代码如下:
<template>
<div>
<div ref="c1_chart" style="width: 100%; height: 205px; top: -30px"></div>
</div>
</template>
<script>
import * as echarts from 'echarts'
import 'echarts-gl'
export default {
data() {
return {
radio: '横向部门',
optionData: [
{
name: '调取成功',
value: 1680,
itemStyle: {
color: '#4590ff'
}
},
{
name: '调取失败',
value: 80,
itemStyle: {
color: '#ff7575'
}
}
],
statusChart: null,
option: {}
}
},
mounted() {
this.$nextTick(() => {
this.initChart1()
})
},
methods: {
initChart1() {
this.statusChart = echarts.init(this.$refs.c1_chart)
// 传入数据生成 option, 构建3d饼状图, 参数工具文件已经备注的很详细
this.option = getPie3D(this.optionData, 0.9, 180, 40, 18, 1)
this.statusChart.setOption(this.option)
// 是否需要label指引线,如果要就添加一个透明的2d饼状图并调整角度使得labelLine和3d的饼状图对齐,并再次setOption
this.option.series.push({
name: '信用评价', // 自己根据场景修改
backgroundColor: 'transparent',
type: 'pie',
label: {
opacity: 1,
fontSize: 13,
lineHeight: 20
},
startAngle: -20, // 起始角度,支持范围[0, 360]。
clockwise: false, // 饼图的扇区是否是顺时针排布。上述这两项配置主要是为了对齐3d的样式
radius: ['20%', '60%'],
center: ['50%', '50%'],
data: this.optionData,
itemStyle: {
opacity: 0 // 这里必须是0,不然2d的图会覆盖在表面
}
})
this.statusChart.setOption(this.option)
// this.bindListen(this.statusChart)
function getPie3D (
pieData,
internalDiameterRatio,
distance,
alpha,
pieHeight,
opacity = 1
) {
const series = []
let sumValue = 0
let startValue = 0
let endValue = 0
let legendData = []
let legendBfb = []
const k = 1 - internalDiameterRatio
pieData.sort((a, b) => {
return b.value - a.value
})
// 为每一个饼图数据,生成一个 series-surface 配置
for (let i = 0; i < pieData.length; i++) {
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
},
center: ['10%', '50%']
}
if (typeof pieData[i].itemStyle !== 'undefined') {
const itemStyle = {}
itemStyle.color =
typeof pieData[i].itemStyle.color !== 'undefined'
? pieData[i].itemStyle.color
: opacity
itemStyle.opacity =
typeof pieData[i].itemStyle.opacity !== 'undefined'
? pieData[i].itemStyle.opacity
: 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。
legendData = []
legendBfb = []
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
const bfb = fomatFloat(series[i].pieData.value / sumValue, 4)
legendData.push({
name: series[i].name,
value: bfb
})
legendBfb.push({
name: series[i].name,
value: bfb
})
}
const boxHeight = getHeight3D(series, pieHeight) // 通过pieHeight设定3d饼/环的高度,单位是px
// 准备待返回的配置项,把准备好的 legendData、series 传入。
const option = {
legend: {
data: legendData,
bottom: 0,
textStyle: {
color: '#333',
fontSize: 12
}
},
labelLine: {
show: true,
lineStyle: {
color: '#ddd'
}
},
label: {
show: true,
position: 'outside',
// formatter: '{b} \n{c}次'
formatter: '{c}次'
},
tooltip: {
backgroundColor: '#fff',
borderColor: '#21f2c4',
textStyle: {
color: '#333',
fontSize: 13
},
formatter: (params) => {
console.log('pie', params)
if (
params.seriesName !== 'mouseoutSeries' &&
params.seriesName !== '信用评价'
) {
// console.log(option.series,params.seriesName,'option.series[params.seriesIndex].pieData');
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}%`
)
}
}
},
xAxis3D: {
min: -1,
max: 1
},
yAxis3D: {
min: -1,
max: 1
},
zAxis3D: {
min: -1,
max: 1
},
grid3D: {
show: false,
boxHeight: boxHeight, // 圆环的高度
viewControl: {
// 3d效果可以放大、旋转等,请自己去查看官方配置
alpha, // 角度
distance, // 调整视角到主体的距离,类似调整zoom
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
}
return option
}
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 = typeof k !== 'undefined' ? k : 1 / 3
// 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 getHeight3D (series, height) {
series.sort((a, b) => {
return b.pieData.value - a.pieData.value
})
return (height * 25) / series[0].pieData.value
}
function fomatFloat (num, n) {
let f = parseFloat(num)
if (isNaN(f)) {
return false
}
f = Math.round(num * Math.pow(10, n)) / Math.pow(10, n) // n 幂
let s = f.toString()
let rs = s.indexOf('.')
// 判定如果是整数,增加小数点再补0
if (rs < 0) {
rs = s.length
s += '.'
}
while (s.length <= rs + n) {
s += '0'
}
return s
}
}
}
}
</script>
<style lang="scss" scoped></style>