html部分
js部分getEcharts() {
const data = [
{
name: "满意",
value: 30,
// itemStyle: { color: "#124E99", opacity: 0.3 },
startRatio: 0,
endRatio: 0.7
},
{
name: "非常满意",
value: 45,
// itemStyle: { color: "#124E99", opacity: 0.3 },
startRatio: 0.7,
endRatio: 1
},
{
name: "满意",
value: 16,
// itemStyle: { color: "#124E99", opacity: 0.3 },
startRatio: 0.7,
endRatio: 1
},
{
name: "基本满意",
value: 14,
// itemStyle: { color: "#124E99", opacity: 0.3 },
startRatio: 0.7,
endRatio: 1
},
{
name: "不满意",
value: 15,
// itemStyle: { color: "#124E99", opacity: 0.3 },
startRatio: 0.7,
endRatio: 1
}
];
let dom = document.getElementById("main");
let myEcharts = this.$echarts.init(dom);
const option = this.getPie3D(data, 0.8);
//是否需要label指引线,如果要就添加一个透明的2d饼状图并调整角度使得labelLine和3d的饼状图对齐,并再次setOption
option.series.push({
name: "pie2d",
type: "pie",
labelLine: {
length: 20,
length2: 20
},
startAngle: -25, //起始角度,支持范围[0, 360]。
clockwise: false, //饼图的扇区是否是顺时针排布。上述这两项配置主要是为了对齐3d的样式
radius: ["55%", "55%"],
center: ["55%", "45%"], //指示线的位置
data: data,
itemStyle: {
opacity: 0
},
hoverAnimation:false
});
myEcharts.setOption(option);
},
/**
*
* @param {指标数据} pieData
* @param {透明的空心占比} internalDiameterRatio
*/
getPie3D(pieData, internalDiameterRatio) {
let series = [];
let sumValue = 0; //总和
let startValue = 0; //开始比例
let endValue = 0; //结尾比例
let k = 1;
pieData.sort((a, b) => {
return b.value - a.value;
});
// 为每一个饼图数据,生成一个 series-surface 配置
for (let i = 0; i < pieData.length; i++) {
sumValue += pieData[i].value;
let seriesItem = {
name:
typeof pieData[i].name === "undefined"
? `series${i}`
: pieData[i].name,
type: "surface",
parametric: true,
wireframe: {
show: false
},
pieData: pieData[i],
pieStatus: {
selected: false,
hovered: false,
k: k
},
radius: "50%",
center: ["10%", "10%"],
itemStyle:{ color: "#124E99", opacity: 0.3 },
};
// 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;
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 boxHeight = this.getHeight3D(series, 25); //通过传参设定3d饼/环的高度,26代表26px
// 准备待返回的配置项,把准备好的 legendData、series 传入。
let option = {
backgroundColor: "#ffffff",
labelLine: {
show: true,
lineStyle: {
color: "#124E99"
}
},
label: {
show: true,
position: "outside",
rich: {
b: {
fontSize: 16,
lineHeight: 16,
fontWeight: "bold",
color: "#124E99"
},
c: {
fontSize: 14,
color: "#124E99"
}
},
formatter: "{b|{b}}\n{c|{c}%}"
},
tooltip: {
backgroundColor: "#053A8D",
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}%`
);
}
}
},
xAxis3D: {
min: -1,
max: 1
},
yAxis3D: {
min: -1,
max: 1
},
zAxis3D: {
min: -1,
max: 1
},
grid3D: {
show: false,
boxHeight: boxHeight, //圆环的高度
left: 0,
top: 0, //3d饼图的位置
viewControl: {
//3d效果可以放大、旋转等,请自己去查看官方配置
alpha: 40, //角度
distance: 250, //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
};
return option;
},
//获取3d丙图的最高扇区的高度
getHeight3D(series, height) {
series.sort((a, b) => {
return b.pieData.value - a.pieData.value;
});
return (height * 25) / series[0].pieData.value;
},
// 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
//起始角度,结束角度 , , , k,高
let midRatio = (startRatio + endRatio) / 2; //中间角
let startRadian = startRatio * Math.PI * 2; //起始角度
let endRadian = endRatio * Math.PI * 2; //结束角度
let midRadian = midRatio * Math.PI * 2; //中间角度
// 如果只有一个扇形,则不实现选中效果。
if (startRatio === 0 && endRatio === 1) {
isSelected = true;
}
// 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) * 0.5 : 0;
let offsetY = isSelected ? Math.sin(midRadian) * 0.5 : 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 * 2,
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 +
0.01 +
0.4
);
}
if (u > endRadian) {
return (
offsetX +
Math.cos(endRadian) * (1 + Math.cos(v) * k) * hoverRate -
0.01 +
0.4
);
}
return (
offsetX + Math.cos(u) * (1 + Math.cos(v) * k) * hoverRate + 0.4
);
},
y: function(u, v) {
if (u < startRadian) {
return (
offsetY +
Math.sin(startRadian) * (1 + Math.cos(v) * k) * hoverRate +
0.01 +
0.4
);
}
if (u > endRadian) {
return (
offsetY +
Math.sin(endRadian) * (1 + Math.cos(v) * k) * hoverRate -
0.01 +
0.4
);
}
return (
offsetY + Math.sin(u) * (1 + Math.cos(v) * k) * hoverRate + 0.4
);
},
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;
}
};
}
} }; 代码参考echarts社区3d饼图案例