Struct Cap

s2/cap.go:61–64

Cap represents a disc-shaped region defined by a center and radius. Technically this shape is called a "spherical cap" (rather than disc) because it is not planar; the cap represents a portion of the sphere that has been cut off by a plane. The boundary of the cap is the circle defined by the inters

//
// The zero value of Cap is an invalid cap. Use EmptyCap to get a valid empty cap.
type Cap struct {
	center Point
	radius s1.ChordAngle
}

// CapFromPoint constructs a cap containing a single point.
func CapFromPoint(p Point) Cap {