class astropy.modeling.projections.QuadCube(*args, meta=None, name=None, **kwargs)[source] [edit on github]

Bases: astropy.modeling.projections.Projection

Base class for quad cube projections.

Quadrilateralized spherical cube (quad-cube) projections belong to the class of polyhedral projections in which the sphere is projected onto the surface of an enclosing polyhedron.

The six faces of the quad-cube projections are numbered and laid out as:

4 3 2 1 4 3 2