将scnfloor与AR对象联系

Question

我在场景视图中添加了scnfloor以显示阴影，并且有效，但是有两个问题

1-当我添加第一个对象时，地板似乎下方是对象的下方，它显示了阴影，但是如果我在现实世界距离内0.5 m之后移动对象，则地板似乎会在某个时候结束，并且在那一点之后没有阴影。该地板不会用对象

2-当我添加第二个对象时，它在其下方没有地板，而阴影仅显示，然后我将第二个对象移动到第一个对象周围，然后阴影出现。

首先在视图中加载了加载

    let light = SCNLight()
    light.type = .directional
    light.shadowColor =  UIColor(white: 0, alpha: 0.5)
    light.color = UIColor.white
    light.castsShadow = true
    light.automaticallyAdjustsShadowProjection = true
    light.shadowMode = .deferred
    let sunLightNode = SCNNode()
    sunLightNode.position = SCNVector3(x: 1_000, y: 1_000, z: 0)
    sunLightNode.rotation = SCNVector4(x: 1, y: 0, z: 0, w: .pi * 1.5)
    sunLightNode.light = light
    sceneView.scene.rootNode.addChildNode(sunLightNode)

和材料的功能

private func addFloorSCN(node: SCNNode, planeAnchor: ARPlaneAnchor) {
    let anchorX = planeAnchor.center.x
    let anchorY = planeAnchor.center.y
    let anchorZ = planeAnchor.center.z
    
    let floor = SCNFloor()
    let floorNode = SCNNode(geometry: floor)
    floorNode.position = SCNVector3(anchorX, anchorY, anchorZ)


    
    floor.length = CGFloat(planeAnchor.extent.z)
    floor.width = CGFloat(planeAnchor.extent.x)
    floor.reflectivity = 0
    floor.materials = [shadowMaterialStandard()]
    node.addChildNode(floorNode)
}


func shadowMaterialStandard() -> SCNMaterial {
    let material = SCNMaterial()
    material.lightingModel = .constant
    material.writesToDepthBuffer = true
    material.readsFromDepthBuffer = true
    material.colorBufferWriteMask = []
    return material
 }

，最后，我在renderer（_：didAdd：for：for：）中调用了addfloorscn

func renderer(_ renderer: SCNSceneRenderer, didAdd node: SCNNode, for anchor: ARAnchor) {
    guard anchor is ARPlaneAnchor else { return }
    guard let planeAnchor = anchor as? ARPlaneAnchor else { return }
    addFloorSCN(node: node, planeAnchor: planeAnchor)
}

，然后，在这里，地板 这里的问题，有人可以帮我吗？太感谢了

Answer 1

我已经使用RealityKit更新了我的项目，您可以尝试一下，谢谢。
https://github.com/frank.com/frank-com/frank-1992/realitykit_arql