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83c31d77c4 surface.boundary: surfaces through boundary curves and curve networks (#763 ) (#2129 )

* feat(geom): surfaces through curve networks, and spline spaces to build them

Adds spline_space (clamped B-spline spaces, Hermite interpolation, exact
embedding by Bézier degree elevation and knot insertion, a monotone cubic
for reparameterising) and network (loft, Coons and Gordon surfaces through
curves in one or two directions, with G1/G2 cross-boundary conditions
against a neighbouring face). Part of #763.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

* feat(kernel): boundary surfaces from sketch curves, 3D curves and edges

kernel::boundary_network turns sketch chains, 3D sketch polylines and edge chains
into network curves, gives G1 frames of the faces along open edges
(EdgeFaces), builds the B-spline face (sides split at chain vertices so a
join shares the body's edges) and joins it into a surface body by stitching.
G2 is refused for now (not supported yet). Part of #763.

Co-Authored-By: Claude Opus 5.5 <[email protected]>

* fix(kernel): second derivatives of B-spline surfaces in the vendored truck-geometry

BSplineSurface::uuder and vvder multiplied the second differences by p
instead of p·(p − 1), as BSplineCurve::der2 does, so every surface of
degree p ≥ 3 (NURBS too, through its homogeneous surface) reported
1/(p − 1) of its second derivative: a cubic surface's curvature read as
half. This is why a G2 boundary surface on a cylinder measured half the
curvature it carries (#763). New tests hold both to finite differences
for degrees 2 to 5.

Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01LGeCa5jWWdroMWvXxN3LLM

* feat(kernel): G2 boundary surfaces against a body's face

The network always carried the face's curvature across a G2 edge; the
refusal came from measuring it with truck's halved surface second
derivatives (fixed in the previous commit). EdgeFaces now reads the
face's second fundamental form from the exact second derivatives
instead of differencing the normal. A new test holds the curvature
across a cylinder's edge to the cylinder's within 0.1%, also with a
sheared far curve; G3 is refused (a network holds up to G2).

Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01LGeCa5jWWdroMWvXxN3LLM

* test(kernel): a boundary patch with straight corners measures its own area

A stadium's arcs meet its lines at 180°, so the Coons patch is singular
at its corners. From such a corner the reference mesher's boundary walk
ran onto the B-spline's extrapolation past its domain (a planar spline
passes through every point of its plane there), and the face measured
289 mm² for its 158.5 (#763). The vendored mesher's bounded projection
(nearest_projection, #2043) keeps the walk on the domain; this holds it
there, by the faces, the measuring mesh and the display mesh. The
display path (#1653) was never affected.

Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01LGeCa5jWWdroMWvXxN3LLM

* feat(geom,kernel): three-sided boundary surfaces (one side collapsed to a point)

A network curve may be a PointCurve: the apex where the two sides beside
it meet. The curves through it cross it at the point itself, its row of
the net collapses there, and the kernel's face leaves that side out of
its loop (three edges, one vertex at the apex). One point per patch, as
a side; refused elsewhere, when it moves, or with a continuity
condition. Tests: a triangle and a quarter disc filled flat with their
analytic areas (40 mm², 25π), by geom and by the kernel's faces and
meshes.

Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01LGeCa5jWWdroMWvXxN3LLM

* feat(doc): boundary surfaces through curve networks and loops of three or four

FeatureKind::SurfaceNetwork saves a network as `u` and `v` curves, each
a sketch chain (planar or 3D), a chain of a body's edges with an
optional G1/G2 continuity, or a point (the apex of a three-sided
patch), and an `operation` that can join the surface into the body of
its edges. A SurfaceBoundary of three or four sketch curves, refused
until now, builds as the flat Coons patch of its loop (three collapse
the side opposite the first curve). The format change is one pending
file; feature-walk goldens record the new variant's sketches, bodies
and points.

Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01LGeCa5jWWdroMWvXxN3LLM

* feat(engine): surface.boundary through loops of three or four and curve networks

The command keeps its loop form (two to four curves of one sketch; three
and four now build the flat patch of the loop, crown refused there) and
gains a network form: `u` and `v`, each curve a sketch curve id, a
{sketch?, curves} chain (planar or 3D), a {body, edges, continuity?}
edge chain (g1/g2 with the face beside it) or a {point} for a
three-sided patch, with `operation` new or join. Edits may move between
the two forms (timeline.redefine accepts the command now that it has a
dialog).

Tests: analytic areas of loop patches and of a hyperbolic paraboloid
bounded by four 3D lines (every mesh vertex on z = xy/10), a loft
across two sketches, G1 and G2 measured across a cylinder's edge with
inspect.continuity (angle < 0.1°; curvature jump 1e-16 with G2 against
0.027 with G1), 26 hostile networks refused without panicking, and u/v
added to hostile_params_never_panic.

Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01LGeCa5jWWdroMWvXxN3LLM

* feat(ui): Boundary Surface dialog

Curves and Cross curves take sketch curves and edges (picks that meet
end to end in one sketch or body are one chain); Continuity and
Operation (New Body or Join). Two to four sketch curves of one sketch
with nothing across are the loop patch; anything else is a network.
Edit Feature brings either back (per-side orders, crown and stations
the dialog does not show are kept). Strings in en, ja and zh.

Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01LGeCa5jWWdroMWvXxN3LLM

* docs: ROADMAP M8 and the bridge patch's notes for boundary networks (#763)

Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01LGeCa5jWWdroMWvXxN3LLM

* test(oracle): a boundary surface through a loop, thickened (#763)

Case 83: four sketch curves (a square's three sides and a half circle
for its top) make one boundary surface, thickened 2 mm; analytic values
from tools/oracle-analytic/cases_surfaces.py (V = 2A, area 2A + 2P,
centroid by moments). Recipes gain boundary_surface, thicken and remove.

Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01LGeCa5jWWdroMWvXxN3LLM

* refactor: boundary surfaces, review cleanups

Project onto the face once per derivative evaluation (the frame is
passed to natural() and reused by scale()), keep each track's
finite-difference step instead of rescanning its table, export the
kernel's edge-pick and chain caps and the default station count for
the engine, doc and dialog to share, map TooLarge spline errors to
KernelError::TooLarge, reuse the engine's operation parser, and skip
the dialog's sketch lookup when the picks are no loop.

Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01LGeCa5jWWdroMWvXxN3LLM

---------

Co-authored-by: jyviko <[email protected]>
Co-authored-by: Claude Opus 5.5 <[email protected]>
Co-authored-by: bherbruck <[email protected]>

2026-10-17 21:47:38 -04:00

74 KiB

Raw Blame History

Attribution

Every non-code asset in this repository (images, icons, fonts, example parts) is listed here with its author, source and licence. cargo xtask assets (part of cargo xtask ci) fails if an asset file is missing from this table.

Policy (mandatory): SolidCraft contains no Autodesk iconography, images, artwork, fonts, templates, materials or help text. Every asset is original work by SolidCraft contributors or third-party material under an open licence. Screenshots of Autodesk software are never committed.

Editable drawing code, native projects and shipped exports are collected under assets/.

Files

File	Author	Source	Licence
examples/render-studio.json	SolidCraft contributors	original procedural box/cylinder enclosure script for the integrated Render workspace	MIT OR Apache-2.0
examples/render-opaque-studio.json	SolidCraft contributors	original procedural sphere study varying opaque metal fraction and roughness independently; no external assets or engineering data	MIT OR Apache-2.0
crates/gpu/src/pbr.rs	SolidCraft contributors	original WGSL translation of SolidCraft's opaque surface and fixed studio reference, embedded as Rust source; no external shader code	MIT OR Apache-2.0
assets/icons/app/macos/source/SolidCraft.icon/icon.json	SolidCraft contributors	approved Icon Composer composition and appearance settings for the original SolidCraft artwork	MIT OR Apache-2.0
assets/icons/app/macos/source/SolidCraft.icon/Assets/02-grid.svg	SolidCraft contributors	original perspective grid with elliptical radial alpha, exported from VectorCraft	MIT OR Apache-2.0
assets/icons/app/macos/source/SolidCraft.icon/Assets/02-grid-dark.svg	SolidCraft contributors	original blue perspective grid with elliptical radial alpha, exported from VectorCraft for the Dark appearance	MIT OR Apache-2.0
assets/icons/app/macos/source/SolidCraft.icon/Assets/03-solid-blue-cutout.svg	SolidCraft contributors	original saturated blue CAD solid with transparent topology cutouts, edited and exported with VectorCraft	MIT OR Apache-2.0
assets/icons/app/macos/exports/Assets.car	SolidCraft contributors	Apple actool compilation of assets/icons/app/macos/source/SolidCraft.icon for macOS; contains original artwork only	MIT OR Apache-2.0
assets/archive/icons/macos-v1/source/icon.vectorcraft	SolidCraft contributors	retained editable historical VectorCraft source, with named face and background layers; redundant exports retired	MIT OR Apache-2.0
assets/icons/app/macos/exports/icon.icns	SolidCraft contributors	macOS fallback compiled by Apple's actool from the approved assets/icons/app/macos/source/SolidCraft.icon composition	MIT OR Apache-2.0
docs/screenshots/class-a-blend.png	SolidCraft contributors	screenshot of SolidCraft itself: two boxes bridged by `surface.blend` (a 40x10 sheet, `solidcraft-cli snapshot` of plan/evidence script ev_blend)	MIT OR Apache-2.0
docs/screenshots/class-a-crown.png	SolidCraft contributors	screenshot of SolidCraft itself: a patch crowned with `surface.patch crown=0.3` over a saddle rim (`solidcraft-cli snapshot`)	MIT OR Apache-2.0
docs/screenshots/class-a-boundary.png	SolidCraft contributors	screenshot of SolidCraft itself: a patch through two sketch lines built by `surface.boundary` with `crown: 0.4` (`solidcraft-cli snapshot`)	MIT OR Apache-2.0
docs/screenshots/sample-plate.png	SolidCraft contributors	screenshot of SolidCraft itself (`solidcraft --sample`)	MIT OR Apache-2.0
docs/screenshots/demo-0.8.gif	SolidCraft contributors	original screen recording of the actual SolidCraft 0.8 English desktop UI modelling an original Raspberry Pi 4 case (no logos or branding; the engraved text is set in the system's DejaVu Sans Bold), generated with examples/demo/record_ui.sh and its original animated pointer overlay (9× playback)	MIT OR Apache-2.0
docs/screenshots/demo-0.8.mp4	SolidCraft contributors	original screen recording of the actual SolidCraft 0.8 English desktop UI modelling an original Raspberry Pi 4 case (no logos or branding; the engraved text is set in the system's DejaVu Sans Bold), generated with examples/demo/record_ui.sh and its original animated pointer overlay (9× playback)	MIT OR Apache-2.0
docs/screenshots/rover-build.gif	0xlillith (model); SolidCraft contributors (recording)	screen recording of the actual SolidCraft desktop UI replaying the timeline of the SELENE rover (`Rover-recorded.solidcraft` from https://github.com/0xlillith/solidcraft-rover, an original model by 0xlillith built through SolidCraft MCP); the model's lettering follows Ubuntu Light outlines (Canonical Ltd., Ubuntu Font Licence 1.0, as noted in that repository); the emblem is the SolidCraft project icon (2× playback)	MIT OR Apache-2.0
docs/screenshots/rover-build.mp4	0xlillith (model); SolidCraft contributors (recording)	screen recording of the actual SolidCraft desktop UI replaying the timeline of the SELENE rover (`Rover-recorded.solidcraft` from https://github.com/0xlillith/solidcraft-rover, an original model by 0xlillith built through SolidCraft MCP); the model's lettering follows Ubuntu Light outlines (Canonical Ltd., Ubuntu Font Licence 1.0, as noted in that repository); the emblem is the SolidCraft project icon	MIT OR Apache-2.0
docs/design/ux-redesign/model-floating.png	SolidCraft contributors	original UX mockup (Model tab, floating layout) rendered from an HTML mockup that uses the original Technical Accent icon set; no third-party artwork, and not a screenshot of any other CAD product	MIT OR Apache-2.0
docs/design/ux-redesign/model-compact.png	SolidCraft contributors	original UX mockup (Model tab, compact docked layout) rendered from an HTML mockup that uses the original Technical Accent icon set; no third-party artwork, and not a screenshot of any other CAD product	MIT OR Apache-2.0
docs/design/ux-redesign/sketch.png	SolidCraft contributors	original UX mockup (Sketch tab) rendered from an HTML mockup that uses the original Technical Accent icon set; no third-party artwork, and not a screenshot of any other CAD product	MIT OR Apache-2.0
docs/design/ux-redesign/sheet-metal.png	SolidCraft contributors	original UX mockup (Sheet Metal contextual tab) rendered from an HTML mockup that uses the original Technical Accent icon set; no third-party artwork, and not a screenshot of any other CAD product	MIT OR Apache-2.0
docs/design/ux-redesign/start-page.png	SolidCraft contributors	original UX mockup (start page (File view)) rendered from an HTML mockup that uses the original Technical Accent icon set; no third-party artwork, and not a screenshot of any other CAD product	MIT OR Apache-2.0
docs/design/ux-redesign/workspaces.png	SolidCraft contributors	original UX mockup (workspace switcher) rendered from an HTML mockup that uses the original Technical Accent icon set; no third-party artwork, and not a screenshot of any other CAD product	MIT OR Apache-2.0
docs/design/ux-redesign/command-map.png	SolidCraft contributors	original UX mockup (ribbon command map) rendered from an HTML mockup that uses the original Technical Accent icon set; no third-party artwork, and not a screenshot of any other CAD product	MIT OR Apache-2.0
assets/branding/web/source/og.png	SolidCraft contributors	original 1280 × 640 social preview card (the SolidCraft mark, name and tagline), served by the docs site for link previews	MIT OR Apache-2.0
docs/book/src/generated/sample-plate.png	SolidCraft contributors	copy of docs/screenshots/sample-plate.png made by `cargo xtask book` (gitignored)	MIT OR Apache-2.0
docs/book/src/generated/bracket.png	SolidCraft contributors	rendered by `cargo xtask book` (`solidcraft-cli snapshot examples/bracket.json`; gitignored)	MIT OR Apache-2.0
docs/book/src/generated/enclosure.png	SolidCraft contributors	rendered by `cargo xtask book` (`solidcraft-cli snapshot docs/book/scripts/enclosure.json`; gitignored)	MIT OR Apache-2.0
docs/book/src/generated/revolve.png	SolidCraft contributors	rendered by `cargo xtask book` (`solidcraft-cli snapshot docs/book/scripts/revolve.json`; gitignored)	MIT OR Apache-2.0
docs/book/src/generated/sheet-metal.png	SolidCraft contributors	rendered by `cargo xtask book` (`solidcraft-cli snapshot docs/book/scripts/sheet-metal.json`; gitignored)	MIT OR Apache-2.0
assets/fonts/liberation-sans/LiberationSans-Regular.ttf	Red Hat, Inc. (Liberation Fonts 2.x; digitized data Google)	https://github.com/liberationfonts (Debian fonts-liberation), unmodified; licence text in assets/fonts/liberation-sans/OFL.txt; used for sketch Text outlines	SIL OFL 1.1
assets/fonts/biz-udp-gothic/BIZUDPGothic-Regular.ttf	The BIZ UDGothic Project Authors	https://github.com/googlefonts/morisawa-biz-ud-gothic (Google Fonts), unmodified; licence text in assets/fonts/biz-udp-gothic/OFL.txt; used for web UI Japanese font	SIL OFL 1.1
tests/oracle/17-loft/reference.stl	SolidCraft contributors	triangulation of our own recipe (tests/oracle/17-loft/recipe.json) built with FreeCAD as an external tool by tools/freecad-oracle	MIT OR Apache-2.0
tests/oracle/23-bracket-multifeature/reference.stl	SolidCraft contributors	triangulation of our own recipe (tests/oracle/23-bracket-multifeature/recipe.json) built with FreeCAD as an external tool by tools/freecad-oracle	MIT OR Apache-2.0
tests/oracle/28-blind-pocket-fillets/reference.stl	SolidCraft contributors	triangulation of our own recipe (tests/oracle/28-blind-pocket-fillets/recipe.json) built with FreeCAD as an external tool by tools/freecad-oracle	MIT OR Apache-2.0
tests/oracle/30-fillet-after-shell/reference.stl	SolidCraft contributors	triangulation of our own recipe (tests/oracle/30-fillet-after-shell/recipe.json) built with FreeCAD as an external tool by tools/freecad-oracle	MIT OR Apache-2.0
tests/oracle/31-fillet-l-all-edges/reference.stl	SolidCraft contributors	triangulation of our own recipe (tests/oracle/31-fillet-l-all-edges/recipe.json) built with FreeCAD as an external tool by tools/freecad-oracle	MIT OR Apache-2.0
tests/oracle/34-chamfer-then-fillet/reference.stl	SolidCraft contributors	triangulation of our own recipe (tests/oracle/34-chamfer-then-fillet/recipe.json) built with FreeCAD as an external tool by tools/freecad-oracle	MIT OR Apache-2.0
tests/oracle/35-fillet-curved-curved/reference.stl	SolidCraft contributors	triangulation of our own recipe (tests/oracle/35-fillet-curved-curved/recipe.json) built with FreeCAD as an external tool by tools/freecad-oracle	MIT OR Apache-2.0
tests/oracle/36-corner-blend-two-radii/reference.stl	SolidCraft contributors	triangulation of our own recipe (tests/oracle/36-corner-blend-two-radii/recipe.json) built with FreeCAD as an external tool by tools/freecad-oracle	MIT OR Apache-2.0
tests/oracle/37-pyramid-apex-blend/reference.stl	SolidCraft contributors	triangulation of our own recipe (tests/oracle/37-pyramid-apex-blend/recipe.json) built with FreeCAD as an external tool by tools/freecad-oracle	MIT OR Apache-2.0
tests/oracle/39-tee-pipe/reference.stl	SolidCraft contributors	triangulation of our own recipe (tests/oracle/39-tee-pipe/recipe.json) built with FreeCAD as an external tool by tools/freecad-oracle	MIT OR Apache-2.0
tests/oracle/41-tube-radial-holes/reference.stl	SolidCraft contributors	triangulation of our own recipe (tests/oracle/41-tube-radial-holes/recipe.json) built with FreeCAD as an external tool by tools/freecad-oracle	MIT OR Apache-2.0
tests/oracle/42-overlapping-patterns/reference.stl	SolidCraft contributors	triangulation of our own recipe (tests/oracle/42-overlapping-patterns/recipe.json) built with FreeCAD as an external tool by tools/freecad-oracle	MIT OR Apache-2.0
tests/oracle/47-draft-curved-pocket/reference.stl	SolidCraft contributors	triangulation of our own recipe (tests/oracle/47-draft-curved-pocket/recipe.json) built with FreeCAD as an external tool by tools/freecad-oracle	MIT OR Apache-2.0
tests/oracle/51-loft-rect-circle-offset/reference.stl	SolidCraft contributors	triangulation of our own recipe (tests/oracle/51-loft-rect-circle-offset/recipe.json) built with FreeCAD as an external tool by tools/freecad-oracle	MIT OR Apache-2.0
tests/oracle/56-holes-on-curved-face/reference.stl	SolidCraft contributors	triangulation of our own recipe (tests/oracle/56-holes-on-curved-face/recipe.json) built with FreeCAD as an external tool by tools/freecad-oracle	MIT OR Apache-2.0
tests/oracle/58-phone-stand/reference.stl	SolidCraft contributors	triangulation of our own recipe (tests/oracle/58-phone-stand/recipe.json) built with FreeCAD as an external tool by tools/freecad-oracle	MIT OR Apache-2.0
tests/oracle/59-enclosure-base/reference.stl	SolidCraft contributors	triangulation of our own recipe (tests/oracle/59-enclosure-base/recipe.json) built with FreeCAD as an external tool by tools/freecad-oracle	MIT OR Apache-2.0
tests/oracle/61-shaft-keyway/reference.stl	SolidCraft contributors	triangulation of our own recipe (tests/oracle/61-shaft-keyway/recipe.json) built with FreeCAD as an external tool by tools/freecad-oracle	MIT OR Apache-2.0
tests/oracle/63-hinge-knuckle/reference.stl	SolidCraft contributors	triangulation of our own recipe (tests/oracle/63-hinge-knuckle/recipe.json) built with FreeCAD as an external tool by tools/freecad-oracle	MIT OR Apache-2.0
tests/oracle/65-sketch-gear-tooth/reference.stl	SolidCraft contributors	triangulation of our own recipe (tests/oracle/65-sketch-gear-tooth/recipe.json) built with FreeCAD as an external tool by tools/freecad-oracle	MIT OR Apache-2.0

Code adapted from sibling projects

SolidCraft file	Adapted from	Licence
xtask/src/layers.rs	CADCraft `xtask/src/layers.rs` (dependency layering rules and tests)	MIT OR Apache-2.0
apps/solidcraft/src/control_server.rs	CADCraft `apps/cadcraft/src/control_server.rs` (loopback JSON-lines server)	MIT OR Apache-2.0
crates/ui-egui/src/lib.rs (screenshot queue, synthetic input)	CADCraft `crates/ui-egui/src/lib.rs`	MIT OR Apache-2.0
crates/ui-egui/src/control.rs (method dispatch and screenshot saving)	CADCraft `crates/ui-egui/src/control.rs`	MIT OR Apache-2.0
crates/ui-egui/src/gpu.rs (paint-callback structure)	CADCraft `crates/ui-egui/src/gpu.rs`	MIT OR Apache-2.0
crates/mcp/src/server.rs, crates/mcp/src/backend.rs (JSON-RPC framing, MCP lifecycle, control-port bridge)	CADCraft `crates/mcp/src/{server,backend}.rs`	MIT OR Apache-2.0
crates/mcp/src/tools.rs (tool schema helpers and argument checking)	CADCraft `crates/mcp/src/tools.rs`, GridCraft `crates/mcp/src/tools.rs`	MIT OR Apache-2.0
crates/io/src/threemf.rs (bounded zip part reading and writing)	GridCraft `crates/xlsx/src/package.rs`	MIT OR Apache-2.0
crates/ui-egui/src/titlebar.rs (title bar drag, caption buttons, resize zones, their tests) and the window setup in apps/solidcraft/src/main.rs	VectorCraft `crates/ui-egui/src/titlebar.rs`, `apps/vectorcraft/src/main.rs`	MIT OR Apache-2.0
apps/solidcraft/src/open_documents.rs (macOS: files opened from Finder and the Dock, its test)	VectorCraft `apps/vectorcraft/src/open_documents.rs` (https://github.com/storytold/vectorcraft)	MIT OR Apache-2.0
LICENSE-MIT, LICENSE-APACHE (licence text)	CADCraft	—
.github/workflows/release.yml, .github/workflows/packaging-lint.yml and packaging/ (release pipeline: Linux AppImage/deb/rpm/Flatpak/tar.gz, FreeBSD, macOS dmg, Windows MSI/portable zip, web zip; AppRun, nfpm, Flatpak, WiX and Info.plist templates)	PhotoCraft (https://github.com/storytold/photocraft) `.github/workflows/{release,packaging-lint}.yml`, `packaging/`	Apache-2.0

Incremental HDR codec adapter

crates/render/src/lighting/hdr.rs adapts the scanline/component/old-RLE decoding state machines from the Radiance decoder in image 0.25.10 (source), MIT OR Apache-2.0. Metadata parsing still uses that library. The adapter makes row work cooperative and adds checked run lengths, zero-run rejection, width validation, header/input/radiance bounds and cancellation. Original licence texts are retained in THIRD-PARTY-LICENSES.txt; no images or artwork from that project are copied.

File-format crates

Crate	Used for	Licence
gltf 1.4.1, gltf-json 1.4.1, gltf-derive 1.4.1 (https://github.com/gltf-rs/gltf)	glTF 2.0 import (crates/io/src/gltf_in.rs): the JSON document model and its reference checks; the GLB container, buffers and accessors are read by SolidCraft's own code	MIT OR Apache-2.0
inflections 1.1.1 (build-time, through gltf-derive)	case conversion in gltf's derive macros	MIT
lazy_static 1.5.1 (through gltf-json)		MIT OR Apache-2.0

The glTF test files are built by the tests themselves (crates/io/src/gltf_in_tests.rs, crates/engine/src/tests/gltf_import.rs); no third-party models are committed.

FreeCAD and Rhino import library

FreeCAD .FCStd and Rhino .3dm files are read with cadmpeg 0.6.1 (Apache-2.0), linked as the crates cadmpeg-core, cadmpeg-ir, cadmpeg-registry, cadmpeg-container, cadmpeg-codec-freecad, cadmpeg-codec-rhino and cadmpeg-codec-step in native builds (crates/io/src/native_cad.rs). Only those open-format codecs are built: no default features, so cadmpeg's codecs for commercial CAD formats and its ShapeManager/ACIS codec are not compiled in. Its licence text is in THIRD-PARTY-LICENSES.txt; no code from it is copied into SolidCraft.

Recovered contributions

SolidCraft file	Original contribution	Licence
crates/ui-egui/src/viewport.rs (`nearest_quarter_turn`, `axis_view_orbit`)	N3MI-DG's PR #101: minimal TOP/BOTTOM turns and drag-to-orbit, adapted to the axis gizmo	MIT OR Apache-2.0

Vendored third-party code

Directory	Source	Licence	Changes
vendor/truck-meshalgo	truck-meshalgo 0.4.0, https://github.com/ricosjp/truck (RICOS Co. Ltd.)	Apache-2.0	meshing: bounded parameter searches, collapsed-boundary projection, subdivision and provisional fixed-grid previews (vendor/README.md)
vendor/truck-stepio	truck-stepio 0.3.0, https://github.com/ricosjp/truck (RICOS Co. Ltd.)	Apache-2.0	STEP writer: intersection-curve surfaces written at unique ids (vendor/README.md)
vendor/truck-shapeops	truck-shapeops 0.4.0, https://github.com/ricosjp/truck (RICOS Co. Ltd.)	Apache-2.0	robust meshing and nearest-parameter fallback in booleans; degenerate intersection-curve rejection; face and edge history of booleans; trace macro; corner choice at vertices several intersection curves end on (vendor/README.md)
vendor/truck-geometry	truck-geometry 0.5.0, https://github.com/ricosjp/truck (RICOS Co. Ltd.)	Apache-2.0	intersection curves divided from their neighbours' surface parameters; surface second derivatives (vendor/README.md)
vendor/matext4cgmath	matext4cgmath 0.1.0, https://github.com/ricosjp/matext4cgmath (RICOS Co. Ltd.)	Apache-2.0	root refinement stops after 100 Newton steps (vendor/README.md)

Vendored renderer compatibility fix

vendor/egui-wgpu is egui-wgpu 0.36.2 from https://github.com/emilk/egui (MIT OR Apache-2.0; both original licence texts are included). Rust sources and its original egui.wgsl shader are retained; no images or other artwork are copied. SolidCraft's narrow patch selects a safe 1x MSAA path on the chosen OpenGL adapter and shares that effective count with the surface attachments and CAD callbacks. Vulkan, DirectX 12, Metal and WebGPU retain their requested multisampling. A frame whose meshes the GPU refuses to stage (device lost or out of memory) is skipped with a warning instead of panicking (#1469). Paint callbacks are prepared only after a drawable is acquired, so a skipped surface frame cannot strand cached meshes without their GPU initialization.

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