visionOS: An Introduction

Nov 21 2023 · Swift 5.9, visionOS 1.0 beta, Xcode 15

Lesson 03: Building an Immersive View

Demo Part 2

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Carry on with the build from lesson 3, part 1.

let orbit = OrbitAnimation(duration: 20.0,
axis: SIMD3<Float>(x: 0.1, y: 1.0, z: 0.0),
startTransform: scene.transform,
spinClockwise: false,
orientToPath: true,
rotationCount: 1.0,
bindTarget: .transform,
repeatMode: .repeat)

if let animation = try? AnimationResource.generate(with: orbit) {
  scene.playAnimation(animation)
}

scene.orientation = simd_quatf(angle: Float.pi/4, axis: [-0.5, 0.0, 0.0])

RealityView { content in
    guard let resource = try? await TextureResource(named: "skyView") else {
      return
    }
    var material = UnlitMaterial()
    material.color = .init(texture: .init(resource))

    let entity = Entity()
    entity.components.set(ModelComponent(mesh: .generateSphere(radius: 1000), materials: [material]
    ))
    // point the texture inwards
    entity.scale *= .init(x: -1, y: 1, z: 1)

    content.add(entity)
}


guard let resource = try? await EnvironmentResource(named: "Sunlight") else { return }
let iblComponent = ImageBasedLightComponent(source: .single(resource), intensityExponent: 2.0)
scene.components.set(iblComponent)
scene.components.set(ImageBasedLightReceiverComponent(imageBasedLight: scene))
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