VTK
vtkImagePointIterator.h
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1 /*=========================================================================
2 
3  Program: Visualization Toolkit
4  Module: vtkImagePointIterator.h
5 
6  Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
7  All rights reserved.
8  See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
9 
10  This software is distributed WITHOUT ANY WARRANTY; without even
11  the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
12  PURPOSE. See the above copyright notice for more information.
13 
14 =========================================================================*/
34 #ifndef vtkImagePointIterator_h
35 #define vtkImagePointIterator_h
36 
38 
39 class VTKIMAGINGCORE_EXPORT vtkImagePointIterator :
41 {
42 public:
47 
58  const int extent[6] = nullptr,
59  vtkImageStencilData *stencil=nullptr,
60  vtkAlgorithm *algorithm=nullptr,
61  int threadId=0);
62 
66  void Initialize(vtkImageData *image,
67  const int extent[6] = nullptr,
68  vtkImageStencilData *stencil=nullptr,
69  vtkAlgorithm *algorithm=nullptr,
70  int threadId=0);
71 
73 
78  void NextSpan()
79  {
81  this->UpdatePosition();
82  }
84 
86 
91  void Next()
92  {
93  if (++(this->Id) == this->SpanEnd)
94  {
95  this->NextSpan();
96  }
97  else
98  {
99  this->Index[0]++;
100  this->Position[0] = this->Origin[0] + this->Index[0]*this->Spacing[0];
101  }
102  }
104 
108  bool IsAtEnd()
109  {
110  return this->vtkImagePointDataIterator::IsAtEnd();
111  }
112 
117  {
118  return this->Position;
119  }
120 
122 
125  void GetPosition(double x[3])
126  {
127  x[0] = this->Position[0];
128  x[1] = this->Position[1];
129  x[2] = this->Position[2];
130  }
132 
134 
137  void GetPosition(float x[3])
138  {
139  x[0] = this->Position[0];
140  x[1] = this->Position[1];
141  x[2] = this->Position[2];
142  }
144 
145 protected:
146 
148 
152  {
153  this->Position[0] = this->Origin[0] + this->Index[0]*this->Spacing[0];
154  this->Position[1] = this->Origin[1] + this->Index[1]*this->Spacing[1];
155  this->Position[2] = this->Origin[2] + this->Index[2]*this->Spacing[2];
156  }
158 
159  double Origin[3];
160  double Spacing[3];
161  double Position[3];
162 };
163 
164 #endif
165 // VTK-HeaderTest-Exclude: vtkImagePointIterator.h
bool IsAtEnd()
Test if the iterator has completed iterating over the entire extent.
void UpdatePosition()
Helper method to update the position coordinate from the index.
iterate over point data in an image.
void Next()
Move to the next position (rather than directly to the next span).
double * GetPosition()
Get the current position.
void NextSpan()
Move the iterator to the beginning of the next span.
Superclass for all sources, filters, and sinks in VTK.
Definition: vtkAlgorithm.h:59
void Initialize(vtkImageData *image, const int extent[6]=nullptr, vtkImageStencilData *stencil=nullptr, vtkAlgorithm *algorithm=nullptr, int threadId=0)
Initialize an iterator.
efficient description of an image stencil
topologically and geometrically regular array of data
Definition: vtkImageData.h:45
#define VTK_SIZEHINT(...)
iterate over all data points in an image.
bool IsAtEnd()
Test if the iterator has completed iterating over the entire extent.
void GetPosition(float x[3])
Get the current position and place it in the provided array.
void GetPosition(double x[3])
Get the current position and place it in the provided array.
void NextSpan()
Move the iterator to the beginning of the next span.