3d环形图看着效果和2d 显示效果好点,所以咱也研究研究 3d环形图和环形图写法差的多点,使用echarts@5和echarts-gl@2 下面是找的demo,稍做加工下,效果如下
<template>
<div id="main-3d-chart"></div>
</template>
<script>
import * as $echarts from 'echarts'
import 'echarts-gl'
export default {
name: "pieChart3d",
props: {
echartsData: {
type: Array,
default: () => []
},
},
data() {
return {
selectedIndex: "",
hoveredIndex: "",
pieData: [],
echartsInstance: null,
centerTitleX: '29%',
centerTitleY: '30%',
centerTitle: '总数',
option: [],
colors: ['#93DBFF','#5AF3B8', '#4D74FF', '#FF9931']
};
},
mounted() {
this.$nextTick(() => {
this.echartsData.forEach((item, index) => {
item.itemStyle = {
color: this.colors[index%this.colors.length],
}
})
this.initEcharts()
})
},
beforeMount(){
this.echartsInstance && this.echartsInstance.off("mouseover",this.mouseover)
this.echartsInstance && this.echartsInstance.off("globalout",this.globalout)
},
methods: {
initEcharts() {
this.echartsInstance = $echarts.init(document.getElementById("main-3d-chart"));
this.option = this.getPie3D(this.echartsData, 0.59)
this.echartsInstance.setOption(this.option)
this.echartsInstance.on("mouseover",this.mouseover)
this.echartsInstance.on("globalout",this.globalout)
},
getPie3D(pieData, internalDiameterRatio) {
const series = [];
// 总和
let sumValue = 0;
let startValue = 0;
let endValue = 0;
const legendData = [];
const k =
typeof internalDiameterRatio !== "undefined"
? (1 - internalDiameterRatio) / (1 + internalDiameterRatio)
: 1 / 3;
// 为每一个饼图数据,生成一个 series-surface 配置
for (let i = 0; i < pieData.length; i += 1) {
sumValue += pieData[i].value;
const seriesItem = {
name:
typeof pieData[i].name === "undefined"
? `series${i}`
: pieData[i].name,
type: "surface",
parametric: true,
wireframe: {
show: false
},
pieData: pieData[i],
// originValue: pieData[i].value,
pieStatus: {
selected: false,
hovered: false,
k
}
};
if (typeof pieData[i].itemStyle !== "undefined") {
const { itemStyle } = pieData[i];
// eslint-disable-next-line no-unused-expressions
typeof pieData[i].itemStyle.color !== "undefined"
? (itemStyle.color = pieData[i].itemStyle.color)
: null;
// eslint-disable-next-line no-unused-expressions
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。
console.log(series);
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;
series[i].parametricEquation = this.getParametricEquation(
series[i].pieData.startRatio,
series[i].pieData.endRatio,
false,
false,
k,
// 我这里做了一个处理,使除了第一个之外的值都是10
series[i].pieData.value === series[0].pieData.value
? 35
: 10
);
startValue = endValue;
legendData.push(series[i].name);
}
// 准备待返回的配置项,把准备好的 legendData、series 传入。
const sum = pieData.reduce((a, b) => a + b.value, 0);
console.log(sum, "sum");
// let centerTitle = "总数";
let centerTitleNum = sum;
const option = {
title: [
{
show: this.centerTitle ? true : false,
text: [
"{value|" + centerTitleNum + "}",
"{name|" + this.centerTitle + "}"
].join("\n"),
textStyle: {
rich: {
value: {
color: "#222B45", // 字体颜色
fontSize: 20, // 字体大小
fontWeight: "bold", // 字体大小
lineHeight: 24
},
name: {
color: "#222B45", // 字体颜色
fontSize: 14, // 字体大小
lineHeight: 14
}
}
},
left: this.centerTitleX,
top: this.centerTitleY,
textAlign: "center"
}
],
// animation: false,
tooltip: {
formatter: params => {
const data = pieData[params.componentIndex];
return (
data.name +
":" +
data.value +
"辆" +
"<br> 占比:" +
((data.value / sum) * 100).toFixed(2) +
"%"
);
}
},
legend: {
icon: "rect",
show: true,
right: 50,
top: 26,
itemWidth: 8,
itemHeight: 8,
itemGap: 30,
orient: "vertical",
formatter: params => {
const val = pieData.filter(item => {
return item.name === params;
});
return `${params} ${val[0].value}`;
},
textStyle: {
color: '#000',
fontSize: 14,
lineHeight: 14,
padding: [0, 1, 0, 8],
}
},
xAxis3D: {
min: -1,
max: 1
},
yAxis3D: {
min: -1,
max: 1
},
zAxis3D: {
min: -1,
max: 1
},
grid3D: {
show: false,
boxHeight: 5,
top: "-10%",
left: "-20%",
center: ["30%", "50%"],
radius: ["60%", "90%"],
viewControl: {
// 3d效果可以放大、旋转等,请自己去查看官方配置
alpha: 35,
// beta: 30,
rotateSensitivity: 1,
zoomSensitivity: 0,
panSensitivity: 0,
autoRotate: false,
distance: 150
},
// 后处理特效可以为画面添加高光、景深、环境光遮蔽(SSAO)、调色等效果。可以让整个画面更富有质感。
postEffect: {
// 配置这项会出现锯齿,请自己去查看官方配置有办法解决
enable: false,
bloom: {
enable: true,
bloomIntensity: 0.1
},
SSAO: {
enable: true,
quality: "medium",
radius: 2
}
// temporalSuperSampling: {
// enable: true,
// },
}
},
series
};
return option;
},
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) {
// eslint-disable-next-line no-param-reassign
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)
// eslint-disable-next-line no-param-reassign
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(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(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(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;
}
// 当前图形的高度是Z根据h(每个value的值决定的)
return Math.sin(v) > 0 ? 1 * h * 0.1 : -1;
}
};
},
mouseover(params) {
// 准备重新渲染扇形所需的参数
let isSelected;
let isHovered;
let startRatio;
let endRatio;
let k;
let i;
const _this = this
// 如果触发 mouseover 的扇形当前已高亮,则不做操作
if (_this.hoveredIndex === params.seriesIndex) {
return;
// 否则进行高亮及必要的取消高亮操作
} else {
// 如果当前有高亮的扇形,取消其高亮状态(对 option 更新)
if (_this.hoveredIndex !== "") {
// 从 option.series 中读取重新渲染扇形所需的参数,将是否高亮设置为 false。
isSelected = _this.option.series[_this.hoveredIndex].pieStatus.selected;
isHovered = false;
startRatio = _this.option.series[_this.hoveredIndex].pieData.startRatio;
endRatio = _this.option.series[_this.hoveredIndex].pieData.endRatio;
k = _this.option.series[_this.hoveredIndex].pieStatus.k;
i =
_this.option.series[_this.hoveredIndex].pieData.value ===
_this.option.series[0].pieData.value
? 35
: 10;
// 对当前点击的扇形,执行取消高亮操作(对 option 更新)
_this.option.series[
_this.hoveredIndex
].parametricEquation = _this.getParametricEquation(
startRatio,
endRatio,
isSelected,
isHovered,
k,
i
);
_this.option.series[_this.hoveredIndex].pieStatus.hovered = isHovered;
// 将此前记录的上次选中的扇形对应的系列号 seriesIndex 清空
_this.hoveredIndex = "";
}
// 如果触发 mouseover 的扇形不是透明圆环,将其高亮(对 option 更新)
if (params.seriesName !== "mouseoutSeries") {
// 从 option.series 中读取重新渲染扇形所需的参数,将是否高亮设置为 true。
isSelected =
_this.option.series[params.seriesIndex].pieStatus.selected;
isHovered = true;
startRatio =
_this.option.series[params.seriesIndex].pieData.startRatio;
endRatio =
_this.option.series[params.seriesIndex].pieData.endRatio;
k = _this.option.series[params.seriesIndex].pieStatus.k;
// 对当前点击的扇形,执行高亮操作(对 option 更新)
_this.option.series[
params.seriesIndex
].parametricEquation = _this.getParametricEquation(
startRatio,
endRatio,
isSelected,
isHovered,
k,
50
);
_this.option.series[
params.seriesIndex
].pieStatus.hovered = isHovered;
// 记录上次高亮的扇形对应的系列号 seriesIndex
_this.hoveredIndex = params.seriesIndex;
}
// 使用更新后的 option,渲染图表
this.echartsInstance.setOption(_this.option);
}
},
globalout() {
if (this.hoveredIndex !== "") {
// 从 option.series 中读取重新渲染扇形所需的参数,将是否高亮设置为 true。
let isSelected = this.option.series[this.hoveredIndex].pieStatus.selected;
let isHovered = false;
let k = this.option.series[this.hoveredIndex].pieStatus.k;
let startRatio = this.option.series[this.hoveredIndex].pieData.startRatio;
let endRatio = this.option.series[this.hoveredIndex].pieData.endRatio;
// 对当前点击的扇形,执行取消高亮操作(对 this.option 更新)
let i =
this.option.series[this.hoveredIndex].pieData.value ===
this.option.series[0].pieData.value
? 35
: 10;
this.option.series[
this.hoveredIndex
].parametricEquation = this.getParametricEquation(
startRatio,
endRatio,
isSelected,
isHovered,
k,
i
);
this.option.series[this.hoveredIndex].pieStatus.hovered = isHovered;
// 将此前记录的上次选中的扇形对应的系列号 seriesIndex 清空
this.hoveredIndex = "";
}
// 使用更新后的 this.option,渲染图表
this.echartsInstance.setOption(this.option);
}
}
};
</script>