ARKit和Vision如何在找到的二维码上放置SCNPlane?

通过 Vision

也许你们中有人知道我做错了什么。

let rect = CGPoint(x: barcode.boundingBox.origin.x, y: barcode.boundingBox.origin.y)
let hitTestResults = sceneView.hitTest(rect, types: [.existingPlaneUsingExtent, .existingPlane])
if let hitResult = hitTestResults.first {

    //TODO: change to width and height
    let plane = SCNPlane(width: 0.1, height: 0.1)
    let material = SCNMaterial()
    material.diffuse.contents = UIColor.red
    plane.materials = [material]

    let node = SCNNode()        
    node.transform = SCNMatrix4MakeRotation(-Float.pi / 2, 1, 0, 0)

    node.position = SCNVector3(hitResult.worldTransform.columns.3.x,
                                         hitResult.worldTransform.columns.3.y,
                                         hitResult.worldTransform.columns.3.z)

    node.geometry = plane  
    sceneView.scene.rootNode.addChildNode(node)
}

编辑:

添加了当前情况的图片。红色平面添加在左上角。然而,该平面必须精确地添加到te QRCode上。