我正在使用“ Mapbox”框架进行AR导航,我需要在两个地理位置之间添加SCNPlane,如下图所示
//代码-添加SCNNode和SCNPlane
func renderer(_ renderer: SCNSceneRenderer, didAdd node: SCNNode, for anchor: ARAnchor) {
// 1
guard let planeAnchor = anchor as? ARPlaneAnchor else { return }
// 2
let width = CGFloat(planeAnchor.extent.x )
let height = CGFloat(planeAnchor.extent.z)
let plane = SCNPlane(width: width, height: height)
// 3
plane.materials.first?.diffuse.contents = UIColor.lightText
// 4
let planeNode = SCNNode(geometry: plane)
// 5
let x = CGFloat(planeAnchor.center.x)
let y = CGFloat(planeAnchor.center.y)
let z = CGFloat(planeAnchor.center.z)
planeNode.position = SCNVector3(x,y,z)
planeNode.eulerAngles.x = -.pi / 2
// 6
node.addChildNode(planeNode)
}
//在此处更新节点
func renderer(_ renderer: SCNSceneRenderer, didUpdate node: SCNNode, for anchor: ARAnchor) {
// 1
guard let planeAnchor = anchor as? ARPlaneAnchor,
let planeNode = node.childNodes.first,
let plane = planeNode.geometry as? SCNPlane
else { return }
// 2
let width = CGFloat(planeAnchor.extent.x + 100)
let height = CGFloat(planeAnchor.extent.z )
plane.width = width
plane.height = height
// 3
let x = CGFloat(planeAnchor.center.x)
let y = CGFloat(planeAnchor.center.y)
let z = CGFloat(planeAnchor.center.z)
planeNode.position = SCNVector3(x, y, z)
}
在这里,我使用ARPlaneAnchor来检测平面并使用didAdd / didUpdate委托添加/更新SCNNode,但是我需要在两个地理位置之间绘制SCNPlane,而无需使用ARPlaneAnchor。
预先感谢