基于Vue的3D饼图

先看效果:在这里插入图片描述
再看代码:

<template>
  <div class="container">
    <div style="height: 100%;width: 100%;" id="bingtu3D"></div>
  </div>

</template>
<script>
import "echarts-liquidfill";
import 'echarts-gl';
import * as echarts from "echarts";

export default {
  mounted () {
    this.BingTu3D()
  },
  methods: {
    BingTu3D(){
      const myCharts = echarts.init(document.getElementById('bingtu3D'));
      function getParametricEquation(startRatio, endRatio, isSelected, isHovered, k,height) {
        // 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 = 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)
        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);
            }
            return Math.sin(v) > 0 ? 1*height : -1;
          }
        };
      }
      // 生成模拟 3D 饼图的配置项
      function getPie3D(pieData, internalDiameterRatio) {
        let series = [];
        let sumValue = 0;
        let startValue = 0;
        let endValue = 0;
        let legendData = [];
        let 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;

          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
            }
          };

          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;
          console.log(series[i]);
          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,series[i].pieData.value);

          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: 0.1,
            color: '#E1E8EC',
          },
          parametricEquation: {
            u: {
              min: 0,
              max: Math.PI * 2,
              step: Math.PI / 20,
            },
            v: {
              min: 0,
              max: Math.PI,
              step: Math.PI / 20,
            },
            x: function (u, v) {
              return ((Math.sin(v) * Math.sin(u) + Math.sin(u)) / Math.PI) * 2;
            },
            y: function (u, v) {
              return ((Math.sin(v) * Math.cos(u) + Math.cos(u)) / Math.PI) * 2;
            },
            z: function (u, v) {
              return Math.cos(v) > 0 ? -0.5 : -5;
            },
          },
        });
        // 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: 0.1,
            color: '#E1E8EC',
          },
          parametricEquation: {
            u: {
              min: 0,
              max: Math.PI * 2,
              step: Math.PI / 20,
            },
            v: {
              min: 0,
              max: Math.PI,
              step: Math.PI / 20,
            },
            x: function (u, v) {
              return ((Math.sin(v) * Math.sin(u) + Math.sin(u)) / Math.PI) * 2;
            },
            y: function (u, v) {
              return ((Math.sin(v) * Math.cos(u) + Math.cos(u)) / Math.PI) * 2;
            },
            z: function (u, v) {
              return Math.cos(v) > 0 ? -5 : -7;
            },
          },
        });
        series.push({
          name: 'mouseoutSeries',
          type: 'surface',
          parametric: true,
          wireframe: {
            show: false,
          },
          itemStyle: {
            opacity: 0.1,
            color: '#E1E8EC',
          },
          parametricEquation: {
            u: {
              min: 0,
              max: Math.PI * 2,
              step: Math.PI / 20,
            },
            v: {
              min: 0,
              max: Math.PI,
              step: Math.PI / 20,
            },
            x: function (u, v) {
              return ((Math.sin(v) * Math.sin(u) + Math.sin(u)) / Math.PI) * 2.2;
            },
            y: function (u, v) {
              return ((Math.sin(v) * Math.cos(u) + Math.cos(u)) / Math.PI) * 2.2;
            },
            z: function (u, v) {
              return Math.cos(v) > 0 ? -7 : -7;
            },
          },
        });
        return series;
      }
      // 传入数据生成 option
      const optionsData = [
        {
          name: 'name1',
          value: 95,
          itemStyle: {
            //   opacity: 0.5,
            color: '#dc3545',
          },
        },
        {
          name: 'name2',
          value: 5,
          itemStyle: {
            //   opacity: 0.5,
            color: '#efb72c',
          },
        },
        {
          name: 'name3',
          value: 60,
          itemStyle: {
            //   opacity: 0.5,
            color: '#00b2ff',
          },
        },
      ];
      const series = getPie3D(optionsData, 0.8, 240, 28, 26, 0.5);
      series.push({
        name: 'pie2d',
        type: 'pie',
        label: {
          show:true,
          opacity: 1,
          lineHeight: 20,
          textStyle: {
            fontSize: 16,
            color:'#fff'
          },
        },
        labelLine: {
          length: 30,
          length2: 60,
        },
        startAngle: -30, //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: ['20%', '50%'],
        center: ['50%', '50%'],
        data: optionsData,
        itemStyle: {
          opacity: 0,
        },
      });
      // 准备待返回的配置项,把准备好的 legendData、series 传入。
      const option = {
        legend: {
          tooltip: {
            show: true,
          },
          data: ['name1', 'name2', 'name3'],
          bottom: '1%',
          right:'10%',

          textStyle: {
            color: '#fff',
            fontSize: 16,
          },
        },
        animation: true,
        // tooltip: {
        //   formatter: params => {
        //     if (params.seriesName !== 'mouseoutSeries' && params.seriesName !== 'pie2d') {
        //       return `${params.seriesName}<br/><span style="display:inline-block;margin-right:5px;border-radius:5px;width:10px;height:10px;background-color:${params.color};"></span>${option.series[params.seriesIndex].pieData.value }`;
        //     }
        //   },
        //   textStyle : {
        //     fontSize : 16
        //   },
        // },
        title: {
          x: 'center',
          top: '20',
        },
        // backgroundColor: '#333',
        label: {
          show: true,
          position: 'outside',
          formatter: '{b} \n{c} {d}%',
        },
        xAxis3D: {
          min: -1,
          max: 1,
        },
        yAxis3D: {
          min: -1,
          max: 1,
        },
        zAxis3D: {
          min: -1,
          max: 1,
        },
        grid3D: {
          show: false,
          boxHeight: 0.5,
          bottom: '50%',
          viewControl:{
            distance:180,
            alpha:25,
            beta:60,
            autoRotate: false, // 自动旋转
          },
        },
        series: series,
      };
      // 绘制图表
      myCharts.setOption(option)
      //自适应大小
      window.onresize = () => {
        myCharts.resize()
      }
    },
  }
}
</script>
<style lang="less" scoped>
/*正文开始*/
.container{
  width:1920px;
  height:900px;
  background-color: #5b81ee;
}
body {
  width: 1920px;
  overflow: hidden;
  height: 1080px;
}
</style>

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转载自blog.csdn.net/qq_35241329/article/details/132431432