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/*=========================================================================
Program: Visualization Toolkit
Module: vtkPVExtractSelection.h
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
// .NAME vtkPVExtractSelection - Adds a two more output ports to vtkExtractSelection,
// the second port contains an id selection and the third is simply the input
// selection.
// .SECTION Description
// vtkPVExtractSelection adds a second port to vtkExtractSelection.
// \li Output port 0 -- is the output from the superclass. It's nothing but the
// extracted dataset.
//
// \li Output port 1 -- is a vtkSelection consisting of indices of the cells/points
// extracted. If vtkSelection used as the input to this filter is of the field
// type vtkSelection::CELL, then the output vtkSelection has both the cell
// indicides as well as point indices of the cells/points that were extracted.
// If input field type is vtkSelection::POINT, then the output vtkSelection only
// has the indicies of the points that were extracted.
// This second output is useful for correlating particular
// cells in the subset with the original data set. This is used, for instance,
// by Chart representations to show selections.
//
// \li Output port 2 -- is simply the input vtkSelection. We currently use this
// for Histogram View/Representation. Since that view cannot show arbitrary ID
// based selections, it needs to get to the original vtkSelection to determine
// if the particular selection can be shown in the view at all.
// .SECTION See Also
// vtkExtractSelection vtkSelection
#ifndef vtkPVExtractSelection_h
#define vtkPVExtractSelection_h
#include "vtkPVClientServerCoreCoreModule.h" //needed for exports
#include "vtkExtractSelection.h"
class vtkSelectionNode;
class VTKPVCLIENTSERVERCORECORE_EXPORT vtkPVExtractSelection : public vtkExtractSelection
{
public:
vtkTypeMacro(vtkPVExtractSelection,vtkExtractSelection);
void PrintSelf(ostream& os, vtkIndent indent);
static const int OUTPUT_PORT_EXTRACTED_DATASET = 0;
static const int OUTPUT_PORT_SELECTION_IDS = 1;
static const int OUTPUT_PORT_SELECTION_ORIGINAL = 2;
// Description:
// Constructor
static vtkPVExtractSelection *New();
// Description:
// Removes all inputs from input port 1.
void RemoveAllSelectionsInputs()
{ this->SetInputConnection(1, 0); }
protected:
vtkPVExtractSelection();
~vtkPVExtractSelection();
//sets up empty output dataset
virtual int RequestDataObject(vtkInformation* request,
vtkInformationVector** inputVector,
vtkInformationVector* outputVector);
//runs the algorithm and fills the output with results
virtual int RequestData(vtkInformation *,
vtkInformationVector **,
vtkInformationVector *);
virtual int FillOutputPortInformation(int port, vtkInformation* info);
vtkSelectionNode* LocateSelection(unsigned int level,
unsigned int index, vtkSelection* sel);
vtkSelectionNode* LocateSelection(unsigned int composite_index, vtkSelection* sel);
private:
vtkPVExtractSelection(const vtkPVExtractSelection&); // Not implemented.
void operator=(const vtkPVExtractSelection&); // Not implemented.
class vtkSelectionNodeVector;
void RequestDataInternal(vtkSelectionNodeVector& outputs,
vtkDataObject* dataObjectOutput,
vtkSelectionNode* sel);
// Returns the combined content type for the selection.
int GetContentType(vtkSelection* sel);
};
#endif
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