initial commit, w/ simple force graph

2024-05-19 13:23:03 -04:00 · 2024-05-19 13:23:03 -04:00 · 3c02ecf295
parent 24dc18a22c
commit 3c02ecf295
4 changed files with 592 additions and 0 deletions
--- a/index.html
+++ b/index.html
@ -0,0 +1,8 @@
+<!DOCTYPE html>
+<html>
+  <head>
+    <title>D3 Network Diagram</title>
+    <script type="module" src="/plot.js"></script>
+  </head>
+  <body></body>
+</html>
--- a/package-lock.json
+++ b/package-lock.json
@ -0,0 +1,432 @@
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+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/safer-buffer/-/safer-buffer-2.1.2.tgz",
+      "integrity": "sha512-YZo3K82SD7Riyi0E1EQPojLz7kpepnSQI9IyPbHHg1XXXevb5dJI7tpyN2ADxGcQbHG7vcyRHk0cbwqcQriUtg=="
+    }
+  }
+}
--- a/package.json
+++ b/package.json
@ -0,0 +1,5 @@
+{
+  "dependencies": {
+    "d3": "^7.9.0"
+  }
+}
--- a/plot.js
+++ b/plot.js
@ -0,0 +1,147 @@
+import * as d3 from "https://cdn.jsdelivr.net/npm/d3@7/+esm"
+import {
+  forceSimulation,
+  forceLink,
+  forceCollide,
+} from "https://cdn.jsdelivr.net/npm/d3@7/+esm"
+
+const data = {
+  nodes: [
+    { id: "A", group: 1 },
+    { id: "B", group: 1 },
+    { id: "C", group: 1 },
+    { id: "D", group: 1 },
+    { id: "E", group: 1 },
+    { id: "F", group: 1 },
+    { id: "G", group: 1 },
+    { id: "H", group: 1 },
+    { id: "I", group: 1 },
+    { id: "J", group: 1 },
+    { id: "K", group: 1 },
+    { id: "L", group: 1 },
+    { id: "M", group: 1 },
+    { id: "N", group: 1 },
+    { id: "O", group: 1 },
+    { id: "P", group: 1 },
+    { id: "Q", group: 1 },
+    { id: "R", group: 1 },
+    { id: "S", group: 1 },
+    { id: "T", group: 1 },
+    { id: "U", group: 1 },
+    { id: "V", group: 1 },
+    { id: "W", group: 1 },
+    { id: "X", group: 1 },
+    { id: "Y", group: 1 },
+    { id: "Z", group: 1 },
+  ],
+  links: [
+    { source: "A", target: "B", value: 1 },
+    { source: "A", target: "C", value: 1 },
+    { source: "A", target: "D", value: 1 },
+    { source: "A", target: "E", value: 1 },
+    { source: "A", target: "F", value: 1 },
+    { source: "A", target: "G", value: 1 },
+    { source: "A", target: "H", value: 1 },
+    { source: "A", target: "I", value: 1 },
+    { source: "A", target: "J", value: 1 },
+    { source: "A", target: "K", value: 1 },
+    { source: "A", target: "L", value: 1 },
+    { source: "A", target: "M", value: 1 },
+    { source: "A", target: "N", value: 1 },
+    { source: "A", target: "O", value: 1 },
+    { source: "A", target: "P", value: 1 },
+    { source: "A", target: "Q", value: 1 },
+    { source: "A", target: "R", value: 1 },
+    { source: "A", target: "S", value: 1 },
+    { source: "A", target: "T", value: 1 },
+    { source: "A", target: "U", value: 1 },
+    { source: "A", target: "V", value: 1 },
+    { source: "A", target: "W", value: 1 },
+    { source: "A", target: "X", value: 1 },
+    { source: "A", target: "Y", value: 1 },
+    { source: "A", target: "Z", value: 1 },
+  ],
+}
+
+const width = window.innerWidth
+const height = window.innerHeight
+
+const svg = d3
+  .select("body")
+  .append("svg")
+  .attr("width", width)
+  .attr("height", height)
+
+const simulation = forceSimulation(data.nodes)
+  .force(
+    "link",
+    forceLink(data.links).id((d) => d.id)
+  )
+  .force("collide", forceCollide(30))
+
+const link = svg
+  .selectAll("line")
+  .data(data.links)
+  .enter()
+  .append("line")
+  .attr("stroke", "black")
+  .attr("stroke-width", 1)
+
+const node = svg
+  .selectAll("circle")
+  .data(data.nodes)
+  .enter()
+  .append("circle")
+  .attr("r", 10)
+  .attr("fill", "red")
+  .call(
+    d3.drag().on("start", dragStarted).on("drag", dragged).on("end", dragEnded)
+  )
+
+node.append("title").text((d) => d.id)
+
+const text = svg
+  .selectAll("text")
+  .data(data.nodes)
+  .enter()
+  .append("text")
+  .attr("x", (d) => d.x)
+  .attr("y", (d) => d.y + 20)
+  .text((d) => d.id)
+  .attr("text-anchor", "middle")
+  .attr("fill", "black")
+
+simulation.on("tick", () => {
+  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)
+
+  node.attr("cx", (d) => d.x).attr("cy", (d) => d.y)
+  text.attr("x", (d) => d.x).attr("y", (d) => d.y + 20)
+})
+
+node.on("click", function (event, d) {
+  d.fx = null
+  d.fy = null
+})
+
+function dragStarted(event, d) {
+  if (!event.active) simulation.alphaTarget(0.3).restart()
+  d.fx = d.x
+  d.fy = d.y
+}
+
+function dragged(event, d) {
+  d.fx = event.x
+  d.fy = event.y
+}
+
+function dragEnded(event, d) {
+  if (!event.active) simulation.alphaTarget(0)
+  if (!d3.event.active) {
+    d.fx = d.x
+    d.fy = d.y
+  }
+}