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fix: improve arc-tangency fitting and add layered engrave/cut passes for GravographIS

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GeometrySimplifier/ArcFit now fit arcs that pass exactly through run
endpoints while balancing tangency error between trusted and estimated
directions, fixing arcs that previously bulged or broke tangent
continuity at fillet/compound-curve junctions.

GravographIS post processor gains per-layer (engrave/cut) tool passes
via a new GravographISPostConfig, so ENGRAVE/ETCH-tagged geometry runs
as a separate scribe pass with its own feed/depth and an operator
pause before the cut pass (spring-floated spindle needs a tool swap).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
aj
2026-08-06 23:15:18 -04:00
co-authored by Claude Opus 4.6
parent e493d83899
commit a085339ba9
15 changed files with 1084 additions and 138 deletions
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OpenNest.Core/Converters/ConvertGeometry.cs
+17 -7
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@@ -87,14 +87,15 @@ namespace OpenNest.Converters
lastpt = endpt;
var layer = ClassifyLayer(arc);
var sweep = System.Math.Abs(arc.SweepAngle());
if (sweep < Tolerance.Epsilon || sweep.IsEqualTo(Angle.TwoPI))
{
pgm.LineTo(endpt);
pgm.Codes.Add(new LinearMove(endpt) { Layer = layer });
}
else
{
pgm.ArcTo(endpt, arc.Center, arc.IsReversed ? RotationType.CW : RotationType.CCW);
pgm.Codes.Add(new ArcMove(endpt, arc.Center, arc.IsReversed ? RotationType.CW : RotationType.CCW) { Layer = layer });
}
return lastpt;
@@ -107,7 +108,7 @@ namespace OpenNest.Converters
if (startpt.DistanceTo(lastpt) > Tolerance.ChainTolerance)
pgm.MoveTo(startpt);
pgm.ArcTo(startpt, circle.Center, circle.Rotation);
pgm.Codes.Add(new ArcMove(startpt, circle.Center, circle.Rotation) { Layer = ClassifyLayer(circle) });
lastpt = startpt;
return lastpt;
@@ -118,13 +119,22 @@ namespace OpenNest.Converters
if (line.StartPoint.DistanceTo(lastpt) > Tolerance.ChainTolerance)
pgm.MoveTo(line.StartPoint);
var move = new LinearMove(line.EndPoint);
if (string.Equals(line.Layer?.Name, "ETCH", System.StringComparison.OrdinalIgnoreCase))
move.Layer = LayerType.Scribe;
pgm.Codes.Add(move);
pgm.Codes.Add(new LinearMove(line.EndPoint) { Layer = ClassifyLayer(line) });
lastpt = line.EndPoint;
return lastpt;
}
// Engrave/etch geometry maps to Scribe so the post processor can treat it as a
// separate tool pass; everything else keeps the move's default Cut layer.
private static LayerType ClassifyLayer(Entity geo)
{
var name = geo.Layer?.Name;
if (string.Equals(name, "ENGRAVE", System.StringComparison.OrdinalIgnoreCase) ||
string.Equals(name, "ETCH", System.StringComparison.OrdinalIgnoreCase))
return LayerType.Scribe;
return LayerType.Cut;
}
}
}