src/PIPELINE/VISU_DeformedShapePL.cxx

   1 //  VISU OBJECT : interactive object for VISU entities implementation
   2 //
   3 //  Copyright (C) 2003  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.opencascade.org/SALOME/ or email : webmaster.salome@opencascade.org
  21 //
  22 //
  23 // File:    VISU_PipeLine.cxx
  24 // Author:  Alexey PETROV
  25 // Module : VISU
  26
  27
  28 #include "VISU_DeformedShapePL.hxx"
  29 #include "VISU_PipeLineUtils.hxx"
  30 #include "VTKViewer_Transform.h"
  31
  32 #include <vtkWarpVector.h>
  33
  34 vtkStandardNewMacro(VISU_DeformedShapePL);
  35
  36 VISU_DeformedShapePL
  37 ::VISU_DeformedShapePL()
  38 {
  39   myWarpVector = vtkWarpVector::New();
  40   myCellDataToPointData = vtkCellDataToPointData::New();
  41 }
  42
  43 VISU_DeformedShapePL
  44 ::~VISU_DeformedShapePL()
  45 {
  46   myWarpVector->UnRegisterAllOutputs();
  47   myWarpVector->Delete();
  48
  49   myCellDataToPointData->UnRegisterAllOutputs();
  50   myCellDataToPointData->Delete();
  51 }
  52
  53 void
  54 VISU_DeformedShapePL
  55 ::ShallowCopy(VISU_PipeLine *thePipeLine)
  56 {
  57   if(VISU_DeformedShapePL *aPipeLine = dynamic_cast<VISU_DeformedShapePL*>(thePipeLine)){
  58     SetScale(aPipeLine->GetScale());
  59   }
  60   VISU_ScalarMapPL::ShallowCopy(thePipeLine);
  61 }
  62
  63 vtkFloatingPointType
  64 VISU_DeformedShapePL
  65 ::GetScaleFactor(vtkDataSet* theDataSet)
  66 {
  67   if(!theDataSet) return 0.0;
  68   theDataSet->Update();
  69   int aNbCells = theDataSet->GetNumberOfCells();
  70   int aNbPoints = theDataSet->GetNumberOfPoints();
  71   int aNbElem = aNbCells? aNbCells: aNbPoints;
  72   vtkFloatingPointType* aBounds = theDataSet->GetBounds();
  73   vtkFloatingPointType aVolume = 1, aVol, idim = 0;
  74   for(int i = 0; i < 6; i += 2){
  75     aVol = fabs(aBounds[i+1] - aBounds[i]);
  76     if(aVol > 0) {
  77       idim++;
  78       aVolume *= aVol;
  79     }
  80   }
  81   aVolume /= aNbElem;
  82   return pow(aVolume,vtkFloatingPointType(1.0/idim));
  83 }
  84
  85
  86 void
  87 VISU_DeformedShapePL
  88 ::SetScale(vtkFloatingPointType theScale)
  89 {
  90   myWarpVector->SetScaleFactor(theScale);
  91   myScaleFactor = theScale;
  92   Modified();
  93 }
  94
  95 vtkFloatingPointType
  96 VISU_DeformedShapePL
  97 ::GetScale()
  98 {
  99   return myScaleFactor;
 100 }
 101
 102 void
 103 VISU_DeformedShapePL
 104 ::Init()
 105 {
 106   VISU_ScalarMapPL::Init();
 107   vtkFloatingPointType aScalarRange[2];
 108   GetSourceRange(aScalarRange);
 109
 110   vtkDataSet* aDataSet = GetInput2();
 111   vtkFloatingPointType aScaleFactor = VISU_DeformedShapePL::GetScaleFactor( aDataSet );
 112
 113   static double EPS = 1.0 / VTK_LARGE_FLOAT;
 114   if(fabs(aScalarRange[1]) > EPS)
 115     SetScale(aScaleFactor / aScalarRange[1]);
 116   else
 117     SetScale(0.0);
 118 }
 119
 120 VISU_ScalarMapPL::THook*
 121 VISU_DeformedShapePL
 122 ::DoHook()
 123 {
 124   VISU::CellDataToPoint(myWarpVector,myCellDataToPointData,GetInput2(),myFieldTransform);
 125   return myWarpVector->GetOutput();
 126 }
 127
 128 void
 129 VISU_DeformedShapePL
 130 ::Update()
 131 {
 132   VISU_ScalarMapPL::Update();
 133 }
 134
 135 void
 136 VISU_DeformedShapePL
 137 ::SetMapScale(vtkFloatingPointType theMapScale)
 138 {
 139   VISU_ScalarMapPL::SetMapScale(theMapScale);
 140
 141   myWarpVector->SetScaleFactor(myScaleFactor*theMapScale);
 142   Modified();
 143 }