I've been learning perspective via a book called "Creative perspective for artists and illustrators" by Ernest Watson. At times the book gets a bit confuing so I thought I'd ask a question here.
If you want to draw a perfect cube by using two point perspective how do you measure the height compared to the lengths of the sides? Or is that impossible and you just have to know what a cube looks in life and do the judgement by eye. My question is if there is a logical way to measure it or just figure by eye?
Thanks in advance!