d3实现树状生长动画效果代码-html代码-BFW代码库

d3实现树状生长动画效果代码

代码语言：html

所属分类：动画

代码描述：d3实现树状生长动画效果代码

下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开

<!DOCTYPE html>
<html lang="en" >

<head>

  <meta charset="UTF-8">

  
  
  
<style>
* {
  padding: 0;
  margin: 0;
}
body,
html {
  height: 100%;
  width: 100%;
  overflow: hidden;
  background: #697ba7;
  background: radial-gradient(ellipse at center, #001b36 0%, #000 100%);
}
h1 {
  font-weight: 300;
  font-size: 3em;
}
line {
  fill: none;
  stroke: #4682b4;
  stroke-width: 1.5;
}
circle {
  fill: #fff;
  stroke: #000;
  stroke-width: 0.5;
}
</style>


</head>

<body  >
  
<script type="text/javascript" src="//repo.bfw.wiki/bfwrepo/js/d3.v3.js"></script>
      <script >
(function(env){
    
    const PI2 = 2 * Math.PI;
    const radius = (r) => 1 + Math.sqrt(16 * r);
    const isNaN = (v) => Number.isNaN(Number(v));
    let lastEvent;
    
    class Canvas {

        constructor(width, height) {
            this.canvas = document.createElement("canvas");
            this.canvas.width = width;
            this.canvas.height = height;
            this.ctx = this.canvas.getContext("2d");
            document.body.appendChild(this.canvas);
            let zoom = this.zoom = d3.behavior.zoom()
                .size([width, height])
                .scaleExtent([.2, 1])
                .on("zoom", () => {
                    lastEvent = d3.event;
                });
            this.d3canvas = d3.select(this.canvas).call(zoom)
        }

        get width() {
            return this.canvas.width
        }

        get height() {.........完整代码请登录后点击上方下载按钮下载查看