// 创建对象,保存每个城市的物流记录数量 var citylist = new Object(); // 创建方法,输入data坐标,绘制发射线 var moveto = function(city, data){ var pf = {x:projection([112.59,28.12])[0], y:projection([112.59,28.12])[1]}; var pt = {x:projection(data)[0], y:projection(data)[1]}; var distance = Math.sqrt((pt.x - pf.x)**2 + (pt.y - pf.y)**2); if (city in citylist){ citylist[city]++; }else{ mline.append("line") .attr("x1", pf.x) .attr("y1", pf.y) .attr("x2", pt.x) .attr("y2", pt.y) .attr("marker-end","url(#pointer)") .style("stroke-dasharray", " "+distance+", "+distance+" ") .transition() .duration(distance*30) .styleTween("stroke-dashoffset", function(){ return d3.interpolateNumber(distance, 0); }); citylist[city] = 1; }; mline.append("circle") .attr("cx", pf.x) .attr("cy", pf.y) .attr("r", 3) .transition() .duration(distance*30) .attr("transform", "translate("+(pt.x-pf.x)+","+(pt.y-pf.y)+")") .remove(); };
创建动画队例,实现标记外圈的闪烁效果
var scale = d3.scaleLinear(); scale.domain([0, 1000, 2000]) .range([0, 1, 0]); var start = Date.now(); d3.timer(function(){ var s1 = scale((Date.now() - start)%2000); // console.log(s1); gmap.select("circle#changshaC") .attr("stroke-opacity", s1); marker.select("circle#markerC") .attr("stroke-opacity", s1); });
创建测试按钮和测试的目标城市数据
var cityordinate = { '哈尔滨':[126.5416150000,45.8088260000], '石家庄':[116.46,39.92], '北京':[116.39564503787867,39.92998577808024], '上海':[121.480539,31.235929], '广州':[113.271431,23.135336], '重庆':[106.558434,29.568996], '青岛':[120.38442818368189,36.10521490127382], '福州':[119.30347,26.080429], '兰州':[103.840521,36.067235], '贵阳':[106.636577,26.653325], '成都':[104.081534,30.655822], '西安':[108.946466,34.347269], '长春':[125.3306020000,43.8219540000], '台湾':[120.961454,23.80406], '呼和浩特':[111.7555090000,40.8484230000], '澳门':[113.5494640000,22.1929190000], '武汉':[114.3115820000,30.5984670000], '昆明':[102.71460113878045,25.049153100453159], '乌鲁木齐':[87.56498774111579,43.84038034721766], '益阳':[112.36654664522563,28.58808777988717], '南京':[118.77807440802562,32.05723550180587], '武昌':[114.35362228468498,30.56486029278519], }; // 随机获得目标城市 var cityname = [], total = 0; for (var key in cityordinate){ cityname[total++] = key; }; // 创建操作按钮,每次点击发射一条物流线 button.append("circle") .attr("cx", width*0.9) .attr("cy", height*0.8) .attr("r", width/20) .attr("text","click") .attr("fill", "grey"); button.append("text") .attr("x", width*0.87) .attr("y", height*0.81) .style("font-size", "30px") .text("click"); button.on("click", function(){ var _index = ~~(Math.random() * total); moveto(cityname[_index], cityordinate[cityname[_index]]); });
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