Force-directed graph · minimax-m3.1-flash

Let's write index.html with d3.min.js script tag and inline everything.

Design: SVG, forceSimulation with forceLink, forceManyBody, forceCenter, forceCollide. Cluster rings: within cluster i, nodes 10i..10i+9 in a ring. Plus ring of nodes 0,10,20,30.

Labels with IDs.

Drag node: standard d3.drag with subject. Pan background: drag on svg not on node. Zoom: d3.zoom on svg.

Hover: highlight node + neighbors + links.

Reset view: zoom.transform identity (transition).

Let me write it.

Initial positions: place nodes in clusters ring to keep initial graph in view? Simulation will handle. Use forceCenter at center.

Camera: zoom on svg, so g element transformed.

For "keep initial graph within view", after simulation ticks settle, could do initial fit. Let's place initial positions in a circle around center to keep it within view, then reset view = zoom identity.

Implement fit-to-view on reset? "restore the initial camera framing" — identity transform. Keep initial positions within view by initializing positions on 4 cluster rings and forceCenter at center. I'll just use identity for reset.

Write code.

Issue: mouseenter/mouseleave on nodeSel g with drag — during drag mouseleave fires fine.

Also drag on node conflicts with zoom: d3.drag on node stops propagation by default (yes, drag prevents default and stops propagation on mousedown). Good.

Let's test in browser.

Graph renders. It's slightly off-center (extends below). Let me test interactions: drag node, pan, zoom, reset.

But note the graph extends past bottom (node 15 at y~756). The force center at cx,cy of 1200x800 but the SVG is 1200x800 viewport in browser — fine but graph drifts. Let me wait for settling and screenshot again. Also cluster layout appears rotated/labelled oddly (cluster A at right). Fine.

Concern: "keep the initial graph within view" — it should fit. Let me check aftersettling.

The graph expands too much and drifts out of view. Charge too strong. Reduce charge strength and link distance; also stronger centering so it stays in view. Also the graph should be centered; forceCenter works but charge -220 with 40 nodes spreads wide.

Better: reduce charge to -90, link distance 45, collide 20, and add stronger forceX/forceY toward center (0.06). Also add bounds clamping in tick to keep in view (clamp x,y to [40, W-40]). That guarantees "initial graph within view".

Let's set charge -120, collide 22, center, and clamp in tick: x in [30, W-30], y in [40, H-40].

Also, camera framing: initial camera transform identity means viewport coords = screen coords. Since W=1200,H=800 matches viewport, good.

Let me tune and re-check.

Good, everything within view. Clusters look like rings (a bit compressed but fine). Let it settle more then test interactions.

Test hover node 0 at (667,357).

No hover highlight visible (screenshot after click maybe hover not persisted). Let's verify hover via script evaluation instead. Actually the browser tool has no eval action. I can test by dispatching mouseenter events? The tool only has click/drag/scroll etc.

Hmm, hover: the tool "click" moves mouse there presumably then screenshot — but the screenshot shows no dimming. Maybe mouseenter didn't fire because click moved mouse without enter event? Let's take screenshot after another click at same location or use motion? Let's try drag a small motion over node then screenshot.

Actually the click likely dispatched mousedown/up at that position without a prior mousemove, so mouseenter didn't fire. Try dragging from empty area to the node (drag triggers mousemove over nodes).

Let me test hover by dragging from background to node 0 position.

Still no hover effect visible. Maybe hover isn't firing in this harness, or the mouseenter handler conflicts with drag? d3.drag on nodeSel might suppress mouseenter? No. But d3.drag calls stopImmediatePropagation on mousedown only.

Possibly the screenshot is taken after the mouse moves away, or the browser tool's screenshot doesn't capture hover states. To verify hover logic programmatically, I can add a check via node --run? No browser eval tool. But I can test in the page by adding a temporary debug? Better: use playwright directly via node script to test hover (dispatch mouse move and check classes).

Let's write a quick playwright script.

Hover works: node 0 hot, 35 dim (40 - 5 in cluster A + node 10 & 20? neighbours of 0: 1,9 (ring), 10, 30 (cluster ring) → 5 nodes near total incl 0 = 5; dim 35 ✓). hotlinks: links of 0: 0-1, 9-0, 0-10, 0-30 = 4 ✓.

Now test drag, pan, zoom, resetvia playwright.

All working: drag moves node, links follow (x1 updated), camera transform unchanged during drag; pan and zoom work; reset restores identity and keeps 40 nodes/44 links.

Links count: 40 ring links + 4 = 44 ✓.

One issue: the viewport transform attribute is null initially (no transform attr). Fine.

Also "Reset view restore initial camera framing" — identity. Good.

Minor: after drag the node settles partially back; ok.

Let me view the final screenshot and confirm visuals good.

Everything looks good. One thing: the cluster-ring link 0-10-20-30 shows as long links across clusters — visible (0-10, 10-20, 20-30, 30-0). Good.

Minor improvement: clusters' internal rings look like rings. Good.

I could also add "Reset view" restoring framing; done. Final file exists.

Clean up shot.png? Leave it; harmless but remove to keep dirclean.