组件代码：
<template>
<!-- 饼图 -->
<div :id="histogramId" v-bind:style="{height:height,width:width}"></div>
</template>
<script src="https://unpkg.com/echarts-gl@2/dist/echarts-gl.min.js"></script>
<script type="text/ecmascript-6">
export default {
props:{
//id
histogramId:{
type:String,
default:''
},
//组件的高度
height: {
type: String,
default: '160px'
},
//组件的宽度
width: {
type: String,
default: '500px'
},
//legend 样式
legend:{
type:Object,
default:()=>{
return{
legendIcon:'rect', //circle，rect ，roundRect，triangle，diamond，pin，arrow，none
legendWidth:10,
legendHeight:10,
legendGrap:20,
bottom:'0%',
top:'5%',
right:'0%',
color:'#ffffff',
fontSize:12,
legendShow:false
}
}
},
graphic:{
type:Array,
default:()=>[
{threeDiImg:'http://218.56.180.213:8029/static/file/pic/202305/picFgwCEgfJ1684914835410.png',imgWidth:220, imgHeight:98,threeDiLeft:'20%',threeDiTop:'35%'},
{threeDiImg:'http://218.56.180.213:8029/static/file/pic/202305/picu4HDaEi21684914867656.png',imgWidth:185, imgHeight:77,threeDiLeft:'24%',threeDiTop:'31%'}
]
},
grid3D:{
type:Object,
default:()=>{
return{
threeTop:'-15%',
threeLeft:'-7%',
threeDistance:170,
radius:0.59, //之前默认0.59
alpha:30,
autoRotateSpeed:30,
height:40
}
}
},
imgGridData: {
type: Array,
default: () => [
{name: '开放式', value: 10}, {name: '封闭式', value: 20}, {name: '混合式', value: 30},{name: '其他', value: 30}
]
},
colors:{
type:Array,
default:()=>["#1D9FFF", "#FFDE14", "#7376FA", "#F74D4F", "#04AF52"]
},
},
data() {
return {
threeHIgh: "",
imgPieData: [],
};
},
methods: {
initPie() {
var that = this;
that.threeHIgh = that.$echarts.init(document.getElementById(that.histogramId));
var option;
let selectedIndex = "";
let hoveredIndex = "";
var colors = that.colors;
var dataOld = that.imgGridData;
var data = [],
color = "";
for (var i = 0; i < dataOld.length; i++) {
if (i % 5 == 0) {
color = colors[i];
} else if (i % 5 == 1) {
color = colors[i];
} else if (i % 5 == 2) {
color =colors[i];
} else if (i % 5 == 3) {
color = colors[i];
} else if (i % 5 == 4) {
color = colors[i];
}
let item = {
name: dataOld[i].name,
value: dataOld[i].value,
itemStyle: {
color: color,
},
};
data.push(item);
}
option = getPie3D(
data,
that.grid3D.radius //这个是只饼图倾斜的角度
);
// 生成扇形的曲面参数方程
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) {
// 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;
},
};
}
// 生成模拟 3D 饼图的配置项
function 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,
num: typeof pieData[i].value === "undefined" ? `series${i}` : pieData[i].value,
type: "surface",
parametric: true,
wireframe: {
show: false,
},
pieData: pieData[i],
pieStatus: {
selected: false,
hovered: false,
k,
},
};
if (typeof pieData[i].itemStyle !== "undefined") {
const { itemStyle } = pieData[i];
// eslint-disable-next-line no-unused-expressions
typeof pieData[i].itemStyle.color !== "undefined" ? (itemStyle.color = pieData[i].itemStyle.color) : null;
// eslint-disable-next-line no-unused-expressions
typeof pieData[i].itemStyle.opacity !== "undefined" ? (itemStyle.opacity = pieData[i].itemStyle.opacity) : null;
seriesItem.itemStyle = itemStyle;
}
series.push(seriesItem);
}
// 使用上一次遍历时，计算出的数据和 sumValue，调用 getParametricEquation 函数，
// 向每个 series-surface 传入不同的参数方程 series-surface.parametricEquation，也就是实现每一个扇形。
for (let i = 0; i < series.length; i += 1) {
endValue = startValue + series[i].pieData.value;
series[i].pieData.startRatio = startValue / sumValue;
series[i].pieData.endRatio = endValue / sumValue;
series[i].parametricEquation = getParametricEquation(
series[i].pieData.startRatio,
series[i].pieData.endRatio,
false,
false,
k,
that.grid3D.height
// 我这里做了一个处理，使除了第一个之外的值都是10
// series[i].pieData.value === series[0].pieData.value ? 35 : 10
// (series[i].pieData.value = 35)
);
startValue = endValue;
legendData.push(series[i].name);
}
//graphic的个数，图片的个数
var graphicArr = []
for(var i = 0;i<that.graphic.length;i++){
let item = {
type: "image",
z: 0,
style: {
// image: require("../../../static/images/echarts/circle_bg.png"),
image: that.graphic[i].threeDiImg,
width: that.graphic[i].imgWidth,
height: that.graphic[i].imgHeight,
},
left: that.graphic[i].threeDiLeft,
top: that.graphic[i].threeDiTop,
position: [100, 100],
}
graphicArr.push(item)
}
// 准备待返回的配置项，把准备好的 legendData、series 传入。
const option = {
// animation: false,
tooltip: {
formatter: (params) => {
if (params.seriesName !== "mouseoutSeries") {
return `${params.seriesName}<br/><span style="z-index:10;display:inline-block;margin-right:5px;border-radius:10px;width:10px;height:10px;background-color:${params.color};"></span>${
option.series[params.seriesIndex].pieData.value
}`;
}
return "";
},
},
legend: {
icon: that.legend.legendIcon,
show: that.legend.legendShow,
data: legendData,
top: 10,
width: 50,
itemWidth: that.legend.legendWidth,
itemHeight: that.legend.legendHeight,
itemGap: that.legend.legendGrap,
right: that.legend.right,
top:that.legend.top,
textStyle: {
align: "right",
// verticalAlign: 'middle',
rich: {
name: {
verticalAlign: "right",
color: "#A7CBF4",
fontSize: 12,
align: "left",
},
value: {
color: "rgba(255,255,255,0.9)",
fontSize: 12,
align: "left",
},
rate: {
color: "rgba(255,255,255,0.9)",
fontSize: 12,
align: "right",
},
},
},
formatter: (name) => {
if (dataOld.length) {
const item = dataOld.filter((item) => item.name === name)[0];
return `{name|${name} }{value|${item.value}}`;
// return `{name|${name} }{value| ${item.value}} `;
}
},
},
graphic: {
// elements: [
// {
// type: "image",
// z: 0,
// style: {
// // image: require("../../../static/images/echarts/circle_bg.png"),
// image: that.graphic.threeDiImg,
// width: that.graphic.imgWidth,
// height: that.graphic.imgHeight,
// },
// left: that.graphic.threeDiLeft,
// top: that.graphic.threeDiTop,
// position: [100, 100],
// },
// ],
elements:graphicArr
},
xAxis3D: {
min: -1,
max: 1,
},
yAxis3D: {
min: -1,
max: 1,
},
zAxis3D: {
min: -1,
max: 1,
},
grid3D: {
show: false,
boxHeight: 5,
top: that.grid3D.threeTop,
left: that.grid3D.threeLeft,
zlevel: 10,
viewControl: {
// 3d效果可以放大、旋转等，请自己去查看官方配置
alpha: that.grid3D.alpha,
rotateSensitivity: 1,
zoomSensitivity: 0,
panSensitivity: 0,
autoRotate: true,
autoRotateSpeed: that.grid3D.autoRotateSpeed, //这是旋转的速度
distance: that.grid3D.threeDistance,
},
// 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,
};
that.threeHIgh.setOption(option);
return option;
}
// 修正取消高亮失败的 bug
// 监听 mouseover，近似实现高亮（放大）效果
that.threeHIgh.on("mouseover", function (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;
// 如果触发 mouseover 的扇形当前已高亮，则不做操作
if (hoveredIndex === params.seriesIndex || params.seriesIndex === undefined) {
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 (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 = option.series[hoveredIndex].pieStatus.selected;
isHovered = false;
startRatio = option.series[hoveredIndex].pieData.startRatio;
endRatio = option.series[hoveredIndex].pieData.endRatio;
k = option.series[hoveredIndex].pieStatus.k;
i = option.series[hoveredIndex].pieData.value === 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）
option.series[hoveredIndex].parametricEquation = getParametricEquation(startRatio, endRatio, isSelected, isHovered, k, 40);
option.series[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
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 = option.series[params.seriesIndex].pieStatus.selected;
isHovered = true;
startRatio = option.series[params.seriesIndex].pieData.startRatio;
endRatio = option.series[params.seriesIndex].pieData.endRatio;
k = option.series[params.seriesIndex].pieStatus.k;
// 对当前点击的扇形，执行高亮操作（对 option 更新）
// option.series[params.seriesIndex].pieData.value + 5
option.series[params.seriesIndex].parametricEquation = getParametricEquation(startRatio, endRatio, isSelected, isHovered, k, 60);
option.series[params.seriesIndex].pieStatus.hovered = isHovered;
// 记录上次高亮的扇形对应的系列号 seriesIndex
hoveredIndex = params.seriesIndex;
}
// 使用更新后的 option，渲染图表
that.threeHIgh.setOption(option);
}
});
// 修正取消高亮失败的 bug
that.threeHIgh.on("globalout", function () {
if (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 = option.series[hoveredIndex].pieStatus.selected;
let isHovered = false;
let k = option.series[hoveredIndex].pieStatus.k;
let startRatio = option.series[hoveredIndex].pieData.startRatio;
let endRatio = option.series[hoveredIndex].pieData.endRatio;
// 对当前点击的扇形，执行取消高亮操作（对 option 更新）
i = option.series[hoveredIndex].pieData.value === option.series[0].pieData.value ? 35 : 10;
option.series[hoveredIndex].parametricEquation = getParametricEquation(startRatio, endRatio, isSelected, isHovered, k, 40);
option.series[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
hoveredIndex = "";
}
// 使用更新后的 option，渲染图表
that.threeHIgh.setOption(option);
});
// //点击
// that.threeHIgh.on('click', function (params) {
// //向父级传递index
// that.$emit('pieAll', params.dataIndex)
// });
},
},
watch: {
// pieData: {
// handler(newVal, oldVal) {
// this.initPie();
// },
// deep: true,
// },
width: function () {
this.threeHIgh.resize();
},
imgGridData: {
handler(newVal, oldVal) {
this.imgPieData = newVal;
this.$nextTick(function () {
this.initPie();
});
},
deep: true,
},
},
mounted() {
// this.initSingleColorZhu()
// 新建一个promise对象
let newPromise = new Promise((resolve) => {
resolve();
});
var that = this;
//然后异步执行echarts的初始化函数
newPromise.then(() => {
// 此dom为echarts图标展示dom
that.$nextTick(function () {
that.initPie();
});
});
},
};
</script>