diff options
| author |  caryclark <caryclark@google.com> | 2015-05-18 05:12:56 -0700 |
|---|---|---|
| committer |  Commit bot <commit-bot@chromium.org> | 2015-05-18 05:12:56 -0700 |
| commit | 5b5ddd73b4baf22752924bf20d097e96236c36f8 (patch) | |
| tree | e4ae4c9db97d4a19fe504b9aabf5f6d373aeeffa /src/pathops/SkOpContour.cpp | |
| parent | 2e0303f91bdada6dddb73105a82f17601265379d (diff) | |
The path ops builder code needs to determine the winding of each contour added, and reverse windings if the contours are nested in other contours.
Cheap (one contour) paths can be evaluated and reversed as needed with a minimum of checking, but multi-contour paths invoke the regular path ops machinery to determine who is contained by whom.
More tests need to be added to verify that all corner cases are considered, but this fixes the cases in the bug thus far.
R=fmalita@chromium.org
TBR=reed@google.com
BUG=skia:3838
Review URL: https://codereview.chromium.org/1129193006
Diffstat (limited to 'src/pathops/SkOpContour.cpp')
| -rw-r--r-- | src/pathops/SkOpContour.cpp | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/src/pathops/SkOpContour.cpp b/src/pathops/SkOpContour.cpp index 178ba3e89c..18b6328a7e 100644 --- a/src/pathops/SkOpContour.cpp +++ b/src/pathops/SkOpContour.cpp @@ -47,6 +47,16 @@ void SkOpContour::toPath(SkPathWriter* path) const { path->close(); } +void SkOpContour::toReversePath(SkPathWriter* path) const { + const SkPoint& pt = fTail->pts()[0]; + path->deferredMove(pt); + const SkOpSegment* segment = fTail; + do { + segment->addCurveTo(segment->tail(), segment->head(), path, true); + } while ((segment = segment->prev())); + path->close(); +} + SkOpSegment* SkOpContour::undoneSegment(SkOpSpanBase** startPtr, SkOpSpanBase** endPtr) { SkOpSegment* segment = &fHead; do { |