Question

使用Project Dent尝试将3d对象放置在绝对GPS坐标上。

自述文件显示了如何将2D信息注释对象放入AR空间，但无法将其放置在GPS坐标上

Project Dent不使用标准的SceneView，这使得很难根据那里的许多教程来尝试执行此操作。它使用基于ARCL的SceneLocationView

这是2D注释的示例代码

let coordinate = CLLocationCoordinate2D(latitude: 51.504571, longitude: -0.019717)
let location = CLLocation(coordinate: coordinate, altitude: 300)
let view = UIView() // or a custom UIView subclass

let annotationNode = LocationAnnotationNode(location: location, view: view)

sceneLocationView.addLocationNodeWithConfirmedLocation(locationNode: annotationNode)

这就是我一直在尝试使其与3D对象一起使用的方法

let coordinate = CLLocationCoordinate2D(latitude: 51.504571, longitude: -0.019717)
let location = CLLocation(coordinate: coordinate, altitude: 300)
let box = SCNBox(width: 0.1, height: 0.1, length: 0.1, chamferRadius: 0)

let objectNode = LocationNode(location: location, SCNbox: box)

sceneLocationView.addLocationNodeWithConfirmedLocation(locationNode: objectNode)

理想情况下，我希望此代码将3d框简单地放在AR空间中的这些GPS坐标上。

可悲的是，目前我什至无法安装它。

作为对此的更新，我做了以下工作。基于LocationNode在Nodes中创建一个新类，称为ThreeDNode-

open class ThreeDNode: LocationNode {

   // Class for placing 3d objects in AR space
   public let threeDObjectNode: LocationNode

   public init(location: CLLocation?, scene: SCNScene) {

       let boxGeometry = SCNBox(width: 1, height: 1, length: 1, chamferRadius: 0)
       //let boxNode = SCNNode(geometry: boxGeometry)

       threeDObjectNode = LocationNode(location: location)
       threeDObjectNode.geometry = boxGeometry
       threeDObjectNode.removeFlicker()

       super.init(location: location)

       addChildNode(threeDObjectNode)
   }

   required public init?(coder aDecoder: NSCoder) {
       fatalError("init(coder:) has not been implemented")
   }

然后在POIViewController中，尝试使用以下代码在AR空间中放置3d对象-

//example using 3d box object
        let coordinate2 = CLLocationCoordinate2D(latitude: 52.010339, longitude: -8.351157)
        let location2 = CLLocation(coordinate: coordinate2, altitude: 300)

        let asset = SCNScene(named: "art.scnassets/ship.scn")!

        let object = ThreeDNode(location: location2, scene: asset)

        //add to scene with confirmed location
        sceneLocationView.addLocationNodeWithConfirmedLocation(locationNode: object)

不高兴：(任何帮助，不胜感激。

Answer 1

您将要创建一个位置节点，然后将其框添加为其几何或子节点：

let boxNode = SCNNode(geometry: box)

let locationNode = LocationNode(location: location)
locationNode.addChildNode(boxNode)

sceneLocationView.addLocationNodeWithConfirmedLocation(locationNode: locationNode)

我没有在Xcode中运行此代码，因此您可能需要进行调整。

如何使用ARkit在GPS坐标处放置3D对象

1 个答案: