Hi Peter, yes, this works fine. We used to walk through a tree of Products collecting all position matrizes, on the Measurable-object to get the points of a line and other stuff. And yes, you pass the object (product, measurable, etc.) to the Evaluate function.
Although it would be much better to be able to use Arrays as Input/Output-parameters. Regards Andreas Peter Enenkel schrieb am 19.02.2017 um 20:38: > Hello Andreas, > > thanks for this workaround suggestion. Do you know if this will work if I > want to evaluate something > context sensitive? I.E. Instead of evaluating something in the global context > like the previously > mentioned /CATIA.ActiveProduct.Position.//GetComponents(components)/ which > would refer to the > toplevel element, I want to use Python to navigate to some other /Product > /and then pass that to the > VBScript to call /someproduct.//Position.GetComponents(components). /Can I > simply pass a Python COM > Object to /CATIA.SystemService.Evaluate/ as a parameter? > > I will definitely try this on Monday. > > An other idea I came up over the weekend is using the VARIANT type, like it > is described here > <http://docs.activestate.com/activepython/3.4/pywin32/html/com/win32com/HTML/variant.html> > do you > think that is a viable option, or am I misunderstanding the purpose of this > construct? > > best regards > Peter Enenkel > > 2017-02-19 16:23 GMT+01:00 Andreas Holtz <a.ho...@gmx.net > <mailto:a.ho...@gmx.net>>: > > Hi Peter, > > >From Python call Catia.SystemService.Evaluate() and hand over a VB > script that does what you need > but returns an Array. > > This works for all CATIA methods that use an Array as > Input/Output-parameter. > > Regards > > Andreas > > > Peter Enenkel schrieb am 17.02.2017 um 23:29: > > Hello All, > > > > > > I'm trying to read some data from CATIA v5 (which is an older CAD > application) via its COM server. > > Overall it works rather well, even if I'm fairly new to COM > communication. > > > > Nevertheless I have run into a problem: One specific function > *GetComponents * is supposed to > return > > its results via an array passed by reference. As far as I can tell it > is exactly the same problem as > > in > (1)https://mail.python.org/pipermail/python-win32/2002-November/000562.html > <https://mail.python.org/pipermail/python-win32/2002-November/000562.html> > > > <https://mail.python.org/pipermail/python-win32/2002-November/000562.html > > <https://mail.python.org/pipermail/python-win32/2002-November/000562.html>> > and > > (2)https://mail.python.org/pipermail/python-win32/2014-July/013234.html > <https://mail.python.org/pipermail/python-win32/2014-July/013234.html> > > <https://mail.python.org/pipermail/python-win32/2014-July/013234.html > <https://mail.python.org/pipermail/python-win32/2014-July/013234.html>> > unfortunately there doesn't > > appear to be a solution as of yet. > > > > The python call looks something like this > > a = list(range(0,12)) > > b = catapp.ActiveProduct.Position.GetComponents(a) > > print(a) # outputs (0,1,2,3,4,5,6,7,8,9,10,11) instead of the actual > values > > The equivalent VBScript code is > > Dim a(11) As Float > > CATIA.ActiveProduct.Position.GetComponents(a) > > MsgBox a(0) & ", " & a(1) & ... > > The VBScript works as intended, the python one just passes the array > back out unmodified. > > > > As both other threads state: The Position object above has two methods > *GetComponents *and > > *SetComponents *that each take a *CATSafeArrayVariant *as an argument. > This *CATSafeArrayVariant > > *should in this case be a one-dimensional array of real values. > CATSafeArrayVariant is a > typedef for > > a *CATVariant *which itself is *typedef any CATVariant*. > > > > Any help would be appreciated. As stated above I haven't done much with > COM, but otherwise I'm > > reasonably computer savvy and know my way around python. Obviously > Catia is a commercial application > > but I have access to the .tlb file if that helps. > > > > > > best regards > > Peter Enenkel > > > > > > _______________________________________________ > > python-win32 mailing list > > python-win32@python.org <mailto:python-win32@python.org> > > https://mail.python.org/mailman/listinfo/python-win32 > <https://mail.python.org/mailman/listinfo/python-win32> > > > _______________________________________________ > python-win32 mailing list > python-win32@python.org <mailto:python-win32@python.org> > https://mail.python.org/mailman/listinfo/python-win32 > <https://mail.python.org/mailman/listinfo/python-win32> > > _______________________________________________ python-win32 mailing list python-win32@python.org https://mail.python.org/mailman/listinfo/python-win32
