237     void setRayPts(const SkPoint& tPt, SkVector* dxy, SkPoint* onPt, SkPoint* tangent) const;
501     SkVector dxy = lineEnd - lineStart;  in pt_to_line()  local
502     if (degenerate_vector(dxy)) {  in pt_to_line()
506     SkScalar numer = dxy.dot(ab0);  in pt_to_line()
507     SkScalar denom = dxy.dot(dxy);  in pt_to_line()
765 void SkPathStroker::setRayPts(const SkPoint& tPt, SkVector* dxy, SkPoint* onPt,  in setRayPts()  argument
767     SkPoint oldDxy = *dxy;  in setRayPts()
768     if (!dxy->setLength(fRadius)) {  // consider moving double logic into SkPoint::setLength  in setRayPts()
772         dxy->fX = SkDoubleToScalar(xx * dscale);  in setRayPts()
773         dxy->fY = SkDoubleToScalar(yy * dscale);  in setRayPts()
776     onPt->fX = tPt.fX + axisFlip * dxy->fY;  in setRayPts()
777     onPt->fY = tPt.fY - axisFlip * dxy->fX;  in setRayPts()
779         tangent->fX = onPt->fX + dxy->fX;  in setRayPts()
780         tangent->fY = onPt->fY + dxy->fY;  in setRayPts()
788     SkVector dxy;  in conicPerpRay()  local
789     conic.evalAt(t, tPt, &dxy);  in conicPerpRay()
790     if (dxy.fX == 0 && dxy.fY == 0) {  in conicPerpRay()
791         dxy = conic.fPts[2] - conic.fPts[0];  in conicPerpRay()
793     this->setRayPts(*tPt, &dxy, onPt, tangent);  in conicPerpRay()
816     SkVector dxy;  in cubicPerpRay()  local
818     SkEvalCubicAt(cubic, t, tPt, &dxy, nullptr);  in cubicPerpRay()
819     if (dxy.fX == 0 && dxy.fY == 0) {  in cubicPerpRay()
822             dxy = cubic[2] - cubic[0];  in cubicPerpRay()
824             dxy = cubic[3] - cubic[1];  in cubicPerpRay()
829             dxy = chopped[3] - chopped[2];  in cubicPerpRay()
830             if (dxy.fX == 0 && dxy.fY == 0) {  in cubicPerpRay()
831                 dxy = chopped[3] - chopped[1];  in cubicPerpRay()
835         if (dxy.fX == 0 && dxy.fY == 0) {  in cubicPerpRay()
836             dxy = cPts[3] - cPts[0];  in cubicPerpRay()
839     setRayPts(*tPt, &dxy, onPt, tangent);  in cubicPerpRay()
867     SkVector dxy;  in quadPerpRay()  local
868     SkEvalQuadAt(quad, t, tPt, &dxy);  in quadPerpRay()
869     if (dxy.fX == 0 && dxy.fY == 0) {  in quadPerpRay()
870         dxy = quad[2] - quad[0];  in quadPerpRay()
872     setRayPts(*tPt, &dxy, onPt, tangent);  in quadPerpRay()