load a collada (dae) file into SCNNode (Swift - SceneKit)

Question

This works

let scene = SCNScene(named: "house.dae")

Is there an equivalent for a node?

let node = SCNNode(geometry: SCNGeometry( ..??.. "house.dae" ..??.. ))

I have searched high and low, finding nothing that will load an entire dae file into a SCNNode. (not just one ID from it)

possible duplicate of [How do you load a .dae file into an SCNNode in IOS SceneKit?](http://stackoverflow.com/questions/25356301/how-do-you-load-a-dae-file-into-an-scnnode-in-ios-scenekit) — rickster, Aug 20 '14 at 00:36
maybe. here it was answered correctly tho. (load an ENTIRE dae file, not just one ID from it) — quemeful, Aug 20 '14 at 11:28
regarding this decade-old question, i fear the ONLY way to do this now, is as explained here: https://stackoverflow.com/a/75088130/294884 . Just glance in the file (with a text editor) and then it's trivial and smooth. — Fattie, Jan 11 '23 at 19:47

score 13 · Accepted Answer · answered Aug 19 '14 at 18:02

// add a SCNScene as childNode to another SCNScene (in this case to scene)
func addSceneToScene() {
    let geoScene = SCNScene(named: "art.scnassets/ball.dae")
    scene.rootNode.addChildNode(geoScene.rootNode.childNodeWithName("Ball", recursively: true))
}
addSceneToScene()

score 11 · Answer 2 · edited Mar 03 '19 at 07:15

11

iOS 9 introduced the SCNReferenceNode class. Now you can do:

if let filePath = Bundle.main.path(forResource: "Test", ofType: "dae", inDirectory: "GameScene.scnassets") {
   // ReferenceNode path -> ReferenceNode URL
   let referenceURL = URL(fileURLWithPath: filePath)

   if #available(iOS 9.0, *) {
      // Create reference node
      let referenceNode = SCNReferenceNode(URL: referenceURL)
      referenceNode?.load()
      scene.rootNode.addChildNode(referenceNode!)
   }
}

edited Mar 03 '19 at 07:15

Ratnesh Jain

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answered Sep 06 '16 at 23:22

Crashalot

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The best answer! – imike Feb 24 '20 at 19:08

score 5 · Answer 3 · answered May 04 '18 at 04:39

That's what I use in real project:

extension SCNNode {

    convenience init(named name: String) {
        self.init()

        guard let scene = SCNScene(named: name) else {
            return
        }

        for childNode in scene.rootNode.childNodes {
            addChildNode(childNode)
        }
    }

}

After that you can call:

let node = SCNNode(named: "art.scnassets/house.dae")

Noah Witherspoon · Answer 4 · 2014-08-19T18:17:49.527

1

The scene you get from SCNScene(named:) has a rootNode property whose children are the contents of the DAE file you loaded. You should be able to pull children off that node and add them to other nodes in an existing SCNScene.

edited Aug 19 '14 at 18:17

answered Aug 19 '14 at 15:43

Noah Witherspoon

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Note that you can't move the `rootNode` of one scene into a different scene. You'll need to pull out a child node instead. – rickster Aug 19 '14 at 18:05

load a collada (dae) file into SCNNode (Swift - SceneKit)

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