//做环形图的本质是 radius: ['内半径', '外半径'] 内半径!=0
//画渐变色的原理是：data里面可以设置itemStyle
let angle = 0; //角度，用来做简单的动画效果的
let timerId;
const value = 78; //今日完成78%
const backgroundColor = '#101736';
const title = {
text: '今日进度',
textStyle: {
color: '#fff',
fontSize: 16,
},
padding: 0,
top: 35,
left: 'center',
};
const legend = {
show: false,
};
const tooltip = {
show: false,
};
const colors = ['#A098FC', '#4386FA','#4FADFD','#0CD3DB','#646CF9'];
const innerRingColor = {
type: 'linear',
x: 0,
y: 0,
x2: 0,
y2: 1,
colorStops: [0,.3,.6,.8,1].map((offset,index)=>({offset,color:colors[index]})),
global: false, // 缺省为 false
};
option = {
backgroundColor,
color:colors,
title,
tooltip,
legend,
series: [
{
name: '',
type: 'pie',
center: ['50%', '50%'], //圆心的位置
radius: ['32%', '35%'], //环形图的本质就在这里 [内半径!=0，外半径] 外半径越大，圆越大
avoidLabelOverlap: false, //做同心圆用到
clockwise: false, //顺时针排列
startAngle: 90, //起始角度 影响不大
label: {
show: true, //false不显示饼图上的标签
position: 'center', //inside（在饼图上显示）,outside(默认就会出现引导线) center
formatter: '{d}%',
fontSize: 50,
fontWeight: 'bold',
},
data: [
{ value: value, name: '完成', itemStyle: { color: innerRingColor, opacity: 1 } },
{ value: 100 - value, name: '未完成', itemStyle: { color: '#282c40' } },
].sort((a, b) => b.value - a.value), //数组从大到小排序
emphasis: {
scale: false,
},
},
{
name: '',
type: 'pie',
center: ['50%', '50%'], //圆心的位置
radius: ['40%', '50%'], //环形图的本质就在这里 [内半径!=0，外半径] 外半径越大，圆越大
avoidLabelOverlap: false, //做同心圆用到
clockwise: false, //顺时针排列
startAngle: 90, //起始角度 影响不大
label: {
show: false, //false不显示饼图上的标签
},
data: [
{ value: value, name: '完成', itemStyle: { color: innerRingColor, opacity: 1 }},
{ value: 100 - value, name: '未完成', itemStyle: { color: '#282c40' } },
].sort((a, b) => b.value - a.value), //数组从大到小排序
emphasis: {
scale: false,
},
},
//colors[0]line
{
name: 'ring5',
type: 'custom',
coordinateSystem: 'none',
renderItem: function (params, api) {
return {
type: 'arc',
shape: {
cx: api.getWidth() / 2,
cy: api.getHeight() / 2,
r: (Math.min(api.getWidth(), api.getHeight()) / 2) * 0.6,
startAngle: ((0 + angle) * Math.PI) / 180,
endAngle: ((90 + angle) * Math.PI) / 180,
},
style: {
stroke: colors[0],
fill: 'transparent',
lineWidth: 1.5,
},
silent: true,
};
},
data: [0],
},
{
name: 'ring5', // //colors[0]dot
type: 'custom',
coordinateSystem: 'none',
renderItem: function (params, api) {
let x0 = api.getWidth() / 2;
let y0 = api.getHeight() / 2;
let r = (Math.min(api.getWidth(), api.getHeight()) / 2) * 0.6;
let point = getCirlPoint(x0, y0, r, 90 + angle);
return {
type: 'circle',
shape: {
cx: point.x,
cy: point.y,
r: 4,
},
style: {
stroke: colors[0],
fill: colors[0],
},
silent: true,
};
},
data: [0],
},
// 蓝色
{
name: 'ring5',
type: 'custom',
coordinateSystem: 'none',
renderItem: function (params, api) {
return {
type: 'arc',
shape: {
cx: api.getWidth() / 2,
cy: api.getHeight() / 2,
r: (Math.min(api.getWidth(), api.getHeight()) / 2) * 0.6,
startAngle: ((180 + angle) * Math.PI) / 180,
endAngle: ((270 + angle) * Math.PI) / 180,
},
style: {
stroke: colors[1],
fill: 'transparent',
lineWidth: 1.5,
},
silent: true,
};
},
data: [0],
},
{
name: 'ring5', // 蓝色
type: 'custom',
coordinateSystem: 'none',
renderItem: function (params, api) {
let x0 = api.getWidth() / 2;
let y0 = api.getHeight() / 2;
let r = (Math.min(api.getWidth(), api.getHeight()) / 2) * 0.6;
let point = getCirlPoint(x0, y0, r, 180 + angle);
return {
type: 'circle',
shape: {
cx: point.x,
cy: point.y,
r: 4,
},
style: {
stroke: colors[1], //绿
fill: colors[1],
},
silent: true,
};
},
data: [0],
},
{
name: 'ring5',
type: 'custom',
coordinateSystem: 'none',
renderItem: function (params, api) {
return {
type: 'arc',
shape: {
cx: api.getWidth() / 2,
cy: api.getHeight() / 2,
r: (Math.min(api.getWidth(), api.getHeight()) / 2) * 0.65,
startAngle: ((270 + -angle) * Math.PI) / 180,
endAngle: ((40 + -angle) * Math.PI) / 180,
},
style: {
stroke: colors[2],
fill: 'transparent',
lineWidth: 1.5,
},
silent: true,
};
},
data: [0],
},
// 橘色
{
name: 'ring5',
type: 'custom',
coordinateSystem: 'none',
renderItem: function (params, api) {
return {
type: 'arc',
shape: {
cx: api.getWidth() / 2,
cy: api.getHeight() / 2,
r: (Math.min(api.getWidth(), api.getHeight()) / 2) * 0.65,
startAngle: ((90 + -angle) * Math.PI) / 180,
endAngle: ((220 + -angle) * Math.PI) / 180,
},
style: {
stroke: colors[2],
fill: 'transparent',
lineWidth: 1.5,
},
silent: true,
};
},
data: [0],
},
{
name: 'ring5',
type: 'custom',
coordinateSystem: 'none',
renderItem: function (params, api) {
let x0 = api.getWidth() / 2;
let y0 = api.getHeight() / 2;
let r = (Math.min(api.getWidth(), api.getHeight()) / 2) * 0.65;
let point = getCirlPoint(x0, y0, r, 90 + -angle);
return {
type: 'circle',
shape: {
cx: point.x,
cy: point.y,
r: 4,
},
style: {
stroke: colors[3], //粉
fill: colors[3],
},
silent: true,
};
},
data: [0],
},
{
name: 'ring5', //绿点
type: 'custom',
coordinateSystem: 'none',
renderItem: function (params, api) {
let x0 = api.getWidth() / 2;
let y0 = api.getHeight() / 2;
let r = (Math.min(api.getWidth(), api.getHeight()) / 2) * 0.65;
let point = getCirlPoint(x0, y0, r, 270 + -angle);
return {
type: 'circle',
shape: {
cx: point.x,
cy: point.y,
r: 4,
},
style: {
stroke: colors[3], //绿
fill: colors[3],
},
silent: true,
};
},
data: [0],
},
],
};
//获取圆上面某点的坐标(x0,y0表示坐标，r半径，angle角度)
function getCirlPoint(x0, y0, r, angle) {
let x1 = x0 + r * Math.cos((angle * Math.PI) / 180);
let y1 = y0 + r * Math.sin((angle * Math.PI) / 180);
return {
x: x1,
y: y1,
};
}
function draw() {
angle = angle + 3;
myChart.setOption(option, true);
//window.requestAnimationFrame(draw);
}
draw();
setTimeout(function () {
if (timerId) {
clearInterval(timerId);
}
timerId = setInterval(function () {
//用setInterval做动画感觉有问题
draw();
}, 100);
}, 500);