src/OBJECT/SMESH_CellLabelActor.cxx

   1 // Copyright (C) 2007-2014  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, or (at your option) any later version.
  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 #include <VTKViewer_ExtractUnstructuredGrid.h>
  31
  32 #include <vtkObjectFactory.h>
  33 #include <vtkCallbackCommand.h>
  34 #include <vtkMaskPoints.h>
  35 #include <vtkSelectVisiblePoints.h>
  36 #include <vtkLabeledDataMapper.h>
  37 #include <vtkActor2D.h>
  38 #include <vtkTextProperty.h>
  39 #include <vtkPointData.h>
  40 #include <vtkProperty2D.h>
  41 #include <vtkRenderer.h>
  42 #include <vtkUnstructuredGrid.h>
  43 #include <vtkCellData.h>
  44
  45 vtkStandardNewMacro(SMESH_CellLabelActor);
  46
  47 /*!
  48   Constructor.
  49 */
  50 SMESH_CellLabelActor::SMESH_CellLabelActor() {
  51     //Definition of cells numbering pipeline
  52   //---------------------------------------
  53   myCellsNumDataSet = vtkUnstructuredGrid::New();
  54
  55   myCellCenters = VTKViewer_CellCenters::New();
  56   myCellCenters->SetInputData(myCellsNumDataSet);
  57
  58   myClsMaskPoints = vtkMaskPoints::New();
  59   myClsMaskPoints->SetInputConnection(myCellCenters->GetOutputPort());
  60   myClsMaskPoints->SetOnRatio(1);
  61
  62   myClsSelectVisiblePoints = vtkSelectVisiblePoints::New();
  63   myClsSelectVisiblePoints->SetInputConnection(myClsMaskPoints->GetOutputPort());
  64   myClsSelectVisiblePoints->SelectInvisibleOff();
  65   myClsSelectVisiblePoints->SetTolerance(0.1);
  66
  67   myClsLabeledDataMapper = vtkLabeledDataMapper::New();
  68   myClsLabeledDataMapper->SetInputConnection(myClsSelectVisiblePoints->GetOutputPort());
  69
  70   myClsLabeledDataMapper->SetLabelFormat("%d");
  71   myClsLabeledDataMapper->SetLabelModeToLabelScalars();
  72
  73   myClsTextProp = vtkTextProperty::New();
  74   myClsTextProp->SetFontFamilyToTimes();
  75   myClsTextProp->SetFontSize(12);
  76   myClsTextProp->SetBold(1);
  77   myClsTextProp->SetItalic(0);
  78   myClsTextProp->SetShadow(0);
  79   myClsTextProp->SetColor( 0, 1, 0 );
  80   myClsLabeledDataMapper->SetLabelTextProperty(myClsTextProp);
  81
  82   myIsCellsLabeled = false;
  83
  84   myCellsLabels = vtkActor2D::New();
  85   myCellsLabels->SetMapper(myClsLabeledDataMapper);
  86   myCellsLabels->SetVisibility(myIsCellsLabeled);
  87
  88   vtkCallbackCommand* callBackCommand = vtkCallbackCommand::New();
  89   callBackCommand->SetClientData(this);
  90   callBackCommand->SetCallback(SMESH_CellLabelActor::ProcessEvents);
  91
  92   myTransformFilter->AddObserver("VTKViewer_TransformFilter::TransformationFinished",
  93                                  callBackCommand);
  94   callBackCommand->Delete();
  95 }
  96
  97
  98 /*!
  99   Destructor.
 100 */
 101 SMESH_CellLabelActor::~SMESH_CellLabelActor() {
 102   //Deleting of cells numbering pipeline
 103   //---------------------------------------
 104   myCellsNumDataSet->Delete();
 105   myCellsLabels->Delete();
 106   // commented: porting to vtk 5.0
 107   //  myClsMaskPoints->UnRegisterAllOutputs();
 108   myClsMaskPoints->Delete();
 109   // commented: porting to vtk 5.0
 110   //  myCellCenters->UnRegisterAllOutputs();
 111   myCellCenters->Delete();
 112
 113   myClsLabeledDataMapper->RemoveAllInputs();
 114   myClsLabeledDataMapper->Delete();
 115   // commented: porting to vtk 5.0
 116   //  myClsSelectVisiblePoints->UnRegisterAllOutputs();
 117   myClsSelectVisiblePoints->Delete();
 118   myClsTextProp->Delete();
 119 }
 120
 121
 122 void SMESH_CellLabelActor::SetFontProperties( SMESH::LabelFont family, int size,
 123                                               bool bold, bool italic, bool shadow,
 124                                               double r, double g, double b  )
 125 {
 126   switch ( family ) {
 127   case SMESH::FntArial:
 128     myClsTextProp->SetFontFamilyToArial(); break;
 129   case SMESH::FntCourier:
 130     myClsTextProp->SetFontFamilyToCourier(); break;
 131   case SMESH::FntTimes:
 132   default:
 133     myClsTextProp->SetFontFamilyToTimes(); break;
 134   }
 135   myClsTextProp->SetFontSize( size );
 136   myClsTextProp->SetBold( bold );
 137   myClsTextProp->SetItalic( italic );
 138   myClsTextProp->SetShadow( shadow );
 139   myClsTextProp->SetColor( r, g, b );
 140 }
 141
 142 void SMESH_CellLabelActor::SetCellsLabeled(bool theIsCellsLabeled) {
 143   myTransformFilter->Update();
 144   vtkUnstructuredGrid* aGrid = vtkUnstructuredGrid::SafeDownCast(myTransformFilter->GetOutput());
 145   if(!aGrid)
 146     return;
 147
 148   myIsCellsLabeled = theIsCellsLabeled && aGrid->GetNumberOfPoints();
 149   if(myIsCellsLabeled){
 150     myCellsNumDataSet->ShallowCopy(aGrid);
 151     vtkUnstructuredGrid *aDataSet = myCellsNumDataSet;
 152     int aNbElem = aDataSet->GetNumberOfCells();
 153     vtkIntArray *anArray = vtkIntArray::New();
 154     anArray->SetNumberOfValues(aNbElem);
 155     for(int anId = 0; anId < aNbElem; anId++){
 156       vtkIdType id = myExtractUnstructuredGrid->GetInputId(anId);
 157       id = (id >=0) ? id : anId;
 158       int aSMDSId = myVisualObj->GetElemObjId(id);
 159       anArray->SetValue(anId,aSMDSId);
 160     }
 161     aDataSet->GetCellData()->SetScalars(anArray);
 162     myCellCenters->SetInputData(aDataSet);
 163     myCellsLabels->SetVisibility(GetVisibility());
 164   }else{
 165     myCellsLabels->SetVisibility(false);
 166   }
 167 }
 168
 169 void SMESH_CellLabelActor::SetVisibility(int theMode)
 170 {
 171   SMESH_DeviceActor::SetVisibility(theMode);
 172   myCellsLabels->VisibilityOff();
 173   if(myIsCellsLabeled && theMode)
 174     myCellsLabels->VisibilityOn();
 175 }
 176
 177 void SMESH_CellLabelActor::AddToRender(vtkRenderer* theRenderer)
 178 {
 179   SMESH_DeviceActor::AddToRender(theRenderer);
 180   myClsSelectVisiblePoints->SetRenderer(theRenderer);
 181   theRenderer->AddActor2D(myCellsLabels);
 182 }
 183
 184 void SMESH_CellLabelActor::RemoveFromRender(vtkRenderer* theRenderer)
 185 {
 186   theRenderer->RemoveActor(myCellsLabels);
 187   SMESH_DeviceActor::RemoveFromRender(theRenderer);
 188 }
 189
 190 void SMESH_CellLabelActor::UpdateLabels() {
 191   if(myIsCellsLabeled)
 192     SetCellsLabeled(myIsCellsLabeled);
 193 }
 194
 195
 196 void SMESH_CellLabelActor::ProcessEvents(vtkObject* vtkNotUsed(theObject),
 197                                          unsigned long theEvent,
 198                                          void* theClientData,
 199                                          void* vtkNotUsed(theCallData)) {
 200   SMESH_CellLabelActor* self = reinterpret_cast<SMESH_CellLabelActor*>(theClientData);
 201   if(self)
 202     self->UpdateLabels();
 203 }