我创建了一个效果很好的 AR 应用程序,但我不太喜欢每次在镜头前生成的物体。我更愿意让它们在这个区域中生成,距离相机更远,并面向预定的方向。例如,我希望每次都在同一个停车场空间中生成一辆车,因此当我走进停车场时,无论我从哪个方向过来,我都可以看到停在那里的汽车,就像我离开它一样。
如何根据对象的位置生成对象?我认为这与用纬度和经度坐标替换平面检测有关,但我不知道如何解决这个问题。 非常感谢任何帮助!
import UIKit
import RealityKit
import ARKit
class ViewController: UIViewController {
@IBOutlet var arView: ARView!
override func viewDidLoad() {
super.viewDidLoad()
arView.session.delegate = self
showModel()
overlayCoachingView()
setupARView()
arView.addGestureRecognizer(UITapGestureRecognizer(target: self, action: #selector(handleTap(recognizer:))))
}
func showModel(){
let anchorEntity = AnchorEntity(plane: .horizontal, minimumBounds:[0.2, 0.2])
let entity = try! Entity.loadModel(named: "COW_ANIMATIONS")
entity.setParent(anchorEntity)
arView.scene.addAnchor(anchorEntity)
}
func overlayCoachingView () {
let coachingView = ARCoachingOverlayView(frame: CGRect(x: 0, y: 0, width: arView.frame.width, height: arView.frame.height))
coachingView.session = arView.session
coachingView.activatesAutomatically = true
coachingView.goal = .horizontalPlane
view.addSubview(coachingView)
}
// Load the "Box" scene from the "Experience" Reality File
// let boxAnchor = try! Experience.loadBox()
// Add the box anchor to the scene
//arView.scene.anchors.append(boxAnchor)
func setupARView(){
arView.automaticallyConfigureSession = false
let configuration = ARWorldTrackingConfiguration()
configuration.planeDetection = [.horizontal, .vertical]
configuration.environmentTexturing = .automatic
arView.session.run(configuration)
}
//object placement
@objc
func handleTap(recognizer: UITapGestureRecognizer){
let location = recognizer.location(in:arView)
let results = arView.raycast(from: location, allowing: .estimatedPlane, alignment: .horizontal)
if let firstResult = results.first {
let anchor = ARAnchor(name: "COW_ANIMATIONS", transform: firstResult.worldTransform)
arView.session.add(anchor: anchor)
} else {
print("Object placement failed - couldn't find surface.")
}
}
func placeObject(named entityName: String, for anchor: ARAnchor) {
let entity = try! ModelEntity.loadModel(named: entityName)
entity.generateCollisionShapes(recursive: true)
arView.installGestures([.rotation, .translation], for: entity)
let anchorEntity = AnchorEntity(anchor: anchor)
anchorEntity.addChild(entity)
arView.scene.addAnchor(anchorEntity)
}
}
extension ViewController: ARSessionDelegate {
func session( session: ARSession, didAdd anchors: [ARAnchor]) {
for anchor in anchors {
if let anchorName = anchor.name, anchorName == "COW_ANIMATIONS" {
placeObject(named: anchorName, for: anchor)
} }
}
}
对于地理位置,Apple 制作了 ARGeoTrackingConfiguration 以及相应的 ARGeoAnchors。
let location = CLLocationCoordinate2D(latitude: -18.9137, longitude: 47.5361)
let geoAnchor = ARGeoAnchor(name: "Tana", coordinate: location, altitude: 1250)
arView.session.add(anchor: geoAnchor)
let realityKitAnchor = AnchorEntity(anchor: geoAnchor)
arView.scene.anchors.append(realityKitAnchor)
目前正在当前城市和地区工作。
您还可以使用 getGeoLocation(forPoint:completionHandler:) 实例方法将框架本地坐标系中的位置转换为 GPS 纬度、经度和海拔。
arView.session.getGeoLocation(forPoint: xyzWorld) { (coord, alt, error) in
let anchor = ARGeoAnchor(coordinate: coord, altitude: alt)
}
您好,您的问题解决了吗?