shirley@uiucdcs.CS.UIUC.EDU (08/29/86)
I've noticed that Quickdraw ovals are sometimes strange-- often there are "clumps" of pixels that seem too dense, and even more strange are complete breaks in ovals (I've only noticed these breaks in ovals of high eccentricity). I don't think that these ovals are generated by a Bressenham-like algorithm, mainly because of the breaks. Does anyone know the algorithm that is used? Any references? Is a non-standard algorithm being used to save space in ROM, and/or is it a fast algorithm? Thanks in advance, Peter Shirley University of Illinois