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 _______________________________________________ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the ParaView Wiki at: http://paraview.org/Wiki/ParaView Follow this link to subscribe/unsubscribe: http://www.paraview.org/mailman/listinfo/paraview
