DynamicType() no longer wrapped on Geom_ classes.

[aothms]

This used to work fine prior to 7.4

surface = OCC.BRep.BRep_Tool.Surface(face)
surface_type = surface.GetObject().DynamicType().GetObject().Name()
if surface_type != "Geom_Plane":
    ...

In 7.4 DynamicType() returns an opaque SWIG object:

>>> surface.DynamicType()
<Swig Object of type 'opencascade::handle< Standard_Type > *' at 0x04903DB8>
>>>
>>> dir(surface.DynamicType())
['__class__', '__delattr__', '__dir__', '__doc__', '__eq__', '__format__', '__ge__', '__getattribute__', '__gt__', '__hash__', '__init__', '__init_subclass__', '__int__', '__le__', '__lt__', '__ne__', '__new__', '__reduce__', '__reduce_ex__', '__repr__', '__setattr__', '__sizeof__', '__str__', '__subclasshook__', 'acquire', 'append', 'disown', 'next', 'own']

I did notice that DownCast() returns None on "invalid" casts.

>>> Geom.Geom_Plane.DownCast(surface)
<class 'Geom_Plane'>
>>> repr(Geom.Geom_CylindricalSurface.DownCast(surface))
'None'

So there is a way to do type checking, but I tend to rely in my code quite a bit on the DynamicType() to be properly wrapped.

[tpaviot]

The Standard_Type class is explicitly excluded from the wrapper, for years I guess. Let me try to expose it and check if there still are issues.

[tpaviot]

Fixed by commits bb68a00 and c1e9d49