Echarts3D饼图的配置

3d饼图，已封装完成，能满足大部分情况，但极值仍可能会出现问题

下载依赖
 

echarts引用3d图形首先需要引入echarts其次在引入echarts-gl 
import * as echarts from "echarts";
import "echarts-gl";

效果如下

数据格式如下

pieData: [
        {
          name: "特级",
          value: 10,
          unit: "万户",
          
          itemStyle: { color: "#DD3BF3" },
        },
        {
          name: "一级",
          value: 20,
          unit: "万户",
         
          itemStyle: { color: "#31E49F" },
        },
        {
          name: "二级",
          value: 30,
          unit: "万户",
         
          itemStyle: { color: "#7C4CF5" },
        },
        {
          name: "临时",
          value: 40,
          unit: "万户",
          
          itemStyle: { color: "#1E47F1" },
        },
      ],

使用如下

 queryUserModuleInfo(params).then((res) => {
        if (res.status === 200 && res.data.code === 200) {
          const resData = res.data.data;
          const pieData = deepClone(this.pieData);
          
          const value = resData.slice(4, 5);
          const pieDataArr = resData.slice(0, 4);
          // 用户数-赋值
         
          pieDataArr.forEach((item, index) => {
          
            // 饼图数据赋值
            if (item.name === pieData[index].name) {
                this.$set(pieData[index], "value", Number(item.number || 0));
            }
          });
          // 将pieData进行排序，根据value排序
          pieData.sort((a, b) => b.value - a.value);
          this.$refs.pie.setPie(pieData, this.chartId, this.chartName, this.chartsClick);
        }

封装完成的3d饼图

<template>
  <div class="main">
    <div class="pie-charts" :id="chartId" />
  </div>
</template>
<script>

import { formatNumber } from "@/utils/util.js";//处理数据的，与整体无关
export default {
  props: {
    mapTitle: [String, Array],
   
    // 视角到主体的距离
    distance: {
      type: Number,
      default: 260,
    },
    // 旋转角度
    alpha: {
      type: Number,
      default: 16,
    },
    beta: {
      type: Number,
      default: 60,
    },
    pieDataFlag: {
      type: Boolean,
      default: false,
    },
    optionData: {
      type: Array,
      default: () => [],
    },
    chartId: {
      type: [String, Number],
      default: () => new Date().getTime(),
    },
    unit: {
      type: String,
      default: () => "",
    },
    chart: {
      type: String,
      default: () => null,
    },
    eventName: {
      type: Function,
      default: null,
    },
  },
  data() {
    return {
      localChartId: this.chartId,
      localEventName: this.eventName,
      isUpdating: false, // 新增标志位
    };
  },
  mounted() {
    remoteEvent.on("mapClick", () => {
      this.setPie(this.optionData, this.chartId, this.chart, this.eventName);
    });
    this.setPie(this.optionData, this.chartId, this.chart, this.eventName);
  },
  methods: {
    setPie(pieData, id, myChart, eventName) {
      if (myChart) myChart.dispose();
      var option = this.getPie3D(pieData);
      //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
      option.series.push({
        backgroundColor: "transparent",
        name: "pie2d",
        type: "pie",
        label: { opacity: 1, overflow: "none" },
        itemStyle: { opacity: 0.02 },
        labelLine: { length: 20, length2: 10 },
        startAngle: -60, // 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: ["30%", "55%"],
        center: ["50%", "50%"],
        data: pieData, // 与之前的series数据一致
        tooltip: {
          show: false,
        },
      });

      myChart = this.$echarts.init(document.getElementById(id));
      myChart.setOption(option);
      myChart.off("click"); // 防止重复绑定点击事件
      // 添加点击事件
      myChart.on("click", (params) => eventName(params, this.mapTitle));
      window.addEventListener("resize", () => myChart.resize());
    },
    getPie3D(pieData) {
      // internalDiameterRatio:透明的空心占比
      let series = [];
      let sumValue = 0;
      let startValue = 0;
      let endValue = 0;
      let k = 1;
      pieData.sort((a, b) => {
        return b.value - a.value;
      });
      // 为每一个饼图数据，生成一个 series-surface 配置
      for (let i = 0; i < pieData.length; i++) {
        sumValue += pieData[i].value;
        let seriesItem = {
          name: typeof pieData[i].name === "undefined" ? `series${i}` : pieData[i].name,
          type: "surface",
          parametric: true,
          wireframe: {
            show: false,
          },
          pieData: pieData[i],
          pieStatus: {
            selected: false,
            hovered: false,
            k: k,
          },
          radius: "50%",
          center: ["10%", "10%"],
        };

        if (typeof pieData[i].itemStyle != "undefined") {
          let 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;
        }
        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++) {
        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,
          series[i].pieData.value
        );
        startValue = endValue;
      }
      let boxHeight = this.getHeight3D(series, 30); //通过传参设定3d饼/环的高度，26代表26px
      // 准备待返回的配置项，把准备好的 legendData、series 传入。
      let option = {
        // 引导线配置
        labelLine: {
          show: true,
          lineStyle: {
            color: "#fff",
            normal: {},
          },
        },
        label: {
          show: true,
          position: "outside",
          formatter: function (params) {
            return `{d|${params.percent?.toFixed(2)}}{c|${"%"}}\n\n{b|${params.name}}`;
          },
          rich: {
            d: {
              fontSize: 22,
              lineHeight: 18,
              fontFamily: "Source Han Sans",
              fontWeight: "bold",
              color: "#A7E0FF",
            },
            b: {
              fontSize: 18,
              color: "#fff",
            },
            c: {
              fontSize: 16,
              lineHeight: 18,
              color: "#fff",
            },
          },
        },
        // 提示框
        tooltip: {
          position: "right", // 将提示框显示在鼠标右侧
          textStyle: { color: "#fff", fontSize: 14 },
          borderWidth: 1,
          borderColor: "#1495F4",
          backgroundColor: "rgba(20, 149, 244, 0.5)", // 提示框背景颜色
          boxShadow: "0 0 3px rgba(0, 0, 0, 0.3)", // 提示框阴影
          extraCssText: "box-shadow: inset 0px 0px 10px 0px rgba(1, 30, 18, 0.302);",
          // 格式化提示框，添加单位
          formatter: (params) => {
            if (params.seriesName !== "mouseoutSeries" && params.seriesName !== "pie2d") {
              let bfb = 0;
              if (this.pieDataFlag) {
                let findItem = pieData.find((item) => item.name === params.seriesName);
                bfb =  findItem.value;
              }
              const unit = ["万个", "万户"];
              const format = unit.includes(this.unit) ? 2 : 0;
              return (
                "<div style='color: #fff''>" +
                `${params.seriesName}<br/>` +
                `<span style="display:inline-block;margin-right:5px;border-radius:10px;width:10px;height:10px;background-color:${params.color};"></span>` +
                `${formatNumber(bfb, format)}${this.unit}` +
                "</div>"
              );
            }
          },
        },
        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
          left: 0,
          top: 0, //3d饼图的位置
          viewControl: {
            //3d效果可以放大、旋转等，请自己去查看官方配置
            alpha: this.alpha, //角度
            // 饼块开始得角度
            beta: this.beta || 60,
            distance: this.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: true //自动旋转
          },
        },
        series: series,
      };
      return option;
    },
    //获取3d丙图的最高扇区的高度
    getHeight3D(series, height) {
      series.sort((a, b) => {
        return b.pieData.value - a.pieData.value;
      });
      return (height * 25) / series[0].pieData.value;
    },
    // 生成扇形的曲面参数方程，用于 series-surface.parametricEquation
    getParametricEquation(startRatio, endRatio, isSelected, isHovered, k, h) {
      // 计算
      let midRatio = (startRatio + endRatio) / 2;
      let startRadian = startRatio * Math.PI * 2;
      let endRadian = endRatio * Math.PI * 2;
      let 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 = true;
      }
      // 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）
      let offsetX = isSelected ? Math.cos(midRadian) * 0.1 : 0;
      let 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）
      let 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;
        },
      };
    },
  },
};
</script>
<style lang="scss" scoped>
.main {
  width: 100%;
  height: 100%;
  .pie-charts {
    width: 100%;
    height: 100%;
  }
}
</style>