[vtkusers] image algorithm with multiple inputs

[Michael Jackson]

In the constructor set:
   this->SetNumberOfInputPorts(0);

to what ever you need.

The over ride:

//  
-----------------------------------------------------------------------------
//
//  
-----------------------------------------------------------------------------
int YourFilterClass::FillInputPortInformation(int port ,  
vtkInformation *info)
{
if (port == 0)
   info->Set(vtkAlgorithm::INPUT_REQUIRED_DATA_TYPE(), "vtkDataSet");

if (port == 1)
    info->Set...
   return 1;
}

If all the inputs are the same then you can do without the if (port  
== .. ) lines.

Hope that helps.
_________________________________________________________
Mike Jackson                  mike.jackson at bluequartz.net
BlueQuartz Software                    www.bluequartz.net
Principal Software Engineer                  Dayton, Ohio



On Jul 28, 2009, at 2:22 PM, Dominik Szczerba wrote:

> I want to write an image manipulation algorithm taking a few inputs.  
> Of course I can hack them in by custom AddInput() function but was  
> actually wondering how to do it the right VTK way. Any hints where  
> to start are appreciated.
>
> with regards,
> Dominik
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