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feat: integrate StripNestEngine into autonest_plate MCP tool

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Runs strip and sequential strategies in competition, picks the
denser result. Reports scores for both strategies in output.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
AJ Isaacs
2026-03-15 21:40:21 -04:00
parent 4d80710b48
commit cd85857816
1 changed files with 47 additions and 45 deletions
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92
OpenNest.Mcp/Tools/NestingTools.cs
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@@ -233,58 +233,28 @@ namespace OpenNest.Mcp.Tools
items.Add(new NestItem { Drawing = drawing, Quantity = qtys[i] });
}
var fillItems = items
.Where(i => i.Quantity > 1)
.OrderBy(i => i.Priority)
.ThenByDescending(i => i.Drawing.Area)
.ToList();
// Strategy 1: Strip nesting
var stripEngine = new StripNestEngine(plate);
var stripResult = stripEngine.Nest(items, null, CancellationToken.None);
var stripScore = FillScore.Compute(stripResult, plate.WorkArea());
var packItems = items
.Where(i => i.Quantity == 1)
.ToList();
// Strategy 2: Current sequential fill
var seqResult = SequentialFill(plate, items);
var seqScore = FillScore.Compute(seqResult, plate.WorkArea());
var workArea = plate.WorkArea();
var totalPlaced = 0;
// Phase 1: Fill multi-quantity drawings with NestEngine.
foreach (var item in fillItems)
{
if (item.Quantity <= 0 || workArea.Width <= 0 || workArea.Length <= 0)
continue;
var engine = NestEngineRegistry.Create(plate);
var parts = engine.FillExact(item, workArea, null, CancellationToken.None);
if (parts.Count > 0)
{
plate.Parts.AddRange(parts);
// TODO: Compactor.Compact(parts, plate);
item.Quantity = System.Math.Max(0, item.Quantity - parts.Count);
totalPlaced += parts.Count;
var placedBox = parts.Cast<IBoundable>().GetBoundingBox();
workArea = ComputeRemainderWithin(workArea, placedBox, plate.PartSpacing);
}
}
// Phase 2: Pack single-quantity items into remaining space.
packItems = packItems.Where(i => i.Quantity > 0).ToList();
if (packItems.Count > 0 && workArea.Width > 0 && workArea.Length > 0)
{
var engine = NestEngineRegistry.Create(plate);
var packParts = engine.PackArea(workArea, packItems, null, CancellationToken.None);
if (packParts.Count > 0)
{
plate.Parts.AddRange(packParts);
totalPlaced += packParts.Count;
}
}
// Pick winner and apply to plate.
var winner = stripScore >= seqScore ? stripResult : seqResult;
var winnerName = stripScore >= seqScore ? "strip" : "sequential";
plate.Parts.AddRange(winner);
var totalPlaced = winner.Count;
var sb = new StringBuilder();
sb.AppendLine($"AutoNest plate {plateIndex}: {(totalPlaced > 0 ? "success" : "no parts placed")}");
sb.AppendLine($"AutoNest plate {plateIndex} ({winnerName} strategy): {(totalPlaced > 0 ? "success" : "no parts placed")}");
sb.AppendLine($" Parts placed: {totalPlaced}");
sb.AppendLine($" Total parts: {plate.Parts.Count}");
sb.AppendLine($" Utilization: {plate.Utilization():P1}");
sb.AppendLine($" Strip score: {stripScore.Count} parts, density {stripScore.Density:P1}");
sb.AppendLine($" Sequential score: {seqScore.Count} parts, density {seqScore.Density:P1}");
var groups = plate.Parts.GroupBy(p => p.BaseDrawing.Name);
foreach (var group in groups)
@@ -293,6 +263,38 @@ namespace OpenNest.Mcp.Tools
return sb.ToString();
}
private static List<Part> SequentialFill(Plate plate, List<NestItem> items)
{
var fillItems = items
.Where(i => i.Quantity != 1)
.OrderBy(i => i.Priority)
.ThenByDescending(i => i.Drawing.Area)
.ToList();
var workArea = plate.WorkArea();
var allParts = new List<Part>();
foreach (var item in fillItems)
{
if (item.Quantity == 0 || workArea.Width <= 0 || workArea.Length <= 0)
continue;
var engine = new DefaultNestEngine(plate);
var parts = engine.Fill(
new NestItem { Drawing = item.Drawing, Quantity = item.Quantity },
workArea, null, CancellationToken.None);
if (parts.Count > 0)
{
allParts.AddRange(parts);
var placedBox = parts.Cast<IBoundable>().GetBoundingBox();
workArea = ComputeRemainderWithin(workArea, placedBox, plate.PartSpacing);
}
}
return allParts;
}
private static Box ComputeRemainderWithin(Box workArea, Box usedBox, double spacing)
{
var hWidth = workArea.Right - usedBox.Right - spacing;