S2Cap.this - multiple declarations

Function S2Cap.this

The default constructor returns an empty S2Cap.

this();

Function S2Cap.this

Constructs a cap with the given center and radius. A negative radius yields an empty cap; a radius of 180 degrees or more yields a full cap (containing the entire sphere). "center" should be unit length.

this (
  in const(s2.util.math.vector.Vector!(double,3L)) center,
  S1Angle radius
);

Function S2Cap.this

Constructs a cap where the angle is expressed as an S1ChordAngle. This constructor is more efficient than the one above.

this (
  in const(s2.util.math.vector.Vector!(double,3L)) center,
  s2.s1chord_angle.S1ChordAngle radius
);