Hi,
I've tried to implement collision detection between the left index finger through a sphere and a simple 3D rectangle box. The sphere of my left index finger goes through the object, but no collision seems to take place. What am I missing?
Thank you very much for your consideration!
Below is my code;
App.swift
import SwiftUI
@main
private struct TrackingApp: App {
public init() {
...
}
public var body: some Scene {
WindowGroup {
ContentView()
}
ImmersiveSpace(id: "AppSpace") {
ImmersiveView()
}
}
}
ImmersiveView.swift
import SwiftUI
import RealityKit
struct ImmersiveView: View {
@State private var subscriptions: [EventSubscription] = []
public var body: some View {
RealityView { content in
/* LEFT HAND */
let leftHandIndexFingerEntity = AnchorEntity(.hand(.left, location: .
let leftHandIndexFingerSphere = ModelEntity(mesh: .generateSphere(radius: 0.01), materials: [SimpleMaterial(color: .orange, isMetallic: false)])
leftHandIndexFingerEntity.addChild(leftHandIndexFingerSphere)
leftHandIndexFingerEntity.generateCollisionShapes(recursive: true)
leftHandIndexFingerEntity.components[CollisionComponent.self] = CollisionComponent(shapes: [.generateSphere(radius: 0.01)])
leftHandIndexFingerEntity.name = "LeftHandIndexFinger"
content.add(leftHandIndexFingerEntity)
/* 3D RECTANGLE*/
let width: Float = 0.7
let height: Float = 0.35
let depth: Float = 0.005
let rectangleEntity = ModelEntity(mesh: .generateBox(size: [width, height, depth]), materials: [SimpleMaterial(color: .red.withAlphaComponent(0.5), isMetallic: false)])
rectangleEntity.transform.rotation = simd_quatf(angle: -.pi / 2, axis: [1, 0, 0])
let rectangleAnchor = AnchorEntity(world: [0.1, 0.85, -0.5])
rectangleEntity.generateCollisionShapes(recursive: true)
rectangleEntity.components[CollisionComponent.self] = CollisionComponent(shapes: [.generateBox(size: [width, height, depth])])
rectangleEntity.name = "Rectangle"
rectangleAnchor.addChild(rectangleEntity)
content.add(rectangleAnchor)
/* Collision Handling */
let subscription = content.subscribe(to: CollisionEvents.Began.self, on: rectangleEntity) { collisionEvent in
print("Collision detected between \(collisionEvent.entityA.name) and \(collisionEvent.entityB.name)")
}
subscriptions.append(subscription)
}
}
}
