From 495ee6f0c39e81b0b5d5e654088ad902b9cf987b Mon Sep 17 00:00:00 2001
From: AJ Isaacs <ajisaacs27@gmail.com>
Date: Wed, 18 Mar 2026 16:46:17 -0400
Subject: [PATCH] refactor(engine): move NFP code to OpenNest.Engine.Nfp
 namespace

Move AutoNester, BottomLeftFill, NfpCache, SimulatedAnnealing,
and INestOptimizer/NestResult to OpenNest.Engine.Nfp. These are
not yet integrated into the engine registry.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
---
 OpenNest.Engine/Nfp/AutoNester.cs         | 9 ++++-----
 OpenNest.Engine/Nfp/BottomLeftFill.cs     | 4 ++--
 OpenNest.Engine/Nfp/INestOptimizer.cs     | 5 +++--
 OpenNest.Engine/Nfp/NfpCache.cs           | 4 ++--
 OpenNest.Engine/Nfp/SimulatedAnnealing.cs | 5 +++--
 5 files changed, 14 insertions(+), 13 deletions(-)

diff --git a/OpenNest.Engine/Nfp/AutoNester.cs b/OpenNest.Engine/Nfp/AutoNester.cs
index 0140544..55d1d38 100644
--- a/OpenNest.Engine/Nfp/AutoNester.cs
+++ b/OpenNest.Engine/Nfp/AutoNester.cs
@@ -1,13 +1,12 @@
-using System;
+using OpenNest.Converters;
+using OpenNest.Geometry;
+using OpenNest.Math;
 using System.Collections.Generic;
 using System.Diagnostics;
 using System.Linq;
 using System.Threading;
-using OpenNest.Converters;
-using OpenNest.Geometry;
-using OpenNest.Math;
 
-namespace OpenNest
+namespace OpenNest.Engine.Nfp
 {
     /// <summary>
     /// Mixed-part geometry-aware nesting using NFP-based collision avoidance
diff --git a/OpenNest.Engine/Nfp/BottomLeftFill.cs b/OpenNest.Engine/Nfp/BottomLeftFill.cs
index 192560b..48ecd1a 100644
--- a/OpenNest.Engine/Nfp/BottomLeftFill.cs
+++ b/OpenNest.Engine/Nfp/BottomLeftFill.cs
@@ -1,7 +1,7 @@
-using System.Collections.Generic;
 using OpenNest.Geometry;
+using System.Collections.Generic;
 
-namespace OpenNest
+namespace OpenNest.Engine.Nfp
 {
     /// <summary>
     /// NFP-based Bottom-Left Fill (BLF) placement engine.
diff --git a/OpenNest.Engine/Nfp/INestOptimizer.cs b/OpenNest.Engine/Nfp/INestOptimizer.cs
index 42dce81..05562d5 100644
--- a/OpenNest.Engine/Nfp/INestOptimizer.cs
+++ b/OpenNest.Engine/Nfp/INestOptimizer.cs
@@ -1,8 +1,9 @@
+using OpenNest.Engine.Fill;
+using OpenNest.Geometry;
 using System.Collections.Generic;
 using System.Threading;
-using OpenNest.Geometry;
 
-namespace OpenNest
+namespace OpenNest.Engine.Nfp
 {
     /// <summary>
     /// Result of a nest optimization run.
diff --git a/OpenNest.Engine/Nfp/NfpCache.cs b/OpenNest.Engine/Nfp/NfpCache.cs
index bfcabeb..90076b2 100644
--- a/OpenNest.Engine/Nfp/NfpCache.cs
+++ b/OpenNest.Engine/Nfp/NfpCache.cs
@@ -1,8 +1,8 @@
+using OpenNest.Geometry;
 using System;
 using System.Collections.Generic;
-using OpenNest.Geometry;
 
-namespace OpenNest
+namespace OpenNest.Engine.Nfp
 {
     /// <summary>
     /// Caches computed No-Fit Polygons keyed by (DrawingA.Id, RotationA, DrawingB.Id, RotationB).
diff --git a/OpenNest.Engine/Nfp/SimulatedAnnealing.cs b/OpenNest.Engine/Nfp/SimulatedAnnealing.cs
index d2dc4b9..c6d43a0 100644
--- a/OpenNest.Engine/Nfp/SimulatedAnnealing.cs
+++ b/OpenNest.Engine/Nfp/SimulatedAnnealing.cs
@@ -1,11 +1,12 @@
+using OpenNest.Engine.Fill;
+using OpenNest.Geometry;
 using System;
 using System.Collections.Generic;
 using System.Diagnostics;
 using System.Linq;
 using System.Threading;
-using OpenNest.Geometry;
 
-namespace OpenNest
+namespace OpenNest.Engine.Nfp
 {
     /// <summary>
     /// Simulated annealing optimizer for NFP-based nesting.