canvas flipping and rotation

blender needs a way to flip and rotate the canvas (which is the camera view in blender ) like we have in painting programs .

not only for grease pencil but for actual art review too. a quick flip canvas hotkey would benefit every artist on every project ! facts !

blender obviously doesnt have a canvas , but a camera view instead, and a viewport camera view too.

i think the best the implementation in blender could be an offset code both in the viewport view AND in camera objects which are synced to 2 global hotkeys for flipping and rotation.

why this way? because canvas flipping and rotation are only tools not something you implement into your art, you only use them when you are working and then go back to your real view.

they should specifically NOT be keyframable data ! as that would completely throw of their whole purpose..

also it should be implemented in a way, that the camera object itsself doesnt rotate or scale-1 , it should be done by internal matrix transformation and invisibal to the rest of blender.

some people came up with some workaround but they are all lacking or completley unusable for animation projects.

yeah , this is probably very easy to implement too. but needs work on basecode , otherwise i´d do it in python but no chance.

as a workaround i use the delta scale and rotation values of a camera object which is flipped with a script

bpy.context.scene.camera.delta_scale = ((-1.0, 1.0, 1.0))

but yeah thats less than good for scenes with multiple cameras and doesnt work outside of camera view either