我正在尝试将ARImageAnchor与ARPlaneAnchor放置在相同的位置，但是它不起作用。我认为这是问题所在的renderer函数的开始：
func renderer(_ renderer: SCNSceneRenderer, didAdd node: SCNNode, for anchor: ARAnchor) {
guard let imageAnchor = anchor as? ARImageAnchor else { return }
guard let planeAnchor = anchor as? ARPlaneAnchor else { return }
...
}
当我注释掉与planeAnchor有关的所有内容时，它都可以正常工作，但是一旦我尝试将它们放在相同的位置，它仍然可以编译，但不会检测到参考图像。有人以前遇到过这样的问题吗？谢谢！
更新：将sceneView作为我的ARSCNView，我使用以下代码：
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
print("got here")
guard let touchLocation = touches.first?.location(in: sceneView),
let hitTest = sceneView?.hitTest(touchLocation, options: nil),
//let detectedPlane = planes[planeAnchor],
let nodeTapped = hitTest.first?.node,
let nodeName = nodeTapped.name else { return }
print("got here 2")
print(nodeName)
}
但是“我在这里2”从未打印过，当我在飞机上点击时什么也没有发生。我应该怎么做？
最佳答案
再看一遍，我不可能。
如果您将ARWorldTrackingConfiguration设置为检测飞机，例如：
configuration.planeDetection = .horizontal
然后在委托方法中添加以下调试日志：
func renderer(_ renderer: SCNSceneRenderer, didAdd node: SCNNode, for anchor: ARAnchor) {
print(anchor.classForCoder)
}
您将看到，当检测到目标图像时，它将记录
ARImageAnchor，而如果检测到水平面，它将记录：ARPlaneAnchor。这就是您的警卫声明不执行的原因：
guard let planeAnchor = anchor as? ARPlaneAnchor else { return }
只是因为不能同时有两个锚点...
ARPlaneAnchor或ARImageAnchor。根据您的上一个响应进行的更新，它将使您能够获得以下属性：
func renderer(_ renderer: SCNSceneRenderer, didAdd node: SCNNode, for anchor: ARAnchor) {
//1. If Out Target Image Has Been Detected Than Get The Corresponding Anchor
guard let currentImageAnchor = anchor as? ARImageAnchor else { return }
//2. Get The Targets Name
let name = currentImageAnchor.referenceImage.name!
//3. Get The Targets Width & Height
let width = currentImageAnchor.referenceImage.physicalSize.width
let height = currentImageAnchor.referenceImage.physicalSize.height
//4. Log The Reference Images Information
print("""
Image Name = \(name)
Image Width = \(width)
Image Height = \(height)
""")
}
我仍然不明白，但是为什么您还需要一个PlaneAnchor，您可以使用它来显示模型等：）
如果要在该锚点添加一些东西，请尝试以下操作：
/// Generates An SCNPlane On The Detected Image At The Size Of The Target
///
/// - Parameters:
/// - node: SCNNode
/// - width: CGFloat
/// - height: CGFloat
func generateModel(_ node: SCNNode, width: CGFloat, height: CGFloat){
let nodeToAdd = SCNNode()
let planeGeometry = SCNPlane(width: width, height: height)
planeGeometry.firstMaterial?.diffuse.contents = UIColor.red
nodeToAdd.geometry = planeGeometry
nodeToAdd.transform = SCNMatrix4MakeRotation(-Float.pi / 2, 1, 0, 0)
node.addChildNode(nodeToAdd)
}
并在委托方法中调用它：
generateModel(node, width: width, height: height)
我认为这是您要实现的目标。
更新：要在添加的节点上获得hitTest，只需使用touchesBegan例如
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
guard let touch = touches.first?.location(in: self.augmentedRealityView),
let hitTest = self.augmentedRealityView?.hitTest(touch, options: nil),
let nodeTapped = hitTest.first?.node,
let nodeName = nodeTapped.name else { return }
print(nodeName)
}
更新：
如果放置在
ImageAnchor上的对象似乎不稳定，则可能是您在ARAssets Bundle中错误地设置了referenceImage大小：