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¶
Danger
The generation of tar files has not been ported to the new VTKExamples. Some tarballs may be missing or out-of-date.
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.