gsdali/occtswifttools

What it does

import OCCTSwift
import OCCTSwiftTools

let box = Shape.box(width: 10, height: 5, depth: 3)!
let body = ViewportBody.from(box)!     // ← this lives here

Plus one-shot file loaders:

let bodies = try CADFile.loadSTEP(at: stepURL)
let mesh   = try CADFile.loadSTL(at: stlURL)

Architecture position

OCCTSwiftAIS          (selection / manipulator / dimensions; sibling repo)
       ↑
OCCTSwiftTools        ← this repo
       ↑      ↑
OCCTSwift   OCCTSwiftViewport
(B-Rep)     (Metal renderer)

OCCTSwiftTools is the only repo that depends on both sibling kernels. OCCTSwiftAIS depends on this; the two kernels stay decoupled from each other.

Converters

Per-domain helpers that turn an OCCT-or-raw input into a ViewportBody:

| Helper | Input | Output body shape | |---|---|---| | CADFileLoader.shapeToBodyAndMetadata | OCCTSwift.Shape | Triangulated mesh + picking metadata | | CurveConverter.curve2DToBody / curve3DToBody | Curve2D / Curve3D | Edge polyline (no mesh) | | SurfaceConverter | Surface | Triangulated surface mesh | | WireConverter.wireToBody | Wire | Edge polyline | | PointConverter.pointsToBody | [SIMD3<Float>] | Point list (no mesh, no edges) |

Note on PointConverter: produces a ViewportBody with primitiveKind == .point, drawn by the point-cloud rendering pipeline added in OCCTSwiftViewport v1.0.2 (issue #28). pointRadius and perPointColors are now carried through to the body's pointRadius and vertexColors fields; consumers (e.g. OCCTMCP's add_scene_primitive(pointCloud)) can lift their previous sphere-compound caps and render tens of thousands of points cleanly.

Installation

.package(url: "https://github.com/gsdali/OCCTSwiftTools.git", from: "0.1.0"),

Supported platforms

| Platform | Status | |---|---| | macOS 15+ arm64 | Supported | | iOS 18+ device + simulator arm64 | Supported | | visionOS 1+ device + simulator arm64 | Supported | | tvOS 18+ device + simulator arm64 | Supported |

The platform floor is the higher of OCCTSwift's (12.0 / 15.0) and OCCTSwiftViewport's (15.0 / 18.0).

Status

Active. Requires OCCTSwift ≥ v0.168.0 (for ImportProgress) and OCCTSwiftViewport ≥ v0.55.0 (for the GPU edge/vertex pick fields populated by shapeToBodyAndMetadata). See docs/CHANGELOG.md for release history and SPEC.md for the public API surface and roadmap.

License

LGPL 2.1 (matching OCCT). See LICENSE.

Package Metadata

Repository: gsdali/occtswifttools

Default branch: main

README: README.md