Cube
2D Cube
julia> c = Cube(PVector2D(1.0, 1.0), PVector2D())
Cube2D{Float64}(PVector2D{Float64}(1.0, 1.0), PVector2D{Float64}(0.0, 0.0))
julia> PhysicalMeshes.area(c)
1.0
3D Cube
julia> c = Cube(PVector(1.0, 1.0, 1.0, u"m"), PVector(u"m"))
Cube{Unitful.Quantity{Float64, ๐, Unitful.FreeUnits{(m,), ๐, nothing}}}(PVector(1.0 m, 1.0 m, 1.0 m), PVector(0.0 m, 0.0 m, 0.0 m))
julia> PhysicalMeshes.volume(c)
1.0 m^3