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static/CurveLine.min.js

+var BMapLib=window.BMapLib=BMapLib||{};(function(){BMapLib.CurveLine=CurveLine;function CurveLine(points,opts){var self=this;var curvePoints=getCurvePoints(points);var polyline=new BMap.Polyline(curvePoints,opts);polyline.addEventListener("lineupdate",function(){if(this.isEditing){this.enableEditing()}});polyline.cornerPoints=points;polyline.editMarkers=[];polyline.enableEditing=function(){var self=this;if(self.map){self.disableEditing();for(var i=0;i<self.cornerPoints.length;i++){var marker=new BMap.Marker(self.cornerPoints[i],{icon:new BMap.Icon("http://api.map.baidu.com/library/CurveLine/1.5/src/circle.png",new BMap.Size(16,16)),enableDragging:true,raiseOnDrag:true});marker.addEventListener("dragend",function(){self.cornerPoints.length=0;for(var i=0;i<self.editMarkers.length;i++){self.cornerPoints.push(self.editMarkers[i].getPosition())}var curvePoints=getCurvePoints(self.cornerPoints);self.setPath(curvePoints)});marker.index=i;self.editMarkers.push(marker);self.map.addOverlay(marker)}}self.isEditing=true};polyline.disableEditing=function(){this.isEditing=false;for(var i=0;i<this.editMarkers.length;i++){this.map.removeOverlay(this.editMarkers[i]);this.editMarkers[i]=null}this.editMarkers.length=0};polyline.getPath=function(){return curvePoints};return polyline}function extend(child,parent){for(var p in parent){if(parent.hasOwnProperty(p)){child[p]=parent[p]}}return child}function getCurvePoints(points){var curvePoints=[];for(var i=0;i<points.length-1;i++){var p=getCurveByTwoPoints(points[i],points[i+1]);if(p&&p.length>0){curvePoints=curvePoints.concat(p)}}return curvePoints}function getCurveByTwoPoints(obj1,obj2){if(!obj1||!obj2||!(obj1 instanceof BMap.Point)||!(obj2 instanceof BMap.Point)){return null}var B1=function(x){return 1-2*x+x*x};var B2=function(x){return 2*x-2*x*x};var B3=function(x){return x*x};curveCoordinates=[];var count=30;var isFuture=false;var t,h,h2,lat3,lng3,j,t2;var LnArray=[];var i=0;var inc=0;if(typeof(obj2)=="undefined"){if(typeof(curveCoordinates)!="undefined"){curveCoordinates=[]}return}var lat1=parseFloat(obj1.lat);var lat2=parseFloat(obj2.lat);var lng1=parseFloat(obj1.lng);var lng2=parseFloat(obj2.lng);if(lng2>lng1){if(parseFloat(lng2-lng1)>180){if(lng1<0){lng1=parseFloat(180+180+lng1)}}}if(lng1>lng2){if(parseFloat(lng1-lng2)>180){if(lng2<0){lng2=parseFloat(180+180+lng2)}}}j=0;t2=0;if(lat2==lat1){t=0;h=lng1-lng2}else{if(lng2==lng1){t=Math.PI/2;h=lat1-lat2}else{t=Math.atan((lat2-lat1)/(lng2-lng1));h=(lat2-lat1)/Math.sin(t)}}if(t2==0){t2=(t+(Math.PI/5))}h2=h/2;lng3=h2*Math.cos(t2)+lng1;lat3=h2*Math.sin(t2)+lat1;for(i=0;i<count+1;i++){curveCoordinates.push(new BMap.Point((lng1*B1(inc)+lng3*B2(inc))+lng2*B3(inc),(lat1*B1(inc)+lat3*B2(inc)+lat2*B3(inc))));inc=inc+(1/count)}return curveCoordinates}})();
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