qt5base-lts/tests/auto/other/lancelot/scripts/degeneratebeziers.qps
Eirik Aavitsland 66c3a71e91 Painter path stroking: fix capping of beziers ending in tight turns
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>
2019-02-05 22:47:16 +00:00

37 lines
768 B
Plaintext

# Version: 1
# CheckVsReference: 5%
path_moveTo degenerate 3427.0918499999997948 3872.1318999999998596
path_cubicTo degenerate 3427.0918499999997948 3872.1318999999994048 4729.4590867905308187 5176.8613451144155988 5389.9325499999995372 5837.8072499999998399
scale 0.05 0.05
translate -2500 -3000
setPen black 800
drawPath degenerate
resetMatrix
path_moveTo revbez 0 20
path_cubicTo revbez 0 0 120 0 120 -20
path_moveTo revbez 0 80
path_cubicTo revbez 0 100 120 100 120 120
translate 50 250
setPen blue 40 solidline flatcap
drawPath revbez
setPen red 0
drawPath revbez
translate 200 0
setPen blue 40 solidline squarecap
drawPath revbez
setPen red 0
drawPath revbez
translate 200 0
setPen blue 40 solidline roundcap
drawPath revbez
setPen red 0
drawPath revbez