Re: Off-by-one in gdk_draw_poly

[Kenneth Albanowski <kjahds kjahds com>]

On 21 Nov 1998, Owen Taylor wrote:

> I don't believe you are seeing a bug in GDK (which is only a 
> think wrapper around X here) or in X. Rather, the set of pixels
> drawn by a filled polygon does not necessarily contain all the
> pixels drawn for an unfilled polygon. The filled polygon (IIRC)
> will only draw the pixels exactly on the border of the polygon
> for the top and left edges, but not for the bottom and right edges.
> (This is so that mulitiple adjacent polygons mate correctly)

As I recall, this also affects arcs (in an even less controllable manner.) 

-- 
Kenneth Albanowski (kjahds@kjahds.com, CIS: 70705,126)