ajandClaude Opus 5.5
1b5e1b14a6
Every nesting-geometry consumer filtered only rapids, so scribe/etch moves counted as part material. An etch tick that ends a hair outside the outline (PEP bend ticks start on the notch edge) made the part "open geometry leaving the material region": the job validator threw and every built-in engine plus Gpt6Astra crashed on real PEP jobs (PT75, drawing 4980 A01 PT77). Marks are only on the surface, so they should never affect placement, collision, area, or validation. - SpecialLayers.IsMaterial excludes Rapid and Scribe; used by drawing area, canonical angle, part collision, PartGeometry, plate perimeter, best-fit/pair evaluation, rotation analysis, GPU evaluators, and both validators. Timing, display, splitting and posts still see marks. - ConvertGeometry also maps the saved SCRIBE layer name to Scribe, so programs rebuilt from stored entities keep their marks. - NestReader repairs older files (e.g. PepNestExport output) whose programs saved etch as cut moves while source entities kept SCRIBE. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
79 lines
2.6 KiB
C#
79 lines
2.6 KiB
C#
using System.Linq;
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using OpenNest.Converters;
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using OpenNest.Geometry;
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using OpenNest.Math;
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namespace OpenNest.Engine.BestFit
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{
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public static class PolygonHelper
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{
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public static PolygonExtractionResult ExtractPerimeterPolygon(
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Drawing drawing,
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double halfSpacing
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)
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{
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var entities = ConvertProgram
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.ToGeometry(drawing.Program)
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.Where(e => SpecialLayers.IsMaterial(e.Layer))
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.ToList();
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if (entities.Count == 0)
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return new PolygonExtractionResult(null, Vector.Zero);
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var definedShape = new ShapeProfile(entities);
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var perimeter = definedShape.Perimeter;
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if (perimeter == null)
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return new PolygonExtractionResult(null, Vector.Zero);
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// Circumscribe so the polygon never under-estimates the part (or its offset).
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var polygon =
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halfSpacing > 0
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? ClipperBridge
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.OffsetPerimeter(perimeter, halfSpacing, 0.01, circumscribe: true)
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.LargestOuter()
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: perimeter.ToPolygonWithTolerance(0.01, circumscribe: true);
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if (polygon == null || polygon.Vertices.Count < 3)
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return new PolygonExtractionResult(null, Vector.Zero);
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// Normalize: move polygon to origin.
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polygon.UpdateBounds();
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var bb = polygon.BoundingBox;
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polygon.Offset(-bb.Left, -bb.Bottom);
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// No correction needed: BestFitFinder always pairs the same drawing with
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// itself, so the polygon-to-part offset is identical for both parts and
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// cancels out in the NFP displacement.
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return new PolygonExtractionResult(polygon, Vector.Zero);
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}
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public static Polygon RotatePolygon(Polygon polygon, double angle, bool reNormalize = true)
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{
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if (angle.IsEqualTo(0))
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return polygon;
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var result = new Polygon();
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var cos = System.Math.Cos(angle);
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var sin = System.Math.Sin(angle);
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foreach (var v in polygon.Vertices)
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{
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result.Vertices.Add(new Vector(v.X * cos - v.Y * sin, v.X * sin + v.Y * cos));
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}
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if (reNormalize)
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{
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// Re-normalize to origin.
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result.UpdateBounds();
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var bb = result.BoundingBox;
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result.Offset(-bb.Left, -bb.Bottom);
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}
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return result;
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}
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}
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public record PolygonExtractionResult(Polygon Polygon, Vector Correction);
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}
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