Rewriting path writer
The path writer takes constructs the output path out of
curves that satisfy the pathop operation.
Curves contain lists of t/point pairs that may not be
comparable to each other. To match up curve ends in the
output path, look for adjacent curves to have a shared
membership rather than comparing point values.
Use path utilities to connect partial curve lists into
closed contours.
Share the angle code that determines if a curve has become
a degenerate line with the path writer.
Clean up some code on the way, and delete some unused
functions.
TBR=reed@google.com
BUG=5188
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2321973005
Review-Url: https://codereview.chromium.org/2321973005
diff --git a/src/pathops/SkPathOpsCurve.h b/src/pathops/SkPathOpsCurve.h
index dc9cec9..2b50864 100644
--- a/src/pathops/SkPathOpsCurve.h
+++ b/src/pathops/SkPathOpsCurve.h
@@ -82,6 +82,19 @@
double s, double e, SkPathOpsBounds*);
};
+class SkDCurveSweep {
+public:
+ bool isCurve() const { return fIsCurve; }
+ bool isOrdered() const { return fOrdered; }
+ void setCurveHullSweep(SkPath::Verb verb);
+
+ SkDCurve fCurve;
+ SkDVector fSweep[2];
+private:
+ bool fIsCurve;
+ bool fOrdered; // cleared when a cubic's control point isn't between the sweep vectors
+
+};
extern SkDPoint (SkDCurve::* const Top[])(const SkPoint curve[], SkScalar cWeight,
double tStart, double tEnd, double* topT);