ArcRotateCamera around axes other than world X and Y

[zhutq]

Hi,

ArcRotateCamera is a really greate camera.
I'm wondering if it can be made around some other axes instead of world X and Y. Because I mainly work in a Z-up coordinate system, and sometimes, I need to align the viewport to an arbitrary rectangle in 3D and do some panning.

Using a parent for the camera can make rotation work but seems not panning:
http://www.babylonjs-playground.com/#12WBC#139

What I did was hacking the rebuildAnglesAndRadius and _getViewMatrix methods code, changing the computation of alpha, beta and target. This works for me but is too hacky.

What's your suggestion?
It's appreciated if there's a convenient way.

 

Thanks @Deltakosh for responding here https://github.com/BabylonJS/Babylon.js/issues/3392#issuecomment-351732710 .

Yes I did try to set the upVector to `new BABYLON.Vector3(0, 0, 1);` but it did not work.

http://www.babylonjs-playground.com/#12WBC#140

To what value should I set upVector?

 

Thank you very much!

[GameMonetize]

I suggest not attaching a parent but just playing with the upVector (like you did)

But perhaps I do not get what you want to achieve?

 

Also I would highly suggest to change your geometry instead of the camera (If this makes sense) perhaps by adding a root node and playing with its rotation