Project name
OCCTSwift
Type
wrapper
Category
swift
Tagline
Comprehensive Swift wrapper for OCCT — B-Rep solid modeling for macOS, iOS, visionOS, tvOS.
Description
OCCTSwift is a comprehensive Swift wrapper for OpenCASCADE Technology, providing B-Rep solid modeling, OCAF document handling, BRepGraph topology analysis, drawing/projection, and ML-friendly graph samplers natively on Apple platforms. It pins to OCCT 8.0.0 GA (released 2026-05-07) and ships a pre-built OCCT.xcframework so consumers don't need to build OCCT themselves. Roughly 4,279 OCCT operations are wrapped across the public Swift API.
The kernel anchors a layered family of public Swift packages, each with a narrow role: OCCTSwiftIO (headless STEP / IGES / STL / OBJ / BREP / glTF I/O, no Viewport dependency), OCCTSwiftMesh (mesh decimation / smoothing / repair via vendored meshoptimizer), OCCTSwiftViewport (Metal-based 3D viewport for UIKit / AppKit / SwiftUI), OCCTSwiftTools (kernel ↔ viewport bridge: converts Shape to ViewportBody with picking metadata), OCCTSwiftAIS (high-level interactive services — selection-from-topology, manipulator widgets, dimension annotations, scene objects), OCCTSwiftScripts (the occtkit CLI with 26+ JSON-driven verbs and a script harness), and OCCTMCP (MCP server exposing OCCT modeling to LLM agents). Lower layers don't know about upper layers, so headless / batch / server-side users can depend on the kernel alone without pulling Metal in transitively.
All public packages graduated to SemVer-stable v1.0.0 simultaneously on 2026-05-07 alongside OCCT 8.0.0 GA. Pre-1.0 was a coordinated soak across rc3 → rc4 → rc5 → beta1 → beta2 → GA spanning ~170 OCCTSwift point releases. From v1.0 onward the cohort follows SemVer strictly. See the ecosystem map for an architecture overview and a "when to use which" guide.
OCCTSwift is the Swift-native choice for engineering CAD, parametric modelling, design automation, ML feature extraction over B-Rep geometry, and AI-driven CAD authoring on Apple platforms. The whole cohort is indexed on Swift Package Index (SwiftPackageIndex/PackageList#13496).
Software type
open-source
License
LGPL-2.1-only
Homepage URL
https://github.com/gsdali/OCCTSwift
Repository URL
https://github.com/gsdali/OCCTSwift
Documentation URL
https://github.com/gsdali/OCCTSwift/blob/main/docs/ecosystem.md
Industries
General, Software Development, Engineering, Manufacturing
Scopes
Wrapper, CAD, 3D modeling, Geometry Processing, Data Exchange, STEP, Visualization, Mesh Generation
Languages
Swift, Objective-C++, C++
Platforms
Logo or screenshot URL
No response
Affiliation confirmation
Additional context
OCCTSwift is the keystone of an 8-package public ecosystem (OCCTSwift, OCCTSwiftIO, OCCTSwiftMesh, OCCTSwiftViewport, OCCTSwiftTools, OCCTSwiftAIS, OCCTSwiftScripts, OCCTMCP) that all graduated to SemVer-stable v1.0.0 alongside OCCT 8.0.0 GA. If a single registry entry per project is preferred, the kernel (this submission) is the canonical entry point and the ecosystem map at docs/ecosystem.md directs readers to the right sibling for a given task. Happy to file additional entries for specific siblings if the registry prefers per-package granularity — let me know.
Notable ecosystem features that exercise OCCT 8.0 GA capabilities:
- Full
BRepGraph (graph-based topology) wrapping including the EditorView mutation surface and MeshView two-tier mesh storage from OCCT 8.0 beta1.
TopologyGraph.exportForML() (lifted to OCCTSwiftIO in v0.171.0) — flat / COO-format graph tensors for GNN / UV-Net / BRepNet pipelines, with face UV-grid samplers and edge curve samplers in the kernel.- Per-input boolean history (
Shape.unionWithFullHistory(_:) etc., v1.0.2) — exposes BRepAlgoAPI Modified / Generated / IsDeleted for selection-remapping consumers.
- STEP / IGES / STL / OBJ / BREP / glTF I/O via OCCTSwiftIO, with full color, dimension, datum, and geometric tolerance support.
Indexed on Swift Package Index. Used downstream by several private CAD applications and design-automation tools the maintainer ships.
Project name
OCCTSwift
Type
wrapper
Category
swift
Tagline
Comprehensive Swift wrapper for OCCT — B-Rep solid modeling for macOS, iOS, visionOS, tvOS.
Description
OCCTSwift is a comprehensive Swift wrapper for OpenCASCADE Technology, providing B-Rep solid modeling, OCAF document handling, BRepGraph topology analysis, drawing/projection, and ML-friendly graph samplers natively on Apple platforms. It pins to OCCT 8.0.0 GA (released 2026-05-07) and ships a pre-built
OCCT.xcframeworkso consumers don't need to build OCCT themselves. Roughly 4,279 OCCT operations are wrapped across the public Swift API.The kernel anchors a layered family of public Swift packages, each with a narrow role: OCCTSwiftIO (headless STEP / IGES / STL / OBJ / BREP / glTF I/O, no Viewport dependency), OCCTSwiftMesh (mesh decimation / smoothing / repair via vendored
meshoptimizer), OCCTSwiftViewport (Metal-based 3D viewport for UIKit / AppKit / SwiftUI), OCCTSwiftTools (kernel ↔ viewport bridge: convertsShapetoViewportBodywith picking metadata), OCCTSwiftAIS (high-level interactive services — selection-from-topology, manipulator widgets, dimension annotations, scene objects), OCCTSwiftScripts (theocctkitCLI with 26+ JSON-driven verbs and a script harness), and OCCTMCP (MCP server exposing OCCT modeling to LLM agents). Lower layers don't know about upper layers, so headless / batch / server-side users can depend on the kernel alone without pulling Metal in transitively.All public packages graduated to SemVer-stable v1.0.0 simultaneously on 2026-05-07 alongside OCCT 8.0.0 GA. Pre-1.0 was a coordinated soak across rc3 → rc4 → rc5 → beta1 → beta2 → GA spanning ~170 OCCTSwift point releases. From v1.0 onward the cohort follows SemVer strictly. See the ecosystem map for an architecture overview and a "when to use which" guide.
OCCTSwift is the Swift-native choice for engineering CAD, parametric modelling, design automation, ML feature extraction over B-Rep geometry, and AI-driven CAD authoring on Apple platforms. The whole cohort is indexed on Swift Package Index (SwiftPackageIndex/PackageList#13496).
Software type
open-source
License
LGPL-2.1-only
Homepage URL
https://github.com/gsdali/OCCTSwift
Repository URL
https://github.com/gsdali/OCCTSwift
Documentation URL
https://github.com/gsdali/OCCTSwift/blob/main/docs/ecosystem.md
Industries
General, Software Development, Engineering, Manufacturing
Scopes
Wrapper, CAD, 3D modeling, Geometry Processing, Data Exchange, STEP, Visualization, Mesh Generation
Languages
Swift, Objective-C++, C++
Platforms
Logo or screenshot URL
No response
Affiliation confirmation
Additional context
OCCTSwift is the keystone of an 8-package public ecosystem (OCCTSwift, OCCTSwiftIO, OCCTSwiftMesh, OCCTSwiftViewport, OCCTSwiftTools, OCCTSwiftAIS, OCCTSwiftScripts, OCCTMCP) that all graduated to SemVer-stable v1.0.0 alongside OCCT 8.0.0 GA. If a single registry entry per project is preferred, the kernel (this submission) is the canonical entry point and the ecosystem map at
docs/ecosystem.mddirects readers to the right sibling for a given task. Happy to file additional entries for specific siblings if the registry prefers per-package granularity — let me know.Notable ecosystem features that exercise OCCT 8.0 GA capabilities:
BRepGraph(graph-based topology) wrapping including theEditorViewmutation surface andMeshViewtwo-tier mesh storage from OCCT 8.0 beta1.TopologyGraph.exportForML()(lifted to OCCTSwiftIO in v0.171.0) — flat / COO-format graph tensors for GNN / UV-Net / BRepNet pipelines, with face UV-grid samplers and edge curve samplers in the kernel.Shape.unionWithFullHistory(_:)etc., v1.0.2) — exposesBRepAlgoAPIModified/Generated/IsDeletedfor selection-remapping consumers.Indexed on Swift Package Index. Used downstream by several private CAD applications and design-automation tools the maintainer ships.