New and BOM import give a new nest the machine clamp rail from
clamps.json when it is enabled, converted to the nest's units; with the
default (off) settings nests are created exactly as before. An
unreadable or partly invalid settings file warns once per session.
Nest > Clamps... edits the current nest's rail: clamp width and depth
and a sorted list of X centers with Add/Remove. OK applies the rail to
every plate (Cancel discards the edits); Load Machine Defaults only
fills the dialog; Save as Machine Defaults writes clamps.json at once
and is labelled as not undone by Cancel. The dialog refuses to open
while nesting or a plate action runs. Its decisions live in the
Linux-tested ClampRailEditor; the form only renders and forwards input.
PlateView draws clamp zones as translucent hatched amber rectangles
over the sheet and parts and repaints when they change. They take part
in no hit test, selection or sequencing.
Persist the machine clamp rail in %APPDATA%\OpenNest\clamps.json, in
the same shape as the nest defaults store: camelCase JSON written with
retry, and a read that never throws. Clamps are off by default: a
missing or unreadable file keeps them off, and nothing changes until
the settings are enabled with at least one center.
Each value is read independently; an invalid one (including a single
bad clamp center) is ignored and reported as Partial so the desktop
can warn that the rail may lack a physical clamp. Values carry their
units and convert between inches and millimeters for a new nest.
Add ClampRail: identical clamps (width along the edge, depth into the
sheet) at X centers measured from the plate origin on the origin-side
edge. It resolves onto any sheet size and quadrant without re-scaling:
clamps wholly beyond the sheet are skipped, one still reaching onto it
is clipped to it, and ids follow rail position (clamp-N) so a physical
clamp keeps its id on every sheet.
A plate can follow a rail (Plate.SetClampRail); its ClampZones are then
derived and re-resolved whenever Size or Quadrant changes, because the
clamps are fixed to the machine. Plates without a rail keep explicit
zones unchanged. Nest.PlateDefaults.ClampRail is the template new plates
follow, and Nest.SetClampRail applies a nest-wide rail to every plate
(an empty rail removes it).
Introduce ClampZone: an axis-aligned rectangular keep-out in plate
coordinates (id + detached Box), validated finite, positive-size and
identified. Plate.ClampZones is a first-class collection alongside
Parts/CutOffs with a ClampZonesChanged event for view refresh. Zones are
never parts: quantity, utilization, cut sequence and CNC output ignore
them (locked by tests); they carry no z-height reasoning.
Nests converted from another CAM system carry its seam overcut inside the
clean contour: the last cut runs on past the contour's own start along its
first cut, then a straight jog returns to the start. The ring then touches
itself at its seam, so neither the cutting planner nor the overlap analyzer
could certify it and the whole plate refused.
SeamOvercut recognizes exactly that shape (same line, or same circle and
direction) and trims it from an owned copy; the retraced tail encloses no
area, so material is unchanged and the drawing is never edited. Any other
self-contact still refuses. Arcs of one circle whose centers were each derived
from their own endpoints agree only within Epsilon, so their spans are now
compared at the seam tolerance: shared spans still refuse as overlap, while
arcs that only meet at a joint or lie apart no longer do.
Plates with parts nested in other parts' cutouts then failed to route, since
the host is cut last and every straight approach from the middle of a crowded
cutout crosses a finished neighbour. CuttingNestedOrder tours each host's
inner parts as one run ending beside the host's own contours, hosts follow
the parts beside them, and learned rules still win. Outside entries are
ordered by clear sight lines to the next cut, the look-ahead toward a host is
its nearest contour point rather than its centre, a cutout containing the
arrival point is routed from that point, and a pass that teaches an order
rule ends the round instead of repeating the blocked approach.
Tests: SeamOvercutTests and CuttingNestedOrderTests; the cutting-planning,
diagnostics and overlap tests in OpenNest.Tests pass (1023 passed, 6 skipped).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
MaterialConfig only ever had one grade per material name, so the tree
and GetMaterial/GetParameters couldn't represent e.g. Mild Steel A36
vs. A1011 as distinct, independently-parameterized entries. Prep work
for an upcoming drawing database that will store material + grade per
drawing and needs to resolve cut parameters by that pair.
- MachineConfig gains GetMaterial(name, grade), GetGrades(name), and a
GetParameters(material, grade, thickness) overload, all keyed through
the existing SharedListNames normalization. The name-only overloads
stay for back-compat ("first grade found").
- MachineConfigForm's tree gains a real tier: Machine -> Material name
(synthetic grouping node) -> Grade -> Thickness. Add/remove gained
"Add Grade" and split "Delete Material" (all grades) from "Delete
Grade" (one entry). Renaming a grade's Name relocates its node to the
matching (or a new) group on focus-loss, keeping the tree in sync
without a full reload.
- No schema/JSON changes; existing machine files keep working as-is.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Report, dialog and diagnostic text across post verification, cutoff
planning, alignment and cutting-plan review repeatedly told the user
what checks weren't (safety certifications, proof, guarantees) instead
of what to do. Reworded these to state the same caveats affirmatively
(inspect X, confirm Y, review Z) without changing the underlying
safety guidance, and updated the tests/docs that pinned the old wording.
Point-in-material used exact Y comparisons, but rings are only nominally
closed: capture admits closure seams and PEP-converted or rotated geometry
carries sub-micro-inch vertex jogs. When a jog straddled the test ray's Y,
the two edges at that shared vertex disagreed which side it was on and the
parity flipped, so a point ten inches outside a material read as interior.
LeadMaterialSnapshot reported leads as entering a neighbour they could not
touch, and the enclosing-perimeter check refused to capture materials whose
rings it misclassified.
Snap the ray comparison by the admitted seam tolerance so both edges at a
shared vertex decide together. Features larger than the tolerance still
count, and containment of a point within the tolerance of an edge stays as
ambiguous as before. On the 93-plate corpus 83 plates are untouched, one
previously refused plate now plans and replays, and 48/93 plates reach
Ready. Accepting more leads also changed one plate's first-found route to a
longer rapid path; that is search ranking, recorded with the measurements.
Also drops an extent-prefilter fast path measured at -6.8% corpus time: it
cleared leads whose native contact was reported beyond any fixed bbox
margin, which NearbyMaterialCheckTests deliberately pins as a refusal.
Capture and preparation agree that a nominal contour may close within
NominalContourClosure.Tolerance inclusively, which converted drawings rely on:
the sampled production corpus carries vertex gaps up to 1e-6. Replay
verification still compared those rings at the exact geometry epsilon, so the
one joint a rotated tool path legitimately bridges refused the whole plate
after the search had already spent its budget.
Census of 91 plates from 60 stored nests: every searched plate containing such
a seam refused with contour-accounting (4 plates, 76.5s of wasted search, worst
71.7s for one 11-part plate), and none of the 42 ready plates had one. Replay
now carries that same admitted endpoint gap as positional and length slack for
the affected ring only. Direction sign, coverage order, retrace detection, ring
counting and selected-emission binding keep the exact epsilon, and capture's
closure admission is unchanged.
With the fix the census yields 45 ready plates instead of 42, no plate changed
any other way, and expansion counts are identical wherever status matched.
P260805-01's 16-part plate plans in 0.76s rather than refusing after 4,129
expansions.
Tests: SeamClosureReplayTests covers seams of 0, 5e-7 and 1e-6 plus four
accounting faults (missing edge, reversed edge, interior shift beyond the
admitted seam, second circuit) that must still refuse, and the beyond-tolerance
capture refusal. OpenNest.Tests 3751, OpenNest.Engine.Tests 690 and
OpenNest.IO.Tests 79 pass; Windows-only projects cannot build on Linux.
aj
