[Repast-developer] life redux

[Nick C. <vze...@ve...>]

Hi,

I've made some more changes to the life model (there in CVS so you can
get them if you want). I'm posting this because the additions support an
"infinite" space. Its not exactly infinite but rather a 46339 x 46339
grid (21447302921 cells). This is built on a sparse matrix so the idea
is that agents have lots of room to roam, but that the number of agents
is extremely small vs. the number of cells. The display for this space
is a view into a particular sub-grid of the larger grid, a kind of
sliding window into the larger space. You can move this window with
arrow keys, although you need to make sure that the display frame (that
is the actual display window on your desktop) is selected. I think the
display threading is synchronized correctly so that you can slide the
window will the simulation is running. At least this works on Linux. 

The "infinite" space and display are not generalized beyond the the life
model and their implementations are in the life package. So, I bring
this up not just to bother y'all, but to point out that those of you
working on spaces may want to look at this code as an example of an
"infinite" space / display. 

Nick

-- 
Nick Collier 
Social Science Research Computing
University of Chicago 
http://repast.sourceforge.net