echarts3D设置饼状图旋转会出现穿透的问题?

正面看没问题,但是转到背面,蓝色没有把红色挡住,出现穿透的情况,这个怎么解决
image.png
image.png

createLivestockChart() {
      const optionsData = [
        {name: '待办', value: 4256, itemStyle: {color: 'rgba(15, 213, 247, 0.935)'}},
        {name: '已办', value: 2356, itemStyle: {color: 'rgb(65,70,212)'}},
        {name: '未处理', value: 2018, itemStyle: {color: 'rgb(4, 245, 92)'}},
        {name: '忽略', value: 1998, itemStyle: {color: 'rgba(245, 64, 4, 0.958)'}}
      ]

      // 关键修改:缩小半径参数,保持高度不变
      const radiusSize = 25; // 半径从30减小到20
      const heightSize = 50; // 高度保持不变
      const series = getPie3D(optionsData, 0, radiusSize, 0, 0, heightSize)

      this.livestockOption = {
        legend: {
          show: true,
          tooltip: {show: true},
          orient: 'vertical',
          data: ['待办', '已办', '未处理', '忽略'],
          top: 'center',
          itemGap: 10,
          itemHeight: 6,
          itemWidth: 14,
          right: '2%',
          textStyle: {
            color: '#fff',
            fontSize: 8,
          },
        },
        animation: true,
        tooltip: {
          formatter: (params) => {
            if (params.seriesName !== 'mouseoutSeries') {
              return `${params.name}<br/>
                  <span style="display:inline-block;
                  margin-right:5px;
                  border-radius:10px;
                  width:10px;
                  height:10px;
                  background-color:${params.color};"></span>
                  ${params.value}人`
            }
          },
          textStyle: {fontSize: 12}
        },
        title: {
          x: 'center',
          top: '10',
          textStyle: {color: '#fff', fontSize: 12}
        },
        labelLine: {show: false},
        label: {show: false},
        xAxis3D: {min: -1, max: 1},
        yAxis3D: {min: -1, max: 1},
        zAxis3D: {min: -1, max: 1},
        grid3D: {
          show: false,
          boxHeight: 0.01,
          bottom: '55%',
          viewControl: {
            distance: 80, // 进一步减小观察距离
            alpha: 35,
            beta: 55,
            autoRotate: true,
          },
        },
        series: [
          ...series,
          {
            // 添加深度排序层(按比例缩小)
            type: 'surface',
            wireframe: {show: false},
            shading: 'color',
            silent: true,
            itemStyle: {color: 'transparent'},
            parametric: true,
            parametricEquation: {
              u: {min: -Math.PI, max: Math.PI},
              v: {min: -Math.PI, max: Math.PI},
              x: function (u, v) {
                return Math.sin(u) * Math.cos(v) * 0.3; // 缩小到30%
              },
              y: function (u, v) {
                return Math.sin(u) * Math.sin(v) * 0.3; // 缩小到30%
              },
              z: function (u, v) {
                return Math.cos(u) * 0.3; // 缩小到30%
              }
            }
          }
        ]
      }
    }
export function getPie3D(pieData, internalDiameterRatio, size, startAngle, endAngle, height) {
    let series = []
    let sumValue = 0
    let startValue = 0
    let endValue = 0
    let legendData = []
    let k =
        typeof internalDiameterRatio !== 'undefined'
            ? (1 - internalDiameterRatio) / (1 + internalDiameterRatio)
            : 1 / 3

    // 添加缩放比例计算
    const scale = size / 100; // 根据size参数计算缩放比例

    // 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, // 使用固定的高度值
            scale   // 添加缩放比例参数
        )

        startValue = endValue

        legendData.push(series[i].name)
    }
    return series
}

// 修改函数签名,添加scale参数
export function getParametricEquation(startRatio, endRatio, isSelected, isHovered, k, height, scale = 1) {
    // 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) {
            let result;
            if (u < startRadian) {
                result = (
                    offsetX +
                    Math.cos(startRadian) * (1 + Math.cos(v) * k) * hoverRate
                )
            } else if (u > endRadian) {
                result = (
                    offsetX + Math.cos(endRadian) * (1 + Math.cos(v) * k) * hoverRate
                )
            } else {
                result = (
                    offsetX + Math.cos(u) * (1 + Math.cos(v) * k) * hoverRate
                )
            }
            return result * scale; // 应用缩放比例
        },

        y: function (u, v) {
            let result;
            if (u < startRadian) {
                result = (
                    offsetY +
                    Math.sin(startRadian) * (1 + Math.cos(v) * k) * hoverRate
                )
            } else if (u > endRadian) {
                result = (
                    offsetY + Math.sin(endRadian) * (1 + Math.cos(v) * k) * hoverRate
                )
            } else {
                result = (
                    offsetY + Math.sin(u) * (1 + Math.cos(v) * k) * hoverRate
                )
            }
            return result * scale; // 应用缩放比例
        },

        z: function (u, v) {
            // 高度不应用缩放比例
            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
        },
    }
}
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2 个回答

itemStyle: {color: 'rgba(15, 213, 247, 0.935)'}}, itemStyle颜色的有不透明度,设置为1就好了