Files
OpenNest/OpenNest.Engine.Tests
ajandClaude Fable 5.1 d317a90f1e perf(engine): cut Auto Nest time on many-part jobs
A 67-drawing, 118-part job took about six minutes through the desktop
Auto Nest path and was cancelled before any layout appeared. Almost all
of it was the cutout pre-pass, the rest the Irregular engine.

Cutout pre-pass (317 s -> 8 s on that job, same bundles and poses):
- The lattice and NFP searches prepare the frame's and the occupants'
  validation outlines once per search (NestLayoutCheck.Prepare) instead
  of re-outlining and re-triangulating the frame at every candidate, and
  test candidates against the small occupants before the frame. Answers
  match the pairwise check exactly, including its leftmost-inflated rule.
- A hole's proposal is replayed for the same frame, hole and offered
  inserts: automatic-rotation inserts ask the same question at every
  frame angle.

Irregular engine (40 s -> 15 s, benchmark 42 s -> 19 s, same layouts):
- Concave no-fit polygons are built as the union of pairwise convex sums
  of each footprint's convex pieces (ear clipping plus Hertel-Mehlhorn
  merging on the Clipper lattice) instead of n*m edge-pair quads; a
  footprint that cannot be decomposed keeps the old sweep.
- Pair and block catalogs share one private drawing per part geometry,
  owned by the engine instance, so each part's best-fit search runs once
  per instance and across a pipeline's trial and ordinary solves.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
2026-10-18 21:13:15 -04:00
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