode=this._contextMenu.addItem("Measure distance",!0,this.start,this),this._endElementNode=this._contextMenu.addItem("Clear measurement",!1,this.end,this),this._bindToggleContextMenu()),this._options.tooltip&&(this._tooltip=new f.default(this._containerDiv)),this._helper=new x.default({unit:this._options.unit}),this._initOverlay()}},{key:"_bindToggleContextMenu",value:function(){var t=this;this._map.addListener("rightclick",function(e){t._firstClick=e,t._contextMenu.show(t._projection.fromLatLngToContainerPixel(e.latLng))}),document.addEventListener("keydown",function(e){27===e.which&&t._contextMenu.hide()}),this._containerDiv.addEventListener("mousedown",function(e){e.clientX>=t._contextMenu.left&&e.clientX<=t._contextMenu.left+t._contextMenu.width&&e.clientY>=t._contextMenu.top&&e.clientY<=t._contextMenu.top+t._contextMenu.height||t._contextMenu.hide()})}},{key:"start",value:function(){var t=this;this._started||(this._overlay.setMap(this._map),this._geometry=new v.Geometry,this._segments=[],this._options.contextMenu&&this._firstClick&&(this._checkClick(this._firstClick),this._contextMenu.toggleItems([this._endElementNode],[this._startElementNode])),this._mapClickEvent=this._map.addListener("click",function(e){return t._checkClick(e)}),this._mapZoomChangedEvent=this._map.addListener("zoom_changed",function(){return t._redrawOverlay()}),this._map.setOptions({draggableCursor:"default"}),this._started=!0,"function"==typeof this._events.get(w.EVENT_START)&&this._events.get(w.EVENT_START)())}},{key:"end",value:function(){if(this._started){this._options.contextMenu&&this._contextMenu.toggleItems([this._startElementNode],[this._endElementNode]),this._mapClickEvent.remove(),this._mapZoomChangedEvent.remove();var t=this._geometry.nodes;this._geometry=new v.Geometry,this._onRemoveOverlay(),this._setOverlay(),this._overlay.setMap(null),this._map.setOptions({draggableCursor:null}),this._started=!1,"function"==typeof this._events.get(w.EVENT_END)&&this._events.get(w.EVENT_END)({result:{length:this.length,lengthText:this.lengthText,area:this.area,areaText:this.areaText,segments:this.segments,coordinates:t}})}}},{key:"addListener",value:function(t,e){this._events.set(t,e)}},{key:"removeListener",value:function(t){this._events.delete(t)}},{key:"setOption",value:function(t,e){if(!this._options[t])throw new Error(t+" is not a valid option on MeasureTool");this._options[t]=e,this._helper._options[t]&&this._helper.setOption(t,e),this._overlay&&this._nodeCircles&&this._redrawOverlay()}},{key:"_initOverlay",value:function(){this._setOverlay(),this._initComplete=!1}},{key:"_setOverlay",value:function(){this._overlay=new google.maps.OverlayView,this._overlay.onAdd=this._onAddOverlay.bind(this),this._overlay.draw=this._onDrawOverlay.bind(this),this._overlay.onRemove=this._onRemoveOverlay.bind(this),this._overlay.setMap(this._map)}},{key:"_onAddOverlay",value:function(){this._initComplete||(this._initComplete=!0),this._projection=this._overlay.getProjection(),this._projectionUtility=new g.default(this._containerDiv,this._projection),this._svgOverlay=(0,p.select)(this._overlay.getPanes().overlayMouseTarget).append("div").attr("class",u.Config.prefix+"-measure-points-"+this._id).append("svg").attr("class",u.Config.prefix+"-svg-overlay"),this._linesBase=this._svgOverlay.append("g").attr("class","base"),this._linesBase.selectAll("line").data(this._geometry?this._geometry.lines:[]),this._linesAux=this._svgOverlay.append("g").attr("class","aux"),this._linesAux.selectAll("line").data(this._geometry?this._geometry.lines:[]),this._nodeCircles=this._svgOverlay.append("g").attr("class","node-circle"),this._nodeCircles.selectAll("circle").data(this._geometry?this._geometry.nodes:[]),this._options.showSegmentLength&&(this._segmentText=this._svgOverlay.append("g").attr("class","segment-text"),this._segmentText.selectAll("text").data(this._geometry?this._geometry.lines:[])),this._options.showAccumulativeLength&&(this._nodeText=this._svgOverlay.append("g").attr("class","node-text"),this._nodeText.selectAll("text").data(this._geometry?this._geometry.nodes:[])),this._hoverCircle=this._svgOverlay.append("g").attr("class","hover-circle"),this._hoverCircle.append("circle").attr("class","grey-circle").attr("r",5),this._initComplete&&!this._started&&this._overlay.setMap(null)}},{key:"_onDrawOverlay",value:function(){this._updateCircles(),this._updateLine(),this._options.showSegmentLength&&this._updateSegmentText(),this._options.showAccumulativeLength&&this._updateNodeText(),this._geometry&&this._updateArea(this._geometry.nodes.length-1,this._geometry.nodes[this._geometry.nodes.length-1]),this._dispatchMeasureEvent()}},{key:"_onRemoveOverlay",value:function(){(0,p.select)("."+u.Config.prefix+"-measure-points-"+this._id).remove()}},{key:"_redrawOverlay",value:function(){this._onRemoveOverlay(),this._setOverlay(),this._overlay.draw()}},{key:"_checkClick",value:function(t){if(!this._dragged&&0==this._nodeCircles.selectAll('circle[r="6"]').size()&&!this._hoverCircle.select("circle").attr("cx")){var e=[t.latLng.lng(),t.latLng.lat()];this._geometry.addNode(e),this._overlay.draw()}this._dragged=!1}},{key:"_updateCircles",value:function(){var t=this,e=this;this._nodeCircles.selectAll("circle").data(this._geometry?this._geometry.nodes:[]).attr("class",function(t,e){return 0===e?"cover-circle head-circle":"cover-circle"}).attr("r",5).attr("cx",function(e){return t._projectionUtility.latLngToSvgPoint(e)[0]}).attr("cy",function(e){return t._projectionUtility.latLngToSvgPoint(e)[1]}).on("mouseover",function(t,n){e._onOverCircle(t,n,this)}).on("mouseout",function(t){e._onOutCircle(t,this)}).on("touchstart",function(t,n){e._onOverCircle(t,n,this)}).on("touchleave",function(t){e._onOutCircle(t,this)}).on("mousedown",function(){return t._hideTooltip()}).call(this._onDragCircle()).enter().append("circle").attr("class","cover-circle").attr("r",5).attr("cx",function(e){return t._projectionUtility.latLngToSvgPoint(e)[0]}).attr("cy",function(e){return t._projectionUtility.latLngToSvgPoint(e)[1]}).on("mouseover",function(t,n){e._onOverCircle(t,n,this)}).on("mouseout",function(t){e._onOutCircle(t,this)}).on("touchstart",function(t,n){e._onOverCircle(t,n,this)}).on("touchleave",function(t){e._onOutCircle(t,this)}).on("mousedown",function(){return t._hideTooltip()}).call(this._onDragCircle()),this._nodeCircles.selectAll(".removed-circle").remove()}},{key:"_updateLine",value:function(){var t=this;this._segments=[];var e=this._linesBase.selectAll("line").data(this._geometry?this._geometry.lines:[]).attr("class","base-line").attr("x1",function(e){return t._projectionUtility.latLngToSvgPoint(e[0])[0]}).attr("y1",function(e){return t._projectionUtility.latLngToSvgPoint(e[0])[1]}).attr("x2",function(e){return t._projectionUtility.latLngToSvgPoint(e[1])[0]}).attr("y2",function(e){return t._projectionUtility.latLngToSvgPoint(e[1])[1]}).each(function(e){return t._updateSegment(e)});e.enter().append("line").attr("class","base-line").attr("x1",function(e){return t._projectionUtility.latLngToSvgPoint(e[0])[0]}).attr("y1",function(e){return t._projectionUtility.latLngToSvgPoint(e[0])[1]}).attr("x2",function(e){return t._projectionUtility.latLngToSvgPoint(e[1])[0]}).attr("y2",function(e){return t._projectionUtility.latLngToSvgPoint(e[1])[1]}).each(function(e){return t._updateSegment(e)}),e.exit().remove();var n=this._linesAux.selectAll("line").data(this._geometry?this._geometry.lines:[]).attr("class","aux-line").attr("x1",function(e){return t._projectionUtility.latLngToSvgPoint(e[0])[0]}).attr("y1",function(e){return t._projectionUtility.latLngToSvgPoint(e[0])[1]}).attr("x2",function(e){return t._projectionUtility.latLngToSvgPoint(e[1])[0]}).attr("y2",function(e){return t._projectionUtility.latLngToSvgPoint(e[1])[1]}).on("mousemove",function(e){var n=x.default.findTouchPoint([t._projectionUtility.latLngToSvgPoint(e[0]),t._projectionUtility.latLngToSvgPoint(e[1])],[p.event.offsetX,p.event.offsetY]);t._updateHoverCirclePosition(n[0],n[1])}).on("mouseout",function(e){return t._hideHoverCircle()}).on("mousedown",function(){return t._hideTooltip()}).call(this._onDragLine());n.enter().append("line").attr("class","aux-line").attr("x1",function(e){return t._projectionUtility.latLngToSvgPoint(e[0])[0]}).attr("y1",function(e){return t._projectionUtility.latLngToSvgPoint(e[0])[1]}).attr("x2",function(e){return t._projectionUtility.latLngToSvgPoint(e[1])[0]}).attr("y2",function(e){return t._projectionUtility.latLngToSvgPoint(e[1])[1]}).on("mousemove",function(e){var n=x.default.findTouchPoint([t._projectionUtility.latLngToSvgPoint(e[0]),t._projectionUtility.latLngToSvgPoint(e[1])],[p.event.offsetX,p.event.offsetY]);t._updateHoverCirclePosition(n[0],n[1])}).on("mouseout",function(e){return t._hideHoverCircle()}).on("mousedown",function(){return t._hideTooltip()}).call(this._onDragLine()),n.exit().remove()}},{key:"_updateSegmentText",value:function(){var t=this,e=this._segmentText.selectAll("text").data(this._geometry?this._geometry.lines:[]).attr("class","segment-measure-text").attr("text-anchor","middle").attr("dominant-baseline","text-before-edge").attr("transform",function(e){var n=t._projectionUtility.latLngToSvgPoint(e[0]),i=t._projectionUtility.latLngToSvgPoint(e[1]);return x.default.transformText(n,i)}).text(function(e,n){return t._helper.formatLength(t._helper.computeLengthBetween(e[0],e[1]))});e.enter().append("text").attr("class","segment-measure-text").attr("text-anchor","middle").attr("dominant-baseline","text-before-edge").attr("transform",function(e){var n=t._projectionUtility.latLngToSvgPoint(e[0]),i=t._projectionUtility.latLngToSvgPoint(e[1]);return x.default.transformText(n,i)}).text(function(e,n){return t._helper.formatLength(t._helper.computeLengthBetween(e[0],e[1]))}),e.exit().remove()}},{key:"_updateNodeText",value:function(){var t=this,e=this._nodeText.selectAll("text").data(this._geometry?this._geometry.nodes:[]).attr("class",function(t,e){return 0===e?"node-measure-text head-text":"node-measure-text"}).attr("text-anchor","middle").attr("dominant-baseline","text-after-edge").attr("x",function(e){return t._projectionUtility.latLngToSvgPoint(e)[0]}).attr("y",this._transformNodeTextY.bind(this)).text(function(e,n){var i=t._helper.computePathLength(t._geometry.nodes.slice(0,n+1));return n===t._geometry.nodes.length-1&&(t._length=i),t._helper.formatLength(i)});e.enter().append("text").attr("class",function(t,e){return 0===e?"node-measure-text head-text":"node-measure-text"}).attr("text-anchor","middle").attr("dominant-baseline","text-after-edge").attr("x",function(e){return t._projectionUtility.latLngToSvgPoint(e)[0]}).attr("y",this._transformNodeTextY.bind(this)).text(function(e,n){var i=t._helper.computePathLength(t._geometry.nodes.slice(0,n+1));return n===t._geometry.nodes.length-1&&(t._length=i),t._helper.formatLength(i)}),e.exit().remove()}},{key:"_onOverCircle",value:function(t,e,n){this._dragging||((0,p.select)(n).attr("r",6),this._options.tooltip&&this._tooltip.show(this._projectionUtility.latLngToContainerPoint(t),0===e?u.Config.tooltipText2:u.Config.tooltipText1))}},{key:"_onOutCircle",value:function(t,e){(0,p.select)(e).attr("r",5),this._hideTooltip()}},{key:"_onDragCircle",value:function(){var t=this,e=!1,n=(0,m.drag)().on("drag",function(n,i){e=!0,t._dragging=!0,(0,p.select)(this).attr("cx",p.event.x).attr("cy",p.event.y),t._updateLinePosition.call(t,t._linesBase,i),t._updateLinePosition.call(t,t._linesAux,i),t._options.showSegmentLength&&t._updateSegmentTextPosition(i),t._options.showAccumulativeLength&&t._updateNodeTextPosition(i),t._updateArea(i,t._projectionUtility.svgPointToLatLng([p.event.x,p.event.y]))});return n.on("start",function(e){p.event.sourceEvent.stopPropagation(),(0,p.select)(this).raise().attr("r",6),t._disableMapScroll()}),n.on("end",function(n,i){t._enableMapScroll(),e?(t._geometry.updateNode(i,t._projectionUtility.svgPointToLatLng([p.event.x,p.event.y])),t._showTooltipOnEvent(0===i?u.Config.tooltipText2:u.Config.tooltipText1)):i>0?(t._geometry.removeNode(i),(0,p.select)(this).classed("removed-circle",!0)):(t._geometry.addNode(n),t._dragged=!0),e=!1,t._dragging=!1,t._overlay.draw()}),n}},{key:"_onDragLine",value:function(){var t=this,e=!1,n=(0,m.drag)().on("drag",function(n,i){t._dragging=!0,e||(e=!0,t._geometry.insertNode(i+1,t._projectionUtility.svgPointToLatLng([p.event.x,p.event.y])),t._updateLine(),t._options.showSegmentLength&&t._updateSegmentText(),t._options.showAccumulativeLength&&t._updateNodeText()),t._updateHoverCirclePosition(p.event.x,p.event.y),t._updateLinePosition(t._linesBase,i+1),t._updateLinePosition(t._linesAux,i+1),t._options.showSegmentLength&&t._updateSegmentTextPosition(i+1),t._options.showAccumulativeLength&&t._updateNodeTextPosition(i+1),t._updateArea(i+1,t._projectionUtility.svgPointToLatLng([p.event.x,p.event.y]))});return n.on("start",function(){p.event.sourceEvent.stopPropagation(),t._hoverCircle.select("circle").attr("class","cover-circle"),t._disableMapScroll()}),n.on("end",function(n,i){t._enableMapScroll(),e&&(t._geometry.updateNode(i+1,t._projectionUtility.svgPointToLatLng([p.event.x,p.event.y])),t._hideHoverCircle(),t._overlay.draw(),e=!1,t._showTooltipOnEvent(u.Config.tooltipText1)),t._updateArea(i+1,t._projectionUtility.svgPointToLatLng([p.event.x,p.event.y])),t._hoverCircle.select("circle").attr("class","grey-circle"),t._dragging=!1}),n}},{key:"_updateLinePosition",value:function(t,e){e<this._geometry.lines.length&&t.select("line:nth-child("+(e+1)+")").attr("x1",p.event.x).attr("y1",p.event.y),e>0&&t.select("line:nth-child("+e+")").attr("x2",p.event.x).attr("y2",p.event.y)}},{key:"_updateSegmentTextPosition",value:function(t){var e=this;t<this._geometry.lines.length&&this._segmentText.select("text:nth-child("+(t+1)+")").attr("transform",function(t){var n=[p.event.x,p.event.y],i=e._projectionUtility.latLngToSvgPoint(t[1]);return x.default.transformText(n,i)}).text(function(t){return e._helper.formatLength(e._helper.computeLengthBetween(e._projectionUtility.svgPointToLatLng([p.event.x,p.event.y]),t[1]))}),t>0&&this._segmentText.select("text:nth-child("+t+")").attr("transform",function(t){var n=e._projectionUtility.latLngToSvgPoint(t[0]),i=[p.event.x,p.event.y];return x.default.transformText(n,i)}).text(function(t){return e._helper.formatLength(e._helper.computeLengthBetween(t[0],e._projectionUtility.svgPointToLatLng([p.event.x,p.event.y])))})}},{key:"_updateNodeTextPosition",value:function(t){var e=this;this._nodeText.select("text:nth-child("+(t+1)+")").attr("x",p.event.x).attr("y",function(){var n=void 0;return n=t>0&&e._projectionUtility.latLngToSvgPoint(e._geometry.nodes[t-1])[1]<p.event.y?23:-7,p.event.y+n}),this._nodeText.select("text:nth-child("+(t+2)+")").attr("y",function(n){var i=void 0;return i=t+1>0&&p.event.y<e._projectionUtility.latLngToSvgPoint(n)[1]?23:-7,e._projectionUtility.latLngToSvgPoint(n)[1]+i}),this._nodeText.selectAll("text").filter(function(e,n){return n>=t}).text(function(n,i){var r=e._helper.computePathLength([].concat(o(e._geometry.nodes.slice(0,t)),[e._projectionUtility.svgPointToLatLng([p.event.x,p.event.y])],o(e._geometry.nodes.slice(t+1,t+1+i))));return t+i===e._geometry.nodes.length-1&&(e._length=r),e._helper.formatLength(r)})}},{key:"_updateHoverCirclePosition",value:function(t,e){this._hoverCircle.select("circle").attr("cx",t).attr("cy",e),this._dragging||this._options.tooltip&&this._tooltip.show(this._projectionUtility.svgPointToContainerPoint([t,e]),u.Config.tooltipText2)}},{key:"_hideHoverCircle",value:function(){this._hoverCircle.select("circle").attr("cx",null).attr("cy",null),this._hideTooltip()}},{key:"_disableMapScroll",value:function(){this._zoomControl=!!document.querySelector("button[aria-label='Zoom 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diff --git a/package.json b/package.json
index 053b2bf..b39893c 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "measuretool-googlemaps-v3",
-  "version": "0.2.0",
+  "version": "0.2.1",
   "description": "A handy measurement widget for Google Maps API v3. The functionalities are implemented as close as to what current Google Maps offers.",
   "main": "lib/MeasureTool.min.js",
   "scripts": {