英文:
ARImageAnchor orientation in relation to a SCNNode
问题
我的当前代码库提供了与世界相关的ARImageAnchor的方向（俯仰，偏航，翻滚）。我想要实现的目标是获取ARImageAnchor方向数据，相对于在启动会话后的某个时间添加的节点。
func renderer(_ renderer: SCNSceneRenderer, didAdd node: SCNNode, for anchor: ARAnchor) {
guard let _ = anchor as? ARImageAnchor else { return }
DispatchQueue.main.async {
let cylinderNode = SCNNode()
cylinderNode.geometry = SCNCylinder(radius: 0.05, height: 0.4)
node.addChildNode(cylinderNode)
let ea: SCNVector3 = node.eulerAngles
print(self.convert(ea.x), self.convert(ea.y), self.convert(ea.z))
}
}
希望能提供帮助！
英文:
My current code base provides the orientation (pitch, yaw, roll) of an ARImageAnchor in relation to the world. What I want to achieve is to get the ARImageAnchor orientation data in relation to a node that has been added sometime after starting the session.
func renderer(_ renderer: SCNSceneRenderer, didAdd node: SCNNode,
for anchor: ARAnchor) {
guard let _ = anchor as? ARImageAnchor else { return }
DispatchQueue.main.async {
let cylinderNode = SCNNode()
cylinderNode.geometry = SCNCylinder(radius: 0.05, height: 0.4)
node.addChildNode(cylinderNode)
let ea: SCNVector3 = node.eulerAngles
print(self.convert(ea.x), self.convert(ea.y), self.convert(ea.z))
}
}
Any help would be much appreciated!
答案1
得分: 1
你可以将锚点的 orientation part 部分从 simd_float4x4 transform 传递给你的模型（请注意，这些数据存储在当前会话的每个 ARFrame 中），以恢复位置：
import ARKit
import SceneKit
class ViewController: UIViewController, ARSCNViewDelegate {
@IBOutlet var sceneView: ARSCNView!
var model = SCNNode()
override func viewDidLoad() {
super.viewDidLoad()
sceneView.delegate = self
sceneView.scene = SCNScene(named: "ARScene")!
model = sceneView.scene.rootNode.childNode(withName: "model",
recursively: true)!
}
@IBAction func passTransformButton(_ sender: UIButton) {
if let trans = sceneView.session.currentFrame?.anchors[0].transform {
model.simdTransform = trans // Full Transform
model.simdTransform.columns.3.x = 0 // 恢复位置 X
model.simdTransform.columns.3.y = 0 // 恢复位置 Y
model.simdTransform.columns.3.z = 0 // 恢复位置 Z
}
}
}
英文:
You can pass anchor's orientation part of the simd_float4x4 transform to your model (note that this data is stored in each ARFrame of the current session) restoring position:
import ARKit
import SceneKit
class ViewController : UIViewController, ARSCNViewDelegate {
@IBOutlet var sceneView: ARSCNView!
var model = SCNNode()
override func viewDidLoad() {
super.viewDidLoad()
sceneView.delegate = self
sceneView.scene = SCNScene(named: "ARScene")!
model = sceneView.scene.rootNode.childNode(withName: "model",
recursively: true)!
}
@IBAction func passTransformButton(_ sender: UIButton) {
if let trans = sceneView.session.currentFrame?.anchors[0].transform {
model.simdTransform = trans // Full Transform
model.simdTransform.columns.3.x = 0 // restore position X
model.simdTransform.columns.3.y = 0 // restore position Y
model.simdTransform.columns.3.z = 0 // restore position Z
}
}
}
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