//A = representation of input (just tl,br) //just a scaling right now
//B = representation of output (just tl,br) //just a scaling right now
//sa = scaling for input (0,1) -> (0,w/h)
//sb = scaling for output (0,1) -> (0,w/h)
//A = representation of input (just tl,br) //just a scaling right now
//B = representation of output (just tl,br) //just a scaling right now
//sa = scaling for input (0,1) -> (0,w/h)
//sb = scaling for output (0,1) -> (0,w/h)