what are coordinate spaces in iOS ?
Generated on 1/21/2025
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Coordinate spaces in iOS are tools used to specify positions relative to a particular frame of reference. In the context of Apple's platforms, different coordinate spaces are used to manage how content is positioned and rendered on the screen or in a 3D environment.
For example, in SwiftUI, there are local and global coordinate spaces. The local coordinate space refers to the current view's coordinate space, with the origin at the top left of the view. The global coordinate space refers to the window's coordinate space, with the origin at the top left of the window.
In VisionOS, a new immersive coordinate space was introduced, which fits alongside SwiftUI's existing coordinate spaces. The immersive space has its origin defined as the point on the ground below you, and it is used to create rich immersive experiences that extend beyond the window into the real world. This is particularly useful for applications that involve augmented reality or mixed reality, where precise positioning relative to the user's environment is crucial.
For more details, you can refer to the session Dive deep into volumes and immersive spaces (19:38).
Build compelling spatial photo and video experiences
Learn how to adopt spatial photos and videos in your apps. Explore the different types of stereoscopic media and find out how to capture spatial videos in your iOS app on iPhone 15 Pro. Discover the various ways to detect and present spatial media, including the new QuickLook Preview Application API in visionOS. And take a deep dive into the metadata and stereo concepts that make a photo or video spatial.
Platforms State of the Union
Discover the newest advancements on Apple platforms.
Optimize your 3D assets for spatial computing
Dive into an end-to-end workflow for optimized 3D asset creation. Discover best practices for optimizing meshes, materials, and textures in your digital content creation tool. Learn how to harness shader graph, baking, and material instances to enhance your 3D scene while optimizing performance. Take advantage of native tools to work more effectively with your assets and improve your app’s performance.
Build a spatial drawing app with RealityKit
Harness the power of RealityKit through the process of building a spatial drawing app. As you create an eye-catching spatial experience that integrates RealityKit with ARKit and SwiftUI, you’ll explore how resources work in RealityKit and how to use features like low-level mesh and texture APIs to achieve fast updates of the users’ brush strokes.
Render Metal with passthrough in visionOS
Get ready to extend your Metal experiences for visionOS. Learn best practices for integrating your rendered content with people’s physical environments with passthrough. Find out how to position rendered content to match the physical world, reduce latency with trackable anchor prediction, and more.
Discover Swift enhancements in the Vision framework
The Vision Framework API has been redesigned to leverage modern Swift features like concurrency, making it easier and faster to integrate a wide array of Vision algorithms into your app. We’ll tour the updated API and share sample code, along with best practices, to help you get the benefits of this framework with less coding effort. We’ll also demonstrate two new features: image aesthetics and holistic body pose.
Dive deep into volumes and immersive spaces
Discover powerful new ways to customize volumes and immersive spaces in visionOS. Learn to fine-tune how volumes resize and respond to people moving around them. Make volumes and immersive spaces interact through the power of coordinate conversions. Find out how to make your app react when people adjust immersion with the Digital Crown, and use a surrounding effect to dynamically customize the passthrough tint in your immersive space experience.
Create enhanced spatial computing experiences with ARKit
Learn how to create captivating immersive experiences with ARKit’s latest features. Explore ways to use room tracking and object tracking to further engage with your surroundings. We’ll also share how your app can react to changes in your environment’s lighting on this platform. Discover improvements in hand tracking and plane detection which can make your spatial experiences more intuitive.