1 // Copyright (C) 2007-2010 CEA/DEN, EDF R&D, OPEN CASCADE
3 // This library is free software; you can redistribute it and/or
4 // modify it under the terms of the GNU Lesser General Public
5 // License as published by the Free Software Foundation; either
6 // version 2.1 of the License.
8 // This library is distributed in the hope that it will be useful,
9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 // Lesser General Public License for more details.
13 // You should have received a copy of the GNU Lesser General Public
14 // License along with this library; if not, write to the Free Software
15 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
20 // VISU OBJECT : interactive object for VISU entities implementation
21 // File: VISU_StreamLinesPL.cxx
22 // Author: Alexey PETROV
25 #include "VISU_MaskPointsFilter.hxx"
27 #include <vtkObjectFactory.h>
28 #include <vtkPointSet.h>
29 #include <vtkPointData.h>
30 #include <vtkCellData.h>
31 #include <vtkPoints.h>
32 #include <vtkIdList.h>
34 vtkStandardNewMacro(VISU_MaskPointsFilter);
36 VISU_MaskPointsFilter::VISU_MaskPointsFilter(){
37 PercentsOfUsedPoints = 1.0;
40 VISU_MaskPointsFilter::~VISU_MaskPointsFilter(){}
42 void VISU_MaskPointsFilter::Execute(){
43 vtkPointSet *anInput = this->GetInput(), *anOutput = this->GetOutput();
44 anOutput->GetPointData()->CopyAllOff();
45 anOutput->GetCellData()->CopyAllOff();
46 anOutput->CopyStructure(anInput);
48 vtkPoints* aPoints = vtkPoints::New();
49 vtkIdList *anIdList = vtkIdList::New();
50 vtkIdType iEnd = anInput->GetNumberOfPoints();
51 for(vtkIdType i = 0; i < iEnd; i++){
52 anInput->GetPointCells(i,anIdList);
53 if(anIdList->GetNumberOfIds() > 0)
54 aPoints->InsertNextPoint(anInput->GetPoint(i));
56 vtkPoints* aNewPoints = vtkPoints::New();
57 iEnd = aPoints->GetNumberOfPoints();
58 if (PercentsOfUsedPoints > 0){
59 vtkIdType anOffset = vtkIdType(1.0/PercentsOfUsedPoints);
60 if(anOffset < 1) anOffset = 1;
61 for(vtkIdType i = 0; i < iEnd; i += anOffset)
62 aNewPoints->InsertNextPoint(aPoints->GetPoint(i));
64 anOutput->SetPoints(aNewPoints);