lib/creaVtk/creaVtkStreamLineScalarSeg.cpp

   1 /*
   2 # ---------------------------------------------------------------------
   3 #
   4 # Copyright (c) CREATIS (Centre de Recherche en Acquisition et Traitement de l'Image
   5 #                        pour la Sante)
   6 # Authors : Eduardo Davila, Frederic Cervenansky, Claire Mouton
   7 # Previous Authors : Laurent Guigues, Jean-Pierre Roux
   8 # CreaTools website : www.creatis.insa-lyon.fr/site/fr/creatools_accueil
   9 #
  10 #  This software is governed by the CeCILL-B license under French law and
  11 #  abiding by the rules of distribution of free software. You can  use,
  12 #  modify and/ or redistribute the software under the terms of the CeCILL-B
  13 #  license as circulated by CEA, CNRS and INRIA at the following URL
  14 #  http://www.cecill.info/licences/Licence_CeCILL-B_V1-en.html
  15 #  or in the file LICENSE.txt.
  16 #
  17 #  As a counterpart to the access to the source code and  rights to copy,
  18 #  modify and redistribute granted by the license, users are provided only
  19 #  with a limited warranty  and the software's author,  the holder of the
  20 #  economic rights,  and the successive licensors  have only  limited
  21 #  liability.
  22 #
  23 #  The fact that you are presently reading this means that you have had
  24 #  knowledge of the CeCILL-B license and that you accept its terms.
  25 # ------------------------------------------------------------------------
  26 */
  27
  28 #include "creaVtkStreamLineScalarSeg.h"
  29 #include "vtkPointData.h"
  30 #include "vtkDataArray.h"
  31 #include "vtkDoubleArray.h"
  32
  33
  34 // ------------------------------------------------------------------------
  35 creaVtkStreamLineScalarSeg::creaVtkStreamLineScalarSeg()
  36 {
  37         _vtkidlist                      = vtkIdList::New();
  38    _newvtkpolydata      = vtkPolyData::New();
  39    _newvtkcellarray     = vtkCellArray::New();
  40 }
  41
  42 // ------------------------------------------------------------------------
  43 creaVtkStreamLineScalarSeg::~creaVtkStreamLineScalarSeg()
  44 {
  45 }
  46
  47 // ------------------------------------------------------------------------
  48 void creaVtkStreamLineScalarSeg::SetScalarStreamLinesIn( vtkPolyData* polydata)
  49 {
  50         _StreamLinesIn = polydata;
  51 }
  52
  53 // ------------------------------------------------------------------------
  54 void creaVtkStreamLineScalarSeg::SetScalarArrayName( std::string name)
  55 {
  56         _ScalarArrayName = name;
  57 }
  58
  59 // ------------------------------------------------------------------------
  60 void creaVtkStreamLineScalarSeg::SetThresholdLower( double value)
  61 {
  62         _ThresholdLower = value;
  63 }
  64
  65 // ------------------------------------------------------------------------
  66 void creaVtkStreamLineScalarSeg::SetThresholdUpper( double value )
  67 {
  68         _ThresholdUpper = value;
  69 }
  70
  71 // ------------------------------------------------------------------------
  72 void creaVtkStreamLineScalarSeg::Process()
  73 {
  74         if (_ScalarArrayName=="")
  75         {
  76                 printf(".\n ");
  77                 printf(".\n ");
  78                 printf("BBTK Warnning! ScalarArrayName is empty in creaVtkStreamLineScalarSeg \n");
  79                 printf(".\n ");
  80                 printf(".\n ");
  81         }
  82
  83         if ((_StreamLinesIn!=NULL) && (_ScalarArrayName!="") )
  84         {
  85                 int iLine;
  86
  87                 _newvtkcellarray->Initialize();
  88
  89         vtkCellArray    *vtkcellarray           = _StreamLinesIn->GetLines();
  90         int                             nLinesCell                      = vtkcellarray->GetNumberOfCells();
  91 //      int                             vtkcellarraysize        = vtkcellarray->GetSize();
  92         int                             numberofids;
  93         int                             ii;
  94                 vtkDataArray    *scalarArray = _StreamLinesIn->GetPointData()->GetArray( _ScalarArrayName.c_str() );
  95
  96
  97                 vtkDoubleArray  *newScalarArray                         = vtkDoubleArray::New();
  98                 newScalarArray->SetName( _ScalarArrayName.c_str() );
  99                 newScalarArray->SetNumberOfComponents(1);
 100
 101         // FOR EACH LINE
 102                 double scalarValue;
 103                 long int iLineNew=0;
 104         ii=0;
 105         for ( iLine=0 ; iLine<nLinesCell ; iLine++ )
 106         {
 107                         vtkcellarray->GetCell(ii, _vtkidlist );
 108                         numberofids = _vtkidlist->GetNumberOfIds();
 109                         scalarValue = scalarArray->GetTuple1(iLine);
 110                         if ( ( scalarValue>=_ThresholdLower ) && ( scalarValue<=_ThresholdUpper ) )
 111                         {
 112                                 _newvtkcellarray->InsertNextCell( _vtkidlist );
 113                                 newScalarArray->InsertTuple1( iLineNew, scalarValue );
 114                                 iLineNew++;
 115                         }
 116
 117                         ii=ii+numberofids+1;
 118         } // for iLine
 119
 120                 _newvtkpolydata->SetPoints( _StreamLinesIn->GetPoints() );
 121                 _newvtkpolydata->SetLines( _newvtkcellarray );
 122                 int iArrays,arraysSize = _StreamLinesIn->GetPointData()->GetNumberOfArrays();
 123                 for ( iArrays=0 ; iArrays<arraysSize ; iArrays++ )
 124                 {
 125                         _newvtkpolydata->GetPointData()->AddArray( _StreamLinesIn->GetPointData()->GetArray(iArrays) );
 126                 }
 127                 _newvtkpolydata->GetPointData()->RemoveArray( _ScalarArrayName.c_str() );
 128                 _newvtkpolydata->GetPointData()->AddArray( newScalarArray );
 129                 _newvtkpolydata->Update();
 130
 131         _StreamLinesOut = _newvtkpolydata;
 132
 133         } // _StreamLinesIn
 134
 135 }
 136
 137 // ------------------------------------------------------------------------
 138 vtkPolyData* creaVtkStreamLineScalarSeg::GetStreamLinesOut()
 139 {
 140         return _StreamLinesOut;
 141 }
 142
 143