M.C.Escher "Tetrahedral Planetoid" Experiment

Last day i have seen a strange picture by Maurits Cornelis Escher (at the bottom of the page).
I have projected them on a Hyperbolic paraboloid.
you can move through the image (click+drag),
zoom+(shift),
zoom-(ctrl)

 

original image

©MC Escher

2008 Rodrigue Pellaud