change rotation of anchorEntity in RealityKit

Question

kotran OP

Created Feb ’22

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I placed 3d object to ARViewController after 3 seconds of placing object, then I want to rotate object by 90degree

arView.scene.addAnchor(anchorEntity)
 DispatchQueue.main.asyncAfter(deadline: .now() + 3){
            print("after 3 sec ! ")
            let radians = 90.0 * Float.pi / 180.0
            anchorEntity.orientation = simd_quatf(angle: radians, axis: SIMD3(x: 0, y: 1, z: 0))
        }

it works very well but the problem is that I want to smooth rotation , as you can see short video, it suddenly rotate which seem weird.

how can I do this ?

https://youtu.be/Ixk2elm-bfU

Answered by Claude31 in 704656022

You do not define any animation, just ask to rotate by π/2.

So it does what you ask for.

Have a look here on how to achieve:

https://stackoverflow.com/questions/59335075/how-to-animate-a-transform-in-realitykit

Note: you could simplify radians with

let radians = Float.pi / 2.0

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Answer 1

Claude31 OP

Feb ’22

Accepted Answer