Rippling circles

Admittedly, these smaller graphical demos do not quite scuh a complex introduction: but each has a story behind it, and each demonstrates a facet of graphical programming that may not be as easy to elucidate in a larger project. In this case, I was attempting to build a simple, but rapid, circle drawing routine for my new MCGA graphics engine. I acconmplished this by first constructing a reasonably small look up table of Sin and Cos values, and using these to draw points on the circle. Althought his is somewhat crude, it allows fairly large and accurate circles to be drawn very quickly, and din't required any complex or fiddly code. I put the system into a simple graphical demo, displaying concentric circles in a finely grading black and white palett. This proved surprisingly effective (and almost hypnotic), and although the orriginal application of the circle drawing routine is now long forgotten, the legacy of its demonstration has remeined on my hard drive, and has been periodically viewed by myself as I sort through my collection of exe files. The full source code has been recovered, and is compatible with my most recent MCGA graphics unit. There's not much to this reallym but I hope you find it amusing all the same.

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