A little bit more about David Hockney, as it’s his 80th birthday – a repost from February
Here is just one quick example of Andre Kertesz’ work with shadow – which repays close observation.
It reminds me of David Hockney – here in Portrait of an artist (Pool with 2 figures) painted by David Hockney (below)
Hockney was so absorbed with the reflections within water that he painted the bottom of his pool with physical blue curves, to give that sense of movement:
EDavid Hockney with a model in the pool at Hockney’s house, 1978 photo by Michael Childers
Comma And 
There’s a hotel pool in Hollywood that was painted by Mr. Hockney, or at least that’s the legend:
https://sanslartigue.wordpress.com/2011/11/12/hockney-under-water/
Thank you, David! It’s certainly a similar design, although it looks a wee bit more regular than his own one. Interesting!
http://articles.latimes.com/1988-05-03/news/vw-1821_1_roosevelt-pool
Art 1 Health&Safety Gone Mad 0. Thank you for the update.