lib/creaVtk/vtkStreamLineCreateColorInfo.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 "vtkStreamLineCreateColorInfo.h"
  29 #include "vtkIdList.h"
  30 #include "vtkCellArray.h"
  31 #include "vtkCharArray.h"
  32 #include "vtkDoubleArray.h"
  33 #include "vtkPointData.h"
  34
  35
  36 vtkStreamLineCreateColorInfo::vtkStreamLineCreateColorInfo()
  37 {
  38         _StreamLinesIn = NULL;
  39         _vtkidlist              = vtkIdList::New();
  40
  41 }
  42
  43 vtkStreamLineCreateColorInfo::~vtkStreamLineCreateColorInfo()
  44 {
  45 }
  46
  47 //---------------------------------------------
  48 void vtkStreamLineCreateColorInfo::SetStreamLinesIn(vtkPolyData* streamlinein)
  49 {
  50         _StreamLinesIn = streamlinein;
  51 }
  52
  53 //---------------------------------------------
  54 vtkPolyData *vtkStreamLineCreateColorInfo::GetStreamLinesOut()
  55 {
  56         return _StreamLinesIn;
  57 }
  58
  59 //---------------------------------------------
  60 void vtkStreamLineCreateColorInfo::Run()
  61 {
  62         vtkCellArray    *vtkcellarray           = _StreamLinesIn->GetLines();
  63         long int                nLinesCell                      = vtkcellarray->GetNumberOfCells();
  64         long int                numberofids;
  65         long int                ii,jj,iLine;
  66         double                  point1[3];
  67         double                  point2[3];
  68         long int                id,id1,id2;
  69         double                  vx,vy,vz,mag;
  70         double                  colorDirX,colorDirY,colorDirZ;
  71
  72         _StreamLinesIn->Update();
  73         vtkCharArray    *mask                           = vtkCharArray::New();
  74         vtkDoubleArray  *magnitud                       = vtkDoubleArray::New();
  75         vtkDoubleArray  *velocity                       = vtkDoubleArray::New();
  76         vtkDoubleArray  *colorDirection = vtkDoubleArray::New();
  77
  78         mask->SetName("creaMask");  // ... fill the colors array
  79         mask->SetNumberOfComponents(1); //3d normals (ie x,y,z)
  80         mask->SetNumberOfTuples(_StreamLinesIn->GetNumberOfPoints());
  81
  82         magnitud->SetName("creaMagnitud");  // ... fill the colors array
  83         magnitud->SetNumberOfComponents(1); //3d normals (ie x,y,z)
  84         magnitud->SetNumberOfTuples(_StreamLinesIn->GetNumberOfPoints());
  85
  86         velocity->SetName("creaVelocity");  // ... fill the colors array
  87         velocity->SetNumberOfComponents(3); //3d normals (ie x,y,z)
  88         velocity->SetNumberOfTuples(_StreamLinesIn->GetNumberOfPoints());
  89
  90         colorDirection->SetName("creaColorDirection");  // ... fill the colors array
  91         colorDirection->SetNumberOfComponents(3); //3d normals (ie x,y,z)
  92         colorDirection->SetNumberOfTuples(_StreamLinesIn->GetNumberOfPoints());
  93
  94
  95         for (ii=0;ii<_StreamLinesIn->GetNumberOfPoints();ii++)
  96         {
  97                 mask->SetTuple1 (ii, 0);
  98                 magnitud->SetTuple1 (ii, 0);
  99                 velocity->SetTuple3 (ii, 0, 0, 0);
 100                 colorDirection->SetTuple3 (ii, 0, 0, 0);
 101         }
 102
 103         // FOR EACH LINE
 104    ii=0;
 105    for ( iLine=0 ; iLine<nLinesCell ; iLine++ )
 106    {
 107                 vtkcellarray->GetCell(ii, _vtkidlist );
 108                 numberofids = _vtkidlist->GetNumberOfIds();
 109
 110                 for (jj=0;jj<numberofids;jj++)
 111                 {
 112                         id = _vtkidlist->GetId(jj);
 113                         if (jj-1>=0) {  id1 = _vtkidlist->GetId(jj-1); } else {id1=id;}
 114                         if (jj+1<numberofids) {id2 = _vtkidlist->GetId(jj+1);} else {id2=id;}
 115                         _StreamLinesIn->GetPoint( id1 ,point1);
 116                         _StreamLinesIn->GetPoint( id2 ,point2);
 117                         vx= point1[0]-point2[0];
 118                         vy= point1[1]-point2[1];
 119                         vz= point1[2]-point2[2];
 120                         mag= sqrt( vx*vx +vy*vy + vz*vz );
 121                         colorDirX=fabs(vx/mag);
 122                         colorDirY=fabs(vy/mag);
 123                         colorDirZ=fabs(vz/mag);
 124
 125                 mask->SetTuple1 (id, 1);
 126                 magnitud->SetTuple1 (id, mag);
 127                 velocity->SetTuple3 (id, vx,vy,vz);
 128                 colorDirection->SetTuple3 (id, colorDirX,colorDirY,colorDirZ);
 129                 } // for jj
 130
 131                 ii=ii+numberofids+1;
 132    } // for iLine
 133
 134         _StreamLinesIn->GetPointData()->AddArray( mask );
 135         _StreamLinesIn->GetPointData()->AddArray( magnitud );
 136         _StreamLinesIn->GetPointData()->AddArray( velocity );
 137         _StreamLinesIn->GetPointData()->AddArray( colorDirection );
 138
 139 }
 140
 141 //---------------------------------------------
 142 void vtkStreamLineCreateColorInfo::Process()
 143 {
 144         if (_StreamLinesIn!=NULL)
 145         {
 146                 Run();
 147         }
 148 }
 149
 150