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2 years ago
<template>
<div class="chart-container">
<div class="chart" ref="chart"></div>
<!-- 底座背景 -->
<div class="bg"></div>
<div style="margin: auto; width: 486px; height: 316px" ref="pie3d" />
</div>
</template>
<script>
export default {
data() {
return {
optionData: [
{
code: "3",
name: "病区四",
cws: 80,
zcs: 20,
zcl: "25%",
value: 80,
startRatio: 0,
endRatio: 0.34782608695652173,
},
{
code: "0",
name: "病区一",
cws: 60,
zcs: 30,
zcl: "50%",
value: 60,
startRatio: 0.34782608695652173,
endRatio: 0.6086956521739131,
},
{
code: "2",
name: "病区三",
cws: 50,
zcs: 20,
zcl: "40%",
value: 50,
startRatio: 0.6086956521739131,
endRatio: 0.8260869565217391,
},
{
code: "1",
name: "病区二",
cws: 40,
zcs: 30,
zcl: "75%",
value: 40,
startRatio: 0.8260869565217391,
endRatio: 1,
},
],
};
},
mounted() {
this.myChart = this.$echarts.init(this.$refs.pie3d);
this.setLabel()
this.init();
},
methods: {
//初始化构建
setLabel() {
const that = this;
this.optionData.forEach((item, index) => {
// item.itemStyle = {
// color: that.color[index],
// };
item.label = {
normal: {
show: true,
// color: that.color[index],
formatter: ["{b|{b}}", "{c|{c}}{b|台}", "{d|{d}%}"].join("\n"), // 用\n来换行
rich: {
b: {
color: "#fff",
lineHeight: 25,
align: "left",
},
c: {
fontSize: 22,
color: "#fff",
textShadowColor: "#1c90a6",
textShadowOffsetX: 0,
textShadowOffsetY: 2,
textShadowBlur: 5,
},
d: {
// color: that.color[index],
align: "left",
},
},
},
};
item.labelLine = {
normal: {
lineStyle: {
width: 1,
color: "rgba(255,255,255,0.7)",
},
},
};
});
},
init() {
// 传入数据生成 option ; getPie3D(数据透明的空心占比调节中间空心范围的0就是普通饼1就很镂空)
this.option = this.getPie3D(this.optionData, 0.85);
//将配置项设置进去
this.myChart.setOption(this.option);
//鼠标移动上去特效效果
this.bindListen(this.myChart);
},
// 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。
bindListen(myChart) {
let that = this;
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 =
!that.option.series[params.seriesIndex].pieStatus.selected;
let isHovered =
that.option.series[params.seriesIndex].pieStatus.hovered;
let k = that.option.series[params.seriesIndex].pieStatus.k;
let startRatio =
that.option.series[params.seriesIndex].pieData.startRatio;
let endRatio = that.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) {
that.option.series[selectedIndex].parametricEquation =
that.getParametricEquation(
that.option.series[selectedIndex].pieData.startRatio,
that.option.series[selectedIndex].pieData.endRatio,
false,
false,
k,
that.option.series[selectedIndex].pieData.value
);
that.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)
that.option.series[params.seriesIndex].parametricEquation =
that.getParametricEquation(
startRatio,
endRatio,
isSelected,
isHovered,
k,
that.option.series[params.seriesIndex].pieData.value
);
that.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(that.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 = that.option.series[hoveredIndex].pieStatus.selected;
isHovered = false;
startRatio = that.option.series[hoveredIndex].pieData.startRatio;
endRatio = that.option.series[hoveredIndex].pieData.endRatio;
k = that.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)
that.option.series[hoveredIndex].parametricEquation =
that.getParametricEquation(
startRatio,
endRatio,
isSelected,
isHovered,
k,
that.option.series[hoveredIndex].pieData.value
);
that.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 =
that.option.series[params.seriesIndex].pieStatus.selected;
isHovered = true;
startRatio =
that.option.series[params.seriesIndex].pieData.startRatio;
endRatio = that.option.series[params.seriesIndex].pieData.endRatio;
k = that.option.series[params.seriesIndex].pieStatus.k;
// 对当前点击的扇形,执行高亮操作(对 option 更新)
that.option.series[params.seriesIndex].parametricEquation =
that.getParametricEquation(
startRatio,
endRatio,
isSelected,
isHovered,
k,
that.option.series[params.seriesIndex].pieData.value + 5
);
that.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(that.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 = that.option.series[hoveredIndex].pieStatus.selected;
isHovered = false;
k = that.option.series[hoveredIndex].pieStatus.k;
startRatio = that.option.series[hoveredIndex].pieData.startRatio;
endRatio = that.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)
that.option.series[hoveredIndex].parametricEquation =
that.getParametricEquation(
startRatio,
endRatio,
isSelected,
isHovered,
k,
that.option.series[hoveredIndex].pieData.value
);
that.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(that.option);
});
},
getPie3D(pieData, internalDiameterRatio) {
let that = this;
let series = [];
let sumValue = 0;
let startValue = 0;
let endValue = 0;
let legendData = [];
let legendBfb = [];
let k = 1 - internalDiameterRatio;
pieData.sort((a, b) => {
return b.value - a.value;
});
// 为每一个饼图数据,生成一个 series-surface(参数曲面) 配置
for (let i = 0; i < pieData.length; i++) {
sumValue += pieData[i].value;
let seriesItem = {
//系统名称
name:
typeof pieData[i].name === "undefined"
? `series${i}`
: pieData[i].name,
type: "surface",
//是否为参数曲面(是)
parametric: true,
//曲面图网格线(否)上面一根一根的
wireframe: {
show: false,
},
pieData: pieData[i],
pieStatus: {
selected: false,
hovered: false,
k: k,
},
};
//曲面的颜色、不透明度等样式。
// if (typeof pieData[i].itemStyle != "undefined") {
// let itemStyle = {};
// typeof pieData[i].itemStyle.color != "undefined"
// ? (itemStyle.color = pieData[i].itemStyle.color)
// : null;
// typeof pieData[i].itemStyle.opacity != "undefined"
// ? (itemStyle.opacity = pieData[i].itemStyle.opacity)
// : null;
// seriesItem.itemStyle = itemStyle;
// }
series.push(seriesItem);
}
// 使用上一次遍历时,计算出的数据和 sumValue调用 getParametricEquation 函数,
// 向每个 series-surface 传入不同的参数方程 series-surface.parametricEquation也就是实现每一个扇形。
legendData = [];
legendBfb = [];
for (let i = 0; i < series.length; i++) {
endValue = startValue + series[i].pieData.value;
series[i].pieData.startRatio = startValue / sumValue;
series[i].pieData.endRatio = endValue / sumValue;
series[i].parametricEquation = this.getParametricEquation(
series[i].pieData.startRatio,
series[i].pieData.endRatio,
false,
false,
k,
series[i].pieData.value
);
startValue = endValue;
let bfb = that.fomatFloat(series[i].pieData.value / sumValue, 4);
legendData.push({
name: series[i].name,
value: bfb,
});
legendBfb.push({
name: series[i].name,
value: bfb,
});
}
//(第二个参数可以设置你这个环形的高低程度)
let boxHeight = this.getHeight3D(series, 15); //通过传参设定3d饼/环的高度
// 准备待返回的配置项,把准备好的 legendData、series 传入。
let option = {
//图例组件
legend: {
data: legendData,
//图例列表的布局朝向。
orient: "horizontal",
left: "0%",
//图例文字每项之间的间隔
itemGap: 10,
textStyle: {
color: "#A1E2FF",
fontSize: "0.5rem",
},
show: true,
icon: "circle",
//格式化图例文本(我是数值什么显示什么)
// formatter: function (name) {
// var target;
// for (var i = 0, l = pieData.length; i < l; i++) {
// if (pieData[i].name == name) {
// target = pieData[i].value;
// }
// }
// return `${name}: ${target}`;
// }
// 这个可以显示百分比那种(可以根据你想要的来配置)
// formatter: function(param) {
// let item = legendBfb.filter(item => item.name == param)[0];
// let bfs = that.fomatFloat(item.value * 100, 2) + "%";
// console.log(item.name)
// return `${item.name} :${bfs}`;
// }
},
//移动上去提示的文本内容
tooltip: {
formatter: (params) => {
if (
params.seriesName !== "mouseoutSeries" &&
params.seriesName !== "pie2d"
) {
let bfb = (
(option.series[params.seriesIndex].pieData.endRatio -
option.series[params.seriesIndex].pieData.startRatio) *
100
).toFixed(2);
return (
`${params.seriesName}<br/>` +
`<span style="display:inline-block;margin-right:5px;border-radius:10px;width:10px;height:10px;background-color:${params.color};"></span>` +
`${bfb}`
);
}
},
},
//这个可以变形
xAxis3D: {
min: -1,
max: 1,
},
yAxis3D: {
min: -1,
max: 1,
},
zAxis3D: {
min: -1,
max: 1,
},
//此处是修改样式的重点
grid3D: {
show: false,
boxHeight: boxHeight, //圆环的高度
//这是饼图的位置
top: "15%",
viewControl: {
//3d效果可以放大、旋转等请自己去查看官方配置
alpha: 35, //角度(这个很重要 调节角度的)
distance: 165, //调整视角到主体的距离类似调整zoom(这是整体大小)
rotateSensitivity: 1, //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;
},
getHeight3D(series, height) {
series.sort((a, b) => {
return b.pieData.value - a.pieData.value;
});
return (height * 25) / series[0].pieData.value;
},
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;
},
};
},
fomatFloat(num, n) {
var f = parseFloat(num);
if (isNaN(f)) {
return false;
}
f = Math.round(num * Math.pow(10, n)) / Math.pow(10, n); // n 幂
var s = f.toString();
var rs = s.indexOf(".");
//判定如果是整数增加小数点再补0
if (rs < 0) {
rs = s.length;
s += ".";
}
while (s.length <= rs + n) {
s += "0";
}
return s;
},
},
};
</script>
<style lang='scss' scoped>
.chart-container {
position: relative;
width: 100%;
height: 100%;
.chart,.pie3d,
.bg {
width: 100%;
height: 100%;
}
.bg {
position: absolute;
bottom: 50px;
left: 50%;
z-index: -1;
width: 180px;
height: 73px;
background: no-repeat center;
background-image: url("https://ks3-cn-beijing.ksyun.com/sxjg-elevator/datav-platform-2.0/images/chart_opacity_bg.png");
background-size: 100% 100%;
transform: translateX(-50%);
}
}
</style>