* [ ] {icon circle color=yellow} To be able to manipulate the camera from inside the camera view, we should add a camera gizmo, like so:
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* [ ] {icon circle color=yellow} Make Render Region handles always available inside camera view.
We already have really nice gizmo handles for resizing the Render Region:
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But they only work when the camera is selected. I think this makes them too hidden, and also makes them a hassle to use, because you much keep selecting the camera to use this. We should simply make them always work inside the camera view.