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/*=========================================================================
Program: Visualization Toolkit
Module: vtkCirclePackLayoutStrategy.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.
-------------------------------------------------------------------------*/
// .NAME vtkCirclePackLayoutStrategy - abstract superclass for all circle packing
// layout strategies.
//
// .SECTION Description
// All subclasses of this class perform a circle packing layout on a vtkTree.
// This involves assigning a circle to each vertex in the tree,
// and placing that information in a data array with three components per
// tuple representing (Xcenter, Ycenter, Radius).
//
// Instances of subclasses of this class may be assigned as the layout
// strategy to vtkCirclePackLayout
//
// .SECTION Thanks
// Thanks to Thomas Otahal from Sandia National Laboratories
// for help developing this class.
#ifndef vtkCirclePackLayoutStrategy_h
#define vtkCirclePackLayoutStrategy_h
#include "vtkInfovisLayoutModule.h" // For export macro
#include "vtkObject.h"
class vtkTree;
class vtkDataArray;
class VTKINFOVISLAYOUT_EXPORT vtkCirclePackLayoutStrategy : public vtkObject
{
public:
vtkTypeMacro(vtkCirclePackLayoutStrategy,vtkObject);
void PrintSelf(ostream& os, vtkIndent indent);
// Description:
// Perform the layout of the input tree, and store the circle
// bounds of each vertex as a tuple in a data array.
// (Xcenter, Ycenter, Radius).
//
// The sizeArray may be NULL, or may contain the desired
// size of each vertex in the tree.
virtual void Layout(vtkTree *inputTree, vtkDataArray *areaArray,
vtkDataArray* sizeArray) = 0;
protected:
vtkCirclePackLayoutStrategy();
~vtkCirclePackLayoutStrategy();
private:
vtkCirclePackLayoutStrategy(const vtkCirclePackLayoutStrategy&); // Not implemented.
void operator=(const vtkCirclePackLayoutStrategy&); // Not implemented.
};
#endif
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