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swiftsprite-kitscenekitios11arkit

ARKit – How to load a GIF animation in ARSession?

I am working on an application using ARKit and SceneKit frameworks. I am able to render my 3D object, create overlay etc. I want to load a GIF animation like a overlay in ARSession on tap of one of my child nodes. Is this possible?

I tried adding SKScene as a overlay to my SCNScene like below, and it looks good.

informationOverlay = InformationOverlayScene(size: self.sceneView.frame.size)
self.sceneView.overlaySKScene = informationOverlay

But how to load this GIF file in SKScene or SCNNode?

Solution

  • The following SO question answers how to display an animation inside an SKNode: Simple Gif like animation with Spritekit

    You could use projectPoint to project the location of the SCNNode (of your 3D model) to a 2D location on screen, and then use that for the location of the SKNode containing the animation. That way the animation will always face the screen.

    Alternatively, you could assign a Core Animation layer containing the animation to the .diffuse.contents property of a SCNMaterial and assign that to a SCNPlane which you can add to the scene and position above the 3D model. If you want that plane to face the camera, simply assign the .pointOfView.orientantion property of your SCNView to the SCNNode that holds the SCNPlane.