/usr/include/gofigure2/itkvtkPolyDataToitkQuadEdgeMesh.h

/*=========================================================================
 Authors: The GoFigure Dev. Team.
 at Megason Lab, Systems biology, Harvard Medical school, 2009-11

 Copyright (c) 2009-11, President and Fellows of Harvard College.
 All rights reserved.

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 this list of conditions and the following disclaimer.
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 Neither the name of the  President and Fellows of Harvard College
 nor the names of its contributors may be used to endorse or promote
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 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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=========================================================================*/

#ifndef __vtkPolyDataToitkQuadEdgeMesh_h
#define __vtkPolyDataToitkQuadEdgeMesh_h

#include "vtkSmartPointer.h"
#include "vtkPolyData.h"
#include "vtkIdList.h"

#include "itkQuadEdgeMesh.h"
#include "itkTriangleCell.h"

#include "itkObject.h"

namespace itk
{
template< class TMesh >
class vtkPolyDataToitkQuadEdgeMesh : public Object
{
public:
  typedef vtkPolyDataToitkQuadEdgeMesh Self;
  typedef Object Superclass;
  typedef SmartPointer< Self > Pointer;
  typedef SmartPointer< const Self > ConstPointer;

  /** Method for creation through the object factory. */
  itkNewMacro(Self);

  /** Run-time type information (and related methods). */
  itkTypeMacro(vtkPolyDataToitkQuadEdgeMesh, Object);

  typedef TMesh MeshType;
  typedef typename MeshType::Pointer MeshPointer;
  typedef typename MeshType::PointsContainerPointer PointsContainerPointer;
  typedef typename MeshType::PointIdentifier        PointIdentifier;
  typedef typename MeshType::CellAutoPointer        CellAutoPointer;
  typedef typename MeshType::CellType               CellType;
  typedef typename MeshType::PointType              PointType;
  typedef typename PointType::CoordRepType          CoordType;

  typedef TriangleCell< CellType > TriangleCellType;

  void SetInput( vtkPolyData* iMesh )
    {
    m_PolyData = iMesh;
    }

  void Update()
    {
    GenerateData();
    }

  MeshType* GetOutput() const
    {
    return m_OutputMesh.GetPointer();
    }

protected:
  vtkPolyDataToitkQuadEdgeMesh()
    {
    m_OutputMesh = MeshType::New();
    }

  ~vtkPolyDataToitkQuadEdgeMesh() {}

  vtkSmartPointer< vtkPolyData > m_PolyData;
  MeshPointer m_OutputMesh;

  void GenerateData()
    {
    vtkIdType NbOfPoints = m_PolyData->GetNumberOfPoints();

    if( NbOfPoints == 0 )
      {
      itkGenericExceptionMacro( <<"Number Of Points is 0" );
      }

    vtkIdType NbOfCells = m_PolyData->GetNumberOfCells();

    if( NbOfCells == 0 )
      {
      itkGenericExceptionMacro( <<"Number Of Cells is 0" );
      }

    PointsContainerPointer points = m_OutputMesh->GetPoints();
    points->Reserve( NbOfPoints );

    double vtk_p[3];
    PointType itk_p;
    unsigned int dim;

    for( vtkIdType i = 0; i < NbOfPoints; ++i )
      {
      m_PolyData->GetPoint( i, vtk_p );
      for( dim = 0; dim < 3; ++dim )
        {
        itk_p[dim] = static_cast< CoordType >( vtk_p[dim] );
        }
      m_OutputMesh->SetPoint( i, itk_p );
      }

    for( vtkIdType i = 0; i < NbOfCells; ++i )
      {
      vtkIdList* cell_list = vtkIdList::New();

      m_PolyData->GetCellPoints( i, cell_list );

      CellAutoPointer   cell;
      TriangleCellType *triangleCell = new TriangleCellType;
      for ( vtkIdType k = 0; k < cell_list->GetNumberOfIds(); ++k )
        {
        triangleCell->SetPointId( k, cell_list->GetId( k ) );
        }

      cell.TakeOwnership(triangleCell);
      m_OutputMesh->SetCell(i, cell);

      cell_list->Delete();
      }
    }

private:
  vtkPolyDataToitkQuadEdgeMesh( const Self& );
  void operator = ( const Self & );
};
}

#endif // __vtkPolyDataToitkQuadEdgeMesh_h
libgofigure-dev 0.9.0-3+b1 / usr / include / gofigure2 / itkvtkPolyDataToitkQuadEdgeMesh.h
