Move the slider to interpolate between a tree layout and a force-directed layout.
Based on Jim Vallandingham's talk, Abusing The Force.
Last active
December 16, 2015 21:13
-
-
Save plmrry/67157e92d61ebe1cff75 to your computer and use it in GitHub Desktop.
Tree-to-Force Interpolation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <script src="http://d3js.org/d3.v3.min.js"></script> | |
| <meta charset="utf-8"> | |
| </head> | |
| <body> | |
| <script src="script.js"></script> | |
| </body> | |
| </html> |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| var width = window.innerWidth * 0.5, | |
| height = window.innerHeight * 0.5, | |
| margin = { top: 50, left: 50, bottom: 50, right: 50 }; | |
| var rangeScale = d3.scale.pow() | |
| .exponent(10) | |
| .clamp(true) | |
| d3.select("body").append("input") | |
| .attr({ type: "range", value: 0, min: 0, max: 1, step: 0.01 }) | |
| .on("input", function() { | |
| mix = rangeScale(this.value); | |
| force.start(); | |
| }); | |
| var g = d3.select("body") | |
| .append("svg") | |
| .attr({ | |
| width: width + margin.left + margin.right, | |
| height: height + margin.top + margin.bottom | |
| }) | |
| .append("g") | |
| .attr({ | |
| transform: "translate(" + [margin.left, margin.top] + ")" | |
| }); | |
| var hierarchyA = function() { | |
| return { | |
| name: "a", | |
| children: [ | |
| { | |
| name: "b", | |
| children: [ {name: "d"}, {name: "e"} ] | |
| }, | |
| { | |
| name: "c", | |
| children: [ | |
| {name: "f", children: [ {name:"t"}, {name:"u"} ] }, | |
| {name: "g"}, | |
| {name: "h"} | |
| ] | |
| }, | |
| { | |
| name: "k", | |
| children: [ | |
| {name: "j", children: [ | |
| {name:"x", children: [{name:"y"}]} | |
| ]} | |
| ] | |
| } | |
| ] | |
| }; | |
| }; | |
| var hierarchyB = function() { | |
| return { | |
| name: "a", | |
| children: [ | |
| { | |
| name: "b", | |
| children: [ {name: "d"}, {name: "e"} ] | |
| }, | |
| { | |
| name: "c", | |
| children: [ {name: "f"}, {name: "g"} ] | |
| }, | |
| { | |
| name: "k", | |
| children: [ {name: "j"} ] | |
| }, | |
| { | |
| name: "n", | |
| children: [ {name: "m"}, {name: "q"} ] | |
| } | |
| ] | |
| }; | |
| }; | |
| var hierarchy = hierarchyA(); | |
| var force = d3.layout.force() | |
| .size([ width, height ]) | |
| .charge(-100) | |
| .linkDistance(40) | |
| .on("tick", draw); | |
| var tree = d3.layout.tree() | |
| .size([ width, height ]); | |
| var newNodes = tree(hierarchy); | |
| var node = g.selectAll(".node"); | |
| var toggle = true; | |
| function update() { | |
| toggle = !toggle; | |
| hierarchy = (toggle) ? hierarchyB() : hierarchyA(); | |
| var oldNodes = node.data(); | |
| var newNodes = tree(hierarchy) | |
| .map(function(d) { | |
| d.treeX = d.x; d.treeY = d.y; | |
| var i = oldNodes.map(function(d) { return d.name; }).indexOf(d.name); | |
| if (i == -1) { | |
| d.x = width / 2 + Math.random(); | |
| d.y = height / 2 + Math.random(); | |
| return d; | |
| } | |
| d.x = oldNodes[i].x; | |
| d.y = oldNodes[i].y; | |
| return d; | |
| }); | |
| node = g.selectAll(".node").data(newNodes, function(d) { return d.name; }); | |
| node.enter().append("g").classed("node", true) | |
| .append("circle").attr({ r: 1 }) | |
| .style({ fill: "#999", stroke: "#444" }) | |
| .transition().duration(1000) | |
| .attr({ r: 10 }); | |
| node.exit().remove(); | |
| node.call(force.drag); | |
| var newLinks = tree.links(newNodes); | |
| link = g.selectAll(".link").data(newLinks); | |
| link.enter().insert("g", "g.node").classed("link", true) | |
| .append("line").style({ stroke: "#444" }); | |
| link.exit().remove(); | |
| force.nodes(node.data()).links(link.data()).start(); | |
| } | |
| update(); | |
| window.setInterval(update, 2000); | |
| var mix = 0; | |
| function draw(event) { | |
| node.each(function(d) { | |
| d.x += (d.treeX - d.x) * mix * event.alpha; | |
| d.y += (d.treeY - d.y) * mix * event.alpha; | |
| }); | |
| node.attr({ | |
| transform: function(d) { return "translate(" + d.x + "," + d.y + ")"; } | |
| }); | |
| link.select("line") | |
| .attr({ | |
| x1: function(d) { return d.source.x; }, | |
| x2: function(d) { return d.target.x; }, | |
| y1: function(d) { return d.source.y; }, | |
| y2: function(d) { return d.target.y; } | |
| }); | |
| } |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment