src/OBJECT/SMESH_CellLabelActor.cxx

   1 // Copyright (C) 2007-2012  CEA/DEN, EDF R&D, OPEN CASCADE
   2 //
   3 // Copyright (C) 2003-2007  OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
   4 // CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
   5 //
   6 // This library is free software; you can redistribute it and/or
   7 // modify it under the terms of the GNU Lesser General Public
   8 // License as published by the Free Software Foundation; either
   9 // version 2.1 of the License.
  10 //
  11 // This library is distributed in the hope that it will be useful,
  12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 // Lesser General Public License for more details.
  15 //
  16 // You should have received a copy of the GNU Lesser General Public
  17 // License along with this library; if not, write to the Free Software
  18 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307 USA
  19 //
  20 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
  21 //
  22 //  File   : SMESH_CellLabelActor.cxx
  23 //  Author : Roman NIKOLAEV
  24 //  Module : SMESH
  25 //
  26 #include "SMESH_CellLabelActor.h"
  27
  28 #include <VTKViewer_TransformFilter.h>
  29 #include <VTKViewer_CellCenters.h>
  30
  31 #include <vtkObjectFactory.h>
  32 #include <vtkCallbackCommand.h>
  33 #include <vtkMaskPoints.h>
  34 #include <vtkSelectVisiblePoints.h>
  35 #include <vtkLabeledDataMapper.h>
  36 #include <vtkActor2D.h>
  37 #include <vtkTextProperty.h>
  38 #include <vtkPointData.h>
  39 #include <vtkProperty2D.h>
  40 #include <vtkRenderer.h>
  41 #include <vtkUnstructuredGrid.h>
  42 #include <vtkCellData.h>
  43
  44 vtkStandardNewMacro(SMESH_CellLabelActor);
  45
  46 /*!
  47   Constructor.
  48 */
  49 SMESH_CellLabelActor::SMESH_CellLabelActor() {
  50     //Definition of cells numbering pipeline
  51   //---------------------------------------
  52   myCellsNumDataSet = vtkUnstructuredGrid::New();
  53
  54   myCellCenters = VTKViewer_CellCenters::New();
  55   myCellCenters->SetInput(myCellsNumDataSet);
  56
  57   myClsMaskPoints = vtkMaskPoints::New();
  58   myClsMaskPoints->SetInput(myCellCenters->GetOutput());
  59   myClsMaskPoints->SetOnRatio(1);
  60
  61   myClsSelectVisiblePoints = vtkSelectVisiblePoints::New();
  62   myClsSelectVisiblePoints->SetInput(myClsMaskPoints->GetOutput());
  63   myClsSelectVisiblePoints->SelectInvisibleOff();
  64   myClsSelectVisiblePoints->SetTolerance(0.1);
  65
  66   myClsLabeledDataMapper = vtkLabeledDataMapper::New();
  67   myClsLabeledDataMapper->SetInput(myClsSelectVisiblePoints->GetOutput());
  68
  69   myClsLabeledDataMapper->SetLabelFormat("%d");
  70   myClsLabeledDataMapper->SetLabelModeToLabelScalars();
  71
  72   vtkTextProperty* aClsTextProp = vtkTextProperty::New();
  73   aClsTextProp->SetFontFamilyToTimes();
  74   static int aCellsFontSize = 12;
  75   aClsTextProp->SetFontSize(aCellsFontSize);
  76   aClsTextProp->SetBold(1);
  77   aClsTextProp->SetItalic(0);
  78   aClsTextProp->SetShadow(0);
  79   myClsLabeledDataMapper->SetLabelTextProperty(aClsTextProp);
  80   aClsTextProp->Delete();
  81
  82   myIsCellsLabeled = false;
  83
  84   myCellsLabels = vtkActor2D::New();
  85   myCellsLabels->SetMapper(myClsLabeledDataMapper);
  86   myCellsLabels->GetProperty()->SetColor(0,1,0);
  87   myCellsLabels->SetVisibility(myIsCellsLabeled);
  88
  89   vtkCallbackCommand* callBackCommand = vtkCallbackCommand::New();
  90   callBackCommand->SetClientData(this);
  91   callBackCommand->SetCallback(SMESH_CellLabelActor::ProcessEvents);
  92
  93   myTransformFilter->AddObserver("VTKViewer_TransformFilter::TransformationFinished",
  94                                  callBackCommand);
  95   callBackCommand->Delete();
  96 }
  97
  98
  99 /*!
 100   Destructor.
 101 */
 102 SMESH_CellLabelActor::~SMESH_CellLabelActor() {
 103   //Deleting of cells numbering pipeline
 104   //---------------------------------------
 105   myCellsNumDataSet->Delete();
 106
 107   myClsLabeledDataMapper->RemoveAllInputs();
 108   myClsLabeledDataMapper->Delete();
 109
 110   // commented: porting to vtk 5.0
 111   //  myClsSelectVisiblePoints->UnRegisterAllOutputs();
 112   myClsSelectVisiblePoints->Delete();
 113
 114   // commented: porting to vtk 5.0
 115   //  myClsMaskPoints->UnRegisterAllOutputs();
 116   myClsMaskPoints->Delete();
 117
 118   // commented: porting to vtk 5.0
 119   //  myCellCenters->UnRegisterAllOutputs();
 120   myCellCenters->Delete();
 121
 122   myCellsLabels->Delete();
 123 }
 124
 125
 126 void SMESH_CellLabelActor::SetCellsLabeled(bool theIsCellsLabeled) {
 127   myTransformFilter->Update();
 128   vtkUnstructuredGrid* aGrid = vtkUnstructuredGrid::SafeDownCast(myTransformFilter->GetOutput());
 129   if(!aGrid)
 130     return;
 131
 132   myIsCellsLabeled = theIsCellsLabeled && aGrid->GetNumberOfPoints();
 133   if(myIsCellsLabeled){
 134     myCellsNumDataSet->ShallowCopy(aGrid);
 135     vtkUnstructuredGrid *aDataSet = myCellsNumDataSet;
 136     int aNbElem = aDataSet->GetNumberOfCells();
 137     vtkIntArray *anArray = vtkIntArray::New();
 138     anArray->SetNumberOfValues(aNbElem);
 139     for(int anId = 0; anId < aNbElem; anId++){
 140       int aSMDSId = myVisualObj->GetElemObjId(anId);
 141       anArray->SetValue(anId,aSMDSId);
 142     }
 143     aDataSet->GetCellData()->SetScalars(anArray);
 144     myCellCenters->SetInput(aDataSet);
 145     myCellsLabels->SetVisibility(GetVisibility());
 146   }else{
 147     myCellsLabels->SetVisibility(false);
 148   }
 149 }
 150
 151 void SMESH_CellLabelActor::SetVisibility(int theMode)
 152 {
 153   SMESH_DeviceActor::SetVisibility(theMode);
 154   myCellsLabels->VisibilityOff();
 155   if(myIsCellsLabeled && theMode)
 156     myCellsLabels->VisibilityOn();
 157 }
 158
 159 void SMESH_CellLabelActor::AddToRender(vtkRenderer* theRenderer)
 160 {
 161   SMESH_DeviceActor::AddToRender(theRenderer);
 162   myClsSelectVisiblePoints->SetRenderer(theRenderer);
 163   theRenderer->AddActor2D(myCellsLabels);
 164 }
 165
 166 void SMESH_CellLabelActor::RemoveFromRender(vtkRenderer* theRenderer)
 167 {
 168   theRenderer->RemoveActor(myCellsLabels);
 169   SMESH_DeviceActor::RemoveFromRender(theRenderer);
 170 }
 171
 172 void SMESH_CellLabelActor::UpdateLabels() {
 173   if(myIsCellsLabeled)
 174     SetCellsLabeled(myIsCellsLabeled);
 175 }
 176
 177
 178 void SMESH_CellLabelActor::ProcessEvents(vtkObject* vtkNotUsed(theObject),
 179                                          unsigned long theEvent,
 180                                          void* theClientData,
 181                                          void* vtkNotUsed(theCallData)) {
 182   SMESH_CellLabelActor* self = reinterpret_cast<SMESH_CellLabelActor*>(theClientData);
 183   if(self)
 184     self->UpdateLabels();
 185 }