visionOS demonstrations

• This project is designed as a demonstration with the purpose of showcasing a diverse range of features and APIs related to app development for VisionOS
• The content is organized into several distinct parts, each focusing on different aspects. The series will be released incrementally after several iOS@Taipei meetup events.
• As of now, the project has progressed to Part III.

Part I:

• There's a Notes.md file that includes the introductions regards to developing the app for the visionOS.
• Other demonstrations are focused on the features and APIs for the Views and common UIs
  • ToolsView.swift:
    • The demo shows a potential way to create a button group with varying z offset.
    • You can extend the usage to create some control bar that is similar to the native keyboard in VisionOS.
  • WindowBasedDemo:
    • The glass background effect and z-offset are only supported from the visionOS instead of iOS.
    • Therefore, I made this demonstration to show a potential way to apply some features with these case via the ViewModifier.

Part II:

• Focus on features and APIs related to working with 3D models.
  • Model3DAndRealityViewDemo:
    • This demonstration highlights the differences between Model3D and RealityView.
    • There're 2 previews in this demonstration. The other one is a simple demo about the potential usage for the Model3D since we control it in detail.
  • InteractWithEntityDemo:
    • It shows 2 different ways to add the entities to the RealityView:
      • add the entire scene with all entities inside the scene
      • add entities separately, so we can decide which entities we want to add instead all of them in a usda file
    • It also shows the way how we can interact with entities, and how to define which entity is allowed users to interact with
      • In this part, you'll find out that the venus entity is not interactable. It's because I didn't add the collision component to it intentionally to mention what we should do if we want an entity to be touchable for users.
  • AttachmentDemo:
    • To show how to add an attachment to an entity.
    • Thanks to the discussion from the sharing session, we added a gesture to the entity in this demonstration to check the behavior of attachment. Please try moving the entity, and you'll notice that the attachment moves with it.
  • AnimationDemo:
    • To demonstrate how to apply animation to an entity in RealityView.

Part III

• Introduce features of 3D space drawing.
  • Create3DPlanesDemo:
    • It's a pre-practice demonstration for the ThreeDimensionCanvasDemo.
    • In this demonstration, I show how to create a plane in visionOS, which is used for making strokes in the subsequent ThreeDimensionCanvasDemo.

    Simplest Plate: Triangle	Create a shape with triangles

  • ThreeDimensionCanvasDemo:
    • Demonstrations for showing how to draw lines and points in a spatial space, which include:
      • Create an entity without a USDZ file
      • SpatialEventGesture
      • Update mesh for an existing entity
      • Crate strokes in a spatial space
    • Also, I showed how to use multiple windows to create a separate control panel

    Points	Strokes

Part IV:

• Immersive Space
  • Building on the implementation from Part III, extend it to use immersive space.
  • Additionally, improve the implementation of rendering the stroke in the Part IV demonstration.

ImmersiveSpace.mov