maziggy 8e839d58db fix(slicer): read the plate model once per part for the post-slice thumbnail (issue #3135) ...

The post-slice thumbnail loaded the sliced 3MF with trimesh, whose reader
    mishandles the Bambu Studio / OrcaSlicer layout: for every component that
    references a file in 3D/Objects/ it re-parses that file and appends all
    of its meshes again. N copies of a part came back as N^2 copies of its
    triangles, and each component carried every other part of the same file.
    25 bins of 10k faces loaded as 6.4M faces; the render took 54 s and
    8.4 GB on the event loop, and the server was OOM-killed.

    Parse the 3MF directly (lxml, entities/DTD/network off, streamed and
    freed element by element), walk objects, components and build items
    (p:path on either) with their transforms, and keep each mesh once.
    Decimate per unique mesh to its share of a face budget before placing
    instances, flip winding on mirrored placements, and skip the thumbnail
    above a face ceiling checked both on what decimation can reach and on
    what it delivered.

    Both slice routes run the render in a thread. The renderer uses
    matplotlib's Figure/Agg API instead of pyplot, whose process-global
    figure state let a threaded plate render and stl_thumbnail's
    event-loop render lay out and close each other's figures.

2026-09-24 14:51:33 +02:00

..

app

fix(slicer): read the plate model once per part for the post-slice thumbnail (issue #3135)

2026-09-24 14:51:33 +02:00

tests

fix(slicer): read the plate model once per part for the post-slice thumbnail (issue #3135)

2026-09-22 10:47:00 +02:00

__init__.py

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