341 struct Edge {  struct
342     enum class Type { kInner, kOuter, kConnector };
343     Edge(Vertex* top, Vertex* bottom, int winding, Type type)  in Edge()  function
364     int      fWinding;          // 1 == edge goes downward; -1 = edge goes upward.
365     Vertex*  fTop;              // The top vertex in vertex-sort-order (sweep_lt).
366     Vertex*  fBottom;           // The bottom vertex in vertex-sort-order.
367     Type     fType;
368     Edge*    fLeft;             // The linked list of edges in the active edge list.
369     Edge*    fRight;            // "
370     Edge*    fPrevEdgeAbove;    // The linked list of edges in the bottom Vertex's "edges above".
371     Edge*    fNextEdgeAbove;    // "
372     Edge*    fPrevEdgeBelow;    // The linked list of edges in the top Vertex's "edges below".
373     Edge*    fNextEdgeBelow;    // "
374     Poly*    fLeftPoly;         // The Poly to the left of this edge, if any.
375     Poly*    fRightPoly;        // The Poly to the right of this edge, if any.
376     Edge*    fLeftPolyPrev;
377     Edge*    fLeftPolyNext;
378     Edge*    fRightPolyPrev;
379     Edge*    fRightPolyNext;
380     bool     fUsedInLeftPoly;
381     bool     fUsedInRightPoly;
382     Line     fLine;
383     double dist(const SkPoint& p) const {  in dist()
386     bool isRightOf(Vertex* v) const {  in isRightOf()
389     bool isLeftOf(Vertex* v) const {  in isLeftOf()
392     void recompute() {  in recompute()
395     bool intersect(const Edge& other, SkPoint* p, uint8_t* alpha = nullptr) const {  in intersect()