> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] Behalf Of
> jelle
> Sent: Tuesday, April 26, 2005 12:31 PM
> To: python-list@python.org
> Subject: how to pass an array to a VB array via COM
>
>
> Hi,
>
> I'm trying to script Rhino -the nurbs modeller, not the server soft-
> via COM.
> Which is good fun, except i cant seem to pass arrays to the program.
> I suppose its expecting VB arrays, and is not to keen when i send a
> tuple:
>
> RS.AddCurve(((1,2,3),(4,5,6),(7,8,9)),3)
> ---
> Traceback (most recent call last):
> File "<input> ", line 1, in ?
> File "c:\Python23\lib\site-packages\jf\interface\RhinoScript.py",
> line 48,
> in AddCurve
> return self._ApplyTypes_(77, 1, (12, 0), ((12, 0), (12, 16)),
> 'AddCurve', None,vaPoints, vaDegree)
> File "c:\Python23\lib\site-packages\win32com\client\__init__.py",
> line
> 446, in _ApplyTypes_
> return self._get_good_object_(
> com_error: (-2147352567, 'Exception occurred.', (6, 'RhinoScript_m',
> 'Type
> mismatch in parameter. One-dimensional array required.', 'C:\\Program
> Files\\Rhinoceros 3.0\\RhinoScript_m.HLP', 393222, 0), None)
> ---
>
> This is somewhat puzzling, since when i define points in the
> application, these are returned as a tuple of tuples:
>
>
> >>>s = RS.GetPoints()
> >>>print s
> ((-7.0, -30.0, 0.0), (15.0, -24.0, 0.0), (-7.0, 12.0, 0.0), (14.0,
> 29.0,
> 0.0), (28.0, 10.0, 0.0), (20.0, 1.0, 0.0))
>
> I've been searching this list for a solution, but didnt find
> anything i
> could use. Any ideas?
>
> Cheers,
>
> Jelle
>
> --
> http://mail.python.org/mailman/listinfo/python-list
>
The problem you see here is the automatic calculation of the dimension for
SafeArrays in Pythoncom. The array shown above could be transported either as
a 2-dim Array (3x3) or as a 1-dim array (1x3) with elements which are also
1-dim
arrays. Since the automatic calculation always tries to find the highest
dimensionality
the Rhino program will get a 2-Dim array which it does not support.
In VB you can define the dimension of such a array in Python we must guess.
I'm just working on a PySafeArray implementation for PythonCom which should
give you also the opportunity to define the dimension via Python. Until then
you have no luck.
Stefan
--
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