Movable vanishing point for a room. (stage)

I have been experimenting with guidelines to create a vanishing point in a rectangular room. Using the straight line connector tool, I joined four lines from a page frame to a smaller rectangle. I then added some guidelines, moved their rotation origin to the relevant corner and rotated them to form an intersection that denoted the vanishing point.

When i move the rectangle the, connector lines will lengthen and shorten as expected, is there any way to fix the guidelines to the corner of the rectangle so that the correct vanishing point for the new perspective will be shown?