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feat: add etch mark entities from bend lines to CNC program pipeline

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Etch marks for up bends are now real geometry entities on an ETCH layer
instead of being drawn dynamically. They flow through the full pipeline:
entities → FilterPanel layers → ConvertGeometry (tagged as Scribe) →
post-processor sequencing before cut geometry.

Also includes ShapeProfile normalization (CW perimeter, CCW cutouts)
applied consistently across all import paths, and inward offset support
for cutout shapes in overlap/offset polygon calculations.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
aj
2026-03-28 00:42:49 -04:00
co-authored by Claude Opus 4.6
parent 80e8693da3
commit 2db8c49838
15 changed files with 306 additions and 147 deletions
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OpenNest/Controls/EntityView.cs
-42
View File
@@ -112,8 +112,6 @@ namespace OpenNest.Controls
DrawEntity(e.Graphics, entity, pen);
}
DrawEtchMarks(e.Graphics);
if (SimplifierPreview != null)
{
// Draw tolerance zone (offset lines each side of original geometry)
@@ -240,46 +238,6 @@ namespace OpenNest.Controls
private static bool IsEtchLayer(Layer layer) =>
string.Equals(layer?.Name, "ETCH", System.StringComparison.OrdinalIgnoreCase);
private void DrawEtchMarks(Graphics g)
{
if (Bends == null || Bends.Count == 0)
return;
using var etchPen = new Pen(Color.Green, 1.5f);
var etchLength = 1.0;
foreach (var bend in Bends)
{
if (bend.Direction != BendDirection.Up)
continue;
var start = bend.StartPoint;
var end = bend.EndPoint;
var length = bend.Length;
if (length < etchLength * 3.0)
{
var pt1 = PointWorldToGraph(start);
var pt2 = PointWorldToGraph(end);
g.DrawLine(etchPen, pt1, pt2);
}
else
{
var angle = start.AngleTo(end);
var dx = System.Math.Cos(angle) * etchLength;
var dy = System.Math.Sin(angle) * etchLength;
var s1 = PointWorldToGraph(start);
var e1 = PointWorldToGraph(new Vector(start.X + dx, start.Y + dy));
g.DrawLine(etchPen, s1, e1);
var s2 = PointWorldToGraph(end);
var e2 = PointWorldToGraph(new Vector(end.X - dx, end.Y - dy));
g.DrawLine(etchPen, s2, e2);
}
}
}
private void DrawBendLines(Graphics g)
{
if (Bends == null || Bends.Count == 0)