vtkSquarifyLayoutStrategy.h

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

  Program:   Visualization Toolkit
  Module:    vtkSquarifyLayoutStrategy.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.

=========================================================================*/
/*-------------------------------------------------------------------------
  Copyright 2008 Sandia Corporation.
  Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
  the U.S. Government retains certain rights in this software.
-------------------------------------------------------------------------*/
#ifndef vtkSquarifyLayoutStrategy_h
#define vtkSquarifyLayoutStrategy_h

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

class vtkIdList;

class VTKINFOVISLAYOUT_EXPORT vtkSquarifyLayoutStrategy : public vtkTreeMapLayoutStrategy
{
public:
  static vtkSquarifyLayoutStrategy *New();
  vtkTypeMacro(vtkSquarifyLayoutStrategy,vtkTreeMapLayoutStrategy);
  void PrintSelf(ostream& os, vtkIndent indent) override;

  void Layout(
      vtkTree* inputTree,
      vtkDataArray* coordsArray,
      vtkDataArray* sizeArray) override;

protected:
  vtkSquarifyLayoutStrategy();
  ~vtkSquarifyLayoutStrategy() override;

private:

  void LayoutChildren(
    vtkTree *tree,
    vtkDataArray *coordsArray,
    vtkDataArray *sizeArray,
    vtkIdType nchildren,
    vtkIdType parent,
    vtkIdType begin,
    float minX, float maxX,
    float minY, float maxY);

  vtkSquarifyLayoutStrategy(const vtkSquarifyLayoutStrategy&) = delete;
  void operator=(const vtkSquarifyLayoutStrategy&) = delete;
};

#endif