SCNSceneSource identifiers with usdz file are empty












0















We are working on a project with ARKit 2 + SceneKit, iOS 12.
We were able to retrieve CAAnimation instances with .dae files and control them at runtime.
Now, we are trying .usdz, but none of the classes can be extracted from SCNSceneSource with usdz :



let source = SCNSceneSource(url: url, options: options)
let animationIdentifiers = source?.identifiersOfEntries(withClass: CAAnimation.self)


animationIdentifiers is always empty. The same goes for all classes listed in the documentation for this function https://developer.apple.com/documentation/scenekit/scnscenesource/1523656-identifiersofentries



We have tested our own usdz creations as well as some usdz from https://fusionar.app.



Tough, the animations play nicely when viewing the file either on iOS or in Xcode, where we have access to the animations and scene graph settings :



Xcode animation



But definitely not from code at runtime, so we are unable to control the animations.



Have you ever had this issue ?



Any insight on this ?










share|improve this question



























    0















    We are working on a project with ARKit 2 + SceneKit, iOS 12.
    We were able to retrieve CAAnimation instances with .dae files and control them at runtime.
    Now, we are trying .usdz, but none of the classes can be extracted from SCNSceneSource with usdz :



    let source = SCNSceneSource(url: url, options: options)
    let animationIdentifiers = source?.identifiersOfEntries(withClass: CAAnimation.self)


    animationIdentifiers is always empty. The same goes for all classes listed in the documentation for this function https://developer.apple.com/documentation/scenekit/scnscenesource/1523656-identifiersofentries



    We have tested our own usdz creations as well as some usdz from https://fusionar.app.



    Tough, the animations play nicely when viewing the file either on iOS or in Xcode, where we have access to the animations and scene graph settings :



    Xcode animation



    But definitely not from code at runtime, so we are unable to control the animations.



    Have you ever had this issue ?



    Any insight on this ?










    share|improve this question

























      0












      0








      0








      We are working on a project with ARKit 2 + SceneKit, iOS 12.
      We were able to retrieve CAAnimation instances with .dae files and control them at runtime.
      Now, we are trying .usdz, but none of the classes can be extracted from SCNSceneSource with usdz :



      let source = SCNSceneSource(url: url, options: options)
      let animationIdentifiers = source?.identifiersOfEntries(withClass: CAAnimation.self)


      animationIdentifiers is always empty. The same goes for all classes listed in the documentation for this function https://developer.apple.com/documentation/scenekit/scnscenesource/1523656-identifiersofentries



      We have tested our own usdz creations as well as some usdz from https://fusionar.app.



      Tough, the animations play nicely when viewing the file either on iOS or in Xcode, where we have access to the animations and scene graph settings :



      Xcode animation



      But definitely not from code at runtime, so we are unable to control the animations.



      Have you ever had this issue ?



      Any insight on this ?










      share|improve this question














      We are working on a project with ARKit 2 + SceneKit, iOS 12.
      We were able to retrieve CAAnimation instances with .dae files and control them at runtime.
      Now, we are trying .usdz, but none of the classes can be extracted from SCNSceneSource with usdz :



      let source = SCNSceneSource(url: url, options: options)
      let animationIdentifiers = source?.identifiersOfEntries(withClass: CAAnimation.self)


      animationIdentifiers is always empty. The same goes for all classes listed in the documentation for this function https://developer.apple.com/documentation/scenekit/scnscenesource/1523656-identifiersofentries



      We have tested our own usdz creations as well as some usdz from https://fusionar.app.



      Tough, the animations play nicely when viewing the file either on iOS or in Xcode, where we have access to the animations and scene graph settings :



      Xcode animation



      But definitely not from code at runtime, so we are unable to control the animations.



      Have you ever had this issue ?



      Any insight on this ?







      ios swift animation scenekit usdz






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 20 '18 at 19:19









      ryancrunchiryancrunchi

      367113




      367113
























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          Retrieving entries from a SCNSceneSource only works for Collada files. When working with USDZ file you'll have to traverse the node hierarchy and retrieve the animation from the node that holds it using -animationPlayerForKey:.






          share|improve this answer
























          • nice, could you explain why ?

            – ryancrunchi
            Nov 21 '18 at 16:47











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          1 Answer
          1






          active

          oldest

          votes









          active

          oldest

          votes






          active

          oldest

          votes









          0














          Retrieving entries from a SCNSceneSource only works for Collada files. When working with USDZ file you'll have to traverse the node hierarchy and retrieve the animation from the node that holds it using -animationPlayerForKey:.






          share|improve this answer
























          • nice, could you explain why ?

            – ryancrunchi
            Nov 21 '18 at 16:47
















          0














          Retrieving entries from a SCNSceneSource only works for Collada files. When working with USDZ file you'll have to traverse the node hierarchy and retrieve the animation from the node that holds it using -animationPlayerForKey:.






          share|improve this answer
























          • nice, could you explain why ?

            – ryancrunchi
            Nov 21 '18 at 16:47














          0












          0








          0







          Retrieving entries from a SCNSceneSource only works for Collada files. When working with USDZ file you'll have to traverse the node hierarchy and retrieve the animation from the node that holds it using -animationPlayerForKey:.






          share|improve this answer













          Retrieving entries from a SCNSceneSource only works for Collada files. When working with USDZ file you'll have to traverse the node hierarchy and retrieve the animation from the node that holds it using -animationPlayerForKey:.







          share|improve this answer












          share|improve this answer



          share|improve this answer










          answered Nov 21 '18 at 11:33









          mnuagesmnuages

          9,48521429




          9,48521429













          • nice, could you explain why ?

            – ryancrunchi
            Nov 21 '18 at 16:47



















          • nice, could you explain why ?

            – ryancrunchi
            Nov 21 '18 at 16:47

















          nice, could you explain why ?

          – ryancrunchi
          Nov 21 '18 at 16:47





          nice, could you explain why ?

          – ryancrunchi
          Nov 21 '18 at 16:47




















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