Reverse up-down viewport navigation for Q and E keys

[cvachha]

Reversing the up-down viewport camera translation navigation so that Q makes the camera go down and E makes the camera to go up (earlier they were swapped). This is to match the original Nerfstudio viewer (and also similar to Unity).

Regarding the up-down arrow keys for panning rotating up and down, I noticed that they are reversed compared to the original Nerfstudio viewer, however the current direction of movement for the up down arrow keys in Viser is more ideal for viewing meshes. I am wondering if there is a way to only customize the key input for the new Nerfstudio viewer without affecting Viser for only the up down arrow keys.

[brentyi]

Regarding the up-down arrow keys for panning rotating up and down, I noticed that they are reversed compared to the original Nerfstudio viewer, however the current direction of movement for the up down arrow keys in Viser is more ideal for viewing meshes. I am wondering if there is a way to only customize the key input for the new Nerfstudio viewer without affecting Viser for only the up down arrow keys.

This is an interesting observation... do you have a sense if one of the options is more correct than the other? Is there some standard to follow here?

I believe the current setup in viser is just matched from the camera-controls library's example: https://yomotsu.github.io/camera-controls/examples/keyboard.html

As far as configuration goes, this wouldn't be hard to do if we think it would be generally useful to justify the extra code. (I'm not sure this is the case)