On Mon, 22 Aug 2011 00:56:35 -0700, "MacArthur, Ian (SELEX GALILEO,
UK)" <[email protected]> wrote:

>
>> I think that lines are drawn correctly but I could be wrong on that.
>> There is a difference of 1 between line drawing and circle drawing
>> coordinates.
>> 
>> It is more annoying than a problem.
>> 
>> Is there some underlying design reason or is it just an oversight. If
>> this is an oversight correcting it now would break existing code.
>> 
>> This has existed in Version 1.1.x and 1.3, to my knowledge.
>
>
>Can you run the unittests example from the tests folder, on your various
>systems, and see how that behaves.
>
>That's (supposed) to be the standard check for line drawing consistency
>across platforms, and I just tried it and it appears to be OK. You'll
>need to try the "rectangles" and the "circles and arcs" pages.


Done

I did a screen captue from Windows and also Linux. In each case I
cropped the image using Paint Shop Pro X.

The fl_pie with X11, the ovals do not reach the green rectangke on the
right and the bottom (short by 1 pixel).

The fl_arc ovals are good for Win32 and X11 as are the circle and
circular arcs.


The filled circle and filled arcs (fl_pie) are good in Win32. For X11
in all cases the circle and arcs do not reach the bottom or right
edges of the green squares (short by 1 pixel) and there is some red.
I do not have anti aliasing turned on in the video card (it looks like
s**t).



 
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