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fix(post): post sheet cut-offs in CI Fiber without comp or lead-in

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Posting a nest with a sheet cut-off threw because the CI Fiber writer
treated every contour as a compensated part contour and requires a
linear lead-in after G41/G42 (TF5200 13.2.4.1). Cut-offs are open
centreline cuts with no lead-in and no inside/outside, so they now post
without G41/G42 and run after every part on the sheet so the sheet is
not severed before the parts are cut (matching the CL post).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
aj
2026-09-28 14:14:07 -04:00
co-authored by Claude Opus 5.5
parent 6d7c98ef4a
commit b0997f614b
3 changed files with 80 additions and 2 deletions
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Posts/OpenNest.Posts.CincinnatiCIFiber/CIFiberProgramWriter.cs
+44 -2
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@@ -135,8 +135,14 @@ namespace OpenNest.Posts.CincinnatiCIFiber
private int WriteSheet(Plate plate, TextWriter w, int contourNumber)
{
// Cut-offs run last: severing the sheet first would free the
// skeleton before the parts are cut (matches the CL post).
var ordered = plate
.Parts.Where(p => !p.BaseDrawing.IsCutOff)
.Concat(plate.Parts.Where(p => p.BaseDrawing.IsCutOff));
var partNumber = 0;
foreach (var part in plate.Parts)
foreach (var part in ordered)
{
partNumber++;
contourNumber = WritePart(part, partNumber, w, contourNumber);
@@ -158,10 +164,14 @@ namespace OpenNest.Posts.CincinnatiCIFiber
if (_config.SkipScribe)
contours = contours.Where(c => !IsScribeContour(c)).ToList();
var isCutOff = part.BaseDrawing.IsCutOff;
foreach (var contour in contours)
{
contourNumber++;
WriteContour(contour, contourNumber, w);
if (isCutOff)
WriteCutOffContour(contour, contourNumber, w);
else
WriteContour(contour, contourNumber, w);
}
CIFiberFormatter.Line(w, "( PART END )");
@@ -227,6 +237,38 @@ namespace OpenNest.Posts.CincinnatiCIFiber
CIFiberFormatter.Line(w, SkippableLine(_config.LayerCutEnd));
}
/// <summary>
/// Cut-offs are open straight lines with no lead-in: the line is the
/// beam centreline (CutOffSettings clearance already allows for kerf)
/// and an open line has no inside/outside, so no G41/G42 is selected
/// and the §13.2.4.1 linear-lead-in rule does not apply. The exterior
/// lead layer still runs so the pierce sequence matches a perimeter.
/// </summary>
private void WriteCutOffContour(CIFiberContour contour, int contourNumber, TextWriter w)
{
CIFiberFormatter.Line(w, $"N{contourNumber}:");
CIFiberFormatter.Line(w, SkippableLine(_config.LayerCancel));
CIFiberFormatter.Line(w, $"V.E.R3={contourNumber}");
CIFiberFormatter.Line(w, $"G0X{Fmt(contour.Pierce.X)}Y{Fmt(contour.Pierce.Y)}");
CIFiberFormatter.Line(w, SkippableLine(_config.LayerExteriorLeadin));
CIFiberFormatter.Line(w, SkippableLine(_config.LayerCut));
var prev = contour.Pierce;
if (contour.LeadIn != null)
{
CIFiberFormatter.Line(w, FormatMotion(contour.LeadIn, prev));
prev = contour.LeadIn.EndPoint;
}
foreach (var motion in contour.LeadInExtra.Concat(contour.Cuts))
{
CIFiberFormatter.Line(w, FormatMotion(motion, prev));
prev = motion.EndPoint;
}
CIFiberFormatter.Line(w, SkippableLine(_config.LayerCutEnd));
}
private string ResolvePartComment(Part part)
{
if (!string.IsNullOrWhiteSpace(_config.PartComment))