/
index.js
93 lines (76 loc) · 2.43 KB
/
index.js
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(async() => {
let response = await fetch(`${window.origin}/get-graph`, {
method: "POST",
credentials: "include",
body: JSON.stringify("Get data"),
cache: "no-cache",
headers: new Headers({
"content-type": "application/json"
})
});
var svg = d3.select("svg"),
width = +svg.attr("width"),
height = +svg.attr("height");
var simulation = d3.forceSimulation()
.force("link", d3.forceLink().id(function(d) { return d.id; }))
.force("charge", d3.forceManyBody())
.force("center", d3.forceCenter(width / 2, height / 2));
let responseString = await response.json();
let responseJSON = JSON.parse(responseString);
var g = svg.append("g")
.attr("class", "everything");
var link = g.append("g")
.attr("class", "links")
.selectAll("line")
.data(responseJSON.links)
.enter().append("line");
var node = g.append("g")
.attr("class", "nodes")
.selectAll("circle")
.data(responseJSON.nodes)
.enter().append("circle")
.attr("r", 5.0)
.attr("fill", "darkgray")
.call(d3.drag()
.on("start", dragstarted)
.on("drag", dragged)
.on("end", dragended));
node.append("title")
.text(function(d) { return d.name; });
simulation
.nodes(responseJSON.nodes)
.on("tick", ticked);
simulation
.force("link")
.links(responseJSON.links);
var zoom_handler = d3.zoom()
.on("zoom", zoom_actions);
zoom_handler(svg);
function zoom_actions() {
g.attr("transform", d3.event.transform)
}
function ticked() {
link
.attr("x1", function(d) { return d.source.x; })
.attr("y1", function(d) { return d.source.y; })
.attr("x2", function(d) { return d.target.x; })
.attr("y2", function(d) { return d.target.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();
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;
}
})();