itkneighborhoodtest.cxx

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/*=========================================================================

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkNeighborhoodTest.cxx,v $
  Language:  C++
  Date:      $Date: 2007-08-20 13:00:21 $
  Version:   $Revision: 1.13 $

  Copyright (c) Insight Software Consortium. All rights reserved.
  See ITKCopyright.txt or http://www.itk.org/HTML/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 notices for more information.

=========================================================================*/
#if defined(_MSC_VER)
#pragma warning ( disable : 4786 )
#endif
#include "itkNeighborhood.h"
#include "itkVector.h"


inline void println(const char *s)
{
  std::cout << std::endl << s << std::endl;
}

int itkNeighborhoodTest(int, char* [] )
{
  unsigned int i;

  println("TESTING WITH VNL_VECTOR ALLOCATOR");
  itk::Neighborhood<float, 2, vnl_vector<float> > b;
  b.SetRadius(3);

  println("Test data access");
  for (i=0; i<b.Size(); ++i) b[i] = (float)i;
  b.Print(std::cout);

  println("Test non_const iterators");
  for (itk::Neighborhood<float, 2>::Iterator it = b.Begin();
       it < b.End(); ++it) *it = 4.0f;
  b.Print(std::cout);

  println("Test const_iterators");
  for (itk::Neighborhood<float, 2>::ConstIterator itc = b.Begin();
       itc < b.End(); ++itc) std::cout << *itc << " ";
  
  println("Copy the buffer into a vnl_vector");
  vnl_vector<float> v = b.GetBufferReference();
  v[2] = 0.0f;
  std::cout << &v << std::endl;
  b.Print(std::cout); // b unmodified

  println("Pointer to the buffer with a const vnl_vector");
  const vnl_vector<float> &vcp = b.GetBufferReference();
  std::cout << &vcp << std::endl;
  std::cout << vcp;
  
  println("Point to the buffer using a vnl_vector");
  vnl_vector<float> &vp = b.GetBufferReference();
  std::cout << &vp << std::endl;
  vp[2] = 0.0f;
  b.Print(std::cout); // b modified

  println("TESTING WITH DEFAULT ALLOCATOR");
  itk::Neighborhood<float, 2> q;
  itk::Size<2> rad;
  rad[0] = 3;
  rad[1] = 2;
  q.SetRadius(rad);
  q.Print(std::cout);

  println("Testing assignment operator");
  itk::Neighborhood<float, 2> p = q;
  p.Print(std::cout);

  println("Testing copy constructor");
  itk::Neighborhood<float, 2> r(q);
  r.Print(std::cout);

  println("Testing instantiation with itk::Vector");
  itk::Neighborhood< itk::Vector<float, 3>, 2 > s;
  s.SetRadius(rad);
  s.Print(std::cout);
  
  println("Testing stride lengths");
  itk::Neighborhood<float , 2> stride_2d;
  stride_2d.SetRadius(1);
  stride_2d.Print(std::cout);

  println("3d");
  itk::Neighborhood<float, 3> stride_3d;
  stride_3d.SetRadius(1);
  stride_3d.Print(std::cout);

  println("Printing the indicies of the 8 neighbors");
  std::cout << stride_3d.GetOffset(4) << std::endl;
  std::cout << stride_3d.GetOffset(10)  << std::endl;
  std::cout << stride_3d.GetOffset(12)  << std::endl;
  std::cout << stride_3d.GetOffset(13)  << std::endl;
  std::cout << stride_3d.GetOffset(14)  << std::endl;
  std::cout << stride_3d.GetOffset(16)  << std::endl;
  std::cout << stride_3d.GetOffset(22)  << std::endl;


  println("ANOTHER TEST");
  itk::Neighborhood<float, 2> q2;
  q2.SetRadius(3);
  q2.Print(std::cout);


  
  return EXIT_SUCCESS;
}