llvm微型编译器TinyCompiler-master分析
var width = 1000,
height = 1000;
//定义数据转换函数
var tree = d3.layout.tree()
.size([width,height-200]);
//定义对角线生成器diagonal
var diagonal = d3.svg.diagonal()
.projection(function(d){return [d.y, d.x]});
//定义svg
var svg = d3.select("body").append("svg")
.attr("width",width)
.attr("height",height)
.append("g")
.attr("transform","translate(40,0)");
//读取json文件，进行绘图
d3.json("A_tree.json",function(erro,root){
var nodes = tree.nodes(root);
var links = tree.links(nodes);
//画点
var node = svg.selectAll(".node")
.data(nodes)
.enter()
.append("g")
.attr("class","node")
.attr("transform",function(d){return "translate("+ d.y+","+ d.x+")"});
//加圈圈
node.append("circle")
.attr("r",4.5);
//加文字
node.append("text")
.attr("dx",function(d){return d.children?-8:8;})
.attr("dy",3)
.style("text-anchor", function (d) {return d.children?"end":"start"})
.text(function (d) {return d.name});
//画线
var line = svg.selectAll("link")
.data(links)
.enter()
.append("path")
.attr("class","link")
.attr("d",diagonal);
});