最终效果图如下,一个具有鼠标滑过提示框,图例联动,图例翻页的3D饼图
一、创建基本3D饼图展示
1、创建Pie3D.vue文件
<template>
<div>
<p>D3JS实现的3D饼图</p>
<div id="abc"></div>
</div>
</template>
<script setup>
import pie from '../utils/pie'
import { onMounted, reactive } from 'vue';
let config = reactive({
color:["#0f7eee","#24Daff","#FFFF80","#caf982","#80DCff"]
})
//基础数据
const salesData = [
{label: "2023-05-01", value: 61, DWMC:'俩'},
{label: "2023-05-02", value: 70, DWMC:'俩'},
{label: "2023-05-03", value: 67, DWMC:'俩'},
{label: "2023-05-04", value: 21, DWMC:'俩'},
{label: "2023-05-05", value: 23, DWMC:'俩'},
{label: "2023-05-06", value: 82, DWMC:'俩'},
{label: "2023-05-06", value: 26, DWMC:'俩'},
{label: "2023-05-06", value: 57, DWMC:'俩'}
];
onMounted(() => {
pie('#abc', 700, 400, salesData, 250, 200, 150, 100, 30, config)
})
</script>
<style>
/* 样式 */
#abc{
width: 700px;
height: 400px;
}
</style>
2、在utils目录中创建pie.js文件 该文件就是渲染3D饼图的主文件
import * as d3 from 'd3';
import { pieInner, pieTop, pieOuter } from '../utils/renderUtils'
/**
* 生成3d饼图
* @param {*} id :id唯一标识
* @param {*} width :svg的宽
* @param {*} height :svg的高
* @param {*} data :要渲染的数据
* @param {*} x :横向偏移量
* @param {*} y :纵向偏移量
* @param {*} rx :饼图的横向半径
* @param {*} ry :饼图的纵向半径
* @param {*} h :饼图的高度
*/
export default function pie(id, width, height, data, x, y, rx, ry, h, config,ir=0){
//先移除所有的svg
d3.select(id).selectAll('svg').remove();
//创建一个svg容器,用来存放饼图
const pieSvg = d3
.select(id)
.append('svg')
.attr('width','100%')
.attr('height','100%');
pieSvg.append('g').attr('id','pie_chart');
//生成饼图数据
const dataset = d3
.pie()
.sort(null)
.value((d) => {
return d.value
})(data);
// 获取上面插入的g
const slices = d3
.select('#pie_chart')
.append('g')
.attr('transform','translate(350,200)')
.attr('class','slices')
.style('cursor','pointer');
//生成环形内曲面
slices
.selectAll('.innerSlice')
.data(dataset)
.enter()
.append('path')
.attr('class','innerSlice')
.style('fill',(d,index) => {
let colorIndex = index % config.color.length
return d3.hsl(config.color[colorIndex]).darker(0.7)
})
.attr('d',d => {
return pieInner(d, rx+0.5, ry+0.5, h, ir)
});
//上层2D平面
slices.selectAll('.topSlice')
.data(dataset)
.enter()
.append('path')
.transition()
.delay(0)
.duration(500)
.attrTween('d',(d) => {
//动画效果
let interpolate = d3.interpolate(d.startAngle, d.endAngle);
return function(t){
d.endAngle = interpolate(t);
return pieTop(d, rx, ry, ir)
}
})
.attr('class','topSlice')
.style('fill',(d,index) => {
let colorIndex = index % config.color.length
return config.color[colorIndex]
})
.style('stroke',(d,index) => {
let colorIndex = index % config.color.length
console.log(config.color[colorIndex],'==config.color[colorIndex]')
return config.color[colorIndex]
})
//侧面曲面
slices.selectAll('.outerSlice')
.data(dataset)
.enter()
.append('path')
.transition()
.delay(0)
.duration(500)
.attrTween('d',(d) => {
//动画效果
let interpolate = d3.interpolate(d.startAngle, d.endAngle);
return function(t){
d.endAngle = interpolate(t);
return pieOuter(d, rx- 0.5, ry - 0.5, h)
}
})
.attr('class','outerSlice')
.style('fill',(d,index) => {
let colorIndex = index % config.color.length
return d3.hsl(config.color[colorIndex]).darker(0.7)
});
}
3、创建renderUtils.js文件里面包含渲染3D饼图的算法函数
//生成内曲面
export function pieInner(d,rx,ry,h,ir){
const startAngle = d.startAngle < Math.PI ? Math.PI : d.startAngle;
const endAngle = d.endAngle < Math.PI ? Math.PI : d.endAngle;
const sx = ir * rx * Math.cos(startAngle);
const sy = ir * ry * Math.sin(startAngle);
const ex = ir * rx * Math.cos(endAngle);
const ey = ir * ry * Math.sin(endAngle);
const ret = [];
ret.push(
'M',
sx,
sy,
'A',
ir * rx,
ir * ry,
'0 0 1',
ex,
ey,
'L',
ex,
h + ey,
'A',
ir * rx,
ir * ry,
'0 0 0',
sx,
h + sy,
'z'
);
return ret.join(' ');
}
// 生成饼图的顶部
export function pieTop(d, rx, ry, ir) {
if (d.endAngle - d.startAngle === 0) { return 'M 0 0'; }
const sx = rx * Math.cos(d.startAngle);
const sy = ry * Math.sin(d.startAngle);
const ex = rx * Math.cos(d.endAngle);
const ey = ry * Math.sin(d.endAngle);
const ret = [];
ret.push(
'M',
sx,
sy,
'A',
rx,
ry,
'0',
d.endAngle - d.startAngle > Math.PI ? 1 : 0,
'1',
ex,
ey,
'L',
ir * ex,
ir * ey
);
ret.push(
'A',
ir * rx,
ir * ry,
'0',
d.endAngle - d.startAngle > Math.PI ? 1 : 0,
'0',
ir * sx,
ir * sy,
'z'
);
return ret.join(' ');
}
// 外曲面算法
export function pieOuter(d, rx, ry, h) {
const startAngle = d.startAngle > Math.PI ? Math.PI : d.startAngle;
const endAngle = d.endAngle > Math.PI ? Math.PI : d.endAngle;
const sx = rx * Math.cos(startAngle);
const sy = ry * Math.sin(startAngle);
const ex = rx * Math.cos(endAngle);
const ey = ry * Math.sin(endAngle);
const ret = [];
ret.push(
'M',
sx,
h + sy,
'A',
rx,
ry,
'0 0 1',
ex,
h + ey,
'L',
ex,
ey,
'A',
rx,
ry,
'0 0 0',
sx,
sy,
'z'
);
return ret.join(' ');
}
文件运行结果如下,此时已经创建了基本的3D饼图文章来源:https://www.toymoban.com/news/detail-760895.html
文章来源地址https://www.toymoban.com/news/detail-760895.html
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