Hi,
I am looking for vtkAlgorithm derived classes in VTK that requires two or more non-optional inputs ?
Any recommendations ?
At this stage of my VTK study, I am not after repeatable inputs yet.
Cheers
Hi,
I am looking for vtkAlgorithm derived classes in VTK that requires two or more non-optional inputs ?
Any recommendations ?
At this stage of my VTK study, I am not after repeatable inputs yet.
Cheers
In a vtkAlgorithm you can override the FillInputPortInformation function to set port info like types, optional, required, etc. Here’s one with two input ports with types & one being optional.
In the header.
MyFilterSubclass() { SetNumberOfInputPorts(2); }
int FillInputPortInformation(int port, vtkInformation* info)
Later in the source
int MyFilterSubclass::FillInputPortInformation(int port, vtkInformation* info)
{
if (port == 0)
{
info->Set(vtkDataObject::DATA_TYPE_NAME(), "vtkPolyData");
return 1;
}
else if (port == 1)
{
info->Set(vtkDataObject::DATA_TYPE_NAME(), "vtkImageData");
info->Set(vtkAlgorithm::INPUT_IS_OPTIONAL(), 1); // true
return 1;
}
return 0;
}
I am not trying to write a new class, I want to find out if there are classes in the VTK source example that already requires 2 or more non-optional ports.