vtkCirclePackLayout.h

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

 Program:   Visualization Toolkit
 Module:    vtkCirclePackLayout.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 vtkCirclePackLayout_h
#define vtkCirclePackLayout_h

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

class vtkCirclePackLayoutStrategy;
class vtkDoubleArray;
class vtkDataArray;
class vtkTree;

class VTKINFOVISLAYOUT_EXPORT vtkCirclePackLayout : public vtkTreeAlgorithm
{
public:
    static vtkCirclePackLayout *New();

    vtkTypeMacro(vtkCirclePackLayout,vtkTreeAlgorithm);
    void PrintSelf(ostream& os, vtkIndent indent) override;


    vtkGetStringMacro(CirclesFieldName);
    vtkSetStringMacro(CirclesFieldName);

    virtual void SetSizeArrayName(const char* name)
    { this->SetInputArrayToProcess(0, 0, 0, vtkDataObject::FIELD_ASSOCIATION_VERTICES, name); }


    vtkGetObjectMacro(LayoutStrategy, vtkCirclePackLayoutStrategy);
    void SetLayoutStrategy(vtkCirclePackLayoutStrategy * strategy);

    vtkIdType FindVertex(double pnt[2], double *cinfo=nullptr);

    void GetBoundingCircle(vtkIdType id, double *cinfo);

    vtkMTimeType GetMTime() override;

protected:
    vtkCirclePackLayout();
    ~vtkCirclePackLayout() override;

    char * CirclesFieldName;
    vtkCirclePackLayoutStrategy* LayoutStrategy;

    int RequestData(vtkInformation *, vtkInformationVector **, vtkInformationVector *) override;

private:

    vtkCirclePackLayout(const vtkCirclePackLayout&) = delete;
    void operator=(const vtkCirclePackLayout&) = delete;
    void prepareSizeArray(vtkDoubleArray* mySizeArray,
                          vtkTree* tree);
};

#endif