VTK  9.0.1
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 =========================================================================*/
31 #ifndef vtkImagePointIterator_h
32 #define vtkImagePointIterator_h
33 
35 
36 class VTKIMAGINGCORE_EXPORT vtkImagePointIterator : public vtkImagePointDataIterator
37 {
38 public:
43 
53  vtkImagePointIterator(vtkImageData* image, const int extent[6] = nullptr,
54  vtkImageStencilData* stencil = nullptr, vtkAlgorithm* algorithm = nullptr, int threadId = 0);
55 
59  void Initialize(vtkImageData* image, const int extent[6] = nullptr,
60  vtkImageStencilData* stencil = nullptr, vtkAlgorithm* algorithm = nullptr, int threadId = 0);
61 
63 
68  void NextSpan()
69  {
71  this->UpdatePosition();
72  }
74 
76 
81  void Next()
82  {
83  if (++(this->Id) == this->SpanEnd)
84  {
85  this->NextSpan();
86  }
87  else
88  {
89  this->Index[0]++;
90  this->Position[0] = this->Origin[0] + this->Index[0] * this->Spacing[0];
91  }
92  }
94 
98  bool IsAtEnd() { return this->vtkImagePointDataIterator::IsAtEnd(); }
99 
103  double* GetPosition() VTK_SIZEHINT(3) { return this->Position; }
104 
106 
109  void GetPosition(double x[3])
110  {
111  x[0] = this->Position[0];
112  x[1] = this->Position[1];
113  x[2] = this->Position[2];
114  }
116 
118 
121  void GetPosition(float x[3])
122  {
123  x[0] = this->Position[0];
124  x[1] = this->Position[1];
125  x[2] = this->Position[2];
126  }
128 
129 protected:
131 
135  {
136  this->Position[0] = this->Origin[0] + this->Index[0] * this->Spacing[0];
137  this->Position[1] = this->Origin[1] + this->Index[1] * this->Spacing[1];
138  this->Position[2] = this->Origin[2] + this->Index[2] * this->Spacing[2];
139  }
141 
142  double Origin[3];
143  double Spacing[3];
144  double Position[3];
145 };
146 
147 #endif
148 // 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:62
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:41
#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.