""""""Not sure that vacuum cleaner can make it's job! :)"""""

Ha.... the old shag carpet in my house in '71 laid pretty much flat like that....

But for most carpet, i would probably look for a "half way or less" bend... that would come at the "randomize" point...

But really now.... Michaels answer here is really the answer....

You'll end up needing Pixar's render farm just to visualize the carpet...