VTK/Examples/Cxx/Filtering/SelectionSource
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< VTK | Examples | Cxx
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The output currently has 50 points when it should only have 10.
SelectionSource.cxx
#include <vtkSmartPointer.h>
#include <vtkPointSource.h>
#include <vtkExtractSelection.h>
//#include <vtkSelection.h>
#include <vtkSelectionNode.h>
#include <vtkSelectionSource.h>
#include <vtkPolyData.h>
#include <vtkUnstructuredGrid.h>
#include <vtkIdTypeArray.h>
int main(int argc, char *argv[])
{
vtkSmartPointer<vtkPointSource> pointSource =
vtkSmartPointer<vtkPointSource>::New();
pointSource->SetNumberOfPoints(50);
pointSource->Update();
cout << "There are " << pointSource->GetOutput()->GetNumberOfPoints() << " input points." << endl;
vtkSmartPointer<vtkSelectionSource> selectionSource =
vtkSmartPointer<vtkSelectionSource>::New();
selectionSource->SetContentType(vtkSelectionNode::INDICES);
selectionSource->SetFieldType(vtkSelectionNode::POINT);
for (int i = 10; i <= 20; i++)
{
selectionSource->AddID(-1, i);
}
selectionSource->Update();
vtkSmartPointer<vtkExtractSelection> extractSelection =
vtkSmartPointer<vtkExtractSelection>::New();
extractSelection->SetInput(0, pointSource->GetOutput());
extractSelection->SetInput(1, selectionSource->GetOutput());
extractSelection->Update();
vtkDataSet* ds = vtkDataSet::SafeDownCast (extractSelection->GetOutput());
cout << "There are " << ds->GetNumberOfPoints() << " output points." << endl;
return EXIT_SUCCESS;
}
CMakeLists.txt
cmake_minimum_required(VERSION 2.6)
PROJECT(SelectionSource)
FIND_PACKAGE(VTK REQUIRED)
INCLUDE(${VTK_USE_FILE})
ADD_EXECUTABLE(SelectionSource SelectionSource.cxx)
TARGET_LINK_LIBRARIES(SelectionSource vtkHybrid)