Scenekit move object with respect to camera

Question

I've placed a node in Scenekit/ARKit

Now I want to move node/object to right and left with help of buttons. Issue is when I moves my camera/device and press right button, node moves in direction of axis it was first initiated, Not moves right with respect to camera. How can I achieve this?

current code on tapping right button

position.x += 0.2

This is because the Coordinate System of ARKit is placed initial, and then remains static until you reset the ARSession. You will have to find a solution to determine the angle between the initial position and the current camera positioin. This can be quite tricky. — ZAY, Mar 12 '22 at 07:33
Can you please share a [minimum reproducible example](https://stackoverflow.com/help/minimal-reproducible-example) ? — de., Mar 15 '22 at 12:00
@de. Can you kindly explain what kind of example you require from my side to reproduce? bcz this will happen with every project/node when you change the position of camera. — Haris, Mar 16 '22 at 05:13
I usually create a new Xcode project and drop minimal code in to show the issue, ideally only in one file, and paste the code in the question. Example: https://stackoverflow.com/a/66475284/921573 — de., Mar 16 '22 at 09:37

score 2 · Accepted Answer · answered Apr 01 '22 at 14:11

2

Here is the solution

guard let front = sceneView.pointOfView?.simdWorldFront else {return}
let horazontalRight = cross(front, simd_float3(0,1,0))
    
// for moving right
node.position +=  SCNVector3(horazontalRight *  0.01)

answered Apr 01 '22 at 14:11

Haris

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`extension SCNVector3 { static func +=(lhv: inout SCNVector3, rhv: SCNVector3) { lhv.x += rhv.x lhv.y += rhv.y lhv.z += rhv.z } }` – schornon Jun 14 '22 at 12:13
Thank you for posting the solution. Have been fighting with the same problem – tamaramaria May 28 '23 at 10:54

Scenekit move object with respect to camera

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