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/*=========================================================================
Program: Visualization Toolkit
Module: vtkArrayWeights.h
-------------------------------------------------------------------------
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.
-------------------------------------------------------------------------
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 vtkArrayWeights
* @brief Stores a collection of weighting factors.
*
*
* vtkArrayWeights provides storage for a collection of weights to be
* used when merging / interpolating N-way arrays. Convenience
* constructors are provided for working with one, two, three, and four
* weighting factors. For arbitrary collections of weights, use
* SetCount() and operator[] to assign values.
*
* vtkArrayWeights is most commonly used with the vtkInterpolate()
* function to compute weighted sums of vtkArray objects.
*
* @sa
* vtkArray, vtkArraySlices
*
* @par Thanks:
* Developed by Timothy M. Shead (tshead@sandia.gov) at Sandia National
* Laboratories.
*/
#ifndef vtkArrayWeights_h
#define vtkArrayWeights_h
#include "vtkCommonCoreModule.h" // For export macro
#include "vtkSystemIncludes.h"
class vtkArrayWeightsStorage; // pimpl
class VTKCOMMONCORE_EXPORT vtkArrayWeights
{
public:
/**
* Create an empty collection of weights
*/
vtkArrayWeights();
/**
* Copy the weights from another object.
*/
vtkArrayWeights(const vtkArrayWeights& other);
/**
* Create a collection containing one weight.
*/
vtkArrayWeights(double i);
/**
* Create a collection containing two weights.
*/
vtkArrayWeights(double i, double j);
/**
* Create a collection containing three weights.
*/
vtkArrayWeights(double i, double j, double k);
/**
* Create a collection containing four weights.
*/
vtkArrayWeights(double i, double j, double k, double l);
/**
* Destructor.
*/
~vtkArrayWeights();
/**
* Returns the number of weights stored in this container.
*/
vtkIdType GetCount() const;
/**
* Sets the number of weights stored in this container. Note that each
* weight will be reset to 0.0 after calling SetCount(), use operator[]
* to assign the desired value for each weight.
*/
void SetCount(vtkIdType count);
/**
* Accesses the i-th weight in the collection.
*/
double& operator[](vtkIdType);
/**
* Accesses the i-th weight in the collection.
*/
const double& operator[](vtkIdType) const;
/**
* Assignment operator.
*/
vtkArrayWeights& operator=(const vtkArrayWeights& other);
protected:
vtkArrayWeightsStorage *Storage;
};
#endif
// VTK-HeaderTest-Exclude: vtkArrayWeights.h
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