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/*=========================================================================
Program: Visualization Toolkit
Module: $RCSfile: vtkReverseSense.h,v $
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 vtkReverseSense - reverse the ordering of polygonal cells and/or vertex normals
// .SECTION Description
//
// vtkReverseSense is a filter that reverses the order of polygonal cells
// and/or reverses the direction of point and cell normals. Two flags are
// used to control these operations. Cell reversal means reversing the order
// of indices in the cell connectivity list. Normal reversal means
// multiplying the normal vector by -1 (both point and cell normals,
// if present).
// .SECTION Caveats
// Normals can be operated on only if they are present in the data.
#ifndef __vtkReverseSense_h
#define __vtkReverseSense_h
#include "vtkPolyDataAlgorithm.h"
class VTK_GRAPHICS_EXPORT vtkReverseSense : public vtkPolyDataAlgorithm
{
public:
vtkTypeRevisionMacro(vtkReverseSense,vtkPolyDataAlgorithm);
void PrintSelf(ostream& os, vtkIndent indent);
// Description:
// Construct object so that behavior is to reverse cell ordering and
// leave normal orientation as is.
static vtkReverseSense *New();
// Description:
// Flag controls whether to reverse cell ordering.
vtkSetMacro(ReverseCells,int);
vtkGetMacro(ReverseCells,int);
vtkBooleanMacro(ReverseCells,int);
// Description:
// Flag controls whether to reverse normal orientation.
vtkSetMacro(ReverseNormals,int);
vtkGetMacro(ReverseNormals,int);
vtkBooleanMacro(ReverseNormals,int);
protected:
vtkReverseSense();
~vtkReverseSense() {};
// Usual data generation method
int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *);
int ReverseCells;
int ReverseNormals;
private:
vtkReverseSense(const vtkReverseSense&); // Not implemented.
void operator=(const vtkReverseSense&); // Not implemented.
};
#endif
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