PointLocatorRadius
VTKExamples/Cxx/PolyData/PointLocatorRadius
Code¶
PointLocatorRadius.cxx
#include <vtkSmartPointer.h> #include <vtkIdList.h> #include <vtkPolyDataMapper.h> #include <vtkObjectFactory.h> #include <vtkPointSource.h> #include <vtkPolyData.h> #include <vtkPointLocator.h> int main(int, char *[]) { vtkSmartPointer<vtkPointSource> pointSource = vtkSmartPointer<vtkPointSource>::New(); pointSource->SetNumberOfPoints(400); pointSource->Update(); // Create the tree vtkSmartPointer<vtkPointLocator> pointLocator = vtkSmartPointer<vtkPointLocator>::New(); pointLocator->SetDataSet(pointSource->GetOutput()); pointLocator->AutomaticOn(); pointLocator->SetNumberOfPointsPerBucket(2); pointLocator->BuildLocator(); double radius = .1; double center[3] = {0.0, 0.0, 0.0}; vtkSmartPointer<vtkIdList> result = vtkSmartPointer<vtkIdList>::New(); pointLocator->FindPointsWithinRadius (radius, center, result); for(vtkIdType i = 0; i < result->GetNumberOfIds(); i++) { unsigned int id = result->GetId(i); std::cout << "id of point " << i << " : " << id << std::endl; } return EXIT_SUCCESS; }
CMakeLists.txt¶
cmake_minimum_required(VERSION 2.8) PROJECT(PointLocatorRadius) find_package(VTK REQUIRED) include(${VTK_USE_FILE}) add_executable(PointLocatorRadius MACOSX_BUNDLE PointLocatorRadius.cxx) target_link_libraries(PointLocatorRadius ${VTK_LIBRARIES})
Download and Build PointLocatorRadius¶
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 Some tarballs may be missing or out-of-date.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 PointLocatorRadius and its CMakeLists.txt file. Once the tarball PointLocatorRadius.tar has been downloaded and extracted,
cd PointLocatorRadius/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:
./PointLocatorRadius
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.