itkfemgeneratemeshtest.cxx

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkFEMGenerateMeshTest.cxx,v $
  Language:  C++
  Date:      $Date: 2003-12-15 14:13:21 $
  Version:   $Revision: 1.9 $

  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.

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

// disable debug warnings in MS compiler
#ifdef _MSC_VER
#pragma warning(disable: 4786)
#endif

#include "itkFEMGenerateMesh.h"
#include "itkFEMElement2DC0LinearQuadrilateralStrain.h"
#include "itkFEMMaterialLinearElasticity.h"
#include "itkExceptionObject.h"
#include "itkFEMElement3DC0LinearHexahedronStrain.h"


//
int itkFEMGenerateMeshTest(int, char*[])
{
  // Generate2DRectilinearMesh(m_Element,mySolver,MeshOriginV,MeshSizeV,ElementsPerDim);
  // Generate3DRectilinearMesh(m_Element,mySolver,MeshOriginV,MeshSizeV,ElementsPerDim);

  // Set up the solver object
  itk::fem::Solver S;
  itk::fem::LinearSystemWrapperVNL lsw;

  S.SetLinearSystemWrapper(&lsw);

  // Set up mesh dimensions
  vnl_vector<double> MeshOriginV;
  vnl_vector<double> MeshSizeV;
  vnl_vector<double> ElementsPerDim;

  MeshOriginV.set_size(2);
  MeshSizeV.set_size(2);
  ElementsPerDim.set_size(2);

  for ( unsigned int j=0; j<2; j++ )
    {
    MeshOriginV[j]=0.0;
    MeshSizeV[j]=10;
    ElementsPerDim[j]=5.0;
    }

  typedef  itk::fem::MaterialLinearElasticity  ElasticityType;
  // Create the material
  ElasticityType::Pointer m = ElasticityType::New();

  m->GN = 0;
  m->E = 1000.;
  m->A = 1.0;
  m->h = 1.0;
  m->I = 1.0;
  m->nu = 0.4;
  m->RhoC = 1.0;

  // Create the element type
  typedef itk::fem::Element2DC0LinearQuadrilateralStrain  StrainType;
  StrainType::Pointer e1 = StrainType::New();

  e1->m_mat = dynamic_cast< ElasticityType * >( m );

  try 
    {
    itk::fem::Generate2DRectilinearMesh(e1,S,MeshOriginV,MeshSizeV,ElementsPerDim);
    std::cout << "Generated 2D rectilinear mesh" << std::endl;
    }
  catch ( itk::ExceptionObject& ) 
    {
    std::cerr << "Could not generate 2D mesh - test FAILED" << std::endl;
    return EXIT_FAILURE;
    }

  MeshOriginV.set_size(3);
  MeshSizeV.set_size(3);
  ElementsPerDim.set_size(3);

  for (unsigned int j=0;j<3;j++) 
    {
    MeshOriginV[j]=0.;
    MeshSizeV[j]=10;
    ElementsPerDim[j]=5.;
    }

  itk::fem::Element3DC0LinearHexahedronStrain::Pointer e2=itk::fem::Element3DC0LinearHexahedronStrain::New();
  e2->m_mat=dynamic_cast<itk::fem::MaterialLinearElasticity*>(m);

  try
    {
    itk::fem::Generate3DRectilinearMesh(e2,S,MeshOriginV,MeshSizeV,ElementsPerDim);
    std::cout << "Generated 3D rectilinear mesh" << std::endl;
    }
  catch ( itk::ExceptionObject&) 
    {
    std::cerr << "Could not create 3D mesh - test FAILED" << std::endl;
    return EXIT_FAILURE;
  }

  delete e1;
  delete m;
  delete e2;
  std::cout << "Test PASSED!" << std::endl;
  return EXIT_SUCCESS;
}