This creates some pretty horrible artefacts if the lines are rotating or vertical…!

I'm also interested in knowing how to do this, and I have a feeling a lot of people are as well. Could you perhaps write som sample code to help us out? thx

Ahh yes, you are correct – I missed the part where the order of matrix algebra is right to left :-) Thank you very much!

Hi again, I tested the code but I'm afraid it has the wrong result. In your example it is rotating in Object Space. This is why I'm using the SCNNode and worldTransform and simdWorldOrientation. To be clear, I'm using SceneKit because it is doing some "World Space" magic :-) and I would like to do that myself. • [World Space.](https://www. dropbox. com/s/q5t12xpk7xjk7qk/WorldSpace.mov?dl=0) • [Object Space.](https://www. dropbox. com/s/uicf149bdqt6yb1/ObjectSpace.mov?dl=0)

Hello and thank you very much for your time and answer secret "Graphics and Games Engineer" ;-) My goal is to not be dependent on SceneKit and be just 100% Metal/MetalKit 🤘🎸 Because I used the scnNode as a placeholder for its capabilities. I'm thinking of simd due to performance, but if you suggest anything else – I'm 100% open to trying it :-)

Yes it does!