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Add OpenNest.Benchmark: generic head-to-head engine comparison harness

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Loads any .nest file (or folder of them) via NestReader and nests every
drawing with quantity > 0 using each registered NestEngineBase, so it
works sight-unseen against arbitrary real jobs without any hardcoded
geometry. Optionally sweeps a fixed --sheet-sizes list instead of each
file's own plate size.

- BenchmarkJob/JobLoader build immutable job specs; a fresh Plate and
  NestItem list is created per (job, engine) run so state never leaks
  between engines or jobs.
- NestValidator rejects a layout if any part falls outside the work
  area, any two parts are closer than PartSpacing (checked via each
  part's own world-space polygon inflated by the spacing, so it holds
  for arbitrary concave/holed geometry, not just bounding boxes), or a
  drawing gets more parts than requested.
- Scoring matches Plate.Utilization() (placed area / full sheet area);
  ties among fully-placed layouts break on the smaller used bounding
  box (more usable remnant).
- Report prints a per-job ranked breakdown plus a per-engine summary
  (wins, avg utilization, time), and can write a flat CSV.

Verified end-to-end against a synthetic .nest file (not committed)
against the four built-in engines; caught a genuine out-of-work-area
bug in StripNestEngine in the process.
This commit is contained in:
aj
2026-09-15 18:31:36 -04:00
parent 587000f68a
commit 6a0fba0fec
11 changed files with 839 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files
OpenNest.sln
+26 -12
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@@ -34,6 +34,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "OpenNest.Posts.GravographIS
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "OpenNest.Data", "OpenNest.Data\OpenNest.Data.csproj", "{A0B4B48E-1DF0-4DD3-B42C-B9B7779EA8B0}"
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "OpenNest.Benchmark", "OpenNest.Benchmark\OpenNest.Benchmark.csproj", "{ACD8F725-829A-48A8-AA59-61DD90DE06CA}"
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