src/OBJECT/SMESH_CellLabelActor.cxx

   1 // Copyright (C) 2007-2013  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->SetInputData(myCellsNumDataSet);
  56
  57   myClsMaskPoints = vtkMaskPoints::New();
  58   myClsMaskPoints->SetInputConnection(myCellCenters->GetOutputPort());
  59   myClsMaskPoints->SetOnRatio(1);
  60
  61   myClsSelectVisiblePoints = vtkSelectVisiblePoints::New();
  62   myClsSelectVisiblePoints->SetInputConnection(myClsMaskPoints->GetOutputPort());
  63   myClsSelectVisiblePoints->SelectInvisibleOff();
  64   myClsSelectVisiblePoints->SetTolerance(0.1);
  65
  66   myClsLabeledDataMapper = vtkLabeledDataMapper::New();
  67   myClsLabeledDataMapper->SetInputConnection(myClsSelectVisiblePoints->GetOutputPort());
  68
  69   myClsLabeledDataMapper->SetLabelFormat("%d");
  70   myClsLabeledDataMapper->SetLabelModeToLabelScalars();
  71
  72   myClsTextProp = vtkTextProperty::New();
  73   myClsTextProp->SetFontFamilyToTimes();
  74   myClsTextProp->SetFontSize(12);
  75   myClsTextProp->SetBold(1);
  76   myClsTextProp->SetItalic(0);
  77   myClsTextProp->SetShadow(0);
  78   myClsTextProp->SetColor( 0, 1, 0 );
  79   myClsLabeledDataMapper->SetLabelTextProperty(myClsTextProp);
  80
  81   myIsCellsLabeled = false;
  82
  83   myCellsLabels = vtkActor2D::New();
  84   myCellsLabels->SetMapper(myClsLabeledDataMapper);
  85   myCellsLabels->SetVisibility(myIsCellsLabeled);
  86
  87   vtkCallbackCommand* callBackCommand = vtkCallbackCommand::New();
  88   callBackCommand->SetClientData(this);
  89   callBackCommand->SetCallback(SMESH_CellLabelActor::ProcessEvents);
  90
  91   myTransformFilter->AddObserver("VTKViewer_TransformFilter::TransformationFinished",
  92                                  callBackCommand);
  93   callBackCommand->Delete();
  94 }
  95
  96
  97 /*!
  98   Destructor.
  99 */
 100 SMESH_CellLabelActor::~SMESH_CellLabelActor() {
 101   //Deleting of cells numbering pipeline
 102   //---------------------------------------
 103   myCellsNumDataSet->Delete();
 104   myCellsLabels->Delete();
 105   // commented: porting to vtk 5.0
 106   //  myClsMaskPoints->UnRegisterAllOutputs();
 107   myClsMaskPoints->Delete();
 108   // commented: porting to vtk 5.0
 109   //  myCellCenters->UnRegisterAllOutputs();
 110   myCellCenters->Delete();
 111
 112   myClsLabeledDataMapper->RemoveAllInputs();
 113   myClsLabeledDataMapper->Delete();
 114   // commented: porting to vtk 5.0
 115   //  myClsSelectVisiblePoints->UnRegisterAllOutputs();
 116   myClsSelectVisiblePoints->Delete();
 117   myClsTextProp->Delete();
 118 }
 119
 120
 121 void SMESH_CellLabelActor::SetFontProperties( SMESH::LabelFont family, int size,
 122                                               bool bold, bool italic, bool shadow,
 123                                               double r, double g, double b  )
 124 {
 125   switch ( family ) {
 126   case SMESH::FntArial:
 127     myClsTextProp->SetFontFamilyToArial(); break;
 128   case SMESH::FntCourier:
 129     myClsTextProp->SetFontFamilyToCourier(); break;
 130   case SMESH::FntTimes:
 131   default:
 132     myClsTextProp->SetFontFamilyToTimes(); break;
 133   }
 134   myClsTextProp->SetFontSize( size );
 135   myClsTextProp->SetBold( bold );
 136   myClsTextProp->SetItalic( italic );
 137   myClsTextProp->SetShadow( shadow );
 138   myClsTextProp->SetColor( r, g, b );
 139 }
 140
 141 void SMESH_CellLabelActor::SetCellsLabeled(bool theIsCellsLabeled) {
 142   myTransformFilter->Update();
 143   vtkUnstructuredGrid* aGrid = vtkUnstructuredGrid::SafeDownCast(myTransformFilter->GetOutput());
 144   if(!aGrid)
 145     return;
 146
 147   myIsCellsLabeled = theIsCellsLabeled && aGrid->GetNumberOfPoints();
 148   if(myIsCellsLabeled){
 149     myCellsNumDataSet->ShallowCopy(aGrid);
 150     vtkUnstructuredGrid *aDataSet = myCellsNumDataSet;
 151     int aNbElem = aDataSet->GetNumberOfCells();
 152     vtkIntArray *anArray = vtkIntArray::New();
 153     anArray->SetNumberOfValues(aNbElem);
 154     for(int anId = 0; anId < aNbElem; anId++){
 155       int aSMDSId = myVisualObj->GetElemObjId(anId);
 156       anArray->SetValue(anId,aSMDSId);
 157     }
 158     aDataSet->GetCellData()->SetScalars(anArray);
 159     myCellCenters->SetInputData(aDataSet);
 160     myCellsLabels->SetVisibility(GetVisibility());
 161   }else{
 162     myCellsLabels->SetVisibility(false);
 163   }
 164 }
 165
 166 void SMESH_CellLabelActor::SetVisibility(int theMode)
 167 {
 168   SMESH_DeviceActor::SetVisibility(theMode);
 169   myCellsLabels->VisibilityOff();
 170   if(myIsCellsLabeled && theMode)
 171     myCellsLabels->VisibilityOn();
 172 }
 173
 174 void SMESH_CellLabelActor::AddToRender(vtkRenderer* theRenderer)
 175 {
 176   SMESH_DeviceActor::AddToRender(theRenderer);
 177   myClsSelectVisiblePoints->SetRenderer(theRenderer);
 178   theRenderer->AddActor2D(myCellsLabels);
 179 }
 180
 181 void SMESH_CellLabelActor::RemoveFromRender(vtkRenderer* theRenderer)
 182 {
 183   theRenderer->RemoveActor(myCellsLabels);
 184   SMESH_DeviceActor::RemoveFromRender(theRenderer);
 185 }
 186
 187 void SMESH_CellLabelActor::UpdateLabels() {
 188   if(myIsCellsLabeled)
 189     SetCellsLabeled(myIsCellsLabeled);
 190 }
 191
 192
 193 void SMESH_CellLabelActor::ProcessEvents(vtkObject* vtkNotUsed(theObject),
 194                                          unsigned long theEvent,
 195                                          void* theClientData,
 196                                          void* vtkNotUsed(theCallData)) {
 197   SMESH_CellLabelActor* self = reinterpret_cast<SMESH_CellLabelActor*>(theClientData);
 198   if(self)
 199     self->UpdateLabels();
 200 }