ios - 使用 SceneKit 从 CapturedRoom.walls 重新创建 RoomPlan

Question

我对 swift 比较陌生，并尝试使用 Apple 的 RoomPlan API 来创建内部没有任何物体的房间的渲染图。为此，我使用 CapturedRoom.walls 给出的墙壁列表，并使用给出的信息创建一系列 SCNNode。这样我就可以在应用程序中随意修改房间了。然而，墙壁出现在随机的地方？不确定我哪里出错了:

//roomScan is a CapturedRoom object, scene is an SCNScene
for i in 0...(roomScan.walls.endIndex-1) {
 
   //Generate new wall geometry
   let scannedWall = roomScan.walls[i]
            
   let length = scannedWall.dimensions.x
   let width = 0.2
   let height = scannedWall.dimensions.y
   let newWall = SCNBox(
      width: CGFloat(width),
      height: CGFloat(height),
      length: CGFloat(length),
      chamferRadius: 0
   )
            
   newWall.firstMaterial?.diffuse.contents = UIColor.white
   newWall.firstMaterial?.transparency = 0.5
            
   //Generate new SCNNode
   let newNode = SCNNode(geometry: newWall)
   newNode.simdTransform = scannedWall.transform

   scene.rootNode.addChildNode(newNode)
}

This is what the CapturedRoom looks like

But this what my code is outputting

Answer 1

应该是下面的吗？

let length = 0.2
let width = scannedWall.dimensions.x
let height = scannedWall.dimensions.y