ARKit - 未放置对象
ARKit - Object not placed
我正在尝试使用 ARKit 构建放置家具的 AR 应用程序,
我的项目中有 .scn
椅子及其 PNG 纹理,我的应用程序应该检测水平面,然后当用户点击时,对象将放置在被点击的位置。
但是我点击的时候对象没有放置。
ViewController:
import UIKit
import SceneKit
import ARKit
class ViewController: UIViewController {
@IBOutlet weak var sceneView: ARSCNView!
override func viewDidLoad() {
super.viewDidLoad()
addTapGestureToSceneView()
configureLighting()
}
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
setUpSceneView()
}
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(animated)
sceneView.session.pause()
}
func setUpSceneView() {
let configuration = ARWorldTrackingConfiguration()
configuration.planeDetection = .horizontal
sceneView.session.run(configuration)
sceneView.delegate = self
sceneView.debugOptions = [ARSCNDebugOptions.showFeaturePoints]
}
func configureLighting() {
sceneView.autoenablesDefaultLighting = true
sceneView.automaticallyUpdatesLighting = true
}
@objc func addShipToSceneView(withGestureRecognizer recognizer: UIGestureRecognizer) {
let tapLocation = recognizer.location(in: sceneView)
let hitTestResults = sceneView.hitTest(tapLocation, types: .existingPlaneUsingExtent)
guard let hitTestResult = hitTestResults.first else { return }
let translation = hitTestResult.worldTransform.translation
let x = translation.x
let y = translation.y
let z = translation.z
guard let scene = SCNScene(named: "art.scnassets/chair.scn"),
let shipNode = scene.rootNode.childNode(withName: "chair_DIFFUSE", recursively: false)
else {
print("Failed to render")
return
}
shipNode.position = SCNVector3(x,y,z)
sceneView.scene.rootNode.addChildNode(shipNode)
}
func addTapGestureToSceneView() {
let tapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(ViewController.addShipToSceneView(withGestureRecognizer:)))
sceneView.addGestureRecognizer(tapGestureRecognizer)
}
}
extension float4x4 {
var translation: float3 {
let translation = self.columns.3
return float3(translation.x, translation.y, translation.z)
}
}
extension UIColor {
open class var transparentLightBlue: UIColor {
return UIColor(red: 90/255, green: 200/255, blue: 250/255, alpha: 0.50)
}
}
extension ViewController: ARSCNViewDelegate {
func renderer(_ renderer: SCNSceneRenderer, didAdd node: SCNNode, for anchor: ARAnchor) {
// 1
guard let planeAnchor = anchor as? ARPlaneAnchor else { return }
// 2
let width = CGFloat(planeAnchor.extent.x)
let height = CGFloat(planeAnchor.extent.z)
let plane = SCNPlane(width: width, height: height)
// 3
plane.materials.first?.diffuse.contents = UIColor.transparentLightBlue
// 4
let planeNode = SCNNode(geometry: plane)
// 5
let x = CGFloat(planeAnchor.center.x)
let y = CGFloat(planeAnchor.center.y)
let z = CGFloat(planeAnchor.center.z)
planeNode.position = SCNVector3(x,y,z)
planeNode.eulerAngles.x = -.pi / 2
// 6
node.addChildNode(planeNode)
}
func renderer(_ renderer: SCNSceneRenderer, didUpdate node: SCNNode, for anchor: ARAnchor) {
// 1
guard let planeAnchor = anchor as? ARPlaneAnchor,
let planeNode = node.childNodes.first,
let plane = planeNode.geometry as? SCNPlane
else { return }
// 2
let width = CGFloat(planeAnchor.extent.x)
let height = CGFloat(planeAnchor.extent.z)
plane.width = width
plane.height = height
// 3
let x = CGFloat(planeAnchor.center.x)
let y = CGFloat(planeAnchor.center.y)
let z = CGFloat(planeAnchor.center.z)
planeNode.position = SCNVector3(x, y, z)
}
}
因此,当我点击放置对象时,我会打印 "failed to render",而控制台中不会打印任何其他内容!
所以在对代码进行了一些调整之后,我用以下几行代码解决了这个问题:
// Create a new scene
let scene = SCNScene(named: "art.scnassets/chair.scn")!
let node = scene.rootNode.childNode(withName: "chair", recursively: true)!
node.position = SCNVector3(x,y,z)
scene.rootNode.addChildNode(node)
//shipNode.position = SCNVector3(x,y,z)
sceneView.scene = scene
而不是:
guard let scene = SCNScene(named: "art.scnassets/chair.scn"),
let shipNode = scene.rootNode.childNode(withName: "chair_DIFFUSE", recursively: false)
else {
print("Failed to render")
return
}
shipNode.position = SCNVector3(x,y,z)
sceneView.scene.rootNode.addChildNode(shipNode)
我正在尝试使用 ARKit 构建放置家具的 AR 应用程序,
我的项目中有 .scn
椅子及其 PNG 纹理,我的应用程序应该检测水平面,然后当用户点击时,对象将放置在被点击的位置。
但是我点击的时候对象没有放置。
ViewController:
import UIKit
import SceneKit
import ARKit
class ViewController: UIViewController {
@IBOutlet weak var sceneView: ARSCNView!
override func viewDidLoad() {
super.viewDidLoad()
addTapGestureToSceneView()
configureLighting()
}
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
setUpSceneView()
}
override func viewWillDisappear(_ animated: Bool) {
super.viewWillDisappear(animated)
sceneView.session.pause()
}
func setUpSceneView() {
let configuration = ARWorldTrackingConfiguration()
configuration.planeDetection = .horizontal
sceneView.session.run(configuration)
sceneView.delegate = self
sceneView.debugOptions = [ARSCNDebugOptions.showFeaturePoints]
}
func configureLighting() {
sceneView.autoenablesDefaultLighting = true
sceneView.automaticallyUpdatesLighting = true
}
@objc func addShipToSceneView(withGestureRecognizer recognizer: UIGestureRecognizer) {
let tapLocation = recognizer.location(in: sceneView)
let hitTestResults = sceneView.hitTest(tapLocation, types: .existingPlaneUsingExtent)
guard let hitTestResult = hitTestResults.first else { return }
let translation = hitTestResult.worldTransform.translation
let x = translation.x
let y = translation.y
let z = translation.z
guard let scene = SCNScene(named: "art.scnassets/chair.scn"),
let shipNode = scene.rootNode.childNode(withName: "chair_DIFFUSE", recursively: false)
else {
print("Failed to render")
return
}
shipNode.position = SCNVector3(x,y,z)
sceneView.scene.rootNode.addChildNode(shipNode)
}
func addTapGestureToSceneView() {
let tapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(ViewController.addShipToSceneView(withGestureRecognizer:)))
sceneView.addGestureRecognizer(tapGestureRecognizer)
}
}
extension float4x4 {
var translation: float3 {
let translation = self.columns.3
return float3(translation.x, translation.y, translation.z)
}
}
extension UIColor {
open class var transparentLightBlue: UIColor {
return UIColor(red: 90/255, green: 200/255, blue: 250/255, alpha: 0.50)
}
}
extension ViewController: ARSCNViewDelegate {
func renderer(_ renderer: SCNSceneRenderer, didAdd node: SCNNode, for anchor: ARAnchor) {
// 1
guard let planeAnchor = anchor as? ARPlaneAnchor else { return }
// 2
let width = CGFloat(planeAnchor.extent.x)
let height = CGFloat(planeAnchor.extent.z)
let plane = SCNPlane(width: width, height: height)
// 3
plane.materials.first?.diffuse.contents = UIColor.transparentLightBlue
// 4
let planeNode = SCNNode(geometry: plane)
// 5
let x = CGFloat(planeAnchor.center.x)
let y = CGFloat(planeAnchor.center.y)
let z = CGFloat(planeAnchor.center.z)
planeNode.position = SCNVector3(x,y,z)
planeNode.eulerAngles.x = -.pi / 2
// 6
node.addChildNode(planeNode)
}
func renderer(_ renderer: SCNSceneRenderer, didUpdate node: SCNNode, for anchor: ARAnchor) {
// 1
guard let planeAnchor = anchor as? ARPlaneAnchor,
let planeNode = node.childNodes.first,
let plane = planeNode.geometry as? SCNPlane
else { return }
// 2
let width = CGFloat(planeAnchor.extent.x)
let height = CGFloat(planeAnchor.extent.z)
plane.width = width
plane.height = height
// 3
let x = CGFloat(planeAnchor.center.x)
let y = CGFloat(planeAnchor.center.y)
let z = CGFloat(planeAnchor.center.z)
planeNode.position = SCNVector3(x, y, z)
}
}
因此,当我点击放置对象时,我会打印 "failed to render",而控制台中不会打印任何其他内容!
所以在对代码进行了一些调整之后,我用以下几行代码解决了这个问题:
// Create a new scene
let scene = SCNScene(named: "art.scnassets/chair.scn")!
let node = scene.rootNode.childNode(withName: "chair", recursively: true)!
node.position = SCNVector3(x,y,z)
scene.rootNode.addChildNode(node)
//shipNode.position = SCNVector3(x,y,z)
sceneView.scene = scene
而不是:
guard let scene = SCNScene(named: "art.scnassets/chair.scn"),
let shipNode = scene.rootNode.childNode(withName: "chair_DIFFUSE", recursively: false)
else {
print("Failed to render")
return
}
shipNode.position = SCNVector3(x,y,z)
sceneView.scene.rootNode.addChildNode(shipNode)