Here is a simple way to work out a 5 point perspective. Its a cheat really…there are an infinite numbers of points of perspective..but its handy for drawing heating or cooling grills and other repeated sloping items in a mostly vertical horizontal scene, Here I have drawn the open flabs on a box.
The forth a fifth points of peerspective are deduced by raising a vertical from VP 1 and 2
The third point wont fit on the page…
Also see:
Vanishing point and horizion line
One, two and three point perspective
