14     SkScalar fX, fY, fZ;  member
22     SkScalar x() const { return fX; }  in x()
26     void set(SkScalar x, SkScalar y, SkScalar z) { fX = x; fY = y; fZ = z; }  in set()
29         return a.fX == b.fX && a.fY == b.fY && a.fZ == b.fZ;
42     SkScalar length() const { return SkPoint3::Length(fX, fY, fZ); }  in length()
54         p.set(scale * fX, scale * fY, scale * fZ);  in makeScale()
61         fX *= value;  in scale()
71         neg.fX = -fX;
81         return { a.fX - b.fX, a.fY - b.fY, a.fZ - b.fZ };
87         return { a.fX + b.fX, a.fY + b.fY, a.fZ + b.fZ };
93         fX += v.fX;
101         fX -= v.fX;
107         return { t * p.fX, t * p.fY, t * p.fZ };
116         accum *= fX;  in isFinite()
131         return a.fX * b.fX + a.fY * b.fY + a.fZ * b.fZ;  in DotProduct()
142         result.fX = a.fY*b.fZ - a.fZ*b.fY;  in CrossProduct()
143         result.fY = a.fZ*b.fX - a.fX*b.fZ;  in CrossProduct()
144         result.fZ = a.fX*b.fY - a.fY*b.fX;  in CrossProduct()