Matt Pfeiffer Matt54

Software Engineer on Apple Platforms - I write a lot of code and some music too

Matt54 / GameKitManager.swift

Created September 14, 2024 22:33

Trying to figure out the boilerplate for a simple GameKit implementation

	import GameKit
	import SwiftUI

	struct GameTestView: View {
	@StateObject private var gameKitManager = GameKitManager()
	@State private var timer: Timer?

	var body: some View {
	VStack {
	Text("Score: \(gameKitManager.score)")

Matt54 / TargetPracticeView.swift

Created September 14, 2024 14:28

RealityView where users practice target shooting by detecting finger gun gestures and using ray casting to hit virtual targets

	import SwiftUI
	import RealityKit
	import ARKit
	import HandVector

	struct TargetPracticeView: View {
	@State var jointPositions: [HandSkeleton.JointName: SIMD3<Float>] = [:]
	@State var targets: [Target] = []

	@State var laserBeamEntity: ModelEntity?

Matt54 / HandTrackingRaycastView.swift

Created September 14, 2024 05:11

RealityView that detects finger gun gestures and uses ray casting for hit detection

	import SwiftUI
	import RealityKit
	import ARKit
	import HandVector

	struct HandTrackingRaycastView: View {
	@State var jointPositions: [HandSkeleton.JointName: SIMD3<Float>] = [:]
	@State var sphereEntity: ModelEntity?
	@State var laserBeamEntity: ModelEntity?
	@State var gunEntity: ModelEntity?

Matt54 / HandTrackingRaycastView.swift

Created September 14, 2024 03:19

RealityView that detects finger gun gestures and uses ray casting to interact with virtual objects.

	import SwiftUI
	import RealityKit
	import ARKit
	import HandVector

	struct HandTrackingRaycastView: View {
	@State var jointPositions: [HandSkeleton.JointName: SIMD3<Float>] = [:]
	@State var sphereEntity: ModelEntity?
	@State var laserBeamEntity: ModelEntity?
	@State var gunEntity: ModelEntity?

Matt54 / HandTrackingRaycastView.swift

Created September 14, 2024 00:41

RealityView with raycasting from the index finger to a sphere, showing a color change on hit

	import SwiftUI
	import RealityKit
	import ARKit

	struct HandTrackingRaycastView: View {
	@State var jointPositions: [HandSkeleton.JointName: SIMD3<Float>] = [:]
	@State var sphereEntity: ModelEntity?
	@State var debugCylinderEntity: ModelEntity?
	let sphereRadius: Float = 0.1

Matt54 / TileFloorSinglePlaneRealityView.swift

Created September 5, 2024 00:59

RealityView creating floor tile pattern using scale of textureCoordinateTransform

	import SwiftUI
	import RealityKit

	#Preview("TileFloorSinglePlaneRealityView") {
	TileFloorSinglePlaneRealityView()
	}

	struct TileFloorSinglePlaneRealityView: View {
	var body: some View {
	let gridSize = 1

Matt54 / TileFloorRealityView.swift

Created September 4, 2024 02:45

Texture grid RealityView

	import SwiftUI
	import RealityKit

	// Volume example
	struct TileFloorRealityView: View {
	let gridSize = 8

	var body: some View {
	GeometryReader3D { proxy in
	RealityView { content in

Matt54 / PhysicallyBasedMaterialPickerView2.swift

Created September 1, 2024 04:45

RealityView for testing the various properties of PhysicallyBasedMaterial

	import RealityKit
	import SwiftUI

	struct PhysicallyBasedMaterialPickerView2: View {
	@State var entity: ModelEntity?
	@State var baseColorTextureResource: TextureResource?
	@State var materialParameters: PhysicallyBasedMaterialParameters = PhysicallyBasedMaterialParameters()

	var body: some View {
	RealityView { content in

Matt54 / PhysicallyBasedMaterialPickerView.swift

Created August 30, 2024 03:07

RealityView for visualizing the different properties of PhysicallyBasedMaterial

	import RealityKit
	import SwiftUI

	struct PhysicallyBasedMaterialPickerView: View {
	@State var entity: ModelEntity?
	@State var materialParameters: PhysicallyBasedMaterialParameters = PhysicallyBasedMaterialParameters()

	func generateEntity() -> ModelEntity {
	let meshResource = MeshResource.generateSphere(radius: 0.2)
	return ModelEntity(mesh: meshResource, materials: [getMaterial()])

Matt54 / LowLevelMeshRevealView.swift

Created August 26, 2024 00:10

RealityView loading a USDZ model, extracting a LowLevelMesh from it, and then animating a warp reveal of it's vertices

	import SwiftUI
	import RealityKit
	import Metal

	struct LowLevelMeshRevealView: View {
	@State var entity: ModelEntity?
	@State var lowLevelMesh: LowLevelMesh?
	@State var originalVertices: [VertexData] = []
	@State var timer: Timer?
	@State var isForward: Bool = true