How to incorporate input field values in ProgrammableFilter plugin

Development
1

Hello,

I am working on the filter example in PluginsExamples

from paraview.util.vtkAlgorithm import *

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A filter example.

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@smproxy.filter()
@smproperty.input(name=“InputImage”, port_index=0)
@smproperty.stringvector(name=“PythonPath”, value=“C:\Users\mkih2\Work\my-tools”)
@smdomain.datatype(dataTypes=[“vtkImageData”], composite_data_supported=False)
class PythonCropImage(VTKPythonAlgorithmBase):
def init(self):
VTKPythonAlgorithmBase.init(self, nInputPorts=1, nOutputPorts=1, outputType=“vtkImageData”)

def FillInputPortInformation(self, port, info):
    info.Set(self.INPUT_REQUIRED_DATA_TYPE(), "vtkImageData")

    return 1

def RequestData(self, request, inInfoVec, outInfoVec):
    from vtkmodules.vtkCommonDataModel import vtkImageData
    from vtkmodules.numpy_interface import dataset_adapter as dsa

    input0 = dsa.WrapDataObject(vtkImageData.GetData(inInfoVec[0], 0))
    output = dsa.WrapDataObject(vtkImageData.GetData(outInfoVec, 0))

    from foo import bar

    param = 25
    bar(param)

    return 1

# TODO NOT WORKING (HOW TO GET THE VALUE IN REQUEST DATA ?)
@smproperty.intvector(name="ParamInt", default_values=25)
@smdomain.intrange(min=10, max=50)
def SetParamInt(self, x):
    self._realAlgorithm.SetParamInt(x)
    self.Modified()

I was successful add the smpdecorator for setting a custom python path (@smproperty.stringvector(name="PythonPath", value="C:\\Users\\mkih2\\Work\\my-tools"), for allowing the importing of functionality from external python code. However, in the example which is for a 2 input filter or the superquadric source example. It is not clear how get the value of param in the RequestData function ?

Thank you.

2

I was able to fix it by setting a variable name directly to the self object.

@smproperty.intvector(name=“ParamInt”, default_values=25)
@smdomain.intrange(min=10, max=50)
def SetParamInt(self, x):
self._param = x
self.Modified()

And access it in request data like so.

from foo import bar
param = self._param
bar(param)