Function OriginPoint

s2/point.go:67–69

OriginPoint returns a unique "origin" on the sphere for operations that need a fixed reference point. In particular, this is the "point at infinity" used for point-in-polygon testing (by counting the number of edge crossings). It should *not* be a point that is commonly used in edge tests in order

()

// north and south poles). It should also not be on the boundary of any
// low-level S2Cell for the same reason.
func OriginPoint() Point {
	return Point{r3.Vector{X: -0.0099994664350250197, Y: 0.0025924542609324121, Z: 0.99994664350250195}}
}

// PointCross returns a Point that is orthogonal to both p and op. This is similar to
// p.Cross(op) (the true cross product) except that it does a better job of