<template>
  <div>
    <div id="bing"></div>
  </div>
</template>

<script>
export default {
  name: "ProjectONE",

  data() {
    return {};
  },

  mounted() {
    this.getbing();
  },

  methods: {
    // 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
      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 = 1;
      // 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) * h * 0.1;
          }
          return Math.sin(v) > 0 ? 1 * h * 0.1 : -1;
        },
      };
    },

    getPie3D(
      pieData,
      internalDiameterRatio,
      distance,
      alpha,
      pieHeight,
      opacity = 1
    ) {
      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 += 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],
          pieStatus: {
            selected: false,
            hovered: false,
            k: k,
          },
        };
        if (typeof pieData[i].itemStyle !== "undefined") {
          const itemStyle = {};
          if (typeof pieData[i].itemStyle.color !== "undefined") {
            itemStyle.color = pieData[i].itemStyle.color;
          }
          if (typeof pieData[i].itemStyle.opacity !== "undefined") {
            itemStyle.opacity = pieData[i].itemStyle.opacity;
          }
          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;
        console.log(
          series[i].pieData.startRatio,
          series[i].pieData.endRatio,
          false,
          false,
          k,
          series[i].pieData.value
        );
        series[i].parametricEquation = this.getParametricEquation(
          series[i].pieData.startRatio,
          series[i].pieData.endRatio,
          false,
          false,
          k,
          series[i].pieData.value
        );
        startValue = endValue;
        legendData.push(series[i].name);
      }
      return series;
    },
    getbing() {
      const optionsData = [
        {
          name: "生料系统",
          value: 11,
          itemStyle: {
            color: "#0BA0E3",
            // opacity: 1,
          },
        },
        {
          name: "水泥磨系统",
          value: 33,
          itemStyle: {
            color: "#01E3F4",
            // opacity: 1,
          },
        },
        {
          name: "破碎系统",
          value: 22,
          itemStyle: {
            color: "#50F4C1",
            // opacity: 1,
          },
        },
      ];

      const series = this.getPie3D(optionsData, 0.8, 240, 28, 26, 0.5);

      series.push({
        name: "pie2d",
        type: "pie",
        label: {
          opacity: 1,
          fontSize: 13,
          lineHeight: 20,
        },
        labelLine: {
          length: 30,
          length2: 30,
        },
        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,
        },
      });

      let option = {
        // legend: {
        //   tooltip: {
        //     show: true,
        //   },
        //   data: ["生料系统", "水泥磨系统", "破碎系统"],
        //   bottom: "10%",
        //   textStyle: {
        //     color: "#fff",
        //     fontSize: 12,
        //   },
        // },
        // tooltip: {
        //   formatter: (params) => {
        //     console.log(params);
        //     console.log(params.seriesName);
        //     if (
        //       params.seriesName !== "mouseoutSeries" &&
        //       params.seriesName !== "pie2d"
        //     ) {
        //       let bfb = (
        //         (option.series[params.seriesIndex].pieData.endRatio -
        //           option.series[params.seriesIndex].pieData.startRatio) *
        //         100
        //       ).toFixed(2);
        //       return (
        //         `${params.seriesName}<br/>` +
        //         `<span style="display:inline-block;margin-right:5px;border-radius:10px;width:10px;height:10px;background-color:${params.color};"></span>` +
        //         `${bfb}%`
        //       );
        //     }
        //   },
        // },
        // title: {
        //   text: "3D 饼图",
        //   x: "center",
        //   top: "20",
        //   textStyle: {
        //     color: "#fff",
        //     fontSize: 22,
        //   },
        // },
        labelLine: {
          show: true,
          lineStyle: {
            color: "#7BC0CB",
          },
        },
        label: {
          show: true,
          position: "outside",
          formatter: (params) => {
            const total = optionsData.reduce((a,b) => {
              console.log();
              return a+b;
            });
            console.log(total);
            const percent = (params.value / total) * 100;
            console.log(params);
            return `{name|${params.name}}` + "\n" + `{colors|${percent}}`;
          },
          rich: {
            name: {
              fontSize: 24,
              color: "#fff",
            },
            colors: {
              fontSize: 30,
              color: function (params) {
                console.log(params);
                return params.data.color;
              },
              fontWeight: 700,
            },
          },
        },
        xAxis3D: {
          min: -1,
          max: 1,
        },
        yAxis3D: {
          min: -1,
          max: 1,
        },
        zAxis3D: {
          min: -1,
          max: 1,
        },
        grid3D: {
          show: false,
          boxHeight: 30, // 三维笛卡尔坐标系在三维场景中的高度
          viewControl: {
            alpha: 40,
            beta: 40,
            distance: 500, //调整视角到主体的距离，类似调整zoom
            rotateSensitivity: 0, // 设置为0无法旋转
            zoomSensitivity: 0, // 设置为0无法缩放
            panSensitivity: 0, // 设置为0无法平移
            autoRotate: false, // 自动旋转
          },
        },
        series: series,
      };
      this.defineEcharts("bing", option);
    },
    defineEcharts(dom, option) {
      var chartDom = document.getElementById(dom);
      var myChart = this.$echarts.init(chartDom, null, {
        devicePixelRatio: 10, // 设置为2或更高的值
      });
      myChart.setOption(option);
    },
  },
};
</script>

<style lang="less" scoped>
#bing {
  width: 500px;
  height: 500px;
}
</style>
