[Proposal] Add function to lock the rotation axis in 3D view

[varkatope]

It's a bit harder than it should be to manipulate the 3D views and it would be nice to be able to just lock the rotation axis so that the view can only be rotated horizontally, for example, at least while using the regular left-mouse button to rotate.

[Calinou]

I think at least one of the rotation axes should be locked permanently, like in Godot or Blender when you use the default orbit settings. This way, you don't end up rolling the camera when you don't intend to 🙂

If changing the roll is desired, it should require a modifier like Ctrl (Shift is already used to keep the background in place).

[Tar0x]

Omg yes please! To rotate camera and then roll it is really time consuming.

[Calinou]

I tried to implement this a while ago but didn't succeed in doing so. It can be done easily by using a "pivot" yaw node and a pitch node as a child, but that's the hacky way of doing it…