It seems like we can only translate points and not vectors because of the zero. Is this true? Also, I was reading that w can be 2 or something here as long as x/w and y/w = x and y in the old coordinates. Is that true? Thanks!
claudiakorea
I think we can translate vectors as well because the resulting matrix will be [[x + t_y], [y+t_y], [0]] and that would be a 2D vector as shown in the slide. During the lecture, I also believe it was mentioned that the operation here is valid as long as the w-coordinate of the result is a 1 or a 0
It seems like we can only translate points and not vectors because of the zero. Is this true? Also, I was reading that w can be 2 or something here as long as x/w and y/w = x and y in the old coordinates. Is that true? Thanks!
I think we can translate vectors as well because the resulting matrix will be [[x + t_y], [y+t_y], [0]] and that would be a 2D vector as shown in the slide. During the lecture, I also believe it was mentioned that the operation here is valid as long as the w-coordinate of the result is a 1 or a 0