fcb418f119
- threemf_stream reads Bambu Studio / OrcaSlicer project metadata: plates
(name, objects, preview images), filaments, and each part's type and
extruder. Placements now record which build item and part they belong to.
- convert_3mf.py leaves out negative/modifier/support parts, colours each
part by its filament (a part's extruder 0 falls back to its object's), and
takes --plate N. Geometry is still stored once per (part, colour).
- New threemf_info.py lists plates and filaments without loading geometry
and extracts plate preview images; served via /api/{files,entries}/:id/project.
- /glb?plate=N builds and caches a per-plate preview. Cached GLB names carry
a converter version, so previews made before colours are rebuilt.
- Model detail: plate chips (with the slicer's plate images) under the
viewer — multi-plate projects open on plate 1 — plus "All plates", and a
Filaments section with colour swatches.
- Fingerprints leave out negative/modifier parts, so a project matches the
model it prints.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
37 lines
1.7 KiB
JavaScript
37 lines
1.7 KiB
JavaScript
// Converts 3MF files to GLB via the Python/trimesh sidecar, so the browser can
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// render Bambu/MakerWorld production-extension 3MFs (which the JS 3MFLoader can't),
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// and reads their slicer project details (plates, filaments).
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const { runScript } = require('./python');
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// Parses a sidecar script's last JSON line, turning its error / failure into a throw.
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function parseResult({ err, stdout, stderr }, what) {
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let result = null;
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try {
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result = JSON.parse(stdout.trim().split('\n').pop());
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} catch { /* handled below */ }
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if (result && result.error) throw new Error(result.error);
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if (err) {
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if (err.killed) throw new Error(`Timed out ${what}.`);
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throw new Error(stderr ? stderr.trim().split('\n').slice(-3).join(' ') : err.message);
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}
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if (!result) throw new Error(`Unparseable output ${what}.`);
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return result;
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}
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// Returns { glb, plate, volume_cm3, bbox, faces } or throws. `plate` limits the
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// output to one plate of a slicer project.
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async function convert3mfToGlb(inputPath, outputPath, { plate = null } = {}) {
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const args = [inputPath, outputPath];
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if (plate) args.push('--plate', String(plate));
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return parseResult(await runScript('convert_3mf.py', args, { timeout: 120000 }), 'converting this 3MF for preview');
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}
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// Returns { plates: [{ index, name, objectCount, thumbnail }], filaments: [{ colour, type }] }.
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// Plate previews are written into imagesDir as <n>.png / <n>-small.png.
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async function readProjectInfo(inputPath, imagesDir) {
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return parseResult(await runScript('threemf_info.py', [inputPath, '--images', imagesDir], { timeout: 60000 }),
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'reading this 3MF project');
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}
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module.exports = { convert3mfToGlb, readProjectInfo };
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