How to download ARImage (.SCN) file to display image in ARSCNView? - ios

Question

I am trying to download the ARImage(.scn file) In my application. And display in the ARSCNView
Below my code is working fine it's able to display the image. An image is also below
func addARObject(x: Float = 0, y: Float = 0, z: Float = -0.5) {
let aRUrl : URL = URL(string :arImageUrl2)!
do {
let arScene = try SCNScene(url: aRUrl , options: nil)
let arNode = arScene.rootNode.childNode(withName: "chair", recursively: false)
print("x,y,z",x,y,z)
arNode?.position = SCNVector3(x,y,z)
zAxis = z
if isNodeAvailable {
currentNode.position = SCNVector3(x,y,z)
}else{
isNodeAvailable = true
currentNode = arNode
sceneView.scene.rootNode.addChildNode(arNode!)
}
}
catch {
print("errrrrororororor")
}
}
And Output of this is 👇🏻
But chair color is Red and its showing surface white color. but actually, there is no surface.
If the same image I am using In My project folder Without download then chair color is Red.
So Can Anyone Explain to me what's wrong with my code or image issue?
Below Image is when I am using the local File in my Project.

Answer 1

You create a parent node and then you can add all your nodes as children.
var nodes: [SCNNode] = getMyNodes()
var parentNode = SCNNode()
parentNode.name = "chair"
for node in nodes {
parentNode.addChildNodes(node)
}
You can access a specific child using:
parentNode.childNode(withName: nameOfChildNode, recursively: true)
If you are importing from a scene file:
let scene = SCNScene(named: "myScene.scn")
func getMyNodes() -> [SCNNode] {
var nodes: [SCNNode] = [SCNNode]()
for node in scene.rootNode.childNodes {
nodes.append(node)
}
return nodes
}
After getting child node from parent node, you can add texture to the child node.
let childOne = parentNode.childNode(withName: nameOfChildNode, recursively: true)
childOne.?.firstMaterial?.diffuse.contents = UIColor.red