[Paraview] pythonnurbs inside ProgrammableFilter

[Berk Geveci]

I am guessing somehow the arguments passed to makeCircle are getting
clobbered. Can you post you Python code?

-berk

On Fri, Jan 8, 2010 at 4:12 AM, Oliver Borm <oli.borm at web.de> wrote:
> Hello,
>
> I am using pythonnurbs from http://pypi.python.org/pypi/PythonNURBS in
> conjunction with the python bindings from vtk. As a standalone script it
> works perfectly, but if I want to use it inside paraview with the
> ProgrammableFilter it just works once a time. After that some errors
> occur. Here is a simple python test code:
>
> from pythonnurbs import NurbsCurve, NurbsPoint
> curve=NurbsCurve.NurbsCurved()
> curve.makeCircle(NurbsPoint.Point3Dd(0.0,0.0,0.0), 100.0)
> u = 0.5
> print curve.pointAt(u).getx(), curve.pointAt(u).gety(),
> curve.pointAt(u).getz()
>
> The following output is printed:
>
> -100.0 0.0 0.0
>
>
> If one changes for example:
> u = 0.25
>
> and want to re-execute the ProgrammableFilter again, the following error
> occured
>
> Traceback (most recent call last):
>
> File "<string>", line 23, in <module>
>
> File "<string>", line 5, in RequestData
>
> File "/usr/lib64/python2.6/site-packages/pythonnurbs/NurbsCurve.py",
> line 277, in makeCircle
>
> def makeCircle(*args): return _NurbsCurve.NurbsCurved_makeCircle(*args)
>
> NotImplementedError: Wrong number of arguments for overloaded function
> 'NurbsCurved_makeCircle'.
>
> Possible C/C++ prototypes are:
>
> makeCircle(PLib::NurbsCurve< double,3 > *,PLib::Point_nD< double,3 >
> const &,PLib::Point_nD< double,3 > const &,PLib::Point_nD< double,3 >
> const &,double,double,double)
>
> makeCircle(PLib::NurbsCurve< double,3 > *,PLib::Point_nD< double,3 >
> const &,double,double,double)
>
> makeCircle(PLib::NurbsCurve< double,3 > *,PLib::Point_nD< double,3 >
> const &,double)
>
>
> while running the same code a second time in a normal python shell, the
> output looks like the following:
> 0.0 100.0 0.0
>
> One has to restart paraview and the python code in the
> ProgrammableFilter works as expected (once a time). The error message is
> not very helpful, as it says that this method is not implemented in the
> way I'm using it. But that is not correct. Does anybody has an idea
> what's the real problem? At first one could expect the problem is in
> pythonnurbs (maybe it is, but not in the way the error message says),
> but as the code works once a time, why does it not works twice?
>
> Best regards,
> Oliver Borm
>
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