v0.170.1 — ShapeMeasurements kernel hoist + OCCTBridge.mm split complete

Highlights

ShapeMeasurements moved to the kernel (#100, PR #163)

ShapeMeasurements (per-face areas / centroids / perimeters + per-edge lengths) and Shape.measure(linearTolerance:) are now part of OCCTSwift itself, no longer requiring a dependency on OCCTSwiftTools. Pure Swift relocation — no bridge changes.

import OCCTSwift

let m = box.measure()
m.totalFaceArea       // sum of all face areas
m.faceCentroids[i]    // SIMD3<Double> per face
m.facePerimeters[i]   // outer-wire length per face
m.edgeLengths[i]      // arc length per edge

OCCTSwiftTools consumers continue to work unchanged until that repo bumps its OCCTSwift dependency and removes its duplicate copy (OCCTSwiftTools#13).

OCCTBridge.mm split — DONE (#99, PRs #160-#162)

The monolithic OCCTBridge.mm is now 393 lines of pure foundation (header includes, global mutex, OCCTSewing struct, Internal.h import) — down from 58,168 lines pre-split (−99.3%). All 4,281 operations live in 15 per-OCCT-module translation units:

OCCTBridge_AIS.mm
OCCTBridge_BRepGraph.mm
OCCTBridge_Curve3D.mm
OCCTBridge_Document.mm
OCCTBridge_Geom2d.mm
OCCTBridge_Healing.mm
OCCTBridge_IO.mm
OCCTBridge_Mesh.mm
OCCTBridge_Modeling.mm
OCCTBridge_ProjLib_NLPlate.mm
OCCTBridge_Properties.mm
OCCTBridge_Spatial.mm
OCCTBridge_Surface.mm
OCCTBridge_Topology.mm
OCCTBridge_Visualization.mm

Net-zero behavior change throughout; public C surface unchanged.

Compatibility

• The xcframework binary is identical to v0.170.0 (no OCCT changes), so Package.swift continues to point to the v0.170.0 binary URL. SPM consumers can bump from v0.170.0 to v0.170.1 with no rebuild needed.
• All 3,399 tests across 1,179 suites pass on the per-module structure.

Stats

4,281 wrapped operations | 3,399 tests | 1,179 suites | macOS / iOS / visionOS / tvOS | OCCT 8.0.0-beta2