About the secret technique of Hokusai

Hello everyone. My name is hanai.

Today, I have a picture I would like to show to you.
And I will also tell you the secret of the picture.
(It is not well known.)

"The Great Wave off Kanagawa" (From wikipedia)

Have you seen this picture? This is a woodblock print drawn by "hokusai".

In Japanese I say "Fugaku Sanjūrokkei / Kanagawa oki / nami ura".
(In English "Thirty-six Views of Mount Fuji / Offshore from Kanagawa / Beneath the wave")

If your friend has a Japanese person, please listen to the "correct name" of this picture.
Probably you will not be able to answer.
Because most Japanese don't know the name of this picture.

The Great Wave off Kanagawa (神奈川沖浪裏 Kanagawa-oki nami ura, "Under a wave off Kanagawa"), also known as The Great Wave or simply The Wave, is a woodblock print by the Japanese ukiyo-e artist Hokusai. It was published sometime between 1829 and 1833[1] in the late Edo period as the first print in Hokusai's series Thirty-six Views of Mount Fuji. It is Hokusai's most famous work, and one of the most recognizable works of Japanese art in the world. (from wikipedia)

And here is a picture!!

http://www12.plala.or.jp/solaris_works/reports_002.html
(From "SOLARIS WORKS")

This is the secret of Hokusai.

He was using the ruler and the compass to compose the composition.
(Geometric composition)

"Kanagawa - oki nami ura" is almost decided by two diagonal lines and 19 circular arcs.

He first connects the four corners with a diagonal line.

Then decide the position of the wave and the position of Mt. Fuji using the compass.

Next, draw each arc and decide the composition.

Hokusai uses this technique for other paintings.

Most Japanese don't know about this.

Let's meet again.
Thank you. :)