Create parametric 3D room scans with RoomPlan

// RoomCaptureView API - Scan & Process

import UIKit
import RoomPlan

class RoomCaptureViewController: UIViewController {

    var roomCaptureView: RoomCaptureView
    var captureSessionConfig: RoomCaptureSession.Configuration

   private func startSession() {
        roomCaptureView?.captureSession.run(configuration: captureSessionConfig)
     }
    
    private func stopSession() {
        roomCaptureView?.captureSession.stop()
	}
}

// RoomCaptureView API - Export

import UIKit
import RoomPlan

class RoomCaptureViewController: UIViewController {
  …
  func captureView(shouldPresent roomDataForProcessing: CapturedRoomData, error: Error?) -> Bool {
    // Optionally opt out of post processed scan results.
    return false
  }

  func captureView(didPresent processedResult: CapturedRoom, error: Error?) {
    // Handle final, post processed results and optional error.
    // Export processedResults
    …
    try processedResult.export(to: destinationURL)
    …
  }
}

import UIKit
import RealityKit
import RoomPlan
import ARKit

class ViewController: UIViewController {
    @IBOutlet weak var arView: ARView!
    var previewVisualizer: Visualizer!
    lazy var captureSession: RoomCaptureSession = {
        let captureSession = RoomCaptureSession()
        arView.session = captureSession.arSession
        return captureSession
    }()
    override func viewDidLoad() {
        super.viewDidLoad()
        captureSession.delegate = self
        // set up previewVisualizer
    }
}

// Getting live results and user instructions

extension ViewController: RoomCaptureSessionDelegate {

    func captureSession(_ session: RoomCaptureSession,
                        didUpdate room: CapturedRoom) {
        previewVisualizer.update(model: room)
    }
    
    func captureSession(_ session: RoomCaptureSession,
                   didProvide instruction: Instruction) {
        previewVisualizer.provide(instruction)
    }
}

// RoomBuilder
import UIKit
import RealityKit
import RoomPlan
import ARKit

class ViewController: UIViewController {
    
    @IBOutlet weak var arView: ARView!
    var previewVisualizer: Visualizer!

    // set up RoomBuilder
    var roomBuilder = RoomBuilder(options: [.beautifyObjects])
}

// RoomBuilder with the latest CapturedRoomData to generate final 3D CapturedRoom

extension ViewController: RoomCaptureSessionDelegate
{
    func captureSession(_ session: RoomCaptureSession, 
                        didEndWith data: CapturedRoomData, error: Error?)
    {
        if let error = error {
            print("Error: \(error)")
        }
        Task {
            let finalRoom = try! await roomBuilder.capturedRoom(from: data)
            previewVisualizer.update(model: finalRoom)
        }
    }
}

// CapturedRoom and export

public struct CapturedRoom: Codable, Sendable
{
    public let walls: [Surface]
    public let doors: [Surface]
    public let windows: [Surface]
    public let openings: [Surface]
    public let objects: [Object]

    public func export(to url: URL) throws

    // Surface definitions ...
    
    // Object definitions ...
}