src/OBJECT/SMESH_CellLabelActor.cxx

   1 // Copyright (C) 2007-2016  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 "SMESH_ExtractGeometry.h"
  29
  30 #include <VTKViewer_TransformFilter.h>
  31 #include <VTKViewer_CellCenters.h>
  32 #include <VTKViewer_ExtractUnstructuredGrid.h>
  33
  34 #include <vtkObjectFactory.h>
  35 #include <vtkCallbackCommand.h>
  36 #include <vtkMaskPoints.h>
  37 #include <vtkSelectVisiblePoints.h>
  38 #include <vtkLabeledDataMapper.h>
  39 #include <vtkActor2D.h>
  40 #include <vtkTextProperty.h>
  41 #include <vtkPointData.h>
  42 #include <vtkProperty2D.h>
  43 #include <vtkRenderer.h>
  44 #include <vtkUnstructuredGrid.h>
  45 #include <vtkCellData.h>
  46
  47 vtkStandardNewMacro(SMESH_CellLabelActor);
  48
  49 /*!
  50   Constructor.
  51 */
  52 SMESH_CellLabelActor::SMESH_CellLabelActor()
  53 {
  54   //Definition of cells numbering pipeline
  55   //---------------------------------------
  56   myCellsNumDataSet = vtkUnstructuredGrid::New();
  57
  58   myCellCenters = VTKViewer_CellCenters::New();
  59   myCellCenters->SetInputData(myCellsNumDataSet);
  60
  61   myClsMaskPoints = vtkMaskPoints::New();
  62   myClsMaskPoints->SetInputConnection(myCellCenters->GetOutputPort());
  63   myClsMaskPoints->SetOnRatio(1);
  64
  65   myClsSelectVisiblePoints = vtkSelectVisiblePoints::New();
  66   myClsSelectVisiblePoints->SetInputConnection(myClsMaskPoints->GetOutputPort());
  67   myClsSelectVisiblePoints->SelectInvisibleOff();
  68   myClsSelectVisiblePoints->SetTolerance(0.1);
  69
  70   myClsLabeledDataMapper = vtkLabeledDataMapper::New();
  71   myClsLabeledDataMapper->SetInputConnection(myClsSelectVisiblePoints->GetOutputPort());
  72
  73   myClsLabeledDataMapper->SetLabelFormat("%d");
  74   myClsLabeledDataMapper->SetLabelModeToLabelScalars();
  75
  76   myClsTextProp = vtkTextProperty::New();
  77   myClsTextProp->SetFontFamilyToTimes();
  78   myClsTextProp->SetFontSize(12);
  79   myClsTextProp->SetBold(1);
  80   myClsTextProp->SetItalic(0);
  81   myClsTextProp->SetShadow(0);
  82   myClsTextProp->SetColor( 0, 1, 0 );
  83   myClsLabeledDataMapper->SetLabelTextProperty(myClsTextProp);
  84
  85   myIsCellsLabeled = false;
  86
  87   myCellsLabels = vtkActor2D::New();
  88   myCellsLabels->SetMapper(myClsLabeledDataMapper);
  89   myCellsLabels->SetVisibility(myIsCellsLabeled);
  90
  91   vtkCallbackCommand* callBackCommand = vtkCallbackCommand::New();
  92   callBackCommand->SetClientData(this);
  93   callBackCommand->SetCallback(SMESH_CellLabelActor::ProcessEvents);
  94
  95   myTransformFilter->AddObserver("VTKViewer_TransformFilter::TransformationFinished",
  96                                  callBackCommand);
  97   callBackCommand->Delete();
  98 }
  99
 100
 101 /*!
 102   Destructor.
 103 */
 104 SMESH_CellLabelActor::~SMESH_CellLabelActor()
 105 {
 106   //Deleting of cells numbering pipeline
 107   //---------------------------------------
 108   myCellsNumDataSet->Delete();
 109   myCellsLabels->Delete();
 110   // commented: porting to vtk 5.0
 111   //  myClsMaskPoints->UnRegisterAllOutputs();
 112   myClsMaskPoints->Delete();
 113   // commented: porting to vtk 5.0
 114   //  myCellCenters->UnRegisterAllOutputs();
 115   myCellCenters->Delete();
 116
 117   myClsLabeledDataMapper->RemoveAllInputs();
 118   myClsLabeledDataMapper->Delete();
 119   // commented: porting to vtk 5.0
 120   //  myClsSelectVisiblePoints->UnRegisterAllOutputs();
 121   myClsSelectVisiblePoints->Delete();
 122   myClsTextProp->Delete();
 123 }
 124
 125
 126 void SMESH_CellLabelActor::SetFontProperties( SMESH::LabelFont family, int size,
 127                                               bool bold, bool italic, bool shadow,
 128                                               double r, double g, double b  )
 129 {
 130   switch ( family ) {
 131   case SMESH::FntArial:
 132     myClsTextProp->SetFontFamilyToArial(); break;
 133   case SMESH::FntCourier:
 134     myClsTextProp->SetFontFamilyToCourier(); break;
 135   case SMESH::FntTimes:
 136   default:
 137     myClsTextProp->SetFontFamilyToTimes(); break;
 138   }
 139   myClsTextProp->SetFontSize( size );
 140   myClsTextProp->SetBold( bold );
 141   myClsTextProp->SetItalic( italic );
 142   myClsTextProp->SetShadow( shadow );
 143   myClsTextProp->SetColor( r, g, b );
 144 }
 145
 146 void SMESH_CellLabelActor::SetCellsLabeled(bool theIsCellsLabeled)
 147 {
 148   myTransformFilter->Update();
 149   vtkUnstructuredGrid* aGrid = vtkUnstructuredGrid::SafeDownCast(myTransformFilter->GetOutput());
 150   if ( !aGrid )
 151     return;
 152
 153   myIsCellsLabeled = theIsCellsLabeled && aGrid->GetNumberOfPoints();
 154   if ( myIsCellsLabeled )
 155   {
 156     myCellsNumDataSet->ShallowCopy(aGrid);
 157     vtkUnstructuredGrid *aDataSet = myCellsNumDataSet;
 158     int aNbElem = aDataSet->GetNumberOfCells();
 159     vtkIntArray *anArray = vtkIntArray::New();
 160     anArray->SetNumberOfValues(aNbElem);
 161     myExtractUnstructuredGrid->BuildOut2InMap();
 162     for(int anId = 0; anId < aNbElem; anId++)
 163     {
 164       vtkIdType id = anId;
 165       if(IsImplicitFunctionUsed())
 166         id = myExtractGeometry->GetElemObjId(id);
 167       id = myExtractUnstructuredGrid->GetInputId(id);
 168       id = (id >=0) ? id : anId;
 169       int aSMDSId = myVisualObj->GetElemObjId(id);
 170       anArray->SetValue(anId,aSMDSId);
 171     }
 172     aDataSet->GetCellData()->SetScalars(anArray);
 173     myCellCenters->SetInputData(aDataSet);
 174     myCellsLabels->SetVisibility(GetVisibility());
 175   }else{
 176     myCellsLabels->SetVisibility(false);
 177   }
 178 }
 179
 180 void SMESH_CellLabelActor::SetVisibility(int theMode)
 181 {
 182   SMESH_DeviceActor::SetVisibility(theMode);
 183   myCellsLabels->VisibilityOff();
 184   if(myIsCellsLabeled && theMode)
 185     myCellsLabels->VisibilityOn();
 186 }
 187
 188 void SMESH_CellLabelActor::AddToRender(vtkRenderer* theRenderer)
 189 {
 190   SMESH_DeviceActor::AddToRender(theRenderer);
 191   myClsSelectVisiblePoints->SetRenderer(theRenderer);
 192   theRenderer->AddActor2D(myCellsLabels);
 193 }
 194
 195 void SMESH_CellLabelActor::RemoveFromRender(vtkRenderer* theRenderer)
 196 {
 197   theRenderer->RemoveActor(myCellsLabels);
 198   SMESH_DeviceActor::RemoveFromRender(theRenderer);
 199 }
 200
 201 void SMESH_CellLabelActor::UpdateLabels()
 202 {
 203   if(myIsCellsLabeled)
 204     SetCellsLabeled(myIsCellsLabeled);
 205 }
 206
 207
 208 void SMESH_CellLabelActor::ProcessEvents(vtkObject* vtkNotUsed(theObject),
 209                                          unsigned long theEvent,
 210                                          void* theClientData,
 211                                          void* vtkNotUsed(theCallData))
 212 {
 213   SMESH_CellLabelActor* self = reinterpret_cast<SMESH_CellLabelActor*>(theClientData);
 214   if(self)
 215     self->UpdateLabels();
 216 }