As an alternative, and probably more accurate, you could use the simulator in Xcode. It's not as good as a real iPad, but I'm thinking it's closer than Chrome.
I'm not sure what's going on here. I was up late, still groggy, but it seems like maybe this template might help...
https://photics.com/free-template-tuesday-34-tumult-hype-jump/
// Camera
ww = window.innerWidth;
document.getElementsByClassName("HYPE_document")[0].style.transform = "rotateY(0deg) translateX(" + Math.min(((ww / 2) / z) - ppbGetX("ball"), 0) + "px)";
Using JavaScript, I created something like a camera. The scene is scaled based on the window size. Perhaps that's what you're looking to do.