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| (function (window, mars3d) {
| //创建widget类，需要继承BaseWidget
| class MyWidget extends mars3d.widget.BaseWidget {
| //初始化[仅执行1次]
| create() {}
| //打开激活
| activate() {
| this._last_basemap = this.map.basemap?.uuid;
| this.map.basemap = 2017; //切换底图到深色底图
|
| this.map.setCameraView({ y: 27.495099, x: 118.717254, z: 1111008.3, heading: 349.8, pitch: -66.1, roll: 360 });
|
| var data = [
| { name: "六安市", value: 112, location: [116.3123, 31.8329] },
| { name: "安庆市", value: 424, location: [116.7517, 30.5255] },
| { name: "滁州市", value: 76, location: [118.1909, 32.536] },
| { name: "宣城市", value: 45, location: [118.8062, 30.6244] },
| { name: "阜阳市", value: 234, location: [115.7629, 32.9919] },
| { name: "宿州市", value: 110, location: [117.5208, 33.6841] },
| { name: "黄山市", value: 98, location: [118.0481, 29.9542] },
| { name: "巢湖市", value: 71, location: [117.7734, 31.4978] },
| { name: "亳州市", value: 165, location: [116.1914, 33.4698] },
| { name: "池州市", value: 12, location: [117.3889, 30.2014] },
| { name: "合肥市", value: 232, location: [117.29, 32.0581] },
| { name: "蚌埠市", value: 123, location: [117.4109, 33.1073] },
| { name: "芜湖市", value: 73, location: [118.3557, 31.0858] },
| { name: "淮北市", value: 16, location: [116.6968, 33.6896] },
| { name: "淮南市", value: 75, location: [116.7847, 32.7722] },
| { name: "马鞍山市", value: 45, location: [118.6304, 31.5363] },
| { name: "铜陵市", value: 93, location: [117.9382, 30.9375] },
| ];
|
| this.createEchartsLayer(data);
| }
| //关闭释放
| disable() {
| this.map.cancelFlight();
|
| if (this._last_basemap) {
| this.map.basemap = this._last_basemap; //还原底图
| this._last_basemap = null;
| }
| if (this.echartsLayer) {
| this.map.removeLayer(this.echartsLayer, true);
| this.echartsLayer = null;
| }
| }
|
| createEchartsLayer(data) {
| var options = this.getEchartsOption(data);
|
| var echartsLayer = new mars3d.layer.EchartsLayer(options);
| this.map.addLayer(echartsLayer);
|
| this.echartsLayer = echartsLayer;
| }
|
| getEchartsOption(data) {
| var brcolor = "#ffff00";
|
| //纬度做偏移处理,避免重叠
| if (data.length > 1) {
| data.sort(function (a, b) {
| return b.location[1] - a.location[1];
| });
| for (let i = 1; i < data.length; i++) {
| let thisItem = data[i].location;
|
| let ispy = false;
| for (let j = 0; j < i; j++) {
| let lastItem = data[j].location;
| let offX = Math.abs(lastItem[0] - thisItem[0]);
| let offY = Math.abs(lastItem[1] - thisItem[1]);
| if (offX < 0.025 && offY < 0.005) {
| ispy = true;
| break;
| }
| }
|
| if (ispy) {
| thisItem[1] -= 0.006; //偏移纬度
| }
|
| //console.log(data[i].name +','+thisItem.join(",")+','+ispy+','+offX+','+offY);
| }
| }
|
| var sum = 0;
| var dataVals = [];
| for (let i = 0; i < data.length; i++) {
| sum += data[i].value;
|
| dataVals.push({
| name: data[i].name,
| value: data[i].location.concat(data[i].value),
| });
| }
|
| var option = {
| name: this.config.name,
| pid: 99, //图层管理 中使用，父节点id
| clampToGround: true, //计算贴地高度
|
| animation: false,
| backgroundColor: "rgba(0, 0, 0, 0.4)",
| tooltip: {
| trigger: "item",
| },
| series: [
| {
| type: "effectScatter",
| coordinateSystem: "mars3dMap",
| data: dataVals,
| symbolSize: function (val) {
| if (sum === 0) {
| return 8;
| }
|
| var num = (val[2] / sum) * 150;
| return Math.max(num, 8);
| },
| showEffectOn: "render",
| rippleEffect: {
| brushType: "stroke",
| },
| hoverAnimation: true,
| label: {
| normal: {
| formatter: "{b}",
| position: "right",
| show: true,
| },
| },
| tooltip: {
| formatter: function (params, ticket, callback) {
| if (params.value[2] <= 0) {
| return params.name;
| } else {
| return params.name + " ： " + params.value[2];
| }
| },
| },
| itemStyle: {
| normal: {
| color: brcolor,
| shadowBlur: 60,
| shadowColor: "#cccccc",
| },
| },
| zlevel: 1,
| },
| ],
| };
| return option;
| }
| }
|
| //注册到widget管理器中。
| mars3d.widget.bindClass(MyWidget);
|
| //每个widet之间都是直接引入到index.html中，会存在彼此命名冲突，所以闭包处理下。
| })(window, mars3d);
|
|
