Idle playback in GUI

[richardrl]

Checklist

• I have searched for similar issues.
• For Python issues, I have tested with the latest development wheel.
• I have checked the release documentation and the latest documentation (for main branch).

My Question

I want to be able to press spacebar and run a playback function that idly animates the main 3D scene.

I'm not sure how to do this; seems related to the idea of an animation playback: #2869

[richardrl]

Actually, we can do this if we can control when the renderer updates the scene.

How do I force the renderer in the GUI to re-render all meshes at a new pose, set by:

self._scene.scene.set_geometry_transform(id, transformation.transformation)
If I use:
self._scene.force_redraw()

nothing happens