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maziggy
988c00554e
The slice modal previously rendered exactly one filament dropdown and
silently truncated multi-color 3MFs to a single profile, producing wrong
colours on every multi-filament print. End-to-end fix across sidecar,
backend, and frontend.
Sidecar (orca-slicer-api / bambuddy/profile-resolver, separate commit):
- /slice accepts up to 16 repeated filamentProfile parts; slicing
service materializes each and joins paths with `;` for
--load-filaments.
- /profiles/bundled emits filament_type and filament_colour per leaf
so the bundled tier carries metadata into the modal.
Bambuddy backend:
- SliceRequest gains filament_presets: list[PresetRef]. Validator
accepts three shapes (multi-color array, source-aware singular,
legacy bare-int id) and lands them all on a populated array before
the route handler runs — fully backwards-compatible.
- SlicerApiService.slice_with_profiles takes filament_profile_jsons:
list[str] and sends one filamentProfile multipart part per profile
(in submission order) so the sidecar receives N profiles cleanly.
- New service slice_preview runs the sidecar's slice_without_profiles
against an unsliced project file's embedded settings, parses the
result's slice_info.config, and returns the canonical per-plate
filament list. Cached by (kind, source_id, plate_id, content_hash)
with LRU eviction at 256 entries, per-key asyncio.Lock prevents
thundering-herd; transient sidecar failures are NOT cached so they
retry naturally; parse failures ARE cached (deterministic property
of the input, no point re-running).
- /filament-requirements endpoint chain: slice_info.config (existing,
sliced files) → preview-slice (new, unsliced project files) →
project_settings.config + painted-face heuristic with 5% noise
threshold (sidecar-down fallback).
- threemf_tools gains extract_project_filaments_from_3mf and
extract_plate_extruder_set_from_3mf — the latter unions object
top-level extruder, per-part overrides, and painted-face quadtree
leaves (1-E nibbles in paint_color attrs of <triangle> elements
inside per-object .model files).
- Cloud preset listing no longer fetches per-preset detail (Bambu's
rate limit at ~10/sec returns 429 on every request for users with
50+ presets). Unified-listing dedup pass instead backfills metadata
cross-tier so a cloud entry that wins dedup over a same-named local
entry inherits the local's filament_type / filament_colour.
Frontend:
- SliceModal multi-step: plate-picker first when the source is a
multi-plate 3MF, then preset dropdowns. One filament dropdown per
AMS slot the plate actually uses, each pre-picked by metadata
match against user's local + standard presets via existing
colorsAreSimilar / normalizeColorForCompare utils.
- SliceModal-only tier priority is now local → cloud → standard
(was cloud → local → standard). Other consumers of /slicer/presets
keep the existing cloud-first order.
- Submits filament_presets array; backfills the legacy singular
filament_preset from the array's first entry for stale-tab
compatibility.
- i18n keys added across all 8 locales: slice.filamentSlot,
slice.tier.{local,cloud,standard}, slice.cloud.{notAuthenticated,
expired,unreachable}, slice.noPresetsForSlot,
slice.allPresetsRequired (en + de fully translated; six others
seeded with English copies pending native translation, matching
the project's existing flow).
Permissions: no new endpoint paths added. Preview-slice runs inside
/filament-requirements (LIBRARY_READ / ARCHIVES_READ) and multi-filament
dispatch runs inside POST /slice (LIBRARY_UPLOAD). No auth surface
widened.
Tests: 6 SliceRequest schema tests for multi-filament + legacy-new
precedence; 9 unit tests for slice_preview cache behaviour (LRU
eviction with lock cleanup, content-hash invalidation, concurrent
thundering-herd guard, no-cache-poison on transient sidecar failure);
15 unit tests for the two new threemf_tools helpers (5 + 10 cases
including the 60/40 painted-threshold regression pin); a multi-filament
wire-format test pinning the multipart part count + order; 22 frontend
SliceModal tests covering plate picker, multi-color render,
metadata-aware pre-pick, manual override, and the new tier order.
