<template> <div> <div id="box" ref="piecharts"></div> </div> </template> <script> import * as echarts from 'echarts' import 'echarts-gl' export default { data() { return { statusChart: null, data1: '' } }, mounted() { this.initChart() }, methods: { initChart() { var myChart = echarts.init(document.getElementById('box')) // 生成扇形的曲面参数方程,用于 series-surface.parametricEquation function getParametricEquation(startRatio, endRatio, isSelected, isHovered, k, h) { // 计算 const midRatio = (startRatio + endRatio) / 2 const startRadian = startRatio * Math.PI * 2 const endRadian = endRatio * Math.PI * 2 const midRadian = midRatio * Math.PI * 2 // 如果只有一个扇形,则不实现选中效果。 if (startRatio === 0 && endRatio === 1) { isSelected = false } // 通过扇形内径/外径的值,换算出辅助参数 k(默认值 1/3) k = 1 // 计算选中效果分别在 x 轴、y 轴方向上的位移(未选中,则位移均为 0) const offsetX = isSelected ? Math.cos(midRadian) * 0.1 : 0 const offsetY = isSelected ? Math.sin(midRadian) * 0.1 : 0 // 计算高亮效果的放大比例(未高亮,则比例为 1) const hoverRate = isHovered ? 1.05 : 1 // 返回曲面参数方程 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, v) { 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, v) { 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, v) { 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 } } } function getPie3D(pieData, internalDiameterRatio, distance, alpha, pieHeight, opacity = 1) { const series = [] let sumValue = 0 let startValue = 0 let endValue = 0 const legendData = [] const k = typeof internalDiameterRatio !== 'undefined' ? (1 - internalDiameterRatio) / (1 + internalDiameterRatio) : 1 / 3 // 为每一个饼图数据,生成一个 series-surface 配置 for (let i = 0; i < pieData.length; i += 1) { sumValue += pieData[i].value const seriesItem = { 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: k } } if (typeof pieData[i].itemStyle !== 'undefined') { const itemStyle = {} if (typeof pieData[i].itemStyle.color !== 'undefined') { itemStyle.color = pieData[i].itemStyle.color } if (typeof pieData[i].itemStyle.opacity !== 'undefined') { itemStyle.opacity = pieData[i].itemStyle.opacity } seriesItem.itemStyle = itemStyle } series.push(seriesItem) } // 使用上一次遍历时,计算出的数据和 sumValue,调用 getParametricEquation 函数, // 向每个 series-surface 传入不同的参数方程 series-surface.parametricEquation,也就是实现每一个扇形。 for (let i = 0; i < series.length; i += 1) { endValue = startValue + series[i].pieData.value series[i].pieData.startRatio = startValue / sumValue series[i].pieData.endRatio = endValue / sumValue console.log(series[i].pieData.startRatio, series[i].pieData.endRatio, false, false, k, series[i].pieData.value) 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) } return series } const optionsData = [ { name: 'aa', value: 11, itemStyle: { color: '#41adf8' // opacity: 1, } }, { name: 'cc', value: 33, itemStyle: { color: '#ffa100' // opacity: 1, } }, { name: 'bb', value: 22, itemStyle: { color: '#2acf81' // opacity: 1, } } ] const series = getPie3D(optionsData, 0.8, 240, 28, 26, 0.5) series.push({ name: 'pie2d', type: 'pie', label: { opacity: 1, fontSize: 13, lineHeight: 20 }, labelLine: { length: 30, length2: 30 }, startAngle: -30, clockwise: false, radius: ['20%', '50%'], center: ['50%', '50%'], data: optionsData, itemStyle: { opacity: 0 } }) const option = { legend: { tooltip: { show: true }, data: ['aa', 'bb', 'cc'], bottom: '10%', textStyle: { color: '#fff', fontSize: 12 } }, tooltip: { formatter: (params) => { if (params.seriesName !== 'mouseoutSeries' && params.seriesName !== 'pie2d') { const bfb = ( (option.series[params.seriesIndex].pieData.endRatio - option.series[params.seriesIndex].pieData.startRatio) * 100 ).toFixed(2) return ( `${params.seriesName}<br/>` + `<span style="display:inline-block;margin-right:5px;border-radius:10px;width:10px;height:10px;background-color:${params.color};"></span>` + `${bfb}%` ) } } }, title: { text: '3D 饼图', x: 'center', top: '20', textStyle: { color: '#fff', fontSize: 22 } }, backgroundColor: '#333', labelLine: { show: true, lineStyle: { color: '#7BC0CB' } }, label: { show: true, position: 'outside', formatter: '{b} \n{c} {d}%' }, xAxis3D: { min: -1, max: 1 }, yAxis3D: { min: -1, max: 1 }, zAxis3D: { min: -1, max: 1 }, grid3D: { show: false, boxHeight: 30, // 三维笛卡尔坐标系在三维场景中的高度 viewControl: { alpha: 40, beta: 40, distance: 500, rotateSensitivity: 0, // 设置为0无法旋转 zoomSensitivity: 0, // 设置为0无法缩放 panSensitivity: 0, // 设置为0无法平移 autoRotate: false // 自动旋转 } }, series: series } myChart.setOption(option) } } } </script> <style> #box { height: 500px; width: 500px; } </style>
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注意:在使用一些3d类的echart的时候会发现报下面的错误
这个是因为echarts引用3d图形需要引入echarts和echarts-gl (这里我们可能会遗漏掉引入echarts-gl)
要注意不同版本echarts对应不同版本echarts-gl 【如果版本不匹配就重新安装对应版版本】
“echarts”: “^4.9.0” ===> “echarts-gl”: “^1.1.2” “echarts”: “^5.2.0” ===> “echarts-gl”: “^2.0.8”
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