下载: npm i echarts-gl
import "echarts-gl";
echarts1() {
const myChart = this.$echarts.init(document.getElementById("echarts1"));
// data数据
var data = [
{
name: "本科",
value: 40,
number: 120,
itemStyle: {
// 透明度
opacity: 0.7,
// 扇形颜色
color: "rgba(32,159,237,1)",
},
},
{
name: "硕士",
value: 30,
number: 80,
itemStyle: {
// 透明度
opacity: 0.7,
// 扇形颜色
color: "rgba(255,159,32,1)",
},
},
{
name: "大专",
value: 20,
number: 60,
itemStyle: {
// 透明度
opacity: 0.7,
// 扇形颜色
color: "rgba(159,255,237,1)",
},
},
{
name: "博士",
value: 10,
number: 10,
itemStyle: {
// 透明度
opacity: 0.7,
// 扇形颜色
color: "rgba(159,255,32,1)",
},
},
{
name: "其他",
// 占比值
value: 20,
// 悬浮框值
number: 20,
itemStyle: {
// 透明度
opacity: 0.7,
// 扇形颜色
color: "rgba(16,130,3,1)",
},
},
];
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;
},
};
}
function getPie3D(pieData, internalDiameterRatio) {
let series = [];
let sumValue = 0;
let startValue = 0;
let endValue = 0;
let legendData = [];
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
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,
value:
typeof pieData[i].value === "undefined"
? `series${i}`
: pieData[i].value,
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;
}
seriesItem.label = {
formatter: "{a|{a}}{abg|}\n{hr|}\n {b|{b}:}{c} {per|{d}%} ",
backgroundColor: "#eee",
borderColor: "#aaa",
borderWidth: 1,
borderRadius: 4,
// shadowBlur:3,
// shadowOffsetX: 2,
// shadowOffsetY: 2,
// shadowColor: '#999',
// padding: [0, 7],
rich: {
a: {
color: "#999",
lineHeight: 22,
align: "center",
},
// abg: {
// backgroundColor: '#333',
// width: '100%',
// align: 'right',
// height: 22,
// borderRadius: [4, 4, 0, 0]
// },
hr: {
borderColor: "#aaa",
width: "100%",
borderWidth: 0.5,
height: 0,
},
b: {
fontSize: 16,
lineHeight: 33,
},
per: {
color: "#eee",
backgroundColor: "#334455",
padding: [2, 4],
borderRadius: 2,
},
},
};
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 = getParametricEquation(
series[i].pieData.startRatio,
series[i].pieData.endRatio,
false,
false,
k,
series[i].pieData.value
);
startValue = endValue;
legendData.push(series[i].name);
}
// 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,
},
itemStyle: {
opacity: 0,
},
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);
},
y: function (u, v) {
return Math.sin(v) * Math.cos(u) + Math.cos(u);
},
z: function (u, v) {
return Math.cos(v) > 0 ? 0.1 : -0.1;
},
},
});
// 准备待返回的配置项,把准备好的 legendData、series 传入。
let option = {
//animation: false,
// 图例图标
legend: {
show: false,
icon: "circle",
data: legendData,
top: 50,
width: 50,
itemGap: 20,
right: 40,
formatter: function (value) {
var res = "";
for (var i = 0; i < data.length; i++) {
if (data[i].name == value) {
res = pieData[i].name + data[i].number;
}
}
if (!res) {
res = value;
}
return res;
},
textStyle: {
color: "#fff",
fontSize: 16,
},
rich: {
align: "center",
text: {
fontSize: 14,
color: "#fff",
fontWeight: "500",
padding: [15, 0, 5, 0],
},
},
color: "#fff",
},
tooltip: {
backgroundColor: "transparent",
textStyle: {
// 提示框浮层的文本样式。
color: "#fff",
fontStyle: "normal",
fontWeight: "normal",
fontFamily: "sans-serif",
fontSize: 14,
},
formatter: (params) => {
if (params.seriesName !== "mouseoutSeries") {
return `${
params.seriesName
}
${
params.color
};">${option.series[params.seriesIndex].pieData.number}%`;
}
},
},
xAxis3D: {
min: -1,
max: 1,
},
yAxis3D: {
min: -1,
max: 1,
},
zAxis3D: {
min: -1,
max: 1,
},
grid3D: {
left: "-10%",
top: 0,
show: false,
// 3D高度
boxHeight: 20,
viewControl: {
//3d效果可以放大、旋转等,请自己去查看官方配置
alpha: 40,
// beta: 40,
rotateSensitivity: 0,
zoomSensitivity: 0,
panSensitivity: 0,
autoRotate: false,
},
//后处理特效可以为画面添加高光、景深、环境光遮蔽(SSAO)、调色等效果。可以让整个画面更富有质感。
postEffect: {
//配置这项会出现锯齿,请自己去查看官方配置有办法解决
enable: true,
bloom: {
enable: true,
bloomIntensity: 0,
},
SSAO: {
enable: false,
quality: "medium",
radius: 2,
},
},
},
series: series,
};
return option;
}
// 第二个参数控制饼图的粗细
let option = getPie3D(data, 0.55);
myChart.setOption(option);
},