The code for generating round line joins is optimized with a shortcut
for the inner, normally invisible joins. For certain joins of a
tightly turning bezier, this optimization would lead to visible
painting error. Fix by avoiding the optimization if the next control
point is so close as to allow such tight turns.
As a driveby, make the angle > 90 test cheaper, since absolute
precision is not required in the optimization choice.
Fixes: QTBUG-75008
Change-Id: I293e0776003310dc36fa7f43fbcd9c25f1f8fa5d
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
For some overly tight beziers where the start or end point and the
next control point are closer than the pen width, the stroker's
shifting algorithm will produce a start/end tangent pointing in the
opposite direction from what is expected, for one of the sides. This
would break the square and round capping logic. Fix by detecting the
situation in the capping function and reversing the tangent when
necessary.
Change-Id: I48f4f017403d7b289b0483dd2b3a7ff1bbd0cf2a
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Currently there seems to be no precise definition of what
an integrationtest is in the context of Qt testing.
To avoid confusion, the tests under integrationtests/ are
moved into other/ (which is effectively where we keep
tests that don't clearly fit into any other category).
Tests can be moved back into an integrationtests/ directory
at a later point, should an unambiguous definition be established.
Change-Id: I3bb289be2dc2aca11b51a8ce8fcc5942f06d6c5c
Reviewed-by: Jason McDonald <jason.mcdonald@nokia.com>
