worldgraph/visualizer.html at main · resolveworks/worldgraph · GitHub

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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Worldgraph Visualizer</title>
<style>
  * { margin: 0; padding: 0; box-sizing: border-box; }
  body { background: #fff; font-family: monospace; overflow: hidden; }
  #drop-zone {
    position: absolute; inset: 0;
    display: flex; align-items: center; justify-content: center;
    border: 2px dashed #ccc; margin: 40px;
    color: #999; font-size: 14px;
  }
  #drop-zone.hover { border-color: #000; color: #000; }
  svg { position: absolute; inset: 0; }
  .edge-label {
    font-size: 9px; fill: #888;
    pointer-events: none; user-select: none;
  }
  .node-label {
    font-size: 11px; fill: #000;
    pointer-events: none; user-select: none;
  }
  #legend {
    position: absolute; top: 12px; left: 12px;
    font-size: 11px; color: #666; line-height: 1.6;
  }
  #legend span { display: inline-block; width: 10px; height: 10px; border-radius: 50%; margin-right: 4px; vertical-align: middle; }
  #stats {
    position: absolute; top: 12px; right: 12px;
    font-size: 11px; color: #666; text-align: right; line-height: 1.6;
  }
</style>
</head>
<body>
<div id="drop-zone">Drop graph JSON file(s) here</div>
<div id="legend" style="display:none">
  <div><span style="background:#000"></span> entity</div>
  <div><span style="background:#e33"></span> merged entity</div>
</div>
<div id="stats" style="display:none"></div>
<svg id="graph"></svg>
<script src="https://d3js.org/d3.v7.min.js"></script>
<script>
const dropZone = document.getElementById('drop-zone');

dropZone.addEventListener('dragover', e => { e.preventDefault(); dropZone.classList.add('hover'); });
dropZone.addEventListener('dragleave', () => dropZone.classList.remove('hover'));
dropZone.addEventListener('drop', e => {
  e.preventDefault();
  dropZone.classList.remove('hover');
  const files = [...e.dataTransfer.files].filter(f => f.name.endsWith('.json'));
  if (!files.length) return;
  const parsed = [];
  let done = 0;
  files.forEach(file => {
    const reader = new FileReader();
    reader.onload = ev => {
      try { parsed.push(JSON.parse(ev.target.result)); }
      catch (err) { alert('Invalid JSON in ' + file.name + ': ' + err.message); }
      if (++done === files.length && parsed.length) {
        const merged = { nodes: [], edges: [], matches: [] };
        parsed.forEach(data => {
          merged.nodes.push(...(data.nodes || []));
          merged.edges.push(...(data.edges || []));
          merged.matches.push(...(data.matches || []));
        });
        dropZone.style.display = 'none';
        render(merged);
      }
    };
    reader.readAsText(file);
  });
});

function render(data) {
  const { nodes: rawNodes, edges: rawEdges, matches } = data;

  // Build lookup: id -> node
  const nodeMap = new Map();
  rawNodes.forEach(n => nodeMap.set(n.id, n));

  // Collect "is named" labels per entity node, track label node ids
  const labelNodeIds = new Set();
  const namesByEntity = new Map(); // entity id -> [name strings]
  rawEdges.forEach(e => {
    if (e.relation === 'is named') {
      const target = nodeMap.get(e.target);
      if (target && target.label) {
        labelNodeIds.add(e.target);
        if (!namesByEntity.has(e.source)) namesByEntity.set(e.source, []);
        namesByEntity.get(e.source).push(target.label);
      }
    }
  });

  // Build match clusters: map each id to its canonical (first in cluster)
  const idToCanonical = new Map();
  const canonicalMembers = new Map(); // canonical -> [all member ids]
  matches.forEach(cluster => {
    const canon = cluster[0];
    canonicalMembers.set(canon, cluster);
    cluster.forEach(id => idToCanonical.set(id, canon));
  });

  // Resolve an id to its canonical (or itself if unmatched)
  const resolve = id => idToCanonical.has(id) ? idToCanonical.get(id) : id;

  // Build merged nodes: one per canonical entity
  const seenCanonical = new Set();
  const mergedNodes = [];
  rawNodes.forEach(n => {
    if (labelNodeIds.has(n.id)) return; // skip label nodes
    const canon = resolve(n.id);
    if (seenCanonical.has(canon)) return;
    seenCanonical.add(canon);

    // Collect all name variants from all members of this cluster
    const members = canonicalMembers.get(canon) || [n.id];
    const allNames = [];
    members.forEach(mid => {
      const names = namesByEntity.get(mid) || [];
      names.forEach(name => { if (!allNames.includes(name)) allNames.push(name); });
    });

    const isMerged = members.length > 1;
    mergedNodes.push({
      id: canon,
      label: allNames[0] || canon.slice(0, 8),
      names: allNames,
      merged: isMerged,
    });
  });

  const mergedIdSet = new Set(mergedNodes.map(n => n.id));

  // Structural edges: remap to canonical ids, skip "is named", deduplicate
  const edgeSet = new Set();
  const structEdges = [];
  rawEdges.forEach(e => {
    if (e.relation === 'is named') return;
    const s = resolve(e.source);
    const t = resolve(e.target);
    if (s === t) return; // self-loop after merge
    if (!mergedIdSet.has(s) || !mergedIdSet.has(t)) return;
    const key = `${s}->${t}:${e.relation}`;
    if (edgeSet.has(key)) return;
    edgeSet.add(key);
    structEdges.push({ source: s, target: t, relation: e.relation });
  });

  // Assign curve offsets for parallel edges between the same node pair
  const pairCounts = new Map();
  structEdges.forEach(e => {
    const key = [e.source, e.target].sort().join('|');
    const i = pairCounts.get(key) || 0;
    pairCounts.set(key, i + 1);
    e.pairIndex = i;
    e.pairKey = key;
  });
  structEdges.forEach(e => {
    const total = pairCounts.get(e.pairKey);
    e.curve = total === 1 ? 0 : (e.pairIndex - (total - 1) / 2) * 40;
  });

  // Stats
  const mergedCount = mergedNodes.filter(n => n.merged).length;
  document.getElementById('stats').style.display = 'block';
  document.getElementById('stats').innerHTML =
    `${mergedNodes.length} entities<br>${structEdges.length} edges<br>${mergedCount} merged`;
  document.getElementById('legend').style.display = 'block';

  // D3 force simulation
  const width = window.innerWidth;
  const height = window.innerHeight;

  const svg = d3.select('#graph')
    .attr('width', width)
    .attr('height', height);

  const g = svg.append('g');

  // Zoom
  svg.call(d3.zoom().on('zoom', e => g.attr('transform', e.transform)));

  const simulation = d3.forceSimulation(mergedNodes)
    .force('link', d3.forceLink(structEdges).id(d => d.id).distance(200))
    .force('charge', d3.forceManyBody().strength(-150))
    .force('center', d3.forceCenter(width / 2, height / 2))
    .force('collision', d3.forceCollide(25));

  // Draw edges (paths for curved parallel edges)
  const link = g.append('g')
    .selectAll('path')
    .data(structEdges)
    .join('path')
    .attr('stroke', '#ccc')
    .attr('stroke-width', 1)
    .attr('fill', 'none');

  // Edge labels
  const edgeLabel = g.append('g')
    .selectAll('text')
    .data(structEdges)
    .join('text')
    .attr('class', 'edge-label')
    .text(d => d.relation);

  // Draw nodes
  const node = g.append('g')
    .selectAll('circle')
    .data(mergedNodes)
    .join('circle')
    .attr('r', d => d.merged ? 5 : 3)
    .attr('fill', d => d.merged ? '#e33' : '#000')
    .attr('stroke', '#fff')
    .attr('stroke-width', 0.5)
    .call(d3.drag()
      .on('start', (e, d) => { if (!e.active) simulation.alphaTarget(0.3).restart(); d.fx = d.x; d.fy = d.y; })
      .on('drag', (e, d) => { d.fx = e.x; d.fy = e.y; })
      .on('end', (e, d) => { if (!e.active) simulation.alphaTarget(0); d.fx = null; d.fy = null; })
    );

  // Node labels: all name variants stacked equally
  const nodeLabel = g.append('g')
    .selectAll('g')
    .data(mergedNodes)
    .join('g')
    .each(function(d) {
      const el = d3.select(this);
      const names = d.names.length ? d.names : [d.label];
      names.forEach((name, i) => {
        el.append('text')
          .attr('class', 'node-label')
          .attr('dx', 8)
          .attr('dy', 3 + i * 13)
          .text(name);
      });
    });

  // Compute control point for a curved edge
  // Use consistent direction (lower id → higher id) so parallel edges
  // between the same pair always offset to the same side.
  function controlPoint(d) {
    const flip = d.source.id > d.target.id;
    const dx = flip ? d.source.x - d.target.x : d.target.x - d.source.x;
    const dy = flip ? d.source.y - d.target.y : d.target.y - d.source.y;
    const len = Math.sqrt(dx * dx + dy * dy) || 1;
    const nx = -dy / len * d.curve;
    const ny = dx / len * d.curve;
    return { x: (d.source.x + d.target.x) / 2 + nx, y: (d.source.y + d.target.y) / 2 + ny };
  }

  simulation.on('tick', () => {
    link.attr('d', d => {
      if (d.curve === 0) return `M${d.source.x},${d.source.y}L${d.target.x},${d.target.y}`;
      const cp = controlPoint(d);
      return `M${d.source.x},${d.source.y}Q${cp.x},${cp.y} ${d.target.x},${d.target.y}`;
    });
    edgeLabel
      .attr('x', d => { const cp = controlPoint(d); return (d.source.x + 2 * cp.x + d.target.x) / 4; })
      .attr('y', d => { const cp = controlPoint(d); return (d.source.y + 2 * cp.y + d.target.y) / 4; });
    node.attr('cx', d => d.x).attr('cy', d => d.y);
    nodeLabel.attr('transform', d => `translate(${d.x},${d.y})`);
  });
}
</script>
</body>
</html>