DefinitionA <CANONICALLY PARAMETERISED TOPOLOGICAL HEXAHEDRON> is a <CANONICALLY PARAMETERISED TOPOLOGICAL PRIMITIVE> and a <MANIFOLD 3D>; it has eight corners with parametric positions (0,0, 0.0, 0.0), (1,0, 0.0, 0.0), (1.0, 1.0, 0.0), (0.0, 1.0, 0.0), (0,0, 0.0, 1.0), (1,0, 0.0, 0.0), (1.0, 1.0, 1.0), and (0.0, 1.0, 1.0); the domain of parameterization is all triples of reals (ξ,η,ζ) as defined in ISO 15926 Part 3 Section 4.8.3.1