You have to have a basis in order for the computers to recreate a 3-D model. you have to have the rooms dimenshins(spelled wrong) and you have to have the hint of the color and shapes in the room. THe computer can't give you an even close model without these things. I don't mean to disagree with everythin you hav eto say, I'm just saying that you have to have a basis for everything, even with a computer. Nothing is precise, no matter how much you know.