AutoCAD keeps an open DWG/DXF locked for writing, and ACadSharp's path
constructors (and File.OpenRead / XmlReader.Create) deny write sharing,
so the CAD Converter could not import a part while it was open in
AutoCAD. Open source files read-only with read/write sharing instead.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Show Original drew nothing until Simplify ran, and then showed entities that
had already been through import cleanup. The importers now capture the
entities before any optimization and the overlay draws those from load, while
Simplify keeps starting from the cleaned entities.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
CAM exports often draw a hole as two arcs that overshoot the seam, plus a
short chord back to the start. The Hole Table rejected these contours for
sweeping more than 360 degrees, so drawings like the HT EX flange listed no
round holes.
CadImporter now replaces coradial arcs on one material layer that cover the
whole circle with a Circle, and drops a chord lying wholly on the overlap.
Arcs that leave a gap or overlap by more than MaxSeamOverlap stay as they are.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Shops need a part's overall size on the drawing while converting it. Width and
height are measured live from the geometry that will be cut, so they follow
filters, exclusions, simplifying, breakoffs and tabbed cutouts instead of going
stale. Only the placement is saved; dimensions never touch the program.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Customers and design tools hand over SVGs, and getting them in meant a
trip through another CAD tool. CadImporter now reads them like any other
drawing, and plates, programs and converter entities can be written out.
An SVG's numbers are not drawing units, so import converts to the nest's
units and never guesses: only an absolute width or height counts as a
stated size, since px means 1/96 in to browsers but 1/72 in to
Illustrator. Without one the desktop asks, showing the size each choice
gives, and headless callers must pass the scale or the import fails.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Entity ids came from a process-random sequence, so importing the same
DXF twice produced different source-entity ids and therefore a
different drawing library package (different SHA-256), and an importer
could not tell an unchanged file from a changed one.
CadImporter.Import now derives each entity id from the file's SHA-256
and the entity's position in the import. An unchanged file gives the
same ids and the same package bytes; any change to the file gives
entirely new ids, so suppression, roles and edge selections keyed by id
never move to a different entity.
Select entities in the CAD converter (click, or drag a window/crossing
box) and right-click to exclude/include them or set them to cut, etch or
display only, regardless of their DXF layer. Delete excludes the
selection.
Roles are stored per source entity on the drawing and persisted in the
entity set as an optional `roles` map. Display-only geometry is kept out
of the program, so posts, nesting and verification never see it; placed
parts draw it as a dashed overlay. Load-time scribe repair skips
etch-layer entities set to cut. Per-entity exclusions now survive filter
changes.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
A hole can now be declared a tabbed cutout in the CAD Converter: pick a
circle or any edge of a closed hole, set the tab count and width, and drag
the tabs around the hole. The definition persists on the drawing and in the
nest file, and stays editable from the source entities.
The builder replaces the hole with open cut pieces and uncut spans on a new
Tab layer. Tabs are material, so area, nesting and overlap checks still see
a closed hole, but they are never cut. Plan Cutting and Assign Lead-ins cut
each piece from the slug with the internal lead-in and no lead-out. A lead
that would reach back over a tab is mirrored, and an arc lead onto an arc
pierces straight in. Planning accounts for each span between tabs and runs
the open-cut proof, so its own tabbed cutouts certify; tabs followed by a
lead-out are still refused. Pre-post review flags programs that still
contain tab motions.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Forming backgauge tabs drawn as open cuts came off the sheet loose and could not be
planned. A breakoff merges the scrap into the outline and cuts the shared edge as
closed slots between tabs, so it stays attached and every pierce lands in scrap.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Proves the source-to-program mapping the pins rely on (plan policy: prove
it or stop): the program frame is the source frame moved by
-Source.Offset, never rotated in place; a placement rotates it about the
program origin and adds the part location. Source.Angle is canonical
metadata and plays no part.
The oracle does not use Source.Offset or part rotation bookkeeping. It
recovers the rigid source-to-plate transform from the placed geometry
itself, using two holes of different sizes, and checks every pin at 0,
90 and 37 degrees, placed directly and the way engines place parts
(CreateAtOrigin), after:
- import (BuildDrawing re-origins at the first rapid);
- a converter edit that hides the first-cut hole and so moves
Source.Offset;
- a converter edit of a drawing without source entities (the derived
entities are moved back by Source.Offset);
- save and reload;
- a drawing package round trip.
To exercise the real converter paths headlessly, the desktop's entity
load and in-place apply move into CadImporter.EditableEntities and
CadImporter.ApplyEdit, unchanged; the in-place apply keeps the library
link and cut pins as before.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Repo-wide sweep with the pinned CSharpier 1.3.0 tool. Whitespace and
line-wrapping only; OpenNest.Engine.Tests (109) and OpenNest.IO.Tests
pass after reformat, full solution builds 0 errors.
Added .csharpierignore so csproj/config XML keeps its existing layout
(CSharpier's XML wrapping churns attributes with zero benefit).
Formatting is now enforceable: dotnet csharpier check . passes.
Add OpenNest.IO/Bending/BendRepair: opt-in repair of unambiguous paired
ETCH/SCRIBE bend ticks, bounded to <=3.175 mm endpoint movement with
explicit source units. Cut geometry is never modified.
- CadImportOptions.BendRepair configures it; CadImportResult exposes
per-bend BendRepairReports; CadImporter/Dxf wire it into import.
- Console: --repair-bends-mm <limit> --cad-units inches|mm prints
per-bend reports for newly imported DXFs.
- New OpenNest.IO.Tests project (net8.0, synthetic DXFs, 30 tests)
covering bend detection and repair, added to the solution.
- Update README.md and CLAUDE.md for the new pipeline and build/test
instructions.
DXF files can contain degenerate arcs where start angle equals end angle
(zero sweep), often left as construction artifacts by CAD software.
These create spurious shapes in ShapeBuilder — e.g. SULLYS-033.dxf
showed 5 loops instead of 4 (3 cutouts + perimeter).
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Extract MText and TextEntity from the CadDocument during DXF import
and render them in the EntityView. Handles text alignment (left/center/
right via InsertPoint vs AlignmentPoint) and replaces AutoCAD control
codes (%%p → ±, %%d → °, %%c → ⌀). MText formatting codes are
stripped before display.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Drop CadImportResult.Document: no caller reads it after the
migrations (BendDetectorRegistry runs inside CadImporter.Import
itself, and downstream callers only consume the entity/bend data).
- Drop dead CadConverterForm.GetNextColor() helper: zero callers
since GetDrawings stopped needing it.
- Drop stale 'using OpenNest.Properties;' and unused 'newItems'
local in OnSplitClicked.
- Add Import_WhenNamedDetectorDoesNotExist_ReturnsEmptyBends to
cover the previously untested named-detector branch in
CadImporter.Import.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
ajandClaude Opus 5.5