BASIC Recursion Program

Back in 2002 a programmer, Cedric Dent (I’m reminded of Hitchhiker’s Guide to the Galaxy – ahh! no that’s Arthur Dent) created a rather nice graphic program to illustrate recursion. It displays a group of 4 squares with a changing pattern followed by a 4-circle design and then repeated.

The original program was designed to run in MODE 8. I’ve changed parameters to operate with 1920 × 1080 resolution (1080p Full HD) monitors giving a great improvement in rendering quality.

http://www.riscosbasic.uk/pics/SquCrcle.zip

Originally from Gordon Sweet’s site the code was part of a program called BestPatterns. Program has gone full circle, originally created in Acorn BBC BASIC, then converted to run on BBC Four Windows (BB4W) and finally back to RISC OS BASIC.

Nice! If you got more of these thingies, more than welcome by me…the good old times when the computer magazines were full with listings of those :-) …and now we got the speed and resolution to bring those a step further…