On Thu, 5 Nov 1998, Scott Dattalo wrote:

> On Thu, 5 Nov 1998, Peter L. Peres wrote:
>
> > the equation so the sine results from the angle and the previous sine. It
> > would be nice to find out whether this leads to the re-discovery of the
> > Goertzel formula (with which I am not familiar - i.e. I've never seen it -
> > yet).
>
> check out the 5th method on my sine web page:
>
> http://www.interstice.com/~sdattalo/technical/theory/sinewave.html

I will.

> > Is there any data available on Mr. Bresenham, the person ? Web searches
> > yielded nothing interesting. Who owns these algorythms anyway ?
>
> I did a search and got only a few hits. Are you sure this is how
> Bresenham is spelled?

That and his genius are the only 2 things I am certain of about him. His
circle algorythm is described in at least one Sedgewick algorythm book,
you should be able to get it somewhere near you (I've no idea where you
are vs. libraries/bookstores).

BTW nearly all fast & small (as in: embedded, small footprint, etc)
graphics libraries use his algorythms, or so I'm told.

Peter