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Re: Bidi reordering engine upgraded
From: |
Eli Zaretskii |
Subject: |
Re: Bidi reordering engine upgraded |
Date: |
Fri, 17 Oct 2014 11:25:54 +0300 |
> From: Thien-Thi Nguyen <address@hidden>
> Date: Fri, 17 Oct 2014 09:50:30 +0200
>
>
> [1:text/plain Hide]
>
> () Eli Zaretskii <address@hidden>
> () Fri, 17 Oct 2014 09:16:05 +0300
>
> > Left-most pixel is numbered 0, and "at 0"
> > refers to that pixel.
>
> But with that model, a 1-pixel line "at 0"
> does NOT "invade" on pixel 1.
>
> Granted (if i take "1-pixel" to mean the length of
> the line, and not its "line width" (a measure
> orthogonal to the line's orientation), which is
> what i normally understand "1-pixel line" to mean),
> but a foo-pixel line "from X to X+W"[0] renders X,
> X+1, X+2 ... X+W, for a total count of W+1 pixels.
> OBOE! The invading pixel is not X+1, but X+W.
But there are W+1 pixels in a line that starts at X and ends at X+W.
W+1, not W.
>
> | 1 2 3
> | 012345678901234567890123456789
> | ***********
> | ^ out out damned dot!
Count the stars, and you will see there are 11 of them, not 10. Where
did the 11th one come from, when we requested a width of 10?
> decide first what we would like to see as the
> hollow cursor for a glyph that is 1-pixel wide.
>
> Perhaps "hollow" in the vertical sense only could be
> expressed as two pixels, one at top, one at bottom.
> That's almost invisible, though; maybe two or three
> at top and two at bottom is better.
Why not just a single-pixel vertical line instead?
- Re: Bidi reordering engine upgraded, (continued)
- Re: Bidi reordering engine upgraded, Eli Zaretskii, 2014/10/15
- Re: Bidi reordering engine upgraded, Dmitry Antipov, 2014/10/15
- Re: Bidi reordering engine upgraded, Eli Zaretskii, 2014/10/16
- Re: Bidi reordering engine upgraded, Thien-Thi Nguyen, 2014/10/16
- Re: Bidi reordering engine upgraded, Eli Zaretskii, 2014/10/16
- Re: Bidi reordering engine upgraded, Thien-Thi Nguyen, 2014/10/16
- Re: Bidi reordering engine upgraded, Eli Zaretskii, 2014/10/16
- Re: Bidi reordering engine upgraded, Thien-Thi Nguyen, 2014/10/17
- Re: Bidi reordering engine upgraded, Eli Zaretskii, 2014/10/17
- Re: Bidi reordering engine upgraded, Thien-Thi Nguyen, 2014/10/17
- Re: Bidi reordering engine upgraded,
Eli Zaretskii <=
- Re: Bidi reordering engine upgraded, Thien-Thi Nguyen, 2014/10/17
- Re: Bidi reordering engine upgraded, Eli Zaretskii, 2014/10/17
- Re: Bidi reordering engine upgraded, Dmitry Antipov, 2014/10/16
- Re: Bidi reordering engine upgraded, Eli Zaretskii, 2014/10/16
- Re: Bidi reordering engine upgraded, Eli Zaretskii, 2014/10/16
- Re: Bidi reordering engine upgraded, Eli Zaretskii, 2014/10/17
- Re: Bidi reordering engine upgraded, Jan Djärv, 2014/10/17
- Re: Bidi reordering engine upgraded, Eli Zaretskii, 2014/10/17
- Re: Bidi reordering engine upgraded, Stefan Monnier, 2014/10/17
- Re: Bidi reordering engine upgraded, Jan Djärv, 2014/10/18