SwiftSCAD is a library that allows you to create 3D and 2D CAD models in Swift. It acts as a preprocessor for OpenSCAD, generating .scad files that can be previewed and rendered using the OpenSCAD application. This offers a more convenient API, breaking away from the limitations of the OpenSCAD language.
SwiftSCAD runs on macOS, Windows and Linux.
Create a new Swift executable package:
$ mkdir My3DGadget
$ cd My3DGadget
$ swift package init --type executable
Add SwiftSCAD as a dependency for your package in Package.swift:
let package = Package(
name: "My3DGadget",
platforms: [.macOS(.v14)], // Needed on macOS
dependencies: [
.package(url: "https://github.com/tomasf/SwiftSCAD.git", branch: "main"),
],
targets: [
.executableTarget(name: "My3DGadget", dependencies: ["SwiftSCAD"])
]
)
In your code, import SwiftSCAD, create geometry and save it:
import SwiftSCAD
Box([10, 10, 5])
.subtracting {
Sphere(diameter: 10)
.translated(z: 5)
}
.save(to: "gadget.scad")Run your code using swift run to generate the .scad file. Open it in OpenSCAD to preview your model. For the best experience, hide the editor view using View > Hide Editor and enable Design > Automatic Reload and Preview. With this in place, OpenSCAD will reload automatically every time you run your code after making changes to the model.
Box([10, 20, 5], center: .y)
.rotated(y: -20°, z: 45°)
.save(to: "~/Desktop/examples/example1.scad")
Circle(diameter: 10)
.withFacets(count: 3)
.translated(x: 2)
.scaled(x: 2)
.repeated(in: 0°..<360°, count: 5)
.rounded(amount: 1)
.extruded(height: 5, twist: -20°)
.subtracting {
Cylinder(bottomDiameter: 1, topDiameter: 5, height: 20)
.translated(y: 2, z: -7)
.rotated(x: 20°)
.highlighted()
}
.save(to: "example2.scad")
struct Star: Shape2D {
let pointCount: Int
let radius: Double
let pointRadius: Double
let centerSize: Double
var body: any Geometry2D {
Circle(diameter: centerSize)
.adding {
Circle(radius: max(pointRadius, 0.001))
.translated(x: radius)
}
.convexHull()
.repeated(in: 0°..<360°, count: pointCount)
}
}
Star(pointCount: 5, radius: 10, pointRadius: 1, centerSize: 4)
.adding {
Star(pointCount: 6, radius: 8, pointRadius: 0, centerSize: 2)
.translated(x: 20)
}
.save(to: "example3.scad")
let path = BezierPath2D(startPoint: .zero)
.addingCubicCurve(controlPoint1: [10, 65], controlPoint2: [55, -20], end: [60, 40])
Star(pointCount: 5, radius: 10, pointRadius: 1, centerSize: 4)
.usingDefaultFacets()
.extruded(along: path, convexity: 4)
.usingFacets(minAngle: 5°, minSize: 1)
.save(to: "example4.scad")
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