Egon Elbre bce4153640 internal/stroke: fix line overlap ...

When the line overlaps itself backtracking exactly, e.g.

   path.MoveTo(0, 100)
   path.LineTo(100, 0)
   path.LineTo(0, 100)

then acos calculation is relatively unstable. By using atan2 it avoids
some of such problems in the calculation. Additionally, it simpliflies
the round join calculation.

Fixes: https://todo.sr.ht/~eliasnaur/gio/474
Signed-off-by: Egon Elbre <egonelbre@gmail.com>

2023-02-06 12:01:52 -06:00

584 B

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