Force Dragging I and Curved Links using d3.v4
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June 1, 2016 12:19
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Force Dragging Curved Links d3.v4
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license: gpl-3.0 | |
height: 600 |
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<!DOCTYPE html> | |
<meta charset="utf-8"> | |
<style> | |
.links path { | |
stroke: #aaa; | |
fill: none; | |
} | |
.nodes circle { | |
pointer-events: all; | |
stroke: none; | |
stroke-width: 40px; | |
} | |
</style> | |
<svg width="960" height="600"></svg> | |
<script src="https://d3js.org/d3.v4.0.0-alpha.40.min.js"></script> | |
<script> | |
var svg = d3.select("svg"), | |
width = +svg.attr("width"), | |
height = +svg.attr("height"); | |
var simulation = d3.forceSimulation() | |
.force("link", d3.forceLink()) | |
.force("charge", d3.forceManyBody().distanceMax(100)) | |
.force("center", d3.forceCenter(width / 2, height / 2)); | |
d3.json("miserables.json", function(error, graph) { | |
if (error) throw error; | |
var nodes = graph.nodes.slice(), | |
links = [], | |
bilinks = []; | |
graph.links.forEach(function(link) { | |
var s = nodes[link.source], | |
t = nodes[link.target], | |
i = {}; // intermediate node | |
nodes.push(i); | |
links.push({source: s, target: i}, {source: i, target: t}); | |
bilinks.push([s, i, t]); | |
}); | |
simulation | |
.nodes(nodes) | |
.on("tick", ticked); | |
simulation | |
.force("link") | |
.links(links); | |
var link = svg.append("g").attr("class", "links") | |
.selectAll(".link") | |
.data(bilinks) | |
.enter().append("path"); | |
var node = svg.append("g") | |
.attr("class", "nodes") | |
.selectAll("circle") | |
.data(graph.nodes) | |
.enter().append("circle") | |
.attr("r", 2.5) | |
.call(d3.drag() | |
.on("start", dragstarted) | |
.on("drag", dragged) | |
.on("end", dragended)); | |
function ticked() { | |
link.attr("d", function(d) { | |
return "M" + d[0].x + "," + d[0].y | |
+ "S" + d[1].x + "," + d[1].y | |
+ " " + d[2].x + "," + d[2].y; | |
}); | |
node | |
.attr("cx", function(d) { return d.x; }) | |
.attr("cy", function(d) { return d.y; }); | |
} | |
}); | |
function dragstarted(d) { | |
if (!d3.event.active) { | |
simulation.alphaTarget(0.3).restart() | |
} | |
simulation.fix(d); | |
} | |
function dragged(d) { | |
simulation.fix(d, d3.event.x, d3.event.y); | |
} | |
function dragended(d) { | |
if (!d3.event.active) { | |
simulation.alphaTarget(0); | |
} | |
simulation.unfix(d); | |
} | |
</script> |
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{ | |
"nodes":[ | |
{"name":"Myriel"}, | |
{"name":"Napoleon"}, | |
{"name":"Mlle.Baptistine"}, | |
{"name":"Mme.Magloire"}, | |
{"name":"CountessdeLo"}, | |
{"name":"Geborand"}, | |
{"name":"Champtercier"}, | |
{"name":"Cravatte"}, | |
{"name":"Count"}, | |
{"name":"OldMan"}, | |
{"name":"Labarre"}, | |
{"name":"Valjean"}, | |
{"name":"Marguerite"}, | |
{"name":"Mme.deR"}, | |
{"name":"Isabeau"}, | |
{"name":"Gervais"}, | |
{"name":"Tholomyes"}, | |
{"name":"Listolier"}, | |
{"name":"Fameuil"}, | |
{"name":"Blacheville"}, | |
{"name":"Favourite"}, | |
{"name":"Dahlia"}, | |
{"name":"Zephine"}, | |
{"name":"Fantine"}, | |
{"name":"Mme.Thenardier"}, | |
{"name":"Thenardier"}, | |
{"name":"Cosette"}, | |
{"name":"Javert"}, | |
{"name":"Fauchelevent"}, | |
{"name":"Bamatabois"}, | |
{"name":"Perpetue"}, | |
{"name":"Simplice"}, | |
{"name":"Scaufflaire"}, | |
{"name":"Woman1"}, | |
{"name":"Judge"}, | |
{"name":"Champmathieu"}, | |
{"name":"Brevet"}, | |
{"name":"Chenildieu"}, | |
{"name":"Cochepaille"}, | |
{"name":"Pontmercy"}, | |
{"name":"Boulatruelle"}, | |
{"name":"Eponine"}, | |
{"name":"Anzelma"}, | |
{"name":"Woman2"}, | |
{"name":"MotherInnocent"}, | |
{"name":"Gribier"}, | |
{"name":"Jondrette"}, | |
{"name":"Mme.Burgon"}, | |
{"name":"Gavroche"}, | |
{"name":"Gillenormand"}, | |
{"name":"Magnon"}, | |
{"name":"Mlle.Gillenormand"}, | |
{"name":"Mme.Pontmercy"}, | |
{"name":"Mlle.Vaubois"}, | |
{"name":"Lt.Gillenormand"}, | |
{"name":"Marius"}, | |
{"name":"BaronessT"}, | |
{"name":"Mabeuf"}, | |
{"name":"Enjolras"}, | |
{"name":"Combeferre"}, | |
{"name":"Prouvaire"}, | |
{"name":"Feuilly"}, | |
{"name":"Courfeyrac"}, | |
{"name":"Bahorel"}, | |
{"name":"Bossuet"}, | |
{"name":"Joly"}, | |
{"name":"Grantaire"}, | |
{"name":"MotherPlutarch"}, | |
{"name":"Gueulemer"}, | |
{"name":"Babet"}, | |
{"name":"Claquesous"}, | |
{"name":"Montparnasse"}, | |
{"name":"Toussaint"}, | |
{"name":"Child1"}, | |
{"name":"Child2"}, | |
{"name":"Brujon"}, | |
{"name":"Mme.Hucheloup"} | |
], | |
"links":[ | |
{"source":1,"target":0}, | |
{"source":2,"target":0}, | |
{"source":3,"target":0}, | |
{"source":3,"target":2}, | |
{"source":4,"target":0}, | |
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] | |
} |
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