text: /*=========================================================================
  
    Program:   Visualization Toolkit
    Module:    vtkWarpVector.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.
  
  =========================================================================*/
  /**
   * @class   vtkWarpVector
   * @brief   deform geometry with vector data
   *
   * vtkWarpVector is a filter that modifies point coordinates by moving
   * points along vector times the scale factor. Useful for showing flow
   * profiles or mechanical deformation.
   *
   * The filter passes both its point data and cell data to its output.
   */
  
  #ifndef vtkWarpVector_h
  #define vtkWarpVector_h
  
  #include "vtkFiltersGeneralModule.h" // For export macro
  #include "vtkPointSetAlgorithm.h"
  
  class VTKFILTERSGENERAL_EXPORT vtkWarpVector : public vtkPointSetAlgorithm
  {
  public:
    ///@{
    /**
     * Standard methods for instantiation, obtaining type information,
     * and printing.
     */
    static vtkWarpVector* New();
    vtkTypeMacro(vtkWarpVector, vtkPointSetAlgorithm);
    void PrintSelf(ostream& os, vtkIndent indent) override;
    ///@}
  
    ///@{
    /**
     * Specify value to scale displacement.
     */
    vtkSetMacro(ScaleFactor, double);
    vtkGetMacro(ScaleFactor, double);
    ///@}
  
    ///@{
    /**
     * Set/get the desired precision for the output points type. By default
     * (DEFAULT_PRECISION) the output type is the same as the input points
     * type. Otherwise, specify the precision as SINGLE_PRECISION or
     * DOUBLE_PRECISION.
     */
    vtkSetMacro(OutputPointsPrecision, int);
    vtkGetMacro(OutputPointsPrecision, int);
    ///@}
  
    int FillInputPortInformation(int port, vtkInformation* info) override;
  
  protected:
    vtkWarpVector();
    ~vtkWarpVector() override;
  
    int RequestDataObject(vtkInformation* request, vtkInformationVector** inputVector,
      vtkInformationVector* outputVector) override;
    int RequestData(vtkInformation*, vtkInformationVector**, vtkInformationVector*) override;
    double ScaleFactor;
    int OutputPointsPrecision;
  
  private:
    vtkWarpVector(const vtkWarpVector&) = delete;
    void operator=(const vtkWarpVector&) = delete;
  };
  
  #endif
  