feat: Convert to Sheet Metal takes a solid or a shelled body by its bend edges (#725)

Convert to Sheet Metal now takes a solid or a shelled body by its bend edges (`bends`): the faces reached from the fixed face across those edges become the sheet, keeping the part's envelope, with the flat pattern by the rule's K-factor and radius. Other edges between sheet faces are cut open. The result works with edge flanges, cuts, Unfold/Refold, the flat pattern and DXF. A conversion without `bends` is the plate conversion as before. The optional `bends` field is noted under format 17. Fixes #647.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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NOWN-DEVandClaude Opus 5.5 authored and GitHub committed 2026-10-13 10:52:28 -04:00
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commit a1cb8d4d36
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@@ -265,7 +265,10 @@ impl FeatureKind {
FeatureKind::Thread { face, .. } => pt(face),
FeatureKind::SheetFlange { edges, .. } => edges.iter_mut().for_each(|e| pt(&mut e.point)),
FeatureKind::SheetHem { edges, .. } => edges.iter_mut().for_each(pt),
FeatureKind::SheetConvert { face, .. } => pt(face),
FeatureKind::SheetConvert { face, bends, .. } => {
pt(face);
bends.iter_mut().for_each(pt);
}
FeatureKind::SheetFold { a, b, fixed, .. } => {
pt(a);
pt(b);