/Users/kitware/Dashboards/MyTests/VTK_BLD_Release_docs/Utilities/Doxygen/dox/Infovis/Layout/vtkIncrementalForceLayout.h

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

  Program:   Visualization Toolkit
  Module:    vtkScatterPlotMatrix.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.

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

#ifndef vtkIncrementalForceLayout_h
#define vtkIncrementalForceLayout_h

#include "vtkInfovisLayoutModule.h" // For export macro
#include "vtkObject.h"

#include "vtkVector.h" // For vector ivars

class vtkGraph;

class VTKINFOVISLAYOUT_EXPORT vtkIncrementalForceLayout : public vtkObject
{
public:
  vtkTypeMacro(vtkIncrementalForceLayout, vtkObject);
  virtual void PrintSelf(ostream &os, vtkIndent indent);
  static vtkIncrementalForceLayout* New();


  virtual void SetGraph(vtkGraph* g);
  vtkGetObjectMacro(Graph, vtkGraph);


  virtual void SetFixed(vtkIdType fixed);
  vtkGetMacro(Fixed, vtkIdType);


  vtkSetMacro(Alpha, float);
  vtkGetMacro(Alpha, float);


  vtkSetMacro(Theta, float);
  vtkGetMacro(Theta, float);


  vtkSetMacro(Charge, float);
  vtkGetMacro(Charge, float);


  vtkSetMacro(Strength, float);
  vtkGetMacro(Strength, float);


  vtkSetMacro(Distance, float);
  vtkGetMacro(Distance, float);


  vtkSetMacro(Gravity, float);
  vtkGetMacro(Gravity, float);


  vtkSetMacro(Friction, float);
  vtkGetMacro(Friction, float);

//BTX

  virtual void SetGravityPoint(const vtkVector2f &point)
    { this->GravityPoint = point; }
  virtual vtkVector2f GetGravityPoint()
    { return this->GravityPoint; }
//ETX

  void UpdatePositions();

protected:
  vtkIncrementalForceLayout();
  ~vtkIncrementalForceLayout();

  vtkGraph* Graph;
  class Implementation;
  Implementation* Impl;
  vtkIdType Fixed;
  vtkVector2f GravityPoint;
  float Alpha;
  float Theta;
  float Charge;
  float Strength;
  float Distance;
  float Gravity;
  float Friction;

private:
  vtkIncrementalForceLayout(const vtkIncrementalForceLayout &); // Not implemented.
  void operator=(const vtkIncrementalForceLayout &); // Not implemented.
};
#endif