PointCellIds
VTKExamples/Cxx/PolyData/PointCellIds
Code
PointCellIds.cxx
#include <vtkSmartPointer.h>
#include <vtkSphereSource.h>
#include <vtkIdFilter.h>
#include <vtkIdTypeArray.h>
#include <vtkPointData.h>
#include <vtkCellData.h>
int main(int, char *[])
{
vtkSmartPointer<vtkSphereSource> sphereSource =
vtkSmartPointer<vtkSphereSource>::New();
sphereSource->Update();
std::cout << "There are " << sphereSource->GetOutput()->GetNumberOfPoints() << " points." << std::endl;
std::cout << "There are " << sphereSource->GetOutput()->GetNumberOfCells() << " cells." << std::endl;
vtkSmartPointer<vtkIdFilter> idFilter =
vtkSmartPointer<vtkIdFilter>::New();
idFilter->SetInputConnection(sphereSource->GetOutputPort());
idFilter->SetIdsArrayName("ids");
idFilter->Update();
std::cout << "point arrays: " << std::endl;
for(vtkIdType i = 0; i < idFilter->GetOutput()->GetPointData()->GetNumberOfArrays(); i++)
{
std::cout << idFilter->GetOutput()->GetPointData()->GetArrayName(i) << std::endl;
}
std::cout << "cell arrays: " << std::endl;
for(vtkIdType i = 0; i < idFilter->GetOutput()->GetCellData()->GetNumberOfArrays(); i++)
{
std::cout << idFilter->GetOutput()->GetCellData()->GetArrayName(i) << std::endl;
}
vtkIdTypeArray* pointIds = vtkIdTypeArray::SafeDownCast(idFilter->GetOutput()->GetPointData()->GetArray("ids"));
std::cout << "There are " << pointIds->GetNumberOfTuples() << " point ids" << std::endl;
vtkIdTypeArray* cellIds = vtkIdTypeArray::SafeDownCast(idFilter->GetOutput()->GetCellData()->GetArray("ids"));
std::cout << "There are " << cellIds->GetNumberOfTuples() << " point ids" << std::endl;
return EXIT_SUCCESS;
}
CMakeLists.txt
cmake_minimum_required(VERSION 2.8)
PROJECT(PointCellIds)
find_package(VTK REQUIRED)
include(${VTK_USE_FILE})
add_executable(PointCellIds MACOSX_BUNDLE PointCellIds.cxx)
target_link_libraries(PointCellIds ${VTK_LIBRARIES})
Download and Build PointCellIds
Click here to download PointCellIds and its CMakeLists.txt file. Once the tarball PointCellIds.tar has been downloaded and extracted,
cd PointCellIds/build
If VTK is installed:
cmake ..
If VTK is not installed but compiled on your system, you will need to specify the path to your VTK build:
cmake -DVTK_DIR:PATH=/home/me/vtk_build ..
Build the project:
make
and run it:
./PointCellIds
WINDOWS USERS PLEASE NOTE: Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.