Archived
aj
13478f5102
Nests every part as the axis-aligned box of its material at its minimum-area rotation and packs boxes with a maximal-rectangles free list (6 placement rules x global/ordered pick). Sheet choice uses the salvage-credited look-ahead cost. Curved extremes read the way the layout check sees them (circumscribed arcs on the Clipper grid), so discs, rings and obrounds stay valid at box contact; an 80-job sweep failed 16-50 jobs before that rule. Local 2026 production lanes (--min-salvage-dimension 12, --parallel 3): - 91 all-rectangular jobs: 91/91 valid, cost 333081 vs best general 332153 (Gpt6Astra, 89/91 valid), 5.9 s vs 13.7 s (Opus55) and 169.5 s (Gpt6Astra) - 77 box-filling (>= 90%) jobs: 77/77 valid, lowest total cost 641637
65 lines
2.7 KiB
Markdown
65 lines
2.7 KiB
Markdown
# OpenNest Engines
|
|
|
|
Independent nesting engine plugins for [OpenNest](https://git.thecozycat.net/aj/OpenNest).
|
|
Each engine is a standalone class library that OpenNest discovers at runtime via
|
|
`NestingEngineRegistry.LoadPlugins()` — drop the DLL into an `Engines/` folder next to
|
|
the OpenNest app or `OpenNest.Benchmark` build output.
|
|
|
|
| Engine | Approach |
|
|
|--------|----------|
|
|
| [Gpt6Astra](OpenNest.Engine.Gpt6Astra/) | Contact-based placement |
|
|
| [Opus55](OpenNest.Engine.Opus55/) | Frontier-advance no-fit-polygon packing |
|
|
| [Qwen38FlashNext](OpenNest.Engine.Qwen38FlashNext/) | Bottom-left greedy insertion over convex NFPs with an exact clearance gate |
|
|
| [Rectangles](OpenNest.Engine.Rectangles/) | Rectangle lane: maximal-rectangles box packing for plain and near-rectangular parts |
|
|
|
|
## Building
|
|
|
|
Engines compile against an OpenNest checkout, expected as a sibling clone:
|
|
|
|
```
|
|
src/
|
|
OpenNest/ git clone https://git.thecozycat.net/aj/OpenNest.git
|
|
OpenNest-Engines/ this repo
|
|
```
|
|
|
|
Use a different location with `/p:OpenNestRoot=<path>` (or the `OpenNestRoot`
|
|
environment variable).
|
|
|
|
```powershell
|
|
./Build-Engines.ps1 # build all engines + deploy to the benchmark
|
|
./Build-Engines.ps1 -Engines Opus55 # just one
|
|
dotnet test OpenNest.Engine.Opus55/tests/OpenNest.Engine.Opus55.Tests.csproj
|
|
```
|
|
|
|
Each engine's README covers its algorithm and benchmark results.
|
|
|
|
`Engine.Testing/` contains shared xUnit contract tests, shapes, job builders and layout
|
|
assertions backed by `NestLayoutCheck`. It is a test dependency, not a plugin;
|
|
`Build-Engines.ps1` only deploys projects in `OpenNest.Engine.*` directories. All engines
|
|
require the shared-services APIs in the sibling host checkout. See
|
|
[the PR 5 migration report](MIGRATION-PR5.md) for validation and benchmark results.
|
|
|
|
## Writing a new engine
|
|
|
|
```powershell
|
|
./New-Engine.ps1 -Name Nova
|
|
```
|
|
|
|
This copies `_Template/` to `OpenNest.Engine.Nova/`: an `INestingEngine` stub, a README
|
|
spelling out what counts as an independent engine, `BENCH-RULES.md` (how a model's run
|
|
works: workspace limits, git, the real-part archive, reporting), and starter acceptance tests checked by
|
|
the shared `NestLayoutCheck` (they fail until `Solve()` is implemented).
|
|
|
|
To work inside an OpenNest checkout instead, stamp it into an `Engines/` folder there and
|
|
bring the shared build files and test kit along; they detect that layout automatically:
|
|
|
|
```powershell
|
|
./New-Engine.ps1 -Name Nova -Destination <OpenNest>/Engines -IncludeBuildFiles
|
|
```
|
|
|
|
## Layout
|
|
|
|
Each engine lives in `OpenNest.Engine.<Name>/` with an optional `tests/` subproject.
|
|
`Directory.Build.props` supplies the target framework and the `OpenNest.Engine`
|
|
reference, so an engine's `.csproj` can be nearly empty.
|