Re: [AGG] Subpixel problem - 90/180 deg. lines

[Oyvind I. <oyv...@gm...>]

Yep, thats the problem.

I think I'll make a new conv_round() class and wrap it up that way in those
cases.


-- Oyvind

On Mon, Mar 7, 2011 at 3:58 PM, Phil Endecott <spa...@ch...>wrote:

> Oyvind Idland wrote:
> > When a line segment is 90 or 180 degrees (has same x or y), the subpixel
> > logic makes the lines appear as 50% transparent and twice as fat as they
> > should be.
>
> Presumably that is the standard issue of whether 1-px-wide lines are
> better centred on whole coordinates or on 0.5 coordinates, i.e. are
> "pixels" points or unit-squares.
>
>
> Phil.
>
>
>
>
>
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