/*=========================================================================

  Program:   Visualization Toolkit
  Module:    vtkRotationFilter.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 vtkRotationFilter - Duplicates a data set by rotation about an axis
// .SECTION Description
// The vtkRotationFilter duplicates a data set by rotation about one of the
// 3 axis of the dataset's reference.
// Since it converts data sets into unstructured grids, it is not efficient
// for structured data sets.
//
// .SECTION Thanks
// Theophane Foggia of The Swiss National Supercomputing Centre (CSCS)
// for creating and contributing this filter

#ifndef __vtkRotationFilter_h
#define __vtkRotationFilter_h

#include "vtkUnstructuredGridAlgorithm.h"

class VTK_GRAPHICS_EXPORT vtkRotationFilter : public vtkUnstructuredGridAlgorithm
{
public:
  static vtkRotationFilter *New(); 
  vtkTypeMacro(vtkRotationFilter, vtkUnstructuredGridAlgorithm);
  void PrintSelf(ostream &os, vtkIndent indent);
  
//BTX
  enum RotationAxis 
  {
    USE_X = 0,
    USE_Y = 1,
    USE_Z = 2
  };
//ETX

  // Description:
  // Set the axis of rotation to use. It is set by default to Z.
  vtkSetClampMacro(Axis, int, 0, 2);
  vtkGetMacro(Axis, int);
  void SetAxisToX() { this->SetAxis(USE_X); };
  void SetAxisToY() { this->SetAxis(USE_Y); };
  void SetAxisToZ() { this->SetAxis(USE_Z); };

  // Description:
  // Set the rotation angle to use.
  vtkSetMacro(Angle, double);
  vtkGetMacro(Angle, double);

  // Description:
  // Set the rotation center coordinates.
  vtkSetVector3Macro(Center,double);
  vtkGetVector3Macro(Center,double);

  // Description:
  // Set the number of copies to create. The source will be rotated N times
  // and a new polydata copy of the original created at each angular position
  // All copies will be appended to form a single output
  vtkSetMacro(NumberOfCopies, int);
  vtkGetMacro(NumberOfCopies, int);

  // Description:
  // If on (the default), copy the input geometry to the output. If off,
  // the output will only contain the rotation.
  vtkSetMacro(CopyInput, int);
  vtkGetMacro(CopyInput, int);
  vtkBooleanMacro(CopyInput, int);


protected:
  vtkRotationFilter();
  ~vtkRotationFilter();
  
  virtual int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *);
  virtual int FillInputPortInformation(int port, vtkInformation *info);

  int Axis;
  double Angle;
  double Center[3];
  int NumberOfCopies;
  int CopyInput;
  
private:
  vtkRotationFilter(const vtkRotationFilter&);  // Not implemented
  void operator=(const vtkRotationFilter&);  // Not implemented
};

#endif


