itkPSMCostFunctionTest.cxx

/*=========================================================================
 *
 *  Copyright Insight Software Consortium
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0.txt
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 *=========================================================================*/
#include <iostream>
#include "itkPSMCostFunction.h"
#include "itkMacro.h"

namespace itk {

template <unsigned int VDimension>
class TestCostFunction : public PSMCostFunction<VDimension>
{
public:
  typedef TestCostFunction Self;
  typedef SmartPointer<Self>  Pointer;
  typedef SmartPointer<const Self>  ConstPointer;
  typedef PSMCostFunction<VDimension> Superclass;
  itkTypeMacro( TestCostFunction, PSMCostFunction);

  typedef typename Superclass::ParticleSystemType ParticleSystemType;

  typedef typename Superclass::VectorType VectorType;
  typedef typename ParticleSystemType::PointType PointType;
  
  itkNewMacro(Self);

  itkStaticConstMacro(Dimension, unsigned int, VDimension);

  virtual VectorType Evaluate(unsigned int, unsigned int,
                              const ParticleSystemType *, double &maxtimestep, 
                     double &energy) const
  { 
    maxtimestep = 1.0f;
    energy = 1.0f;
    VectorType a; 
    a.fill(1.0f);
    return a;
  }
  virtual VectorType Evaluate(unsigned int a,  unsigned int b, 
                              const ParticleSystemType *c, double &d) const
  {
    double e;
    return this->Evaluate(a,b,c,d,e);
  }  
  virtual double Energy(unsigned int a, unsigned int b,
                        const ParticleSystemType *c) const
  {
    double e, d;
    this->Evaluate(a,b,c,d,e);
    return e;
  }
  
  virtual void BeforeIteration() {}

  virtual void AfterIteration() {}

protected:
  TestCostFunction()
  {     }
  virtual ~TestCostFunction() {}
  void operator=(const TestCostFunction &);
  TestCostFunction(const TestCostFunction &);
};


} //end namespace

int itkPSMCostFunctionTest(int, char* [] )
{
  bool passed = true;
  std::string errstring = "";

  try
    {
      itk::TestCostFunction<3>::Pointer p = itk::TestCostFunction<3>::New();
      itk::TestCostFunction<3>::VectorType a;
      double maxtimestep = 0.0f;
      double energy = 0.0f;
      a.fill(1.0f);
     
      itk::PSMParticleSystem<3>::Pointer ps = itk::PSMParticleSystem<3>::New();

      if (a != p->Evaluate(0,0,ps,maxtimestep,energy) || maxtimestep != 1.0f || energy != 1.0f) 
     {
       passed = false;
       errstring = "Problem calling the Evaluate function";
     }
    }
  catch(itk::ExceptionObject &e)
    {
      errstring = "ITK exception with description: " + std::string(e.GetDescription())
        + std::string("\n at location:") + std::string(e.GetLocation())
        + std::string("\n in file:") + std::string(e.GetFile());
      passed = false;
    }
  catch(...)
    {
      errstring = "Unknown exception thrown";
      passed = false;
    }

  if (passed)
    {
    std::cout << "All tests passed" << std::endl;
    return EXIT_SUCCESS;
    }
  else
    {
    std::cout << "Test failed with the following error:" << std::endl;
    std::cout << errstring << std::endl;
    return EXIT_FAILURE;
    }
}