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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkPolyLineParametricPathTest.cxx,v $
  Language:  C++
  Date:      $Date: 2003/09/10 14:30:10 $
  Version:   $Revision: 1.5 $

  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 <iostream>
#include "itkPolyLineParametricPath.h"

int itkPolyLineParametricPathTest(int, char* [])
{
  typedef  itk::PolyLineParametricPath<2>  PathType;
  typedef  PathType::InputType             InputType;
  typedef  PathType::IndexType             IndexType;
  typedef  PathType::OffsetType            OffsetType;
  typedef  PathType::VertexType            VertexType;
  
  bool passed = true;

  InputType   input;
  OffsetType  offset;
  VertexType  v;

  PathType::Pointer path = PathType::New();
  

  v.Fill(1);
  path->AddVertex(v);
  
  v[0]=2;
  v[1]=3;
  path->AddVertex(v);
  
  v[0]=3;
  v[1]=4;
  path->AddVertex(v);
  
  v[0]=0;
  v[1]=5;
  path->AddVertex(v);
  
  v.Fill(1);
  path->AddVertex(v);
  
  std::cout << "Evaluating at 0, 0.5, and 4.0:  " << path->Evaluate(0) << ", "
       << path->Evaluate(0.5) << ", " << path->Evaluate(4.0) << std::endl;
  
  std::cout << "Evaluating to an index at 0, 0.5, and 1.0:  "
       << path->EvaluateToIndex(0) << ", " << path->EvaluateToIndex(0.5)
       << ", " << path->EvaluateToIndex(1.0) << std::endl;
  if( path->EvaluateToIndex(4.0) != path->EvaluateToIndex(0) )
    {
    std::cout << "PolyLineParametricPathTest:  EvaluateToIndex() Failed" << std::endl;
    passed = false;
    }
  
  std::cout << "Evaluating the derivative at 0, 0.5, and 1.0:  "
       << path->EvaluateDerivative(0) << ", " << path->EvaluateDerivative(0.5)
       << ", " << path->EvaluateDerivative(1.0) << std::endl;
  if( int(0.5+1000*(path->EvaluateDerivative(0.5))[0]) != 1000 ||
      int(0.5+1000*(path->EvaluateDerivative(0.5))[1]) != 2000 )
    {
    std::cout << "PolyLineParametricPathTest:  EvaluateDerivative() Failed" << std::endl;
    passed = false;
    }
  
  input = 0;
  offset = path->IncrementInput( input );
  std::cout << "Incrementing the input from 0 to " << input << ":  " << offset << std::endl;
  
  input = 0.5;
  offset = path->IncrementInput( input );
  std::cout << "Incrementing the input from 0.5 to " << input << ":  " << offset << std::endl;
  
  if (passed)
    {
    std::cout << "PolyLineParametricPath tests passed" << std::endl;
    return EXIT_SUCCESS;
    }
  else
    {
    std::cout << "PolyLineParametricPath tests failed" << std::endl;
    return EXIT_FAILURE;
    }
}
