3D echarts饼图
drawLine3(id) {
this.charts3 = this.$echarts.init(document.getElementById(id))
// eslint-disable-next-line no-unused-vars
this.personChartListData =
[{
name: 'itema项目A',
value: 666
}, {
name: 'itemb项目B',
value: 1570
}]
const colorList = ['#00d8ff', '#018ef1', '#f8bc87', '#ffa130', '#c23531']
const pieData = []
for (let i = 0; i < this.personChartListData.length; i++) {
const item = {
name: this.personChartListData[i].name,
value: this.personChartListData[i].value,
itemStyle: {
color: colorList[i]
}
}
pieData.push(item)
}
var option = this.getPie3D(pieData, 0.59)
this.charts3.setOption(option)
},
getPie3D(pieData, internalDiameterRatio) {
debugger
const series = []
let sumValue = 0
let startValue = 0
let endValue = 0
const legendData = []
const k =
typeof internalDiameterRatio !== 'undefined'
? (1 - internalDiameterRatio) / (1 + internalDiameterRatio)
: 1 / 3
// 为每一个饼图数据,生成一个 series-surface 配置
for (let i = 0; i < pieData.length; i++) {
sumValue += pieData[i].value
const seriesItem = {
name: typeof pieData[i].name === 'undefined'
? `series${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 = {}
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
console.log(itemStyle)
/* itemStyle: {
normal: {
label: {
show: true,
position: 'top'
}
}
}*/
}
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 ,也就是实现每一个扇形。
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 = this.getParametricEquation(
series[i].pieData.startRatio,
series[i].pieData.endRatio,
true,
false,
1
)
startValue = endValue
legendData.push(series[i].name)
}
// 补充一个透明的圆环,用于支撑高亮功能的近似实现。
series.push({
name: 'mouseoutSeries',
type: 'surface',
parametric: true,
wireframe: {
show: false
},
itemStyle: {
opacity: 1,
color: 'rgba(18,236,252,.5)'
},
parametricEquation: {
u: {
min: 0,
max: Math.PI * 2,
step: Math.PI / 20
},
v: {
min: 0,
max: Math.PI,
step: Math.PI / 1.4
},
x: function(u, v) {
return Math.sin(v) * Math.sin(u) + Math.sin(u)
},
y: function(u, v) {
return Math.sin(v) * Math.cos(u) + Math.cos(u)
},
z: function(u, v) {
return Math.cos(v) > 0 ? 0.1 : -0.1
}
}
})
// 准备待返回的配置项,把准备好的 legendData、series 传入。
const option = {
// animation: false,
legend: {
show: true,
data: legendData
},
tooltip: {
formatter: params => {
if (params.seriesName !== 'mouseoutSeries') {
return `${params.seriesName}<br/><span style="display:inline-block;margin-right:5px;border-radius:10px;width:10px;height:10px;background-color:${};"></span>${option.series[params.seriesIndex].pieData.value}`
}
}
},
xAxis3D: {
min: -1.3,
max: 1.3
},
yAxis3D: {
min: -1.3,
max: 1.3
},
zAxis3D: {
min: -1.3,
max: 1.3
},
grid3D: {
show: false,
boxHeight: 10,
// top: '30%',
left: '0',
bottom: '50%',
viewControl: {
// 3d效果可以放大、旋转等,请自己去查看官方配置
alpha: 20,
// beta: 40,
rotateSensitivity: 0,
zoomSensitivity: 0,
panSensitivity: 0,
autoRotate: true
// autoRotateSpeed: 5,
// autoRotateAfterStill: 10
}
},
series: series
}
return option
},
getParametricEquation(startRatio, endRatio, isSelected, isHovered, k) {
// 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)
}
return Math.sin(v) > 0 ? 1 : -1
}
}
}