tree f03e2db9427caf679d164a925c581b3b204d4c51
parent 4b40cf299947bdbcbd164f59b9d9b54a371eeedb
author Ian Prest <iapres@microsoft.com> 1581619616 -0800
committer Skia Commit-Bot <skia-commit-bot@chromium.org> 1581722255 +0000

Reland: Ensure arcTo (SVG) ends at the targeted point

Floating-point errors in the calculations in arcTo can cause the final
point to differ significantly enough from the supplied target point that
a subsequent 'close' operation inserts a lineTo to close the curve. This
can result in bad miters on curves with thick outlines.

The fix is to ensure that the final point used is *exactly* the point
that was supplied.

The fix is now staged behind a flag so that we can fix Chromium test
failures before turning it on.

Bug: chromium:1001768
Change-Id: I82d872f2ae39b5486f7d810a61ba00eeda1b3a62
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/270503
Commit-Queue: Mike Reed <reed@google.com>
Reviewed-by: Mike Reed <reed@google.com>