Inverting controlnet image means "from behind"

[fafayqa]

It could be very handy to have some kind of option telling the CntrolNet that we are displaying person from behind, and I was thinking what about simple "invert image" node before hitting the controlnet itself, and the controlnet would know that if it is fed with the inverted image it means we want it to be displayed from behind (basically if the bg is white and not black...bla bla bla, ya know)?

REASON: with more complex prompts it is quite hard to push ControlNet making the person "from behind", in my case it is like placing literally "(((seen from behind:1.7)))" as the 2nd argument in the positive prompt and even with this it is more or less "guess and try/trial-error" case and still most of the times rendered from the front, which is pretty frustrating indeed.