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

  Program:   Visualization Toolkit
  Module:    vtkLineSource.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   vtkLineSource
 * @brief   create a line defined by two end points
 *
 * vtkLineSource is a source object that creates a polyline defined by
 * two endpoints. The number of segments composing the polyline is
 * controlled by setting the object resolution.
 *
 * @par Thanks:
 * This class was extended by Philippe Pebay, Kitware SAS 2011, to support
 * broken lines as well as simple lines.
*/

#ifndef vtkLineSource_h
#define vtkLineSource_h

#include "vtkFiltersSourcesModule.h" // For export macro
#include "vtkPolyDataAlgorithm.h"

class vtkPoints;

class VTKFILTERSSOURCES_EXPORT vtkLineSource : public vtkPolyDataAlgorithm
{
public:
  static vtkLineSource *New();
  vtkTypeMacro(vtkLineSource,vtkPolyDataAlgorithm);
  void PrintSelf(ostream& os, vtkIndent indent) VTK_OVERRIDE;

  //@{
  /**
   * Set position of first end point.
   */
  vtkSetVector3Macro(Point1,double);
  vtkGetVectorMacro(Point1,double,3);
  void SetPoint1(float[3]);
  //@}

  //@{
  /**
   * Set position of other end point.
   */
  vtkSetVector3Macro(Point2,double);
  vtkGetVectorMacro(Point2,double,3);
  void SetPoint2(float[3]);
  //@}

  //@{
  /**
   * Set/Get the list of points defining a broken line
   */
  virtual void SetPoints(vtkPoints*);
  vtkGetObjectMacro(Points,vtkPoints);
  //@}

  //@{
  /**
   * Divide line into Resolution number of pieces.
   */
  vtkSetClampMacro(Resolution,int,1,VTK_INT_MAX);
  vtkGetMacro(Resolution,int);
  //@}

  //@{
  /**
   * Set/get the desired precision for the output points.
   * vtkAlgorithm::SINGLE_PRECISION - Output single-precision floating point.
   * vtkAlgorithm::DOUBLE_PRECISION - Output double-precision floating point.
   */
  vtkSetMacro(OutputPointsPrecision,int);
  vtkGetMacro(OutputPointsPrecision,int);
  //@}

protected:
  vtkLineSource(int res=1);
  ~vtkLineSource() VTK_OVERRIDE;

  int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *) VTK_OVERRIDE;
  int RequestInformation(vtkInformation *, vtkInformationVector **, vtkInformationVector *) VTK_OVERRIDE;
  double Point1[3];
  double Point2[3];
  int Resolution;
  int OutputPointsPrecision;

  /**
   * The list of points defining a broken line
   * NB: The Point1/Point2 definition of a single line segment is used by default
   */
  vtkPoints* Points;

private:
  vtkLineSource(const vtkLineSource&) VTK_DELETE_FUNCTION;
  void operator=(const vtkLineSource&) VTK_DELETE_FUNCTION;
};

#endif