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feat(mcp): use FillExact + Compactor in autonest_plate

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Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
AJ Isaacs
2026-03-15 12:43:41 -04:00
parent 521ada17cc
commit 56592f909a
1 changed files with 67 additions and 6 deletions
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73
OpenNest.Mcp/Tools/NestingTools.cs
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@@ -193,7 +193,7 @@ namespace OpenNest.Mcp.Tools
}
[McpServerTool(Name = "autonest_plate")]
[Description("NFP-based mixed-part autonesting. Places multiple different drawings on a plate with geometry-aware collision avoidance and simulated annealing optimization. Produces tighter layouts than pack_plate by allowing parts to interlock.")]
[Description("Mixed-part autonesting. Fills the plate with multiple different drawings using iterative per-drawing fills with remainder-strip packing.")]
public string AutoNestPlate(
[Description("Index of the plate")] int plateIndex,
[Description("Comma-separated drawing names")] string drawingNames,
@@ -233,20 +233,81 @@ namespace OpenNest.Mcp.Tools
items.Add(new NestItem { Drawing = drawing, Quantity = qtys[i] });
}
var parts = AutoNester.Nest(items, plate);
plate.Parts.AddRange(parts);
var fillItems = items
.Where(i => i.Quantity > 1)
.OrderBy(i => i.Priority)
.ThenByDescending(i => i.Drawing.Area)
.ToList();
var packItems = items
.Where(i => i.Quantity == 1)
.ToList();
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 = new NestEngine(plate);
var parts = engine.FillExact(item, workArea, null, CancellationToken.None);
if (parts.Count > 0)
{
plate.Parts.AddRange(parts);
Compactor.Compact(parts, plate);
item.Quantity = System.Math.Max(0, item.Quantity - parts.Count);
totalPlaced += parts.Count;
workArea = ComputeRemainderStrip(plate);
}
}
// 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 before = plate.Parts.Count;
var engine = new NestEngine(plate);
engine.PackArea(workArea, packItems);
totalPlaced += plate.Parts.Count - before;
}
var sb = new StringBuilder();
sb.AppendLine($"AutoNest plate {plateIndex}: {(parts.Count > 0 ? "success" : "no parts placed")}");
sb.AppendLine($" Parts placed: {parts.Count}");
sb.AppendLine($"AutoNest plate {plateIndex}: {(totalPlaced > 0 ? "success" : "no parts placed")}");
sb.AppendLine($" Parts placed: {totalPlaced}");
sb.AppendLine($" Total parts: {plate.Parts.Count}");
sb.AppendLine($" Utilization: {plate.Utilization():P1}");
var groups = parts.GroupBy(p => p.BaseDrawing.Name);
var groups = plate.Parts.GroupBy(p => p.BaseDrawing.Name);
foreach (var group in groups)
sb.AppendLine($" {group.Key}: {group.Count()}");
return sb.ToString();
}
private static Box ComputeRemainderStrip(Plate plate)
{
if (plate.Parts.Count == 0)
return plate.WorkArea();
var usedBox = plate.Parts.Cast<IBoundable>().GetBoundingBox();
var fullArea = plate.WorkArea();
var hWidth = fullArea.Right - usedBox.Right - plate.PartSpacing;
var hStrip = hWidth > 0
? new Box(usedBox.Right + plate.PartSpacing, fullArea.Y, hWidth, fullArea.Length)
: Box.Empty;
var vHeight = fullArea.Top - usedBox.Top - plate.PartSpacing;
var vStrip = vHeight > 0
? new Box(fullArea.X, usedBox.Top + plate.PartSpacing, fullArea.Width, vHeight)
: Box.Empty;
return hStrip.Area() >= vStrip.Area() ? hStrip : vStrip;
}
}
}