Bill Atkinson

William "Bill" D. Atkinson (born March 17, 1951) is an American computer engineer, computer programmer and photographer. Atkinson worked at Apple Computer from 1978 to 1990. Some of Atkinson's noteworthy contributions to the field of computing include Macintosh QuickDraw and Lisa LisaGraf (Atkinson independently discovered the midpoint circle algorithm for fast drawing of circles by using the sum of consecutive odd numbers), Marching ants, the double-click, Menu bar, the selection lasso, MacPaint (FatBits), HyperCard, Atkinson dithering, and the app PhotoCard. Provided by Wikipedia