It doesn't have to be be a composite data algorithm or operate on
composite data. There are two options available without delving into
composite data, 1) make multiple inputs, 2) make a single input repeatable.
in option 1)
class vtkMyFilter : public vtkImageDataAlgorithm
{
...
};
vtkMyFilter::vtkMyFilter()
{
...
this->SetNumberOfInputPorts(3);
}
or in option 2)
class vtkMyFilter : public vtkImageDataAlgorithm
{
...
};
vtkMyFilter::vtkMyFilter()
{
...
this->SetNumberOfInputPorts(1);
}
int vtkMyFilter::FillInputPortInformation(int port, vtkInformation
*info)
{
...
info->Set(vtkAlgorithm::INPUT_REQUIRED_DATA_TYPE(), "vtkImageData");
info->Set(vtkAlgorithm::INPUT_IS_REPEATABLE(),1);
}
during request data in option 1) you get a vector of information objects
each with one dataset, in 2) you get a vector of datasets in one
information object. The UI differs in the way the inputs are selected,
option 1) will be more clear that 3 are required.
This is explained (much better) in the user guide along with composite
data algorithm.
Michael Jackson wrote:
I have an algorithm that needs to take 3 inputs. All three will be
vtkImageData objects using Floating point values. I was wondering,
before I even start anything, does the first data set in the pipeline
have to be a composite data set so if I apply the filter I can assign
specific "pieces" of the composite data set as inputs to the filter I
am designing? What would be an example of a filter that takes multiple
inputs that I could look at as an example?
Thanks for any help.
___________________________________________________________
Mike Jackson www.bluequartz.net
Principal Software Engineer [email protected]
BlueQuartz Software Dayton, Ohio
_______________________________________________
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
_______________________________________________
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
