本篇内容介绍了“echarts怎么实现3d柱状图”的有关知识，在实际案例的操作过程中，不少人都会遇到这样的困境，接下来就让小编带领大家学习一下如何处理这些情况吧！希望大家仔细阅读，能够学有所成！
echarts实现3d柱状图的两种方式
看了不少关于3d柱状图的案例,发现做3d柱状图 常用的两种方式就是 自定义图形和象型柱图, 两种实现方式效果如下:
方法1: echarts.graphic.extendShape 自定义图形
echarts自定义图形的详细用法点这里, 官网点这里, 图中第一个3d柱状图我参考的案例在这里, 看了很多 echarts这种3d案例, 自定义图形做3d柱状图,貌似只能有个柱子(可能 能做双柱,但是 我真的不会)
封装成组件的完整代码如下:
<template></template>
<script setup lang="ts">
import { nextTick, watch } from 'vue';
import echarts from '@/assets/ts/echarts';
import useResizeChart from '@/hooks/useResizeChart';
function mergeConfig(defaultConfig: object, config: object) {
return Object.assign(defaultConfig, config);
}
function initOption(): echarts.EChartsCoreOption {
// 绘制左侧面
const CubeLeft = echarts.graphic.extendShape({
shape: {
x: 0,
y: 0,
},
buildPath: function (ctx, shape) {
// 会canvas的应该都能看得懂，shape是从custom传入的
const xAxisPoint = shape.xAxisPoint;
const c0 = [shape.x + 3.5, shape.y];
const c1 = [shape.x - 11.5, shape.y - 3];
const c2 = [xAxisPoint[0] - 11.5, xAxisPoint[1] - 6.5];
const c3 = [xAxisPoint[0] + 3.5, xAxisPoint[1]];
ctx.moveTo(c0[0], c0[1])
// @ts-ignore
.lineTo(c1[0], c1[1])
.lineTo(c2[0], c2[1])
.lineTo(c3[0], c3[1])
.closePath();
},
});
// 绘制右侧面
const CubeRight = echarts.graphic.extendShape({
shape: {
x: 0,
y: 0,
},
buildPath: function (ctx, shape) {
const xAxisPoint = shape.xAxisPoint;
const c1 = [shape.x + 3, shape.y];
const c2 = [xAxisPoint[0] + 3, xAxisPoint[1]];
const c3 = [xAxisPoint[0] + 12, xAxisPoint[1] - 7];
const c4 = [shape.x + 12, shape.y - 7];
ctx.moveTo(c1[0], c1[1])
// @ts-ignore
.lineTo(c2[0], c2[1])
.lineTo(c3[0], c3[1])
.lineTo(c4[0], c4[1])
.closePath();
},
});
// 绘制顶面
const CubeTop = echarts.graphic.extendShape({
shape: {
x: 0,
y: 0,
},
buildPath: function (ctx, shape) {
const c1 = [shape.x + 3.5, shape.y];
const c2 = [shape.x + 12.5, shape.y - 7.5]; //右点
const c3 = [shape.x - 2.5, shape.y - 10];
const c4 = [shape.x - 11.5, shape.y - 3];
ctx.moveTo(c1[0], c1[1])
// @ts-ignore
.lineTo(c2[0], c2[1])
.lineTo(c3[0], c3[1])
.lineTo(c4[0], c4[1])
.closePath();
},
});
// 注册三个面图形
echarts.graphic.registerShape('CubeLeft', CubeLeft);
echarts.graphic.registerShape('CubeRight', CubeRight);
echarts.graphic.registerShape('CubeTop', CubeTop);
const VALUE = props.value;
const series = [
{
type: 'custom',
renderItem: (params: any, api: any) => {
let cubeLeftStyle = new echarts.graphic.LinearGradient(0, 0, 0, 1, [
{
offset: 0,
// @ts-ignore
color: props.color[0],
},
{
offset: 1,
color: 'rgba(7, 20, 52,0.7)',
},
]);
let cubeRightStyle = new echarts.graphic.LinearGradient(0, 0, 0, 1, [
{
offset: 0,
color: 'rgba(7, 20, 52,1)',
},
{
offset: 1,
// @ts-ignore
color: props.color[0],
},
]);
let cubeTopStyle = new echarts.graphic.LinearGradient(0, 0, 0, 1, [
{
offset: 0,
// @ts-ignore
color: props.color[1] || props.color[0],
},
]);
const location = api.coord([api.value(0), api.value(1)]);
return {
type: 'group',
children: [
{
type: 'CubeLeft',
shape: {
api,
xValue: api.value(0),
yValue: api.value(1),
x: location[0],
y: location[1],
xAxisPoint: api.coord([api.value(0), 0]),
},
style: {
fill: cubeLeftStyle,
},
},
{
type: 'CubeRight',
shape: {
api,
xValue: api.value(0),
yValue: api.value(1),
x: location[0],
y: location[1],
xAxisPoint: api.coord([api.value(0), 0]),
},
style: {
fill: cubeRightStyle,
},
},
{
type: 'CubeTop',
shape: {
api,
xValue: api.value(0),
yValue: api.value(1),
x: location[0],
y: location[1],
xAxisPoint: api.coord([api.value(0), 0]),
},
style: {
fill: cubeTopStyle,
},
},
],
};
},
data: VALUE,
},
{
type: 'bar',
label: {
show: true,
position: 'top',
fontSize: 14,
color: props.color[0],
offset: [2, -10],
},
itemStyle: {
color: 'transparent',
},
tooltip: {},
data: VALUE,
},
];
const title = mergeConfig(
{
text: '',
textStyle: {
color: props.color[0],
fontWeight: '800',
fontSize: 12,
},
left: '18px',
top: '1%',
},
props.title,
);
const XAxisLine = mergeConfig(
{
show: false,
lineStyle: {
type: 'solid',
width: 1,
color: '#2c3954',
},
},
props.XAxisLine,
);
const YAxisLine = mergeConfig(
{
show: false,
lineStyle: {
show: true,
lineStyle: {
type: 'solid',
width: 1,
},
},
},
props.YAxisLine,
);
const legend = mergeConfig(
{
show: true,
left: 'center',
top: '95%',
icon: 'circle',
textStyle: {
color: '#fff',
},
},
props.legend,
);
const grid = mergeConfig(
{
left: '5%',
right: '5%',
top: '12%',
bottom: '0%',
containLabel: true,
},
props.grid,
);
const XSplitLine = mergeConfig(
{
show: false,
lineStyle: {
type: 'dashed',
width: 1,
},
},
props.XSplitLine,
);
// 纵坐标分割线配置
const YSplitLine = mergeConfig(
{
// 是否显示
// show: false,
show: true,
// 样式
lineStyle: {
color: '#13263e',
type: 'solid',
width: 1,
},
},
props.YSplitLine,
);
const XAxisTick = mergeConfig(
{
show: false,
length: 5,
inside: true,
alignWithLabel: true,
lineStyle: {
type: 'solid',
width: 1,
},
},
props.XAxisTick,
);
const YAxisTick = mergeConfig(
{
show: true,
length: 5,
inside: true,
alignWithLabel: true,
lineStyle: {
color: '#13263e',
type: 'solid',
width: 1,
},
},
props.YAxisTick,
);
let option: echarts.EChartsCoreOption = {
title,
tooltip: {
show: false,
// 指示器提示的坐标轴
trigger: 'axis',
// 阴影提示器
axisPointer: {
type: 'shadow',
shadowStyle: {
shadowColor: '#2e3e51', // 设置阴影的颜色
},
},
formatter: function (params: any) {
const item = params[1];
return item.name + ' : ' + item.value;
},
// 提示框背景颜色
backgroundColor: '#122843',
// 提示框边框颜色
borderColor: '#42D1F1',
// 提示框文本样式
textStyle: {
color: '#fff',
},
},
legend: legend,
grid: grid,
xAxis: {
type: 'category',
// boundaryGap: false,
data: props.xAxisData,
axisLine: XAxisLine,
splitLine: XSplitLine,
axisTick: XAxisTick,
axisLabel: {
//x轴文字的配置
show: true,
color: '#fff',
fontSize: 12,
rotate: 30,
},
},
yAxis: {
type: 'value',
name: props.yUnit,
nameTextStyle: {
color: '#fff',
fontSize: 16,
},
axisLine: YAxisLine,
splitLine: YSplitLine,
axisTick: YAxisTick,
axisLabel: {
//y轴文字的配置
color: '#fff',
fontSize: 12,
},
},
series,
};
option = Object.assign(option, props.config);
return option;
}
const props = defineProps({
pid: {
type: String,
required: true,
},
title: {
type: Object,
default: {},
},
xAxisData: {
type: Array,
required: true,
},
legend: {
type: Object,
default: {},
},
grid: {
type: Object,
default: {},
},
XAxisLine: {
type: Object,
default: {},
},
YAxisLine: {
type: Object,
default: {},
},
yUnit: {
type: String,
default: '',
},
XSplitLine: {
type: Object,
default: {},
},
YSplitLine: {
type: Object,
default: {},
},
XAxisTick: {
type: Object,
default: {},
},
YAxisTick: {
type: Object,
default: {},
},
config: {
type: Object as () => echarts.EChartsCoreOption,
default: {},
},
value: {
type: Array,
required: true,
},
// 柱子的颜色
color: {
type: Array,
&