Mesh-to-STEP keeps planar faces

Evidence generated 2026-10-01T17:30:24.355Z. The checked-in generator rebuilds the sample collection and measurements with one command:

node --experimental-strip-types scripts/build-workbench-evidence.ts

CAD source generation: scripts/build-workbench-cad.py with cadquery-ocp 7.9.3.1.1; checked-in analytic cylinder outputs. The STEP and IGES outputs are checked in so ordinary evidence rebuilds do not require Python.

@astrojs/cloudflare

14.3.0

@astrojs/internal-helpers

0.11.0

@astrojs/markdown-satteri

0.4.0

@cloudflare/containers

0.3.7

astro

7.3.1

fflate

0.8.3

jose

6.2.12

manifold-3d

3.5.1

occt-import-js

0.0.23

rhino3dm

8.32.2

svg-pathdata

9.0.0

three

0.185.1

Geometry source and generator SHA-256 hashes:

core/affine.ts

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core/bytes.ts

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core/convert.ts

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core/deflate-validation.ts

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core/detect.ts

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core/drawing/extrude.ts

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core/drawing/pdf.ts

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core/drawing/raster.ts

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core/drawing/registry.ts

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core/drawing/section.ts

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core/drawing/svg-reader.ts

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core/formats.ts

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core/index.ts

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core/inspect.ts

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core/model.ts

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core/read/3dm.ts

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core/read/3ds.ts

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core/read/3mf-package.ts

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core/read/3mf.ts

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core/read/amf.ts

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core/read/dae.ts

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core/read/fbx-scene.ts

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core/read/fbx.ts

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core/read/gltf.ts

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core/read/obj.ts

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core/read/occt.ts

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core/read/ply.ts

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core/read/scene-validation.ts

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core/read/stl.ts

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core/read/usdz.ts

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core/read/workbench-3mf-reader.ts

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core/read/wrl-preflight.ts

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core/read/wrl.ts

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core/report.ts

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core/three-bridge.ts

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core/units.ts

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core/wasm.ts

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core/workbench/export.ts

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core/workbench/geometry.ts

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core/workbench/svg-transform.ts

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core/workbench/tessellation.ts

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core/workbench/workbench-artwork.ts

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core/workbench/workbench-capability-report.ts

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core/workbench/workbench-drawing.ts

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core/workbench/workbench-editing.ts

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core/workbench/workbench-solid-kernel.ts

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core/write/3mf.ts

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core/write/gltf.ts

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core/write/obj.ts

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core/write/ply.ts

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core/write/step.ts

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core/write/stl.ts

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core/write/usdz.ts

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core/xml-namespaces.ts

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core/xml.ts

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core/zip-strict.ts

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core/zip-write.ts

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core/zip.ts

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corpus/workbench/cylinder.iges

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corpus/workbench/cylinder.step

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package-lock.json

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package.json

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scripts/build-workbench-cad.py

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scripts/build-workbench-evidence.ts

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test/core/workbench-3mf-baseline.test.ts

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test/core/workbench-3mf-integration.test.ts

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test/core/workbench-3mf-package.test.ts

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test/core/workbench-3mf-reader.test.ts

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test/core/workbench-collada-transforms.test.ts

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test/core/workbench-fbx-transforms.test.ts

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test/core/workbench-writer-transforms.test.ts

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test/core/workbench-wrl.test.ts

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test/core/workbench-xml-namespaces.test.ts

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test/core/workbench-zip-strict.test.ts

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test/fixtures/3mf-reader-baseline.json

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test/fixtures/collada-transforms-baseline.json

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test/fixtures/workbench-3mf.ts

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test/fixtures/workbench-challenges.ts

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test/fixtures/workbench-rhino.ts

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test/fixtures/workbench-scene-readers.ts

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test/fixtures/workbench-wrl.ts

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test/fixtures/workbench.ts

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test/fixtures/writer-transforms-baseline.json

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test/fixtures/writer-transforms.ts

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