Add 3D Model in iOS | Swift 3D Model Tutorial | Easiest Method

  How to Add a 3D Model of a Product in Swift 5


Adding a 3D model of a product in Swift 5 can be done using SceneKit, RealityKit, or ARKit, depending on whether you want to display it in a regular app or an augmented reality (AR) environment. This guide will walk you through the process step by step.


post: https://www.linkedin.com/posts/hiren-shiyal-6a610322a_iosdevelopment-scenekit-3drendering-activity-7309619601242255361-AzY-?utm_source=share&utm_medium=member_desktop&rcm=ACoAADlTBB4BJqflXmQu4lapJ_9waYGGt-k_86w


 Prerequisites

- Xcode installed (latest version recommended)

- Basic knowledge of Swift and iOS development

- A 3D model file in .usdz, .scn, .obj, or .dae format


---


 1. Setting Up the Project

1. Open Xcode and create a new project.

2. Select App and choose SwiftUI or Storyboard.

3. Ensure SceneKit or RealityKit is enabled if needed.


---


 2. Importing the 3D Model


 Using SceneKit

1. Drag and drop the 3D model (.scn or .dae) into the Xcode project.

2. Open ViewController.swift and import SceneKit:

   

   swift

   import SceneKit

   

3. Create an SCNView and load the 3D model:

   

   swift

   class ViewController: UIViewController {

       override func viewDidLoad() {

           super.viewDidLoad()

           

           let sceneView = SCNView(frame: self.view.bounds)

           sceneView.scene = SCNScene(named: "product.scn")

           sceneView.allowsCameraControl = true

           

           self.view.addSubview(sceneView)

       }

   }

   


 Using RealityKit

1. Drag a .usdz file into your project.

2. Import RealityKit in ViewController.swift:

   

   swift

   import RealityKit

   

3. Load and display the model:

   

   swift

   class ViewController: UIViewController {

       override func viewDidLoad() {

           super.viewDidLoad()

           

           let arView = ARView(frame: view.bounds)

           view.addSubview(arView)

           

           let modelEntity = try! Entity.loadModel(named: "product")

           let anchorEntity = AnchorEntity(world: SIMD3<Float>(0, 0, -1))

           anchorEntity.addChild(modelEntity)

           

           arView.scene.anchors.append(anchorEntity)

       }

   }

   


---


 3. Adding Interactions


 Enabling User Interaction in SceneKit


swift

let tapGesture = UITapGestureRecognizer(target: self, action: selector(handleTap(_:)))

sceneView.addGestureRecognizer(tapGesture)


@objc func handleTap(_ gestureRecognize: UITapGestureRecognizer) {

    let location = gestureRecognize.location(in: sceneView)

    let hitTest = sceneView.hitTest(location, options: nil)

    if let node = hitTest.first?.node {

        print("Tapped on: \(node.name ?? "Unknown")")

    }

}



 Enabling User Interaction in RealityKit


swift

let tapGesture = UITapGestureRecognizer(target: self, action: selector(handleTap(_:)))

arView.addGestureRecognizer(tapGesture)


@objc func handleTap(_ recognizer: UITapGestureRecognizer) {

    let location = recognizer.location(in: arView)

    let results = arView.hitTest(location)

    if let entity = results.first?.entity {

        print("Tapped on: \(entity.name)")

    }

}



---


 4. Adding Animations


 Rotating a 3D Model in SceneKit


swift

let rotation = SCNAction.rotateBy(x: 0, y: CGFloat.pi, z: 0, duration: 2)

node.runAction(SCNAction.repeatForever(rotation))



 Rotating a 3D Model in RealityKit


swift

let rotation = Transform(rotation: simd_quatf(angle: .pi, axis: [0,1,0]))

entity.move(to: rotation, relativeTo: entity, duration: 2)



---


 5. Integrating with ARKit


1. Enable ARKit in Info.plist by adding:

   xml

   <key>NSCameraUsageDescription</key>

   <string>We need camera access for AR experience.</string>

   

2. Modify ViewController.swift:

   

   swift

   import ARKit

   

   class ViewController: UIViewController {

       override func viewDidLoad() {

           super.viewDidLoad()

           

           let arView = ARView(frame: view.bounds)

           view.addSubview(arView)

           

           let config = ARWorldTrackingConfiguration()

           arView.session.run(config)

           

           let modelEntity = try! Entity.loadModel(named: "product")

           let anchor = AnchorEntity(plane: .horizontal)

           anchor.addChild(modelEntity)

           

           arView.scene.anchors.append(anchor)

       }

   }

   


---


 Conclusion


With SceneKit, RealityKit, and ARKit, you can effectively display and interact with 3D models in Swift 5. This guide provides a foundation for adding and manipulating 3D products in your iOS apps.



dm on @hiren_syl for iOS demo code.


#Swift5 #iOSDevelopment #SceneKit #RealityKit #ARKit #3DModeling #iOSApp #SwiftTutorial #AppDevelopment #AugmentedReality

• Swift 5 3D Model

• Add 3D Model in iOS

• SceneKit RealityKit ARKit

• iOS 3D Model Integration

• Swift 3D Model Tutorial

• How to add a 3D model in Swift 5

• Display 3D product in iOS app

• Best way to add 3D model in Swift

• SceneKit vs RealityKit for 3D models

• ARKit 3D model placement tutorial

• Import 3D Model Swift

• Swift SceneKit Example

• Swift RealityKit Tutorial

• Swift ARKit Guide

• 3D Model App Development


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