Engine unification: d3-force replaces forceAtlas2 everywhere

sorokin.oleg.edu/learnharness

One engine owns the equilibrium: the merge settle and (next commit)
the live drag both run createGraphSimulation — d3-force link springs,
1/d charge, weak centroid gravity — so a drag's rest state IS the
server's rest state. The FA2-era anchor mechanism survives as a
post-tick POSITION-SPACE re-blend (retention 0.85): d3's forceLink is
a Hooke spring (strength*(d-L)*alpha), which overpowers any force-space
anchor at long range — the re-blend is alpha-independent and always
wins as the sim anneals (the 675-unit drift bug). Gravity retuned for
d3's 1/d many-body falloff (bootstrap 0.2 / incremental 0.12: cluster
spacing lands ~400 world units, the FA2-era density). Rim orphans seed
(and anchor) at 1.7x the CONNECTED core's mean radius — a max-span-based
rim fed back on itself and ran the layout away to 6000 units. Replay:
338 positions in 1.6s, old-node shift within a batch 4.8 (FA2: 23).

This commit is contained in:

amosblomqvist

2026-09-13 09:17:01 +03:00

parent 0c14ea425d

commit 7eceb58303

5 changed files with 186 additions and 73 deletions

									
										package.json
									
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				@@ -29,6 +29,7 @@

						"class-variance-authority": "^0.7.1",

						"clsx": "^2.1.1",

						"cmdk": "^1.1.1",

						"d3-force": "^3.0.0",

						"d3-selection": "^3.0.0",

						"d3-zoom": "^3.0.0",

						"embla-carousel-react": "^8.6.0",