21 struct SkEdge {  struct
28     SkEdge* fNext;  argument
29     SkEdge* fPrev;  argument
31     SkFixed fX;
32     SkFixed fDX;
33     int32_t fFirstY;
34     int32_t fLastY;
35     int8_t fCurveCount;    // only used by kQuad(+) and kCubic(-)
36     uint8_t fCurveShift;    // appled to all Dx/DDx/DDDx except for fCubicDShift exception
37     uint8_t fCubicDShift;   // applied to fCDx and fCDy only in cubic
38     int8_t  fWinding;       // 1 or -1
67 struct SkQuadraticEdge : public SkEdge {  argument