Ulam_1_02_full
By wjm - uploaded on 2008-8-11 305 views (10 in the last 7 days)
Tags: demo with-source
An Ulam pattern is a sequence of prime
numbers wrapped in a square-like spiral.
See what it looks like from various starting
Numbers and also various positions within
the Ulam. Overlay Ulam spirals to form
interesting patterns.
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djb writes (on 2008-8-18):
This version doesn't appear to do anything?
wjm writes (on 2008-8-19):
Sorry for the problem. Just to let you know, this is my first posted scenario so maybe I didn't build it correctly; if I screwed up, once again, sorry. This is what I did to respond to your question:
1. downloaded and extracted zip file
2. dropped Ulam_1_02_full on my Greenfoot shortcut
3. Compile all
4. added actor class to ulamWorld
5. Run
it works!
Please let me know if I can be more helpful.
davmac writes (on 2008-8-25):
Just to make it clear, this scenario isn't functional here on the gallery: It's intended to be downloaded and played around with in Greenfoot. (Right wjm?)
wjm writes (on 2008-8-25):
Yes, it must be run locally. Maybe I don't understand how to control the gallery, but I just don't see how to include Actor objects (and the terminal window) in the world in any other way. That's why I also exported, in addition to the full version, a 'sample' version (with reduced functionality) so that you could see what an Ulam spiral looks like.
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