Update: As of iOS 11.3 (aka “ARKit 1.5”), there is a difference between adding an ARAnchor to the session (and then associating SceneKit content with it through ARSCNViewDelegate callbacks) and just placing content in SceneKit space. When you add an anchor to the session, you’re telling ARKit that a certain point in world space is … Read more
ARKit, RealityKit and SceneKit frameworks use 4 x 4 Transformation Matrices to translate, rotate, scale and shear 3D objects (just like simd_float4x4 matrix type). Let’s see how these matrices look like. In 3D Graphics we often use a 4×4 Matrix with 16 useful elements. The Identity 4×4 Matrix is as following: Between those sixteen elements … Read more
ARKit – Apply CIFilter to a specific vertices of ARFaceAnchor
Updated: October 08, 2022. TL;DR This post is not only about RealityKit, SceneKit & Metal, but also about related APIs and USD files. RealityKit 2.0 RealityKit (and RealityFoundation) is the youngest SDK in Apple family of rendering technologies. This high-level framework was released in 2019. RealityKit is made for AR / VR projects, has simplified … Read more
Updated: June 07, 2022. TL;DR ARAnchor ARAnchor is an invisible null-object that can hold a 3D model at anchor’s position in a virtual space. Think of ARAnchor just like it’s a transform node with local axis (you can translate, rotate and scale it) for your model. Every 3D model has a pivot point, right? So … Read more
Updated: June 09, 2022. usdzconvert command in Xcode 14, 13, 12, 11 In macOS Ventura, Monterey, Big Sur and Catalina USDZ converter has a rich set of commands and supports more input formats for conversion than previous version. But before using it you need to download USDZ Tools. And don’t forget to setup a global … Read more