ggfwjsc/src/view/echarts/pie3d.vue

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<template>
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<div ref="chart" style="width:100%;height:calc(100% - 200px);"></div>
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</template>
<script setup>
import { onMounted, reactive, ref } from "vue";
// 局部引入echarts核心模块
import * as echarts from 'echarts'
import 'echarts-gl';
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const chart = ref(); // 创建DOM引用
const colorList = ['#FFE35F','#0081FF','#8ABEDB','#25B9C8','#30EB92','rgba(69, 244, 245)', 'rgba(7, 166, 255)', 'rgba(255, 208, 118)', 'rgba(109, 148, 198)', 'rgba(255, 255, 255)']
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const pieData = [
{
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name: "60-70岁", //名称
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value: 101243, //值
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},
{
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name: "70-80岁",
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value: 84253,
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},
{
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name: "80-90岁",
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value: 14325,
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},
{
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name: "90-100岁",
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value: 4325,
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},
{
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name: "100岁以上",
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value: 563,
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}
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]
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const serData = pieData.map((dItem, index) => {
return {
...dItem,
value: Number(dItem.value),
itemStyle: {
color: colorList[index]
},
}
})
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//设置图表配置项
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const option = getPie3D(serData, 0.8)
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// 生成模拟 3D 饼图的配置项
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function getPie3D(pieData, internalDiameterRatio) {
let series = [];
let sumValue = 0;
let startValue = 0;
let endValue = 0;
let legendData = [];
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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
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for (let i = 0; i < pieData.length; i++) {
sumValue += pieData[i].value;
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let seriesItem = {
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name: typeof pieData[i].name === 'undefined' ? `series${i}` : pieData[i].name,
type: 'surface',
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parametric: true,
wireframe: {
show: false,
},
pieData: pieData[i],
pieStatus: {
selected: false,
hovered: false,
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k: 1 / 10,
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},
};
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if (typeof pieData[i].itemStyle != 'undefined') {
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let itemStyle = {};
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typeof pieData[i].itemStyle.color != 'undefined' ? (itemStyle.color = pieData[i].itemStyle.color) : null;
typeof pieData[i].itemStyle.opacity != 'undefined'
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? (itemStyle.opacity = pieData[i].itemStyle.opacity)
: null;
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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++) {
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endValue = startValue + series[i].pieData.value;
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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
);
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startValue = endValue;
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legendData.push(series[i].name);
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}
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// // 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,
// },
// width: '30px',
// itemStyle: {
// opacity: 0.7,
// color: '#fff',
// },
// 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);
// },
// y: function (u, v) {
// return ((Math.sin(v) * Math.cos(u) + Math.cos(u)) / Math.PI) ;
// },
// z: function (u, v) {
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// return Math.cos(v) > 0 ? -6 : -7;
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// },
// },
// });
// 准备待返回的配置项,把准备好的 legendData、series 传入。
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let option = {
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//animation: false,
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//图例组件
legend: {
data: legendData,
color: [
"#8FD7FC",
"#466BE7",
"#F4BB29",
"#49C384",
"#8FD7FC",
"#466BE7",
"#F4BB29",
"#49C384",
],
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width: '40%',
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//图例列表的布局朝向。
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orient: "vertical",
right: 20,
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// bottom: 20,
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top: 'center',
// left: '10px',
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//图例文字每项之间的间隔
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itemGap: 10,
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show: true,
icon: "rect",
itemHeight: 10,
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itemWidth: 25,
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textStyle: {
//图例字体大小
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fontSize: 14,
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color: "#B8DDFF",
lineHeight: 20,
},
//格式化图例文本
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formatter: function (name) {
var target;
for (var i = 0, l = pieData.length; i < l; i++) {
if (pieData[i].name == name) {
target = pieData[i].value;
}
}
if(name == '90-100岁'){
return ` ${name} ${target}`;
}else if(name == '100岁以上'){
return ` ${name} ${target}`;
}else{
return ` ${name} ${target}`;
}
},
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},
//移动上去提示的文本内容
tooltip: {
backgroundColor: "rgba(18, 55, 85, 0.8);",
borderColor: "transparent",
formatter: (params) => {
if (
params.seriesName !== "mouseoutSeries" &&
params.seriesName !== "pie2d"
) {
let bfb = (
(option.series[params.seriesIndex].pieData.endRatio -
option.series[params.seriesIndex].pieData.startRatio) *
100
).toFixed(2);
const value = option.series[params.seriesIndex].pieData.value;
return (
`<div style='color:rgba(214, 243, 255, 0.9);'>` +
`<span style="display:inline-block;margin-right:5px;border-radius:10px;width:10px;height:10px;background-color:${params.color};"></span>` +
`${params.seriesName}<br/>` +
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`<span style='margin-right:20px'>${value}人</span>` +
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`<span >${bfb}%</span>` +
`</div>`
);
}
},
},
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xAxis3D: {},
yAxis3D: {},
zAxis3D: {},
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grid3D: {
viewControl: {
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autoRotate: true,
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rotateSensitivity: 0, //设置为0无法旋转
zoomSensitivity: 0, //设置为0无法缩放
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panSensitivity: 0, //设置为0无法平移
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alpha: 25, //角度(这个很重要 调节角度的)
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distance: 100, //调整视角到主体的距离类似调整zoom(这是整体大小)
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},
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top: '-30',
left: '-120',
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width: '100%',
show: false,
boxHeight: 20,
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},
series: series,
};
return option;
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}
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// 生成扇形的曲面参数方程,用于 series-surface.parametricEquation
function 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 = 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) * h * 0.1;
}
return Math.sin(v) > 0 ? 1 * h * 0.1 : -1;
},
};
};
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// 监听鼠标事件,实现饼图选中效果(单选),近似实现高亮(放大)效果。
function bindListen(myChart) {
let selectedIndex = "";
let hoveredIndex = "";
// 监听点击事件,实现选中效果(单选)
myChart.on("click", function (params) {
// 从 option.series 中读取重新渲染扇形所需的参数,将是否选中取反。
let isSelected =
!option.series[params.seriesIndex].pieStatus.selected;
let isHovered =
option.series[params.seriesIndex].pieStatus.hovered;
let k = option.series[params.seriesIndex].pieStatus.k;
let startRatio =
option.series[params.seriesIndex].pieData.startRatio;
let endRatio = option.series[params.seriesIndex].pieData.endRatio;
// 如果之前选中过其他扇形,将其取消选中(对 option 更新)
if (selectedIndex !== "" && selectedIndex !== params.seriesIndex) {
option.series[selectedIndex].parametricEquation =
getParametricEquation(
option.series[selectedIndex].pieData.startRatio,
option.series[selectedIndex].pieData.endRatio,
false,
false,
k,
option.series[selectedIndex].pieData.value
);
option.series[selectedIndex].pieStatus.selected = false;
}
// 对当前点击的扇形,执行选中/取消选中操作(对 option 更新)
option.series[params.seriesIndex].parametricEquation =
getParametricEquation(
startRatio,
endRatio,
isSelected,
isHovered,
k,
option.series[params.seriesIndex].pieData.value
);
option.series[params.seriesIndex].pieStatus.selected = isSelected;
// 如果本次是选中操作,记录上次选中的扇形对应的系列号 seriesIndex
isSelected ? (selectedIndex = params.seriesIndex) : null;
// 使用更新后的 option渲染图表
myChart.setOption(option);
});
// 监听 mouseover近似实现高亮放大效果
myChart.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;
// 如果触发 mouseover 的扇形当前已高亮,则不做操作
if (hoveredIndex === params.seriesIndex) {
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;
// 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,
option.series[hoveredIndex].pieData.value
);
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" &&
params.seriesName !== "pie2d"
) {
// 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].parametricEquation =
getParametricEquation(
startRatio,
endRatio,
isSelected,
isHovered,
k,
option.series[params.seriesIndex].pieData.value + 5
);
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
myChart.setOption(option);
}
});
// 修正取消高亮失败的 bug
myChart.on("globalout", function () {
// 准备重新渲染扇形所需的参数
let isSelected;
let isHovered;
let startRatio;
let endRatio;
let k;
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。
isSelected = option.series[hoveredIndex].pieStatus.selected;
isHovered = false;
k = option.series[hoveredIndex].pieStatus.k;
startRatio = option.series[hoveredIndex].pieData.startRatio;
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)
option.series[hoveredIndex].parametricEquation =
getParametricEquation(
startRatio,
endRatio,
isSelected,
isHovered,
k,
option.series[hoveredIndex].pieData.value
);
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
myChart.setOption(option);
});
}
// 使用生命钩子
onMounted(() => {
// 基于准备好的dom初始化echarts实例
// var myChart = echarts.init(document.getElementById('main'));
// Vue3中 需要引入
var myChart = echarts.init(chart.value)
//设置交互事件 鼠标移入 点击
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// bindListen(myChart)
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// init(); // vue3.2没有this
// 使用刚指定的配置项和数据显示图表。
myChart.setOption(option);
// 单图表响应式: 跟随浏览器大小改变
window.addEventListener('resize', () => {
myChart.resize()
})
})
</script>
<style scoped></style>