xergioalex/.block

## .block
license: mit

## README.md

      
    Raw
  

              README.md
            
          
    Built with blockbuilder.org
forked from john-guerra's block: D3 Force Simulation

  
## index.html
<!DOCTYPE html>
<head>
  <meta charset="utf-8">

  <style>
  </style>
</head>

<body>
  <h1>Force Directed layout</h1>
  <svg
    width=800
    height=400
    id="network"></svg>

    <script src="https://d3js.org/d3.v4.min.js"></script>
  <script>
    // Copy drag from: https://bl.ocks.org/mbostock/4062045

    let svg = d3.select("#network"),
        width = +svg.attr("width"),
        height = + svg.attr("height"),
        N = 100,
        r = d3.scaleSqrt()
    			.domain([0, 50])
    			.range([1, 15]);

    let nodes = [
      {name:"John", age:23},
      {name:"Edwin", age:25},
      {name:"Santi", age:25},
      {name:"Eliza", age:22},
      {name:"Magda", age:32},
      {name:"Vicente", age:43},
      {name:"Sonia", age:44}
    ]

    let links = [
      {source:"John", target:"Vicente"},
      {source:"Edwin", target:"Vicente"},
      {source:"Santi", target:"Edwin"},
      {source:"Eliza", target:"Vicente"},
      {source:"Magda", target:"Vicente"},
      {source:"John", target:"Sonia"},
      {source:"Edwin", target:"Sonia"},
      {source:"Eliza", target:"Sonia"},

    ]
    console.log(width, height);

    let simulation = d3.forceSimulation(nodes)
    	.force("center", d3.forceCenter(width/2, height/2))
    	.force("charge", d3.forceManyBody().strength(-50))
    	.force("collide", d3.forceCollide(d => r(d.age) + 1))
    	.force("link", d3.forceLink(links)
            	.id((d) => d.name)
             .distance(100))

    	.on("tick", ticked);


    console.log("nodes", nodes);
    console.log("links", links);


    let sellinks = svg.selectAll(".link")
    	.data(links)
    	.enter()
    	.append("line")
    	.attr("class", "link")
      .style("stroke", "#aaa")
      .style("opacity", 0.9)

    let selnodes = svg.selectAll(".node")
    	.data(nodes)
    	.enter()
    	.append("circle")
    	.attr("class", "node")
      .style("fill", "steelblue")
      .attr("r", d => r(d.age))
      .call(d3.drag()
            .on("start", dragstarted)
            .on("drag", dragged)
            .on("end", dragended));

    selnodes.append("title")
    	.text(d => d.name);


   function ticked() {
			sellinks.attr("x1", (l) => l.source.x)
        .attr("y1", (l) => l.source.y)
        .attr("x2", (l) => l.target.x)
        .attr("y2", (l) => l.target.y);

      selnodes.attr("cx", (d) => d.x)
	      .attr("cy", (d) => d.y);
   }// ticked

function dragstarted(d) {
  if (!d3.event.active) simulation.alphaTarget(0.3).restart();
  d.fx = d.x;
  d.fy = d.y;
}

function dragged(d) {
  d.fx = d3.event.x;
  d.fy = d3.event.y;
}

function dragended(d) {
  if (!d3.event.active) simulation.alphaTarget(0);
  d.fx = null;
  d.fy = null;
}


  </script>
</body>
	<!DOCTYPE html>
	<head>
	<meta charset="utf-8">

	<style>
	</style>
	</head>

	<body>
	<h1>Force Directed layout</h1>
	<svg
	width=800
	height=400
	id="network"></svg>

	<script src="https://d3js.org/d3.v4.min.js"></script>
	<script>
	// Copy drag from: https://bl.ocks.org/mbostock/4062045

	let svg = d3.select("#network"),
	width = +svg.attr("width"),
	height = + svg.attr("height"),
	N = 100,
	r = d3.scaleSqrt()
	.domain([0, 50])
	.range([1, 15]);

	let nodes = [
	{name:"John", age:23},
	{name:"Edwin", age:25},
	{name:"Santi", age:25},
	{name:"Eliza", age:22},
	{name:"Magda", age:32},
	{name:"Vicente", age:43},
	{name:"Sonia", age:44}
	]

	let links = [
	{source:"John", target:"Vicente"},
	{source:"Edwin", target:"Vicente"},
	{source:"Santi", target:"Edwin"},
	{source:"Eliza", target:"Vicente"},
	{source:"Magda", target:"Vicente"},
	{source:"John", target:"Sonia"},
	{source:"Edwin", target:"Sonia"},
	{source:"Eliza", target:"Sonia"},

	]
	console.log(width, height);

	let simulation = d3.forceSimulation(nodes)
	.force("center", d3.forceCenter(width/2, height/2))
	.force("charge", d3.forceManyBody().strength(-50))
	.force("collide", d3.forceCollide(d => r(d.age) + 1))
	.force("link", d3.forceLink(links)
	.id((d) => d.name)
	.distance(100))

	.on("tick", ticked);


	console.log("nodes", nodes);
	console.log("links", links);


	let sellinks = svg.selectAll(".link")
	.data(links)
	.enter()
	.append("line")
	.attr("class", "link")
	.style("stroke", "#aaa")
	.style("opacity", 0.9)

	let selnodes = svg.selectAll(".node")
	.data(nodes)
	.enter()
	.append("circle")
	.attr("class", "node")
	.style("fill", "steelblue")
	.attr("r", d => r(d.age))
	.call(d3.drag()
	.on("start", dragstarted)
	.on("drag", dragged)
	.on("end", dragended));

	selnodes.append("title")
	.text(d => d.name);


	function ticked() {
	sellinks.attr("x1", (l) => l.source.x)
	.attr("y1", (l) => l.source.y)
	.attr("x2", (l) => l.target.x)
	.attr("y2", (l) => l.target.y);

	selnodes.attr("cx", (d) => d.x)
	.attr("cy", (d) => d.y);
	}// ticked

	function dragstarted(d) {
	if (!d3.event.active) simulation.alphaTarget(0.3).restart();
	d.fx = d.x;
	d.fy = d.y;
	}

	function dragged(d) {
	d.fx = d3.event.x;
	d.fy = d3.event.y;
	}

	function dragended(d) {
	if (!d3.event.active) simulation.alphaTarget(0);
	d.fx = null;
	d.fy = null;
	}














































	</script>
	</body>