vtkImagePointIterator.h

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/*=========================================================================
 
  Program:   Visualization Toolkit
  Module:    vtkImagePointIterator.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 vtkImagePointIterator_h
#define vtkImagePointIterator_h
 
#include "vtkImagePointDataIterator.h"
 
class VTKIMAGINGCORE_EXPORT vtkImagePointIterator : public vtkImagePointDataIterator
{
public:
  vtkImagePointIterator();
 
  vtkImagePointIterator(vtkImageData* image, const int extent[6] = nullptr,
    vtkImageStencilData* stencil = nullptr, vtkAlgorithm* algorithm = nullptr, int threadId = 0);
 
  void Initialize(vtkImageData* image, const int extent[6] = nullptr,
    vtkImageStencilData* stencil = nullptr, vtkAlgorithm* algorithm = nullptr, int threadId = 0);
 
 
  void NextSpan()
  {
    this->vtkImagePointDataIterator::NextSpan();
    this->UpdatePosition();
  }
 
 
  void Next()
  {
    if (++(this->Id) == this->SpanEnd)
    {
      this->NextSpan();
    }
    else
    {
      this->Index[0]++;
      this->Position[0] = this->Origin[0] + this->Index[0] * this->Spacing[0];
    }
  }
 
  bool IsAtEnd() { return this->vtkImagePointDataIterator::IsAtEnd(); }
 
  double* GetPosition() VTK_SIZEHINT(3) { return this->Position; }
 
 
  void GetPosition(double x[3])
  {
    x[0] = this->Position[0];
    x[1] = this->Position[1];
    x[2] = this->Position[2];
  }
 
 
  void GetPosition(float x[3])
  {
    x[0] = this->Position[0];
    x[1] = this->Position[1];
    x[2] = this->Position[2];
  }
 
protected:
 
  void UpdatePosition()
  {
    this->Position[0] = this->Origin[0] + this->Index[0] * this->Spacing[0];
    this->Position[1] = this->Origin[1] + this->Index[1] * this->Spacing[1];
    this->Position[2] = this->Origin[2] + this->Index[2] * this->Spacing[2];
  }
 
  double Origin[3];
  double Spacing[3];
  double Position[3];
};
 
#endif
// VTK-HeaderTest-Exclude: vtkImagePointIterator.h