一、實現的效果

二、具體步驟

1.安裝依賴

npm install echarts?

2.引入echarts

import * as echarts from 'echarts';

?注意：這里需要用到echarts-gl，必須單獨引入才可以

import 'echarts-gl';

3.echarts部分代碼

我知道這部分內容很多，但只要cv去用就可以了，getParametricEquation這個函數不用改(我也不知道咋改。。。反正我沒動過）；getPie3D函數根據自己的需求稍微改一下option配置就好，其余的可以不用管

 // 顏色列表const colorList = ['rgba(76, 139, 241, 0.9)','rgba(101, 193, 241, 0.9)','rgba(249, 215, 114, 0.9)','rgba(179, 186, 195, 0.9)','rgba(255, 255, 255,  0.9)','rgba(145, 186, 217, 0.9)',];// 生成扇形的曲面參數方程，用于 series-surface.parametricEquationfunction getParametricEquation(startRatio: any, endRatio: any, isSelected: any, isHovered: any, k: any, h: any) {// 計算let midRatio = (startRatio + endRatio) / 2;let startRadian = startRatio * Math.PI * 2;let endRadian = endRatio * Math.PI * 2;let midRadian = midRatio * Math.PI * 2;// 如果只有一個扇形，則不實現選中效果。// if (startRatio === 0 && endRatio === 1) {//     isSelected = false;// }isSelected = false;// 通過扇形內徑/外徑的值，換算出輔助參數 k（默認值 1/3）k = typeof k !== 'undefined' ? k : 1 / 3;// 計算選中效果分別在 x 軸、y 軸方向上的位移（未選中，則位移均為 0）let offsetX = isSelected ? Math.sin(midRadian) * 0.1 : 0;let offsetY = isSelected ? Math.cos(midRadian) * 0.1 : 0;// 計算高亮效果的放大比例（未高亮，則比例為 1）let hoverRate = isHovered ? 1.05 : 1;// 返回曲面參數方程return {u: {min: -Math.PI,max: Math.PI * 3,step: Math.PI / 32,},v: {min: 0,max: Math.PI * 2,step: Math.PI / 20,},x: function (u: any, v: any) {if (u < startRadian) {return offsetX + Math.cos(startRadian) * (1 + Math.cos(v) * k) * hoverRate;}if (u > endRadian) {return offsetX + Math.cos(endRadian) * (1 + Math.cos(v) * k) * hoverRate;}return offsetX + Math.cos(u) * (1 + Math.cos(v) * k) * hoverRate;},y: function (u: any, v: any) {if (u < startRadian) {return offsetY + Math.sin(startRadian) * (1 + Math.cos(v) * k) * hoverRate;}if (u > endRadian) {return offsetY + Math.sin(endRadian) * (1 + Math.cos(v) * k) * hoverRate;}return offsetY + Math.sin(u) * (1 + Math.cos(v) * k) * hoverRate;},z: function (u: any, v: any) {if (u < -Math.PI * 0.5) {return Math.sin(u);}if (u > Math.PI * 2.5) {return Math.sin(u) * h * 0.1;}return Math.sin(v) > 0 ? 1 * h * 0.1 : -1;},};}// 生成模擬 3D 餅圖的配置項function getPie3D(pieData: any, internalDiameterRatio: any) {let series = [];let sumValue = 0;let startValue = 0;let endValue = 0;let legendData = [];let k = typeof internalDiameterRatio !== 'undefined' ? (1 - internalDiameterRatio) / (1 + internalDiameterRatio) : 1 / 3;// 為每一個餅圖數據，生成一個 series-surface 配置for (let i = 0; i < pieData.length; i++) {sumValue += pieData[i].value;let seriesItem: any = {name: typeof pieData[i].name === 'undefined' ? `series${i}` : pieData[i].name,type: 'surface',parametric: true,wireframe: {show: false,},pieData: pieData[i],pieStatus: {selected: false,hovered: false,k: 1 / 10,},};if (typeof pieData[i].itemStyle != 'undefined') {let itemStyle: any = {};typeof pieData[i].itemStyle.color != 'undefined' ? (itemStyle.color = pieData[i].itemStyle.color) : null;typeof pieData[i].itemStyle.opacity != 'undefined' ? (itemStyle.opacity = pieData[i].itemStyle.opacity) : null;seriesItem.itemStyle = itemStyle;}series.push(seriesItem);}// 使用上一次遍歷時，計算出的數據和 sumValue，調用 getParametricEquation 函數，// 向每個 series-surface 傳入不同的參數方程 series-surface.parametricEquation，也就是實現每一個扇形。for (let i = 0; i < series.length; i++) {endValue = startValue + series[i].pieData.value;series[i].pieData.startRatio = startValue / sumValue;series[i].pieData.endRatio = endValue / sumValue;series[i].parametricEquation = getParametricEquation(series[i].pieData.startRatio,series[i].pieData.endRatio,false,false,k,series[i].pieData.value);startValue = endValue;legendData.push(series[i].name);}series.push({name: 'mouseoutSeries',type: 'surface',parametric: true,wireframe: {show: false,},itemStyle: {opacity: 0.2,color: 'rgba(165, 247, 253, 1)',},parametricEquation: {u: {min: 0,max: Math.PI * 2,step: Math.PI / 20,},v: {min: 0,max: Math.PI / 4,step: Math.PI / 20,},x: function (u: any, v: any) {return ((Math.sin(v) * Math.sin(u) + Math.sin(u)) / Math.PI) * 2.5;},y: function (u: any, v: any) {return ((Math.sin(v) * Math.cos(u) + Math.cos(u)) / Math.PI) * 2.5;},z: function (u: any, v: any) {return Math.cos(v) > 0 ? -3 : -3;},},});// 準備待返回的配置項，把準備好的 legendData、series 傳入。let option = {legend: {icon: 'circle',orient: 'vertical',data: pieData.map((dItem: any, dIndex: any) => {return {...dItem,textStyle: {rich: {percent: {color: colorList[dIndex],},},},};}),right: '5%',top: '20%',itemGap: 10,itemWidth: 12,itemHeight: 12,selectedMode: false, // 關閉圖例選擇textStyle: {color: '#fff',fontSize: 14,fontFamily: 'Source Han Sans CN',rich: {name: {color: '#FFF',fontSize: 18,width: 50,padding: [0, 0, 0, 10],},value: {color: '#2BDFD4',fontSize: 20,width: 50,padding: [0, 0, 0, 20],},percent: {color: '#2BDFD4',fontSize: 24,padding: [0, 0, 0, 20],},unit: {color: '#ACDCE4',fontSize: 24,padding: [0, 0, 0, 5],},},},formatter: (name: any) => {let obj = pieData.find((item: any) => item.name === name);let datas = pieData;let total = 0;let target = obj.value;for (let i = 0; i < datas.length; i++) {total += Number(datas[i].value);}const arr = [`{name|${name}}{value|${obj.value}次}{percent|${((target / total) * 100).toFixed(0)}}{unit|%}`];return arr.join('');},},xAxis3D: {},yAxis3D: {},zAxis3D: {},grid3D: {viewControl: {autoRotate: true, // 自動旋轉},left: '4%',width: '45%',show: false,boxHeight: 30,// boxWidth和boxDepth這兩個屬性值保持一致，才可以在調整餅圖寬度的時候保持水平，不然就會歪歪扭扭boxWidth: 130,boxDepth: 130,},series: series,};return option;}const data = [{name: 'PM2.5',value: 134,},{name: 'VOC',value: 56,},{name: 'T',value: 57,},{name: 'CH2O',value: 36,},{name: 'CO2',value: 51,},{name: 'RH',value: 51,},];const serData = data.map((dItem, index) => {return {...dItem,value: Number(dItem.value),itemStyle: {color: colorList[index],},};});// 傳入數據生成 optionlet option = getPie3D(serData, 0.7);

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