[vtk-developers] Re: [vtkusers] Unconnected filter(s) causing seg faults

[Charl P. Botha]

Berk Geveci wrote:
>   if (this->NumberOfInputs < this->NumberOfRequiredInputs)
>     {
>     vtkErrorMacro(<< "At least " << this->NumberOfRequiredInputs << "
> inputs are required but only " << this->NumberOfInputs << " are
> specified");
>     }
>   else
>   ...

Berk,

Do I understand correctly that each filter should keep NumberOfInputs up 
to date according to what happens during a SetInput()?  So, if 
SetInput() is called with a non-null input on a single-input filter, it 
should set NumberOfInputs to 1, and if SetInput() is called on that same 
filter with null, then NumberOfInputs should be explicitly set to 0?

Thanks,
Charl

-- 
charl p. botha http://cpbotha.net/ http://visualisation.tudelft.nl/