This package provides basic geometry components on the 2-sphere.
We use here the topologists definition of the 2-sphere (see Sphere on MathWorld), i.e. the 2-sphere is the two-dimensional surface defined in 3D as x2+y2+z2=1.
Class Summary Class Description CircleThis class represents an oriented great circle on the 2-sphere. EdgeSpherical polygons boundary edge. S2PointThis class represents a point on the 2-sphere. Sphere2DThis class implements a two-dimensional sphere (i.e. SphericalPolygonsSetThis class represents a region on the 2-sphere: a set of spherical polygons. SubCircleThis class represents a sub-hyperplane for
VertexSpherical polygons boundary vertex.