Emulate pinch zoom on chrome

Questions
1

I’m trying to test my code for pinch zoom using chrome’s developer tools (via toggle device toolbar) for touch devices. On mobile, the doc’s arc rotate camera’s example (https://playground.babylonjs.com/#SRZRWV#839) works fine. When I pinch, the camera’s zoom kicks in. On PC, when I use the developer tools and activate shift+left mouse click to emulate the pinch, the cursor switches to the cross (which is correct) but the zoom does not kick in when I move the mouse up/down. Instead it just pans.

My question: are the bjs camera inputs ingesting the browser’s emulated gesture evts?

2

@amoebachant do you know? It wasn’t obvious to me from a quick look.

3

@phaselock, it looks like Chrome doesn’t actually send multiple touch events when using shift-drag in the emulator. Babylon is expecting multiple touch points for pinch operations. A quick search shows that some people use hammerjs for simulating multi-touch - that or another similar tool may be helpful. Thanks!

4

I see, got it ! Thanks.

Weirdly enuff, hammer is no longer maintained and I was told to use native browser dev tools for developing with touch devices. It seems that :hammer: was developed as a stopgap, now that browsers have caught up, its no longer needed. :man_shrugging: