simple3 = {
const width = 1500;
const height = 1000;
const root = d3.hierarchy(output);
const links = root.links();
const nodes = root.descendants();
const simulation = d3.forceSimulation(nodes)
.force("link", d3.forceLink(links).id(d => d.id).distance(100).strength(1))
.force("charge", d3.forceManyBody().strength(-400))
.force("x", d3.forceX())
.force("y", d3.forceY());
const svg = d3.create("svg")
.attr("width", width)
.attr("height", height)
.attr("viewBox", [-width / 2, -height / 2, width, height])
.attr("style", "max-width: 100%; height: auto;");
const link = svg.append("g")
.attr("stroke", "#00f")
.attr("stroke-opacity", 0.6)
.selectAll("line")
.data(links)
.join("line");
const linkForce = d3.forceLink(links)
.id(d => d.id)
.distance(1000)
.strength(1);
const colorScale = d3.scaleOrdinal(d3.schemeCategory10);
const node = svg.append("g")
.selectAll("g")
.data(nodes)
.join("g")
.attr("transform", d => `translate(${d.x},${d.depth * 100})`)
.call(drag(simulation));
const circleRadius = 20;
node.append("circle")
.attr("r", circleRadius)
.attr("fill", "white")
.attr("stroke", d => colorScale(d.depth))
.attr("stroke-width", 3);
const size_offset = 1.2;
const offset = size_offset / 2;
node.append("image")
.attr("x", -(circleRadius * offset))
.attr("y", -(circleRadius * offset))
.attr("width", circleRadius * size_offset)
.attr("height", circleRadius * size_offset)
.attr("href",d => d.data.image_url);
nodes.forEach(node => {
node.y = 0;
});
simulation.on("tick", () => {
node.attr("transform", d => `translate(${d.x},${d.y})`);
link
.attr("x1", d => d.source.x)
.attr("y1", d => d.source.y)
.attr("x2", d => d.target.x)
.attr("y2", d => d.target.y);
});
invalidation.then(() => simulation.stop());
return svg.node();
}