198     static ReductionType CheckCubicLinear(const SkPoint cubic[4], SkPoint reduction[3],
202     ResultType compareQuadCubic(const SkPoint cubic[4], SkQuadConstruct* );
208     bool cubicMidOnLine(const SkPoint cubic[4], const SkQuadConstruct* ) const;
209     bool cubicPerpRay(const SkPoint cubic[4], SkScalar t, SkPoint* tPt, SkPoint* onPt,
211     bool cubicQuadEnds(const SkPoint cubic[4], SkQuadConstruct* );
212     bool cubicQuadMid(const SkPoint cubic[4], const SkQuadConstruct* , SkPoint* mid) const;
213     bool cubicStroke(const SkPoint cubic[4], SkQuadConstruct* );
223     void setCubicEndNormal(const SkPoint cubic[4],
233     ResultType tangentsMeet(const SkPoint cubic[4], SkQuadConstruct* );
438 void SkPathStroker::setCubicEndNormal(const SkPoint cubic[4], const SkVector& normalAB,  in setCubicEndNormal()
440     SkVector    ab = cubic[1] - cubic[0];  in setCubicEndNormal()
441     SkVector    cd = cubic[3] - cubic[2];  in setCubicEndNormal()
451         ab = cubic[2] - cubic[0];  in setCubicEndNormal()
455         cd = cubic[3] - cubic[1];  in setCubicEndNormal()
513 static bool cubic_in_line(const SkPoint cubic[4]) {  in cubic_in_line()
519             SkVector testDiff = cubic[inner] - cubic[index];  in cubic_in_line()
539     return pt_to_line(cubic[mid1], cubic[outer1], cubic[outer2]) <= lineSlop  in cubic_in_line()
540             && pt_to_line(cubic[mid2], cubic[outer1], cubic[outer2]) <= lineSlop;  in cubic_in_line()
577 SkPathStroker::ReductionType SkPathStroker::CheckCubicLinear(const SkPoint cubic[4],  in CheckCubicLinear()
579     bool degenerateAB = degenerate_vector(cubic[1] - cubic[0]);  in CheckCubicLinear()
580     bool degenerateBC = degenerate_vector(cubic[2] - cubic[1]);  in CheckCubicLinear()
581     bool degenerateCD = degenerate_vector(cubic[3] - cubic[2]);  in CheckCubicLinear()
588     if (!cubic_in_line(cubic)) {  in CheckCubicLinear()
589         *tangentPtPtr = degenerateAB ? &cubic[2] : &cubic[1];  in CheckCubicLinear()
593     int count = SkFindCubicMaxCurvature(cubic, tValues);  in CheckCubicLinear()
599         SkEvalCubicAt(cubic, t, &reduction[index], nullptr, nullptr);  in CheckCubicLinear()
789 bool SkPathStroker::cubicPerpRay(const SkPoint cubic[4], SkScalar t, SkPoint* tPt, SkPoint* onPt,  in cubicPerpRay()
792     SkEvalCubicAt(cubic, t, tPt, &dxy, nullptr);  in cubicPerpRay()
795             dxy = cubic[2] - cubic[0];  in cubicPerpRay()
797             dxy = cubic[3] - cubic[1];  in cubicPerpRay()
802             dxy = cubic[3] - cubic[0];  in cubicPerpRay()
810 bool SkPathStroker::cubicQuadEnds(const SkPoint cubic[4], SkQuadConstruct* quadPts) {  in cubicQuadEnds()
813         if (!this->cubicPerpRay(cubic, quadPts->fStartT, &cubicStartPt, &quadPts->fQuad[0],  in cubicQuadEnds()
821         if (!this->cubicPerpRay(cubic, quadPts->fEndT, &cubicEndPt, &quadPts->fQuad[2],  in cubicQuadEnds()
830 bool SkPathStroker::cubicQuadMid(const SkPoint cubic[4], const SkQuadConstruct* quadPts,  in cubicQuadMid()
833     return this->cubicPerpRay(cubic, quadPts->fMidT, &cubicMidPt, mid, nullptr);  in cubicQuadMid()
902 SkPathStroker::ResultType SkPathStroker::tangentsMeet(const SkPoint cubic[4],  in tangentsMeet()
904     if (!this->cubicQuadEnds(cubic, quadPts)) {  in tangentsMeet()
1015 SkPathStroker::ResultType SkPathStroker::compareQuadCubic(const SkPoint cubic[4],  in compareQuadCubic()
1018     if (!this->cubicQuadEnds(cubic, quadPts)) {  in compareQuadCubic()
1028     if (!this->cubicPerpRay(cubic, quadPts->fMidT, &ray[1], &ray[0], nullptr)) {  in compareQuadCubic()
1084 bool SkPathStroker::cubicMidOnLine(const SkPoint cubic[4], const SkQuadConstruct* quadPts) const {  in cubicMidOnLine()
1086     if (!cubicQuadMid(cubic, quadPts, &strokeMid)) {  in cubicMidOnLine()
1093 bool SkPathStroker::cubicStroke(const SkPoint cubic[4], SkQuadConstruct* quadPts) {  in cubicStroke()
1095         ResultType resultType = this->tangentsMeet(cubic, quadPts);  in cubicStroke()
1102                     fInvResScale)) && cubicMidOnLine(cubic, quadPts)) {  in cubicStroke()
1111         ResultType resultType = this->compareQuadCubic(cubic, quadPts);  in cubicStroke()
1139     if (!this->cubicStroke(cubic, &half)) {  in cubicStroke()
1146     if (!this->cubicStroke(cubic, &half)) {  in cubicStroke()
1215     const SkPoint cubic[4] = { fPrevPt, pt1, pt2, pt3 };  in cubicTo()  local
1218     ReductionType reductionType = CheckCubicLinear(cubic, reduction, &tangentPt);  in cubicTo()
1251     int count = SkFindCubicInflections(cubic, tValues);  in cubicTo()
1257         (void) this->cubicStroke(cubic, &quadPts);  in cubicTo()
1259         (void) this->cubicStroke(cubic, &quadPts);  in cubicTo()
1264     this->setCubicEndNormal(cubic, normalAB, unitAB, &normalCD, &unitCD);  in cubicTo()