我目前的应用程序可以检测明信片图片。一旦检测到,我会在其上放置一只狗的3D模型。问题是,该模型当前背部坐在明信片上,而不是它的脚。
有没有办法通过编程来旋转模型,使其脚站在明信片上?
class ViewController: UIViewController, ARSCNViewDelegate {
@IBOutlet var sceneView: ARSCNView!
override func viewDidLoad() {
super.viewDidLoad()
sceneView.delegate = self
}
//MARK-: WHERE I CONFIGURE MY APP TO DETECT AN IMAGE
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
let configuration = ARImageTrackingConfiguration()
guard let trackedImages = ARReferenceImage.referenceImages(inGroupNamed: "Photos", bundle: Bundle.main) else {
print("No images available")
return
}
configuration.trackingImages = trackedImages
configuration.maximumNumberOfTrackedImages = 7
sceneView.session.run(configuration)
}
//MARK-: WHERE I PLACE A PLANE/DOG MODEL (named: shipScene) OVER THE DETECTED IMAGE
func renderer(_ renderer: SCNSceneRenderer, nodeFor anchor: ARAnchor) -> SCNNode? {
let node = SCNNode()
if let imageAnchor = anchor as? ARImageAnchor {
let plane = SCNPlane(width: imageAnchor.referenceImage.physicalSize.width, height: imageAnchor.referenceImage.physicalSize.height)
plane.firstMaterial?.diffuse.contents = UIColor(white: 1, alpha: 0.8)
let planeNode = SCNNode(geometry: plane)
planeNode.eulerAngles.x = -.pi / 2
guard let url = Bundle.main.url(forResource: "shipScene", withExtension: "usdz") else { fatalError() }
let mdlAsset = MDLAsset(url: url)
let dogScene = SCNScene(mdlAsset: mdlAsset)
let dogNode = shipScene.rootNode.childNodes.first!
shipNode.position = SCNVector3Zero
shipNode.position.z = 0.15
planeNode.addChildNode(shipNode)
node.addChildNode(planeNode)
}
return node
}
}
我想我可以使用一个版本的
shipNode.position.x
要移动模型,但任何尝试只是将模型移动(而不是旋转)。