[cairo-bugs] [Bug 17973] Miter artifact for dashed strokes.

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=17973





--- Comment #5 from Andrea Canciani <ranma42 at gmail.com>  2009-08-13 05:55:55 PST ---
Created an attachment (id=28590)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=28590)
Quartz behaviour

Another argument against the behaviour of the image backend is animation of the
stroked path.
If I were to stroke multiple times a dashed path changing only the dash offset,
I would expect the dashes to simply move along the path without ever changing
shape (including their caps) except for having an appropriate join when they
get bent.
The PS backend already does this for round and butt caps, but apparently not
for the square cap (I would expect the square-capped lines in "PS behaviour" to
terminate with a single square, to be coherent with the round cap style).
The attachment should show what I would expect to be the correct output for the
degenerate-dash test.
(On a side note, it's the output I'm getting from quartz after some work on
fixing the dashes).
I'll try to post a code snippet to excercise dashing with joins/caps as soon as
possible.


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