Hello, I'm Chris, I'm the founder of nthState.

I'm a software engineer working mostly in augmented reality and AI — ARKit, RealityKit and Metal on iOS and visionOS, and a lot of Rust lately. Nearly everything I've worked on since 2001 is written up on my portfolio at www.chrisdavis.com, along with a CV.

I've started looking at what's next, contract or permanent — say hello on LinkedIn.

Recently:

• I made PonyTales a 3D world for children that runs in a browser and as a native iOS App — Three.js on web, RealityKit and Metal on iOS, over one shared game core written in Rust, see www.ponytales.com
• I made Jailercise a set of AI-generated jailbirds who coach you through a workout, built on a generative pipeline that takes a character bible through to finished reels, see jailercise.com
• I wrote Rearranging Radio a step-by-step formula guide for the UK amateur radio Foundation, Intermediate and Full Licence exams

Popular Projects:

• I made Haptrix A macOS tool to let you visually design Haptics for iOS, see www.haptrix.com
• I made GestureKit the framework behind Gesture Composer, a visionOS App to let you create custom hand gestures for the Vision Pro, see www.gesturecomposer.com

I've made a collection of modifiers for SwiftUI:

• Stroke Extensions When you want to put elements on a Path of any Shape
• Curtain Raiser A Shader effect for animating a view
• Preview Color Blindness Preview SwiftUI views with different color blindnesses
• Path Sub-Divide Split a Path into more sections
• Path Elements Iterate the elements in a Path
• Masked Blur Masked Blur
• Shape Warp Warp a shape with a seed
• Chromatic Aberration Change RGB values in a View
• Claymorphic Kit A Claymorphic view style
• Copy to Points Idea from Houdini, copying Views to points

I'm interested in Augmented Reality (AR):

• Climb Designer - Bouldering Route Setting in AR (ARKit), write-up
• jARws - AR Version of that scene from Back to the Future, write-up
• Gesture Composer - Creating Custom Hand Gestures for visionOS Apps (ARKit, RealityKit), write-up
• RobotKit - Augmented Reality Testing Framework that controls a Robot (ARKit)

I'm interested in Accessibility

• DesignReviewToolkit - Extract Accessibility and Style information and present as an image from SwiftUI views

I've made games

• Trainwreck - A Unity game where the goal is to keep as many trains on the track at once
• Duel - A SpriteKit tvOS game where you need to shoot the bad cowboy

I'm interested in creating Hardware & Software:

• Blender Hardware Interface Controlling Blender with a Custom Controller
• CueBuddy CueBuddy a Digital Snooker Cue (Pool Cue) extension
• Laser Morse I'm fascinated by Verilog

I'm playing with SourceKit to analyse Source Code

• Product Analysis Checking if code is implemented

I have a course:

• Photoshop with Javascript How to use Javascript inside of Photoshop

I also use Metal:

• Curved Shader similar to Animal Crossing Rendering
• GPU Video Effects Processing video frames on tvOS
• I wrote the original Camera effect for the Lapse Camera App

I also like CI/CD:

• Validate an Xcode Project is sorted GitHub Action to Validate Xcode project sorting
• Upload TestFlight Release Notes GitHub Action to upload TestFlight Release Notes
• Inclusive Copyrighting GitHub Action to check for inclusive copy in certain file types
• Swift Acknowledgements GitHub Action to generate a Plist of all LICENSE files in your used Swift Packages
• TestFlight Build Size Chart Generator GitHub Action to generate a chart of your TestFlight build sizes over time

Here's a collection of tools to help you debug in Xcode

• LLDBInit - extensions for Xcode

I like procedural generation

• Vector Flow A procedural vector graphic tool for macOS/iPadOS written in SwiftUI

I like Audio

• Smagic for the Teenage Engineering OP-1 I connected an iOS App to the OP-1 midi port, I ❤️ Teenage Engineering
• Phonique I made a macOS App to create and export AVAudioEngine graphs and accompanying source code.

I wish I had invented VIM

• VIM Tips A collection of VIM tips I made, automated the video creation

Videos

• Youtube A collection of videos from projects

You can find more projects on GitHub, and the full write-ups on my portfolio at www.chrisdavis.com.

If you want to get in contact, find me on LinkedIn, or send me a message.