D3泰森多边形示例代码

<!DOCTYPE html>
<meta charset="utf-8">
<style>.triangles {fill: none;
}.links {stroke: #000;
}.sites {fill: #000;   //黑色stroke: #fff;  //白色
}.triangles .primary {fill: #f00;
}.links .primary {stroke: #fff;
}.sites :first-child {fill: #fff;
}</style>
<svg width="960" height="500"></svg>
<!--
<script src="https://d3js.org/d3.v4.min.js"></script>
--><script src="./d3_5.14.2.min.js"></script>
<script>var svg = d3.select("svg")width = +svg.attr("width"),height = +svg.attr("height");
debugger//生成随机的坐标点
var sites = d3.range(10).map(function(d) { return [Math.random() * width, Math.random() * height]; });
/**
var sites =[[267.9209975005688, 379.3751254981226],[943.7398333408541, 418.65866999340903],[479.52144481621383, 380.00693430254785],[187.47809023912828, 38.27165834711255],[405.9934965423606, 26.394513050200462],[510.66798177187104, 98.63893482407582],[577.1853032467536, 126.1476827753022],[116.91624923957548, 456.1918205970447],[62.400157804006184, 258.10840657921386],[241.32040003222505, 447.48491825904756]];
**/var voronoi = d3.voronoi();//这里在这个示例里面没用可以删除
var triangle = svg.append("g").attr("class", "triangles").selectAll("path").data(voronoi.triangles(sites)).enter().append("path")debugger//画线
var link = svg.append("g").attr("class", "links").selectAll("line").data(voronoi.links(sites)).enter().append("line").call(redrawLink);//.attr("r", 5.5)  设置顶点大小function redrawLink(link) {link//  .classed("primary", function(d) { return d.source === sites[0] || d.target === sites[0]; }).attr("x1", function(d) { return d.source[0]; }).attr("y1", function(d) { return d.source[1]; }).attr("x2", function(d) { return d.target[0]; }).attr("y2", function(d) { return d.target[1]; });
}
</script>