Hi,
Liamwazzo makes a good point about the rotation point about a small and sometimes unpredictable ‘target’. I like the idea that rotation is centred around the object under the initial finger contact or about the model centre if initial finger contact is outside the model. But, as Liamwazzo suggests, it can become somewhat unpredictable in a busy, large model.
Difficult to know how it might be improved, how to choose what you are rotating around? Maybe the rotate about model or object centre could be toggled with a second finger (thumb on other hand) on screen. Or possibly the ability to select an object with subsequent rotation about its centre.
Difficult one.
Thanks
Simon