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/**
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* 绘制3d图
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* @param pieData 总数据
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* @param internalDiameterRatio:透明的空心占比
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* @param distance 视角到主体的距离
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* @param alpha 旋转角度
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* @param pieHeight 立体的高度
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* @param opacity 饼或者环的透明度
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*/
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const getPie3D = (pieData, internalDiameterRatio, distance, alpha, pieHeight, opacity = 1) => {
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if(pieData.length <0){
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return
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}
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console.log(pieData)
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const series = []
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let sumValue = 0
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let startValue = 0
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let endValue = 0
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let legendData = []
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let legendBfb = []
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const k = 1 - internalDiameterRatio
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pieData.sort((a, b) => {
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return b.value - a.value
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})
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// 为每一个饼图数据,生成一个 series-surface 配置
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for (let i = 0; i < pieData.length; i++) {
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sumValue += pieData[i].value
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const seriesItem = {
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name:
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typeof pieData[i].name === 'undefined'
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? `series${i}`
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: pieData[i].name,
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type: 'surface',
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parametric: true,
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wireframe: {
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show: false
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},
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pieData: pieData[i],
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pieStatus: {
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selected: false,
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hovered: false,
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k: k
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},
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center: ['10%', '50%']
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}
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if (typeof pieData[i].itemStyle !== 'undefined') {
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const itemStyle = {}
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itemStyle.color =
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typeof pieData[i].itemStyle.color !== 'undefined'
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? pieData[i].itemStyle.color
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: opacity
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itemStyle.opacity =
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typeof pieData[i].itemStyle.opacity !== 'undefined'
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? pieData[i].itemStyle.opacity
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: opacity
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seriesItem.itemStyle = itemStyle
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}
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series.push(seriesItem)
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}
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// 使用上一次遍历时,计算出的数据和 sumValue,调用 getParametricEquation 函数,
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// 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。
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legendData = []
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legendBfb = []
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for (let i = 0; i < series.length; i++) {
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endValue = startValue + series[i].pieData.value
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series[i].pieData.startRatio = startValue / sumValue
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series[i].pieData.endRatio = endValue / sumValue
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series[i].parametricEquation = getParametricEquation(
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series[i].pieData.startRatio,
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series[i].pieData.endRatio,
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false,
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false,
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k,
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series[i].pieData.value
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)
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startValue = endValue
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const bfb = fomatFloat(series[i].pieData.value / sumValue, 4)
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legendData.push({
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name: series[i].name,
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value: bfb
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})
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legendBfb.push({
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name: series[i].name,
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value: bfb
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})
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}
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const boxHeight = getHeight3D(series, pieHeight) // 通过pieHeight设定3d饼/环的高度,单位是px
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// 准备待返回的配置项,把准备好的 legendData、series 传入。
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const option = {
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legend: {
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show: false,
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data: legendData,
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orient: 'vertical',
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left: 10,
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top: 10,
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itemGap: 10,
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textStyle: {
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color: '#A1E2FF'
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},
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icon: 'circle',
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formatter: function (param) {
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const item = legendBfb.filter(item => item.name === param)[0]
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const bfs = fomatFloat(item.value * 100, 2) + '%'
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return `${item.name} ${bfs}`
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}
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},
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labelLine: {
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show: true,
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lineStyle: {
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color: '#fff'
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}
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},
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label: {
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show: true,
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position: 'outside',
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formatter: '{b} \n{c} {d}%'
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},
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tooltip: {
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backgroundColor: '#033b77',
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borderColor: '#21f2c4',
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textStyle: {
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color: '#fff',
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fontSize: 13
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},
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formatter: params => {
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if (
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params.seriesName !== 'mouseoutSeries' &&
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params.seriesName !== 'pie2d'
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) {
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const bfb = (
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(option.series[params.seriesIndex].pieData.endRatio -
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option.series[params.seriesIndex].pieData.startRatio) *
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100
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).toFixed(2)
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return (
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`${params.seriesName}<br/>` +
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`<span style="display:inline-block;margin-right:5px;border-radius:10px;width:10px;height:10px;background-color:${params.color};"></span>` +
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`${bfb}%`
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)
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}
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}
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},
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xAxis3D: {
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min: -1,
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max: 1
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},
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yAxis3D: {
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min: -1,
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max: 1
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},
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zAxis3D: {
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min: -1,
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max: 1
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},
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grid3D: {
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show: false,
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boxHeight: boxHeight,
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// boxWidth:180, // 圆环的高度
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viewControl: {
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// 3d效果可以放大、旋转等,请自己去查看官方配置
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alpha, // 角度
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distance, // 调整视角到主体的距离,类似调整zoom
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rotateSensitivity: 0, // 设置为0无法旋转
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zoomSensitivity: 0, // 设置为0无法缩放
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panSensitivity: 0, // 设置为0无法平移
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autoRotate: false // 自动旋转
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}
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},
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series: series
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}
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return option
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}
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/**
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* 生成扇形的曲面参数方程,用于 series-surface.parametricEquation
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*/
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const getParametricEquation = (startRatio, endRatio, isSelected, isHovered, k, h) => {
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// 计算
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const midRatio = (startRatio + endRatio) / 2
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const startRadian = startRatio * Math.PI * 2
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const endRadian = endRatio * Math.PI * 2
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const midRadian = midRatio * Math.PI * 2
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// 如果只有一个扇形,则不实现选中效果。
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if (startRatio === 0 && endRatio === 1) {
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isSelected = false
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}
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// 通过扇形内径/外径的值,换算出辅助参数 k(默认值 1/3)
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k = typeof k !== 'undefined' ? k : 1 / 3
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// 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)
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const offsetX = isSelected ? Math.cos(midRadian) * 0.1 : 0
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const offsetY = isSelected ? Math.sin(midRadian) * 0.1 : 0
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// 计算高亮效果的放大比例(未高亮,则比例为 1)
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const hoverRate = isHovered ? 1.05 : 1
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// 返回曲面参数方程
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return {
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u: {
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min: -Math.PI,
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max: Math.PI * 3,
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step: Math.PI / 32
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},
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v: {
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min: 0,
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max: Math.PI * 2,
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step: Math.PI / 20
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},
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x: function (u, v) {
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if (u < startRadian) {
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return (
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offsetX +
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Math.cos(startRadian) * (1 + Math.cos(v) * k) * hoverRate
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)
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}
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if (u > endRadian) {
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return (
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offsetX + Math.cos(endRadian) * (1 + Math.cos(v) * k) * hoverRate
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)
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}
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return offsetX + Math.cos(u) * (1 + Math.cos(v) * k) * hoverRate
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},
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y: function (u, v) {
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if (u < startRadian) {
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return (
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offsetY +
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Math.sin(startRadian) * (1 + Math.cos(v) * k) * hoverRate
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)
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}
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if (u > endRadian) {
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return (
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offsetY + Math.sin(endRadian) * (1 + Math.cos(v) * k) * hoverRate
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)
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}
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return offsetY + Math.sin(u) * (1 + Math.cos(v) * k) * hoverRate
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},
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z: function (u, v) {
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if (u < -Math.PI * 0.5) {
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return Math.sin(u)
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}
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if (u > Math.PI * 2.5) {
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return Math.sin(u) * h * 0.1
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}
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return Math.sin(v) > 0 ? 1 * h * 0.1 : -1
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}
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}
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}
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/**
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* 获取3d丙图的最高扇区的高度
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*/
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const getHeight3D = (series, height) => {
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series.sort((a, b) => {
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return b.pieData.value - a.pieData.value
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})
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return (height * 25) / series[0].pieData.value
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}
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/**
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* 格式化浮点数
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*/
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const fomatFloat = (num, n) => {
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let f = parseFloat(num)
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if (isNaN(f)) {
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return false
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}
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f = Math.round(num * Math.pow(10, n)) / Math.pow(10, n) // n 幂
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let s = f.toString()
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let rs = s.indexOf('.')
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// 判定如果是整数,增加小数点再补0
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if (rs < 0) {
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rs = s.length
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s += '.'
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}
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while (s.length <= rs + n) {
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s += '0'
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}
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return s
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}
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export { getPie3D, getParametricEquation } |