Hello, I have the following simple http://www.math.uiuc.edu/~rkirov2/files/escher.py code in pure Python (using the python image library) that produces Droste effect pictures like this one http://www.math.uiuc.edu/~rkirov2/files/spiral.jpg . I wrote the code over 2 years ago in java. Recently, I found mathematica implementation http://blog.wolfram.com/2009/04/24/droste-effect-with-mathematica/, so I am wondering how to implement it more efficiently in Sage. The script above works but doesn't use any of the Cython speed-up, so it takes a minute or two for moderately sized images. Also if it gets fast enough to produce the images, one can make cool movies by adding an offset time variable.
To learn more about the original picture by M.C. Escher that inspired it all you can read this article by H.W.Lenstra. http://www.ams.org/notices/200304/fea-escher.pdf. Rado PS. William told me how to call optimized complex functions, but I can't find the right syntax. Is it in the Sage manual? -- To post to this group, send an email to sage-devel@googlegroups.com To unsubscribe from this group, send an email to sage-devel+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-devel URL: http://www.sagemath.org
